Merge pull request #232 from hkalexling/rc/0.24.0

v0.24.0

.all-contributorsrc

@@ -0,0 +1,120 @@
+{
+  "projectName": "Mango",
+  "projectOwner": "hkalexling",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "commitConvention": "none",
+  "contributors": [
+    {
+      "login": "hkalexling",
+      "name": "Alex Ling",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/7845831?v=4",
+      "profile": "https://github.com/hkalexling/",
+      "contributions": [
+        "code",
+        "doc",
+        "infra"
+      ]
+    },
+    {
+      "login": "jaredlt",
+      "name": "jaredlt",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/8590311?v=4",
+      "profile": "https://github.com/jaredlt",
+      "contributions": [
+        "code",
+        "ideas",
+        "design"
+      ]
+    },
+    {
+      "login": "shincurry",
+      "name": "ココロ",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/4946624?v=4",
+      "profile": "https://windisco.com/",
+      "contributions": [
+        "infra"
+      ]
+    },
+    {
+      "login": "noirscape",
+      "name": "Valentijn",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/13433513?v=4",
+      "profile": "https://catgirlsin.space/",
+      "contributions": [
+        "infra"
+      ]
+    },
+    {
+      "login": "flying-sausages",
+      "name": "flying-sausages",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/23618693?v=4",
+      "profile": "https://github.com/flying-sausages",
+      "contributions": [
+        "doc",
+        "ideas"
+      ]
+    },
+    {
+      "login": "XavierSchiller",
+      "name": "Xavier",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/22575255?v=4",
+      "profile": "https://github.com/XavierSchiller",
+      "contributions": [
+        "infra"
+      ]
+    },
+    {
+      "login": "WROIATE",
+      "name": "Jarao",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/44677306?v=4",
+      "profile": "https://github.com/WROIATE",
+      "contributions": [
+        "infra"
+      ]
+    },
+    {
+      "login": "Leeingnyo",
+      "name": "이인용",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/6760150?v=4",
+      "profile": "https://github.com/Leeingnyo",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "h45h74x",
+      "name": "Simon",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/27204033?v=4",
+      "profile": "http://h45h74x.eu.org",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "davidkna",
+      "name": "David Knaack",
+      "avatar_url": "https://avatars.githubusercontent.com/u/835177?v=4",
+      "profile": "https://github.com/davidkna",
+      "contributions": [
+        "infra"
+      ]
+    },
+    {
+      "login": "lincolnthedev",
+      "name": "i use arch btw",
+      "avatar_url": "https://avatars.githubusercontent.com/u/41193328?v=4",
+      "profile": "https://lncn.dev",
+      "contributions": [
+        "infra"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "skipCi": true
+}

.ameba.yml

@@ -7,3 +7,8 @@ Lint/UnusedArgument:
     - src/routes/*
 Metrics/CyclomaticComplexity:
   Enabled: false
+Layout/LineLength:
+  Enabled: true
+  MaxLength: 80
+  Excluded:
+    - src/routes/api.cr

.dockerignore

@@ -0,0 +1,9 @@
+node_modules
+lib
+Dockerfile
+Dockerfile.arm32v7
+Dockerfile.arm64v8
+README.md
+.all-contributorsrc
+env.example
+.github/

.github/autoapproval.yml

@@ -0,0 +1,6 @@
+from_owner:
+  - hkalexling
+required_labels:
+  - autoapprove
+apply_labels:
+  - autoapproved

.github/workflows/build.yml

@@ -2,7 +2,7 @@ name: Build
 
 on:
   push:
-    branches: [ master, dev ]
+    branches: [ master, dev, hotfix/* ]
   pull_request:
     branches: [ master, dev ]
 
@@ -12,20 +12,29 @@ jobs:
 
     runs-on: ubuntu-latest
     container:
-      image: crystallang/crystal:0.34.0-alpine
+      image: crystallang/crystal:1.0.0-alpine
 
     steps:
     - uses: actions/checkout@v2
     - name: Install dependencies
-      run: apk add --no-cache yarn yaml sqlite-static libarchive-dev libarchive-static acl-static expat-static zstd-static lz4-static bzip2-static
+      run: apk add --no-cache yarn yaml-static sqlite-static libarchive-dev libarchive-static acl-static expat-static zstd-static lz4-static bzip2-static libjpeg-turbo-dev libpng-dev tiff-dev
     - name: Build
-      run: make static
+      run: make static || make static
     - name: Linter
       run: make check
     - name: Run tests
       run: make test
-    - name: Upload artifact
+    - name: Upload binary
       uses: actions/upload-artifact@v2
       with:
         name: mango
         path: mango
+    - name: build arm32v7 object file
+      run: make arm32v7 || make arm32v7
+    - name: build arm64v8 object file
+      run: make arm64v8 || make arm64v8
+    - name: Upload object files
+      uses: actions/upload-artifact@v2
+      with:
+        name: object files
+        path: ./*.o

.github/workflows/dockerhub.yml

@@ -9,7 +9,7 @@ jobs:
     - uses: actions/checkout@master
     - name: Get release version
       id: get_version
-      run: echo ::set-env name=RELEASE_VERSION::$(echo ${GITHUB_REF:10})
+      run: echo "RELEASE_VERSION=$(echo ${GITHUB_REF:10})" >> $GITHUB_ENV
     - name: Publish to Dockerhub
       uses: elgohr/Publish-Docker-Github-Action@master
       with:

.gitignore

@@ -12,3 +12,5 @@ mango
 public/css/uikit.css
 public/img/*.svg
 public/js/*.min.js
+public/css/*.css
+public/webfonts

Dockerfile

@@ -1,16 +1,15 @@
-FROM crystallang/crystal:0.34.0-alpine AS builder
+FROM crystallang/crystal:1.0.0-alpine AS builder
 
 WORKDIR /Mango
 
 COPY . .
-COPY package*.json .
-RUN apk add --no-cache yarn yaml sqlite-static libarchive-dev libarchive-static acl-static expat-static zstd-static lz4-static bzip2-static \
-    && make static
+RUN apk add --no-cache yarn yaml-static sqlite-static libarchive-dev libarchive-static acl-static expat-static zstd-static lz4-static bzip2-static libjpeg-turbo-dev libpng-dev tiff-dev
+RUN make static || make static
 
 FROM library/alpine
 
 WORKDIR /
 
-COPY --from=builder /Mango/mango .
+COPY --from=builder /Mango/mango /usr/local/bin/mango
 
-CMD ["./mango"]
+CMD ["/usr/local/bin/mango"]

Dockerfile.arm32v7

@@ -0,0 +1,15 @@
+FROM arm32v7/ubuntu:18.04
+
+RUN apt-get update && apt-get install -y wget git make llvm-8 llvm-8-dev g++ libsqlite3-dev libyaml-dev libgc-dev libssl-dev libcrypto++-dev libevent-dev libgmp-dev zlib1g-dev libpcre++-dev pkg-config libarchive-dev libxml2-dev libacl1-dev nettle-dev liblzo2-dev liblzma-dev libbz2-dev libjpeg-turbo8-dev libpng-dev libtiff-dev
+
+RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 1.0.0 && make deps && cd ..
+RUN git clone https://github.com/kostya/myhtml && cd myhtml/src/ext && git checkout v1.5.8 && make && cd ..
+RUN git clone https://github.com/jessedoyle/duktape.cr && cd duktape.cr/ext && git checkout v1.0.0 && make && cd ..
+RUN git clone https://github.com/hkalexling/image_size.cr && cd image_size.cr && git checkout v0.5.0 && make && cd ..
+
+COPY mango-arm32v7.o .
+
+RUN cc 'mango-arm32v7.o' -o '/usr/local/bin/mango' -rdynamic -lxml2 -L/image_size.cr/ext/libwebp -lwebp -L/image_size.cr/ext/stbi -lstbi /myhtml/src/ext/modest-c/lib/libmodest_static.a -L/duktape.cr/src/.build/lib -L/duktape.cr/src/.build/include -lduktape -lm `pkg-config libarchive --libs` -lz `command -v pkg-config > /dev/null && pkg-config --libs --silence-errors libssl || printf %s '-lssl -lcrypto'` `command -v pkg-config > /dev/null && pkg-config --libs --silence-errors libcrypto || printf %s '-lcrypto'` -lgmp -lsqlite3 -lyaml -lpcre -lm /usr/lib/arm-linux-gnueabihf/libgc.so -lpthread /crystal/src/ext/libcrystal.a -levent -lrt -ldl -L/usr/bin/../lib/crystal/lib -L/usr/bin/../lib/crystal/lib
+
+CMD ["/usr/local/bin/mango"]
+

Dockerfile.arm64v8

@@ -0,0 +1,14 @@
+FROM arm64v8/ubuntu:18.04
+
+RUN apt-get update && apt-get install -y wget git make llvm-8 llvm-8-dev g++ libsqlite3-dev libyaml-dev libgc-dev libssl-dev libcrypto++-dev libevent-dev libgmp-dev zlib1g-dev libpcre++-dev pkg-config libarchive-dev libxml2-dev libacl1-dev nettle-dev liblzo2-dev liblzma-dev libbz2-dev libjpeg-turbo8-dev libpng-dev libtiff-dev
+
+RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 1.0.0 && make deps && cd ..
+RUN git clone https://github.com/kostya/myhtml && cd myhtml/src/ext && git checkout v1.5.8 && make && cd ..
+RUN git clone https://github.com/jessedoyle/duktape.cr && cd duktape.cr/ext && git checkout v1.0.0 && make && cd ..
+RUN git clone https://github.com/hkalexling/image_size.cr && cd image_size.cr && git checkout v0.5.0 && make && cd ..
+
+COPY mango-arm64v8.o .
+
+RUN cc 'mango-arm64v8.o' -o '/usr/local/bin/mango' -rdynamic -lxml2 -L/image_size.cr/ext/libwebp -lwebp -L/image_size.cr/ext/stbi -lstbi /myhtml/src/ext/modest-c/lib/libmodest_static.a -L/duktape.cr/src/.build/lib -L/duktape.cr/src/.build/include -lduktape -lm `pkg-config libarchive --libs` -lz `command -v pkg-config > /dev/null && pkg-config --libs --silence-errors libssl || printf %s '-lssl -lcrypto'` `command -v pkg-config > /dev/null && pkg-config --libs --silence-errors libcrypto || printf %s '-lcrypto'` -lgmp -lsqlite3 -lyaml -lpcre -lm /usr/lib/aarch64-linux-gnu/libgc.so -lpthread /crystal/src/ext/libcrystal.a -levent -lrt -ldl -L/usr/bin/../lib/crystal/lib -L/usr/bin/../lib/crystal/lib
+
+CMD ["/usr/local/bin/mango"]

Makefile

@@ -12,10 +12,10 @@ setup: libs
 	yarn gulp dev
 
 build: libs
-	crystal build src/mango.cr --release --progress
+	crystal build src/mango.cr --release --progress --error-trace
 
 static: uglify | libs
-	crystal build src/mango.cr --release --progress --static
+	crystal build src/mango.cr --release --progress --static --error-trace
 
 libs:
 	shards install --production
@@ -29,7 +29,12 @@ test:
 check:
 	crystal tool format --check
 	./bin/ameba
-	./dev/linewidth.sh
+
+arm32v7:
+	crystal build src/mango.cr --release --progress --error-trace --cross-compile --target='arm-linux-gnueabihf' -o mango-arm32v7
+
+arm64v8:
+	crystal build src/mango.cr --release --progress --error-trace --cross-compile --target='aarch64-linux-gnu' -o mango-arm64v8
 
 install:
 	cp mango $(INSTALL_DIR)/mango

README.md

@@ -2,7 +2,7 @@
 
 # Mango
 
-[![Patreon](https://img.shields.io/badge/support-patreon-brightgreen?link=https://www.patreon.com/hkalexling)](https://www.patreon.com/hkalexling) ![Build](https://github.com/hkalexling/Mango/workflows/Build/badge.svg) [![Gitter](https://badges.gitter.im/mango-cr/mango.svg)](https://gitter.im/mango-cr/mango?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![Patreon](https://img.shields.io/badge/support-patreon-brightgreen?link=https://www.patreon.com/hkalexling)](https://www.patreon.com/hkalexling) ![Build](https://github.com/hkalexling/Mango/workflows/Build/badge.svg) [![Gitter](https://badges.gitter.im/mango-cr/mango.svg)](https://gitter.im/mango-cr/mango?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) [![Discord](https://img.shields.io/discord/855633663425118228?label=discord)](http://discord.com/invite/ezKtacCp9Q)
 
 Mango is a self-hosted manga server and reader. Its features include
 
@@ -12,7 +12,7 @@ Mango is a self-hosted manga server and reader. Its features include
 - Supported formats: `.cbz`, `.zip`, `.cbr` and `.rar`
 - Supports nested folders in library
 - Automatically stores reading progress
-- Built-in [MangaDex](https://mangadex.org/) downloader
+- Thumbnail generation
 - Supports [plugins](https://github.com/hkalexling/mango-plugins) to download from thrid-party sites
 - The web reader is responsive and works well on mobile, so there is no need for a mobile app
 - All the static files are embedded in the binary, so the deployment process is easy and painless
@@ -51,7 +51,7 @@ The official docker images are available on [Dockerhub](https://hub.docker.com/r
 ### CLI
 
 ```
-  Mango - Manga Server and Web Reader. Version 0.10.0
+  Mango - Manga Server and Web Reader. Version 0.24.0
 
   Usage:
 
@@ -74,16 +74,28 @@ The default config file location is `~/.config/mango/config.yml`. It might be di
 
 ```yaml
 ---
+host: 0.0.0.0
 port: 9000
 base_url: /
+session_secret: mango-session-secret
 library_path: ~/mango/library
 db_path: ~/mango/mango.db
 scan_interval_minutes: 5
+thumbnail_generation_interval_hours: 24
 log_level: info
 upload_path: ~/mango/uploads
+plugin_path: ~/mango/plugins
+download_timeout_seconds: 30
+library_cache_path: ~/mango/library.yml.gz
+cache_enabled: false
+cache_size_mbs: 50
+cache_log_enabled: true
+disable_login: false
+default_username: ""
+auth_proxy_header_name: ""
 mangadex:
   base_url: https://mangadex.org
-  api_url: https://mangadex.org/api
+  api_url: https://api.mangadex.org/v2
   download_wait_seconds: 5
   download_retries: 4
   download_queue_db_path: ~/mango/queue.db
@@ -91,8 +103,10 @@ mangadex:
   manga_rename_rule: '{title}'
 ```
 
-- `scan_interval_minutes` can be any non-negative integer. Setting it to `0` disables the periodic scan
+- `scan_interval_minutes`, `thumbnail_generation_interval_hours` and `db_optimization_interval_hours` can be any non-negative integer. Setting them to `0` disables the periodic tasks
 - `log_level` can be `debug`, `info`, `warn`, `error`, `fatal` or `off`. Setting it to `off` disables the logging
+- You can disable authentication by setting `disable_login` to true. Note that `default_username` must be set to an existing username for this to work.
+- By setting `cache_enabled` to `true`, you can enable an experimental feature where Mango caches library metadata to improve page load time. You can further fine-tune the feature with `cache_size_mbs` and `cache_log_enabled`.
 
 ### Library Structure
 
@@ -139,8 +153,36 @@ Mobile UI:
 
 ![mobile screenshot](./.github/screenshots/mobile.png)
 
+## Sponsors
+
+<a href="https://casinoshunter.com/online-casinos/"><img src="https://i.imgur.com/EJb3wBo.png" width="150" height="auto"></a>
+<a href="https://www.browserstack.com/open-source"><img src="https://i.imgur.com/hGJUJXD.png" width="150" height="auto"></a>
+
 ## Contributors
 
-Please check the [development guideline](https://github.com/hkalexling/Mango/wiki/Development) if you are interest in code contributions.
+Please check the [development guideline](https://github.com/hkalexling/Mango/wiki/Development) if you are interested in code contributions.
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="https://github.com/hkalexling/"><img src="https://avatars1.githubusercontent.com/u/7845831?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Alex Ling</b></sub></a><br /><a href="https://github.com/hkalexling/Mango/commits?author=hkalexling" title="Code">💻</a> <a href="https://github.com/hkalexling/Mango/commits?author=hkalexling" title="Documentation">📖</a> <a href="#infra-hkalexling" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+    <td align="center"><a href="https://github.com/jaredlt"><img src="https://avatars1.githubusercontent.com/u/8590311?v=4?s=100" width="100px;" alt=""/><br /><sub><b>jaredlt</b></sub></a><br /><a href="https://github.com/hkalexling/Mango/commits?author=jaredlt" title="Code">💻</a> <a href="#ideas-jaredlt" title="Ideas, Planning, & Feedback">🤔</a> <a href="#design-jaredlt" title="Design">🎨</a></td>
+    <td align="center"><a href="https://windisco.com/"><img src="https://avatars1.githubusercontent.com/u/4946624?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ココロ</b></sub></a><br /><a href="#infra-shincurry" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+    <td align="center"><a href="https://catgirlsin.space/"><img src="https://avatars0.githubusercontent.com/u/13433513?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Valentijn</b></sub></a><br /><a href="#infra-noirscape" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+    <td align="center"><a href="https://github.com/flying-sausages"><img src="https://avatars1.githubusercontent.com/u/23618693?v=4?s=100" width="100px;" alt=""/><br /><sub><b>flying-sausages</b></sub></a><br /><a href="https://github.com/hkalexling/Mango/commits?author=flying-sausages" title="Documentation">📖</a> <a href="#ideas-flying-sausages" title="Ideas, Planning, & Feedback">🤔</a></td>
+    <td align="center"><a href="https://github.com/XavierSchiller"><img src="https://avatars1.githubusercontent.com/u/22575255?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Xavier</b></sub></a><br /><a href="#infra-XavierSchiller" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+    <td align="center"><a href="https://github.com/WROIATE"><img src="https://avatars3.githubusercontent.com/u/44677306?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jarao</b></sub></a><br /><a href="#infra-WROIATE" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/Leeingnyo"><img src="https://avatars0.githubusercontent.com/u/6760150?v=4?s=100" width="100px;" alt=""/><br /><sub><b>이인용</b></sub></a><br /><a href="https://github.com/hkalexling/Mango/commits?author=Leeingnyo" title="Code">💻</a></td>
+    <td align="center"><a href="http://h45h74x.eu.org"><img src="https://avatars1.githubusercontent.com/u/27204033?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Simon</b></sub></a><br /><a href="https://github.com/hkalexling/Mango/commits?author=h45h74x" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/davidkna"><img src="https://avatars.githubusercontent.com/u/835177?v=4?s=100" width="100px;" alt=""/><br /><sub><b>David Knaack</b></sub></a><br /><a href="#infra-davidkna" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+    <td align="center"><a href="https://lncn.dev"><img src="https://avatars.githubusercontent.com/u/41193328?v=4?s=100" width="100px;" alt=""/><br /><sub><b>i use arch btw</b></sub></a><br /><a href="#infra-lincolnthedev" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
+  </tr>
+</table>
 
-[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/0)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/0)[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/1)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/1)[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/2)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/2)[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/3)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/3)[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/4)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/4)[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/5)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/5)[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/6)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/6)[![](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/images/7)](https://sourcerer.io/fame/hkalexling/hkalexling/Mango/links/7)
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->

dev/linewidth.sh

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-[ ! -z "$(grep '.\{80\}' --exclude-dir=lib --include="*.cr" -nr --color=always . | tee /dev/tty)" ] \
-	&& echo "The above lines exceed the 80 characters limit" \
-	|| exit 0

gulpfile.js

@@ -1,15 +1,42 @@
 const gulp = require('gulp');
-const minify = require("gulp-babel-minify");
+const babel = require('gulp-babel');
+const minify = require('gulp-babel-minify');
 const minifyCss = require('gulp-minify-css');
 const less = require('gulp-less');
 
-gulp.task('copy-uikit-js', () => {
-	return gulp.src('node_modules/uikit/dist/js/*.min.js')
-		.pipe(gulp.dest('public/js'));
+gulp.task('copy-img', () => {
+	return gulp.src('node_modules/uikit/src/images/backgrounds/*.svg')
+		.pipe(gulp.dest('public/img'));
 });
 
-gulp.task('minify-js', () => {
-	return gulp.src('public/js/*.js')
+gulp.task('copy-font', () => {
+	return gulp.src('node_modules/@fortawesome/fontawesome-free/webfonts/fa-solid-900.woff**')
+		.pipe(gulp.dest('public/webfonts'));
+});
+
+// Copy files from node_modules
+gulp.task('node-modules-copy', gulp.parallel('copy-img', 'copy-font'));
+
+// Compile less
+gulp.task('less', () => {
+	return gulp.src([
+			'public/css/mango.less',
+			'public/css/tags.less'
+		])
+		.pipe(less())
+		.pipe(gulp.dest('public/css'));
+});
+
+// Transpile and minify JS files and output to dist
+gulp.task('babel', () => {
+	return gulp.src(['public/js/*.js', '!public/js/*.min.js'])
+		.pipe(babel({
+			presets: [
+				['@babel/preset-env', {
+					targets: '>0.25%, not dead, ios>=9'
+				}]
+			],
+		}))
 		.pipe(minify({
 			removeConsole: true,
 			builtIns: false
@@ -17,40 +44,31 @@ gulp.task('minify-js', () => {
 		.pipe(gulp.dest('dist/js'));
 });
 
-gulp.task('less', () => {
-	return gulp.src('public/css/*.less')
-		.pipe(less())
-		.pipe(gulp.dest('public/css'));
-});
-
+// Minify CSS and output to dist
 gulp.task('minify-css', () => {
 	return gulp.src('public/css/*.css')
 		.pipe(minifyCss())
 		.pipe(gulp.dest('dist/css'));
 });
 
-gulp.task('copy-uikit-icons', () => {
-	return gulp.src('node_modules/uikit/src/images/backgrounds/*.svg')
-		.pipe(gulp.dest('public/img'));
-});
-
-gulp.task('img', () => {
-	return gulp.src('public/img/*')
-		.pipe(gulp.dest('dist/img'));
-});
-
+// Copy static files (includeing images) to dist
 gulp.task('copy-files', () => {
-	return gulp.src('public/*.*')
+	return gulp.src([
+			'public/*.*',
+			'public/img/*',
+			'public/webfonts/*',
+			'public/js/*.min.js'
+		], {
+			base: 'public'
+		})
 		.pipe(gulp.dest('dist'));
 });
 
-gulp.task('default', gulp.parallel(
-	gulp.series('copy-uikit-js', 'minify-js'),
-	gulp.series('less', 'minify-css'),
-	gulp.series('copy-uikit-icons', 'img'),
-	'copy-files'
-));
+// Set up the public folder for development
+gulp.task('dev', gulp.parallel('node-modules-copy', 'less'));
 
-gulp.task('dev', gulp.parallel(
-	'copy-uikit-js', 'less', 'copy-uikit-icons'
-));
+// Set up the dist folder for deployment
+gulp.task('deploy', gulp.parallel('babel', 'minify-css', 'copy-files'));
+
+// Default task
+gulp.task('default', gulp.series('dev', 'deploy'));

migration/foreign_keys.6.cr

@@ -0,0 +1,85 @@
+class ForeignKeys < MG::Base
+  def up : String
+    <<-SQL
+    -- add foreign key to tags
+    ALTER TABLE tags RENAME TO tmp;
+
+    CREATE TABLE tags (
+      id TEXT NOT NULL,
+      tag TEXT NOT NULL,
+      UNIQUE (id, tag),
+      FOREIGN KEY (id) REFERENCES titles (id)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+    );
+
+    INSERT INTO tags
+    SELECT * FROM tmp;
+
+    DROP TABLE tmp;
+
+    CREATE INDEX tags_id_idx ON tags (id);
+    CREATE INDEX tags_tag_idx ON tags (tag);
+
+    -- add foreign key to thumbnails
+    ALTER TABLE thumbnails RENAME TO tmp;
+
+    CREATE TABLE thumbnails (
+      id TEXT NOT NULL,
+      data BLOB NOT NULL,
+      filename TEXT NOT NULL,
+      mime TEXT NOT NULL,
+      size INTEGER NOT NULL,
+      FOREIGN KEY (id) REFERENCES ids (id)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+    );
+
+    INSERT INTO thumbnails
+    SELECT * FROM tmp;
+
+    DROP TABLE tmp;
+
+    CREATE UNIQUE INDEX tn_index ON thumbnails (id);
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    -- remove foreign key from thumbnails
+    ALTER TABLE thumbnails RENAME TO tmp;
+
+    CREATE TABLE thumbnails (
+      id TEXT NOT NULL,
+      data BLOB NOT NULL,
+      filename TEXT NOT NULL,
+      mime TEXT NOT NULL,
+      size INTEGER NOT NULL
+    );
+
+    INSERT INTO thumbnails
+    SELECT * FROM tmp;
+
+    DROP TABLE tmp;
+
+    CREATE UNIQUE INDEX tn_index ON thumbnails (id);
+
+    -- remove foreign key from tags
+    ALTER TABLE tags RENAME TO tmp;
+
+    CREATE TABLE tags (
+      id TEXT NOT NULL,
+      tag TEXT NOT NULL,
+      UNIQUE (id, tag)
+    );
+
+    INSERT INTO tags
+    SELECT * FROM tmp;
+
+    DROP TABLE tmp;
+
+    CREATE INDEX tags_id_idx ON tags (id);
+    CREATE INDEX tags_tag_idx ON tags (tag);
+    SQL
+  end
+end

migration/ids.2.cr

@@ -0,0 +1,19 @@
+class CreateIds < MG::Base
+  def up : String
+    <<-SQL
+    CREATE TABLE IF NOT EXISTS ids (
+      path TEXT NOT NULL,
+      id TEXT NOT NULL,
+      is_title INTEGER NOT NULL
+    );
+    CREATE UNIQUE INDEX IF NOT EXISTS path_idx ON ids (path);
+    CREATE UNIQUE INDEX IF NOT EXISTS id_idx ON ids (id);
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    DROP TABLE ids;
+    SQL
+  end
+end

migration/ids_signature.7.cr

@@ -0,0 +1,50 @@
+class IDSignature < MG::Base
+  def up : String
+    <<-SQL
+    ALTER TABLE ids ADD COLUMN signature TEXT;
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    -- remove signature column from ids
+    ALTER TABLE ids RENAME TO tmp;
+
+    CREATE TABLE ids (
+      path TEXT NOT NULL,
+      id TEXT NOT NULL
+    );
+
+    INSERT INTO ids
+    SELECT path, id
+    FROM tmp;
+
+    DROP TABLE tmp;
+
+    -- recreate the indices
+    CREATE UNIQUE INDEX path_idx ON ids (path);
+    CREATE UNIQUE INDEX id_idx ON ids (id);
+
+    -- recreate the foreign key constraint on thumbnails
+    ALTER TABLE thumbnails RENAME TO tmp;
+
+    CREATE TABLE thumbnails (
+      id TEXT NOT NULL,
+      data BLOB NOT NULL,
+      filename TEXT NOT NULL,
+      mime TEXT NOT NULL,
+      size INTEGER NOT NULL,
+      FOREIGN KEY (id) REFERENCES ids (id)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+    );
+
+    INSERT INTO thumbnails
+    SELECT * FROM tmp;
+
+    DROP TABLE tmp;
+
+    CREATE UNIQUE INDEX tn_index ON thumbnails (id);
+    SQL
+  end
+end

migration/md_account.11.cr

@@ -0,0 +1,20 @@
+class CreateMangaDexAccount < MG::Base
+  def up : String
+    <<-SQL
+    CREATE TABLE md_account (
+      username TEXT NOT NULL PRIMARY KEY,
+      token TEXT NOT NULL,
+      expire INTEGER NOT NULL,
+      FOREIGN KEY (username) REFERENCES users (username)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+    );
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    DROP TABLE md_account;
+    SQL
+  end
+end

migration/relative_path.8.cr

@@ -0,0 +1,33 @@
+class RelativePath < MG::Base
+  def up : String
+    base = Config.current.library_path
+    # Escape single quotes in case the path contains them, and remove the
+    #   trailing slash (this is a mistake, fixed in DB version 10)
+    base = base.gsub("'", "''").rstrip "/"
+
+    <<-SQL
+    -- update the path column in ids to relative paths
+    UPDATE ids
+    SET path = REPLACE(path, '#{base}', '');
+
+    -- update the path column in titles to relative paths
+    UPDATE titles
+    SET path = REPLACE(path, '#{base}', '');
+    SQL
+  end
+
+  def down : String
+    base = Config.current.library_path
+    base = base.gsub("'", "''").rstrip "/"
+
+    <<-SQL
+    -- update the path column in ids to absolute paths
+    UPDATE ids
+    SET path = '#{base}' || path;
+
+    -- update the path column in titles to absolute paths
+    UPDATE titles
+    SET path = '#{base}' || path;
+    SQL
+  end
+end

migration/relative_path_fix.10.cr

@@ -0,0 +1,31 @@
+# In DB version 8, we replaced the absolute paths in DB with relative paths,
+#   but we mistakenly left the starting slashes. This migration removes them.
+class RelativePathFix < MG::Base
+  def up : String
+    <<-SQL
+    -- remove leading slashes from the paths in ids
+    UPDATE ids
+    SET path = SUBSTR(path, 2, LENGTH(path) - 1)
+    WHERE path LIKE '/%';
+
+    -- remove leading slashes from the paths in titles
+    UPDATE titles
+    SET path = SUBSTR(path, 2, LENGTH(path) - 1)
+    WHERE path LIKE '/%';
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    -- add leading slashes to paths in ids
+    UPDATE ids
+    SET path = '/' || path
+    WHERE path NOT LIKE '/%';
+
+    -- add leading slashes to paths in titles
+    UPDATE titles
+    SET path = '/' || path
+    WHERE path NOT LIKE '/%';
+    SQL
+  end
+end

migration/tags.4.cr

@@ -0,0 +1,19 @@
+class CreateTags < MG::Base
+  def up : String
+    <<-SQL
+    CREATE TABLE IF NOT EXISTS tags (
+      id TEXT NOT NULL,
+      tag TEXT NOT NULL,
+      UNIQUE (id, tag)
+    );
+    CREATE INDEX IF NOT EXISTS tags_id_idx ON tags (id);
+    CREATE INDEX IF NOT EXISTS tags_tag_idx ON tags (tag);
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    DROP TABLE tags;
+    SQL
+  end
+end

migration/thumbnails.3.cr

@@ -0,0 +1,20 @@
+class CreateThumbnails < MG::Base
+  def up : String
+    <<-SQL
+    CREATE TABLE IF NOT EXISTS thumbnails (
+      id TEXT NOT NULL,
+      data BLOB NOT NULL,
+      filename TEXT NOT NULL,
+      mime TEXT NOT NULL,
+      size INTEGER NOT NULL
+    );
+    CREATE UNIQUE INDEX IF NOT EXISTS tn_index ON thumbnails (id);
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    DROP TABLE thumbnails;
+    SQL
+  end
+end

migration/titles.5.cr

@@ -0,0 +1,56 @@
+class CreateTitles < MG::Base
+  def up : String
+    <<-SQL
+    -- create titles
+    CREATE TABLE titles (
+      id TEXT NOT NULL,
+      path TEXT NOT NULL,
+      signature TEXT
+    );
+    CREATE UNIQUE INDEX titles_id_idx on titles (id);
+    CREATE UNIQUE INDEX titles_path_idx on titles (path);
+
+    -- migrate data from ids to titles
+    INSERT INTO titles
+    SELECT id, path, null
+    FROM ids
+    WHERE is_title = 1;
+
+    DELETE FROM ids
+    WHERE is_title = 1;
+
+    -- remove the is_title column from ids
+    ALTER TABLE ids RENAME TO tmp;
+
+    CREATE TABLE ids (
+      path TEXT NOT NULL,
+      id TEXT NOT NULL
+    );
+
+    INSERT INTO ids
+    SELECT path, id
+    FROM tmp;
+
+    DROP TABLE tmp;
+
+    -- recreate the indices
+    CREATE UNIQUE INDEX path_idx ON ids (path);
+    CREATE UNIQUE INDEX id_idx ON ids (id);
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    -- insert the is_title column
+    ALTER TABLE ids ADD COLUMN is_title INTEGER NOT NULL DEFAULT 0;
+
+    -- migrate data from titles to ids
+    INSERT INTO ids
+    SELECT path, id, 1
+    FROM titles;
+
+    -- remove titles
+    DROP TABLE titles;
+    SQL
+  end
+end

migration/unavailable.9.cr

@@ -0,0 +1,94 @@
+class UnavailableIDs < MG::Base
+  def up : String
+    <<-SQL
+    -- add unavailable column to ids
+    ALTER TABLE ids ADD COLUMN unavailable INTEGER NOT NULL DEFAULT 0;
+
+    -- add unavailable column to titles
+    ALTER TABLE titles ADD COLUMN unavailable INTEGER NOT NULL DEFAULT 0;
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    -- remove unavailable column from ids
+    ALTER TABLE ids RENAME TO tmp;
+
+    CREATE TABLE ids (
+      path TEXT NOT NULL,
+      id TEXT NOT NULL,
+      signature TEXT
+    );
+
+    INSERT INTO ids
+    SELECT path, id, signature
+    FROM tmp;
+
+    DROP TABLE tmp;
+
+    -- recreate the indices
+    CREATE UNIQUE INDEX path_idx ON ids (path);
+    CREATE UNIQUE INDEX id_idx ON ids (id);
+
+    -- recreate the foreign key constraint on thumbnails
+    ALTER TABLE thumbnails RENAME TO tmp;
+
+    CREATE TABLE thumbnails (
+      id TEXT NOT NULL,
+      data BLOB NOT NULL,
+      filename TEXT NOT NULL,
+      mime TEXT NOT NULL,
+      size INTEGER NOT NULL,
+      FOREIGN KEY (id) REFERENCES ids (id)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+    );
+
+    INSERT INTO thumbnails
+    SELECT * FROM tmp;
+
+    DROP TABLE tmp;
+
+    CREATE UNIQUE INDEX tn_index ON thumbnails (id);
+
+    -- remove unavailable column from titles
+    ALTER TABLE titles RENAME TO tmp;
+
+    CREATE TABLE titles (
+      id TEXT NOT NULL,
+      path TEXT NOT NULL,
+      signature TEXT
+    );
+
+    INSERT INTO titles
+    SELECT path, id, signature
+    FROM tmp;
+
+    DROP TABLE tmp;
+
+    -- recreate the indices
+    CREATE UNIQUE INDEX titles_id_idx on titles (id);
+    CREATE UNIQUE INDEX titles_path_idx on titles (path);
+
+    -- recreate the foreign key constraint on tags
+    ALTER TABLE tags RENAME TO tmp;
+
+    CREATE TABLE tags (
+      id TEXT NOT NULL,
+      tag TEXT NOT NULL,
+      UNIQUE (id, tag),
+      FOREIGN KEY (id) REFERENCES titles (id)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+    );
+
+    INSERT INTO tags
+    SELECT * FROM tmp;
+
+    DROP TABLE tmp;
+
+    CREATE INDEX tags_id_idx ON tags (id);
+    CREATE INDEX tags_tag_idx ON tags (tag);
+    SQL
+  end
+end

migration/users.1.cr

@@ -0,0 +1,20 @@
+class CreateUsers < MG::Base
+  def up : String
+    <<-SQL
+    CREATE TABLE IF NOT EXISTS users (
+      username TEXT NOT NULL,
+      password TEXT NOT NULL,
+      token TEXT,
+      admin INTEGER NOT NULL
+    );
+    CREATE UNIQUE INDEX IF NOT EXISTS username_idx ON users (username);
+    CREATE UNIQUE INDEX IF NOT EXISTS token_idx ON users (token);
+    SQL
+  end
+
+  def down : String
+    <<-SQL
+    DROP TABLE users;
+    SQL
+  end
+end

package.json

@@ -1,21 +1,25 @@
 {
-  "name": "mango",
-  "version": "1.0.0",
-  "main": "index.js",
-  "repository": "https://github.com/hkalexling/Mango.git",
-  "author": "Alex Ling <hkalexling@gmail.com>",
-  "license": "MIT",
-  "devDependencies": {
-    "gulp": "^4.0.2",
-    "gulp-babel-minify": "^0.5.1",
-    "gulp-less": "^4.0.1",
-    "gulp-minify-css": "^1.2.4",
-    "less": "^3.11.3"
-  },
-  "scripts": {
-    "uglify": "gulp"
-  },
-  "dependencies": {
-    "uikit": "^3.5.4"
-  }
+	"name": "mango",
+	"version": "1.0.0",
+	"main": "index.js",
+	"repository": "https://github.com/hkalexling/Mango.git",
+	"author": "Alex Ling <hkalexling@gmail.com>",
+	"license": "MIT",
+	"devDependencies": {
+		"@babel/preset-env": "^7.11.5",
+		"all-contributors-cli": "^6.19.0",
+		"gulp": "^4.0.2",
+		"gulp-babel": "^8.0.0",
+		"gulp-babel-minify": "^0.5.1",
+		"gulp-less": "^4.0.1",
+		"gulp-minify-css": "^1.2.4",
+		"less": "^3.11.3"
+	},
+	"scripts": {
+		"uglify": "gulp"
+	},
+	"dependencies": {
+		"@fortawesome/fontawesome-free": "^5.14.0",
+		"uikit": "^3.5.4"
+	}
 }

public/css/mango.css

@@ -1,137 +0,0 @@
-.uk-alert-close {
-    color: black !important;
-}
-
-.uk-card-body {
-    padding: 20px;
-}
-
-.uk-card-media-top {
-    width: 100%;
-    height: 250px;
-}
-
-@media (min-width: 600px) {
-    .uk-card-media-top {
-        height: 300px;
-    }
-}
-
-.uk-card-media-top>img {
-    height: 100%;
-    width: 100%;
-    object-fit: cover;
-}
-
-.uk-card-title {
-    max-height: 3em;
-}
-
-.acard:hover {
-    cursor: pointer;
-}
-
-.uk-list li:not(.nopointer) {
-    cursor: pointer;
-}
-
-#scan-status {
-    cursor: auto;
-}
-
-.reader-bg {
-    background-color: black;
-}
-
-.break-word {
-    word-wrap: break-word;
-}
-
-.uk-logo>img {
-    height: 90px;
-    width: 90px;
-}
-
-.uk-search {
-    width: 100%;
-}
-
-#selectable .ui-selecting {
-    background: #EEE6B9;
-}
-
-#selectable .ui-selected {
-    background: #F4E487;
-}
-
-.uk-light #selectable .ui-selecting {
-    background: #5E5731;
-}
-
-.uk-light #selectable .ui-selected {
-    background: #9D9252;
-}
-
-td>.uk-dropdown {
-    white-space: pre-line;
-}
-
-#edit-modal .uk-grid>div {
-    height: 300px;
-}
-
-#edit-modal #cover {
-    height: 100%;
-    width: 100%;
-    object-fit: cover;
-}
-
-#edit-modal #cover-upload {
-    height: 100%;
-    box-sizing: border-box;
-}
-
-#edit-modal .uk-modal-body .uk-inline {
-    width: 100%;
-}
-
-.item .uk-card-title {
-    font-size: 1rem;
-}
-
-.grayscale {
-    filter: grayscale(100%);
-}
-
-.uk-light .uk-navbar-dropdown,
-.uk-light .uk-modal-header,
-.uk-light .uk-modal-body,
-.uk-light .uk-modal-footer {
-    background: #222;
-}
-
-.uk-light .uk-dropdown {
-    background: #333;
-}
-
-.uk-light .uk-navbar-dropdown,
-.uk-light .uk-dropdown {
-    color: #ccc;
-}
-
-.uk-light .uk-nav-header,
-.uk-light .uk-description-list>dt {
-    color: #555;
-}
-
-[x-cloak] {
-    display: none;
-}
-
-#select-bar-controls a {
-    transform: scale(1.5, 1.5);
-}
-
-#select-bar-controls a:hover {
-    color: orange;
-}

public/css/mango.less

@@ -0,0 +1,139 @@
+// UIKit
+@import "./uikit.less";
+
+// FontAwesome
+@import "../../node_modules/@fortawesome/fontawesome-free/less/fontawesome.less";
+@import "../../node_modules/@fortawesome/fontawesome-free/less/solid.less";
+
+@font-face {
+  src: url('@{fa-font-path}/fa-solid-900.woff2');
+  src: url('@{fa-font-path}/fa-solid-900.woff2') format('woff2'),
+    url('@{fa-font-path}/fa-solid-900.woff') format('woff');
+}
+
+// Item cards
+.item .uk-card {
+    cursor: pointer;
+	.uk-card-media-top {
+		width: 100%;
+		height: 250px;
+		@media (min-width: 600px) {
+			height: 300px;
+		}
+
+		img {
+			height: 100%;
+			width: 100%;
+			object-fit: cover;
+
+			&.grayscale {
+				filter: grayscale(100%);
+			}
+		}
+	}
+	.uk-card-body {
+		padding: 20px;
+		.uk-card-title {
+			font-size: 1rem;
+		}
+		.uk-card-title:not(.free-height) {
+			max-height: 3em;
+		}
+	}
+}
+
+// jQuery selectable
+#selectable {
+	.ui-selecting {
+		background: #EEE6B9;
+	}
+	.ui-selected {
+		background: #F4E487;
+	}
+	.uk-light & {
+		.ui-selecting {
+			background: #5E5731;
+		}
+		.ui-selected {
+			background: #9D9252;
+		}
+	}
+}
+
+// Edit modal
+#edit-modal {
+	.uk-grid > div {
+		height: 300px;
+	}
+	#cover {
+		height: 100%;
+		width: 100%;
+		object-fit: cover;
+	}
+	#cover-upload {
+		height: 100%;
+		box-sizing: border-box;
+	}
+	.uk-modal-body .uk-inline {
+		width: 100%;
+	}
+}
+
+// Dark theme
+.uk-light {
+	.uk-modal-header,
+	.uk-modal-body,
+	.uk-modal-footer {
+		background: #222;
+	}
+	.uk-navbar-dropdown,
+	.uk-dropdown {
+		color: #ccc;
+		background: #333;
+	}
+	.uk-nav-header,
+	.uk-description-list > dt {
+		color: #555;
+	}
+}
+
+// Alpine magic
+[x-cloak] {
+    display: none;
+}
+
+// Batch select bar on title page
+#select-bar-controls {
+	a {
+		transform: scale(1.5, 1.5);
+
+		&:hover {
+			color: orange;
+		}
+	}
+}
+
+// Totop button
+#totop-wrapper {
+    position: absolute;
+    top: 100vh;
+    right: 2em;
+    bottom: 0;
+
+	a {
+		position: fixed;
+		position: sticky;
+		top: calc(100vh - 5em);
+	}
+}
+
+// Misc
+.uk-alert-close {
+    color: black !important;
+}
+.break-word {
+    word-wrap: break-word;
+}
+.uk-search {
+    width: 100%;
+}

public/css/tags.less

@@ -0,0 +1,58 @@
+@light-gray: #e5e5e5;
+@gray: #666666;
+@black: #141414;
+@blue: rgb(30, 135, 240);
+@white1: rgba(255, 255, 255, .1);
+@white2: rgba(255, 255, 255, .2);
+@white7: rgba(255, 255, 255, .7);
+
+.select2-container--default {
+	.select2-selection--multiple {
+		border: 1px solid @light-gray;
+		.select2-selection__choice,
+		.select2-selection__choice__remove,
+		.select2-selection__choice__remove:hover
+		{
+			background-color: @blue;
+			color: white;
+			border: none;
+			border-radius: 2px;
+		}
+	}
+	.select2-dropdown {
+		.select2-results__option--highlighted.select2-results__option--selectable {
+			background-color: @blue;
+		}
+		.select2-results__option--selected:not(.select2-results__option--highlighted) {
+			background-color: @light-gray
+		}
+	}
+}
+
+.uk-light {
+	.select2-container--default {
+		.select2-selection {
+			background-color: @white1;
+		}
+		.select2-selection--multiple {
+			border: 1px solid @white2;
+			.select2-selection__choice,
+			.select2-selection__choice__remove,
+			.select2-selection__choice__remove:hover
+			{
+				background-color: white;
+				color: @gray;
+				border: none;
+			}
+			.select2-search__field {
+				color: @white7;
+			}
+		}
+	}
+	.select2-dropdown {
+		background-color: @black;
+		.select2-results__option--selected:not(.select2-results__option--highlighted) {
+			background-color: @white2;
+		}
+	}
+}

public/css/uikit.less

@@ -43,3 +43,22 @@
 @internal-list-bullet-image:                     "../img/list-bullet.svg";
 @internal-accordion-open-image:                  "../img/accordion-open.svg";
 @internal-accordion-close-image:                 "../img/accordion-close.svg";
+
+.hook-card-default() {
+	.uk-light & {
+		background: @card-secondary-background;
+		color: @card-secondary-color;
+	}
+}
+
+.hook-card-default-title() {
+	.uk-light & {
+		color: @card-secondary-title-color;
+	}
+}
+
+.hook-card-default-hover() {
+	.uk-light & {
+		background-color: @card-secondary-hover-background;
+	}
+}

public/js/admin.js

@@ -1,40 +1,55 @@
-let scanning = false;
+const component = () => {
+	return {
+		progress: 1.0,
+		generating: false,
+		scanning: false,
+		scanTitles: 0,
+		scanMs: -1,
+		themeSetting: '',
 
-const scan = () => {
-	scanning = true;
-	$('#scan-status > div').removeAttr('hidden');
-	$('#scan-status > span').attr('hidden', '');
-	const color = $('#scan').css('color');
-	$('#scan').css('color', 'gray');
-	$.post(base_url + 'api/admin/scan', (data) => {
-		const ms = data.milliseconds;
-		const titles = data.titles;
-		$('#scan-status > span').text('Scanned ' + titles + ' titles in ' + ms + 'ms');
-		$('#scan-status > span').removeAttr('hidden');
-		$('#scan').css('color', color);
-		$('#scan-status > div').attr('hidden', '');
-		scanning = false;
-	});
-}
+		init() {
+			this.getProgress();
+			setInterval(() => {
+				this.getProgress();
+			}, 5000);
 
-String.prototype.capitalize = function() {
-	return this.charAt(0).toUpperCase() + this.slice(1);
-}
-
-$(() => {
-	$('li').click((e) => {
-		const url = $(e.currentTarget).attr('data-url');
-		if (url) {
-			$(location).attr('href', url);
-		}
-	});
-
-	const setting = loadThemeSetting();
-	$('#theme-select').val(setting.capitalize());
-
-	$('#theme-select').change((e) => {
-		const newSetting = $(e.currentTarget).val().toLowerCase();
-		saveThemeSetting(newSetting);
-		setTheme();
-	});
-});
+			const setting = loadThemeSetting();
+			this.themeSetting = setting.charAt(0).toUpperCase() + setting.slice(1);
+		},
+		themeChanged(event) {
+			const newSetting = $(event.currentTarget).val().toLowerCase();
+			saveThemeSetting(newSetting);
+			setTheme();
+		},
+		scan() {
+			if (this.scanning) return;
+			this.scanning = true;
+			this.scanMs = -1;
+			this.scanTitles = 0;
+			$.post(`${base_url}api/admin/scan`)
+				.then(data => {
+					this.scanMs = data.milliseconds;
+					this.scanTitles = data.titles;
+				})
+				.always(() => {
+					this.scanning = false;
+				});
+		},
+		generateThumbnails() {
+			if (this.generating) return;
+			this.generating = true;
+			this.progress = 0.0;
+			$.post(`${base_url}api/admin/generate_thumbnails`)
+				.then(() => {
+					this.getProgress()
+				});
+		},
+		getProgress() {
+			$.get(`${base_url}api/admin/thumbnail_progress`)
+				.then(data => {
+					this.progress = data.progress;
+					this.generating = data.progress > 0;
+				});
+		},
+	};
+};

public/js/common.js

@@ -0,0 +1,143 @@
+/**
+ * --- Alpine helper functions
+ */
+
+/**
+ * Set an alpine.js property
+ *
+ * @function setProp
+ * @param {string} key - Key of the data property
+ * @param {*} prop - The data property
+ * @param {string} selector - The jQuery selector to the root element
+ */
+const setProp = (key, prop, selector = '#root') => {
+	$(selector).get(0).__x.$data[key] = prop;
+};
+
+/**
+ * Get an alpine.js property
+ *
+ * @function getProp
+ * @param {string} key - Key of the data property
+ * @param {string} selector - The jQuery selector to the root element
+ * @return {*} The data property
+ */
+const getProp = (key, selector = '#root') => {
+	return $(selector).get(0).__x.$data[key];
+};
+
+/**
+ * --- Theme related functions
+ *  	Note: In the comments below we treat "theme" and "theme setting"
+ *  		differently. A theme can have only two values, either "dark" or
+ *  		"light", while a theme setting can have the third value "system".
+ */
+
+/**
+ * Check if the system setting prefers dark theme.
+ * 		from https://flaviocopes.com/javascript-detect-dark-mode/
+ *
+ * @function preferDarkMode
+ * @return {bool}
+ */
+const preferDarkMode = () => {
+	return window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
+};
+
+/**
+ * Check whether a given string represents a valid theme setting
+ *
+ * @function validThemeSetting
+ * @param {string} theme - The string representing the theme setting
+ * @return {bool}
+ */
+const validThemeSetting = (theme) => {
+	return ['dark', 'light', 'system'].indexOf(theme) >= 0;
+};
+
+/**
+ * Load theme setting from local storage, or use 'light'
+ *
+ * @function loadThemeSetting
+ * @return {string} A theme setting ('dark', 'light', or 'system')
+ */
+const loadThemeSetting = () => {
+	let str = localStorage.getItem('theme');
+	if (!str || !validThemeSetting(str)) str = 'system';
+	return str;
+};
+
+/**
+ * Load the current theme (not theme setting)
+ *
+ * @function loadTheme
+ * @return {string} The current theme to use ('dark' or 'light')
+ */
+const loadTheme = () => {
+	let setting = loadThemeSetting();
+	if (setting === 'system') {
+		setting = preferDarkMode() ? 'dark' : 'light';
+	}
+	return setting;
+};
+
+/**
+ * Save a theme setting
+ *
+ * @function saveThemeSetting
+ * @param {string} setting - A theme setting
+ */
+const saveThemeSetting = setting => {
+	if (!validThemeSetting(setting)) setting = 'system';
+	localStorage.setItem('theme', setting);
+};
+
+/**
+ * Toggle the current theme. When the current theme setting is 'system', it
+ *		will be changed to either 'light' or 'dark'
+ *
+ * @function toggleTheme
+ */
+const toggleTheme = () => {
+	const theme = loadTheme();
+	const newTheme = theme === 'dark' ? 'light' : 'dark';
+	saveThemeSetting(newTheme);
+	setTheme(newTheme);
+};
+
+/**
+ * Apply a theme, or load a theme and then apply it
+ *
+ * @function setTheme
+ * @param {string?} theme - (Optional) The theme to apply. When omitted, use
+ * 		`loadTheme` to get a theme and apply it.
+ */
+const setTheme = (theme) => {
+	if (!theme) theme = loadTheme();
+	if (theme === 'dark') {
+		$('html').css('background', 'rgb(20, 20, 20)');
+		$('body').addClass('uk-light');
+		$('.ui-widget-content').addClass('dark');
+	} else {
+		$('html').css('background', '');
+		$('body').removeClass('uk-light');
+		$('.ui-widget-content').removeClass('dark');
+	}
+};
+
+// do it before document is ready to prevent the initial flash of white on
+// 	most pages
+setTheme();
+$(() => {
+	// hack for the reader page
+	setTheme();
+
+	// on system dark mode setting change
+	if (window.matchMedia) {
+		window.matchMedia('(prefers-color-scheme: dark)')
+			.addEventListener('change', event => {
+				if (loadThemeSetting() === 'system')
+					setTheme(event.matches ? 'dark' : 'light');
+			});
+	}
+});

public/js/dots.js

@@ -1,17 +1,26 @@
-const truncate = () => {
-	$('.uk-card-title').each((i, e) => {
-		$(e).dotdotdot({
-			truncate: 'letter',
-			watch: true,
-			callback: (truncated) => {
-				if (truncated) {
-					$(e).attr('uk-tooltip', $(e).attr('data-title'));
-				} else {
-					$(e).removeAttr('uk-tooltip');
-				}
+/**
+ * Truncate a .uk-card-title element
+ *
+ * @function truncate
+ * @param {object} e - The title element to truncate
+ */
+const truncate = (e) => {
+	$(e).dotdotdot({
+		truncate: 'letter',
+		watch: true,
+		callback: (truncated) => {
+			if (truncated) {
+				$(e).attr('uk-tooltip', $(e).attr('data-title'));
+			} else {
+				$(e).removeAttr('uk-tooltip');
 			}
-		});
+		}
 	});
 };
 
-truncate();
+$('.uk-card-title').each((i, e) => {
+	// Truncate the title when it first enters the view
+	$(e).one('inview', () => {
+		truncate(e);
+	});
+});

public/js/download-manager.js

@@ -1,145 +1,116 @@
-$(() => {
-	$('input.uk-checkbox').each((i, e) => {
-		$(e).change(() => {
-			loadConfig();
-		});
-	});
-	loadConfig();
-	load();
+const component = () => {
+	return {
+		jobs: [],
+		paused: undefined,
+		loading: false,
+		toggling: false,
+		ws: undefined,
 
-	const intervalMS = 5000;
-	setTimeout(() => {
-		setInterval(() => {
-			if (globalConfig.autoRefresh !== true) return;
-			load();
-		}, intervalMS);
-	}, intervalMS);
-});
-var globalConfig = {};
-var loading = false;
-
-const loadConfig = () => {
-	globalConfig.autoRefresh = $('#auto-refresh').prop('checked');
-};
-const remove = (id) => {
-	var url = base_url + 'api/admin/mangadex/queue/delete';
-	if (id !== undefined)
-		url += '?' + $.param({
-			id: id
-		});
-	console.log(url);
-	$.ajax({
-			type: 'POST',
-			url: url,
-			dataType: 'json'
-		})
-		.done(data => {
-			if (!data.success && data.error) {
-				alert('danger', `Failed to remove job from download queue. Error: ${data.error}`);
-				return;
+		wsConnect(secure = true) {
+			const url = `${secure ? 'wss' : 'ws'}://${location.host}${base_url}api/admin/mangadex/queue`;
+			console.log(`Connecting to ${url}`);
+			this.ws = new WebSocket(url);
+			this.ws.onmessage = event => {
+				const data = JSON.parse(event.data);
+				this.jobs = data.jobs;
+				this.paused = data.paused;
+			};
+			this.ws.onclose = () => {
+				if (this.ws.failed)
+					return this.wsConnect(false);
+				alert('danger', 'Socket connection closed');
+			};
+			this.ws.onerror = () => {
+				if (secure)
+					return this.ws.failed = true;
+				alert('danger', 'Socket connection failed');
+			};
+		},
+		init() {
+			this.wsConnect();
+			this.load();
+		},
+		load() {
+			this.loading = true;
+			$.ajax({
+					type: 'GET',
+					url: base_url + 'api/admin/mangadex/queue',
+					dataType: 'json'
+				})
+				.done(data => {
+					if (!data.success && data.error) {
+						alert('danger', `Failed to fetch download queue. Error: ${data.error}`);
+						return;
+					}
+					this.jobs = data.jobs;
+					this.paused = data.paused;
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to fetch download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				})
+				.always(() => {
+					this.loading = false;
+				});
+		},
+		jobAction(action, event) {
+			let url = `${base_url}api/admin/mangadex/queue/${action}`;
+			if (event) {
+				const id = event.currentTarget.closest('tr').id.split('-')[1];
+				url = `${url}?${$.param({
+					id: id
+				})}`;
 			}
-			load();
-		})
-		.fail((jqXHR, status) => {
-			alert('danger', `Failed to remove job from download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
-		});
-};
-const refresh = (id) => {
-	var url = base_url + 'api/admin/mangadex/queue/retry';
-	if (id !== undefined)
-		url += '?' + $.param({
-			id: id
-		});
-	console.log(url);
-	$.ajax({
-			type: 'POST',
-			url: url,
-			dataType: 'json'
-		})
-		.done(data => {
-			if (!data.success && data.error) {
-				alert('danger', `Failed to restart download job. Error: ${data.error}`);
-				return;
-			}
-			load();
-		})
-		.fail((jqXHR, status) => {
-			alert('danger', `Failed to restart download job. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
-		});
-};
-const toggle = () => {
-	$('#pause-resume-btn').attr('disabled', '');
-	const paused = $('#pause-resume-btn').text() === 'Resume download';
-	const action = paused ? 'resume' : 'pause';
-	const url = `${base_url}api/admin/mangadex/queue/${action}`;
-	$.ajax({
-			type: 'POST',
-			url: url,
-			dataType: 'json'
-		})
-		.fail((jqXHR, status) => {
-			alert('danger', `Failed to ${action} download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
-		})
-		.always(() => {
-			load();
-			$('#pause-resume-btn').removeAttr('disabled');
-		});
-};
-const load = () => {
-	if (loading) return;
-	loading = true;
-	console.log('fetching');
-	$.ajax({
-			type: 'GET',
-			url: base_url + 'api/admin/mangadex/queue',
-			dataType: 'json'
-		})
-		.done(data => {
-			if (!data.success && data.error) {
-				alert('danger', `Failed to fetch download queue. Error: ${data.error}`);
-				return;
-			}
-			console.log(data);
-			const btnText = data.paused ? "Resume download" : "Pause download";
-			$('#pause-resume-btn').text(btnText);
-			$('#pause-resume-btn').removeAttr('hidden');
-			const rows = data.jobs.map(obj => {
-				var cls = 'label ';
-				if (obj.status === 'Pending')
+			console.log(url);
+			$.ajax({
+					type: 'POST',
+					url: url,
+					dataType: 'json'
+				})
+				.done(data => {
+					if (!data.success && data.error) {
+						alert('danger', `Failed to ${action} job from download queue. Error: ${data.error}`);
+						return;
+					}
+					this.load();
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to ${action} job from download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				});
+		},
+		toggle() {
+			this.toggling = true;
+			const action = this.paused ? 'resume' : 'pause';
+			const url = `${base_url}api/admin/mangadex/queue/${action}`;
+			$.ajax({
+					type: 'POST',
+					url: url,
+					dataType: 'json'
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to ${action} download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				})
+				.always(() => {
+					this.load();
+					this.toggling = false;
+				});
+		},
+		statusClass(status) {
+			let cls = 'label ';
+			switch (status) {
+				case 'Pending':
 					cls += 'label-pending';
-				if (obj.status === 'Completed')
+					break;
+				case 'Completed':
 					cls += 'label-success';
-				if (obj.status === 'Error')
+					break;
+				case 'Error':
 					cls += 'label-danger';
-				if (obj.status === 'MissingPages')
+					break;
+				case 'MissingPages':
 					cls += 'label-warning';
-
-				const info = obj.status_message.length > 0 ? '<span uk-icon="info"></span>' : '';
-				const statusSpan = `<span class="${cls}">${obj.status} ${info}</span>`;
-				const dropdown = obj.status_message.length > 0 ? `<div uk-dropdown>${obj.status_message}</div>` : '';
-				const retryBtn = obj.status_message.length > 0 ? `<a onclick="refresh('${obj.id}')" uk-icon="refresh"></a>` : '';
-				return `<tr id="chapter-${obj.id}">
-				<td>${obj.plugin_id ? obj.title : `<a href="${baseURL}/chapter/${obj.id}">${obj.title}</a>`}</td>
-				<td>${obj.plugin_id ? obj.manga_title : `<a href="${baseURL}/manga/${obj.manga_id}">${obj.manga_title}</a>`}</td>
-				<td>${obj.success_count}/${obj.pages}</td>
-				<td>${moment(obj.time).fromNow()}</td>
-				<td>${statusSpan} ${dropdown}</td>
-				<td>${obj.plugin_id || ""}</td>
-				<td>
-					<a onclick="remove('${obj.id}')" uk-icon="trash"></a>
-					${retryBtn}
-				</td>
-				</tr>`;
-			});
-
-			const tbody = `<tbody>${rows.join('')}</tbody>`;
-			$('tbody').remove();
-			$('table').append(tbody);
-		})
-		.fail((jqXHR, status) => {
-			alert('danger', `Failed to fetch download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
-		})
-		.always(() => {
-			loading = false;
-		});
+					break;
+			}
+			return cls;
+		}
+	};
 };

public/js/download.js

@@ -1,305 +0,0 @@
-$(() => {
-	$('#search-input').keypress(event => {
-		if (event.which === 13) {
-			search();
-		}
-	});
-	$('.filter-field').each((i, ele) => {
-		$(ele).change(() => {
-			buildTable();
-		});
-	});
-});
-const selectAll = () => {
-	$('tbody > tr').each((i, e) => {
-		$(e).addClass('ui-selected');
-	});
-};
-const unselect = () => {
-	$('tbody > tr').each((i, e) => {
-		$(e).removeClass('ui-selected');
-	});
-};
-const download = () => {
-	const selected = $('tbody > tr.ui-selected');
-	if (selected.length === 0) return;
-	UIkit.modal.confirm(`Download ${selected.length} selected chapters?`).then(() => {
-		$('#download-btn').attr('hidden', '');
-		$('#download-spinner').removeAttr('hidden');
-		const ids = selected.map((i, e) => {
-			return $(e).find('td').first().text();
-		}).get();
-		const chapters = globalChapters.filter(c => ids.indexOf(c.id) >= 0);
-		console.log(ids);
-		$.ajax({
-				type: 'POST',
-				url: base_url + 'api/admin/mangadex/download',
-				data: JSON.stringify({
-					chapters: chapters
-				}),
-				contentType: "application/json",
-				dataType: 'json'
-			})
-			.done(data => {
-				console.log(data);
-				if (data.error) {
-					alert('danger', `Failed to add chapters to the download queue. Error: ${data.error}`);
-					return;
-				}
-				const successCount = parseInt(data.success);
-				const failCount = parseInt(data.fail);
-				UIkit.modal.confirm(`${successCount} of ${successCount + failCount} chapters added to the download queue. Proceed to the download manager?`).then(() => {
-					window.location.href = base_url + 'admin/downloads';
-				});
-			})
-			.fail((jqXHR, status) => {
-				alert('danger', `Failed to add chapters to the download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
-			})
-			.always(() => {
-				$('#download-spinner').attr('hidden', '');
-				$('#download-btn').removeAttr('hidden');
-			});
-	});
-};
-const toggleSpinner = () => {
-	var attr = $('#spinner').attr('hidden');
-	if (attr) {
-		$('#spinner').removeAttr('hidden');
-		$('#search-btn').attr('hidden', '');
-	} else {
-		$('#search-btn').removeAttr('hidden');
-		$('#spinner').attr('hidden', '');
-	}
-	searching = !searching;
-};
-var searching = false;
-var globalChapters;
-const search = () => {
-	if (searching) {
-		return;
-	}
-	$('#manga-details').attr('hidden', '');
-	$('#filter-form').attr('hidden', '');
-	$('table').attr('hidden', '');
-	$('#selection-controls').attr('hidden', '');
-	$('#filter-notification').attr('hidden', '');
-	toggleSpinner();
-	const input = $('input').val();
-
-	if (input === "") {
-		toggleSpinner();
-		return;
-	}
-
-	var int_id = -1;
-
-	try {
-		const path = new URL(input).pathname;
-		const match = /\/title\/([0-9]+)/.exec(path);
-		int_id = parseInt(match[1]);
-	} catch (e) {
-		int_id = parseInt(input);
-	}
-
-	if (int_id <= 0 || isNaN(int_id)) {
-		alert('danger', 'Please make sure you are using a valid manga ID or manga URL from Mangadex.');
-		toggleSpinner();
-		return;
-	}
-
-	$.getJSON(`${base_url}api/admin/mangadex/manga/${int_id}`)
-		.done((data) => {
-			if (data.error) {
-				alert('danger', 'Failed to get manga info. Error: ' + data.error);
-				return;
-			}
-
-			const cover = baseURL + data.cover_url;
-			$('#cover').attr("src", cover);
-			$('#title').text("Title: " + data.title);
-			$('#artist').text("Artist: " + data.artist);
-			$('#author').text("Author: " + data.author);
-
-			$('#manga-details').removeAttr('hidden');
-
-			console.log(data.chapters);
-			globalChapters = data.chapters;
-
-			let langs = new Set();
-			let group_names = new Set();
-			data.chapters.forEach(chp => {
-				Object.entries(chp.groups).forEach(([k, v]) => {
-					group_names.add(k);
-				});
-				langs.add(chp.language);
-			});
-
-			const comp = (a, b) => {
-				var ai;
-				var bi;
-				try {
-					ai = parseFloat(a);
-				} catch (e) {}
-				try {
-					bi = parseFloat(b);
-				} catch (e) {}
-				if (typeof ai === 'undefined') return -1;
-				if (typeof bi === 'undefined') return 1;
-				if (ai < bi) return 1;
-				if (ai > bi) return -1;
-				return 0;
-			};
-
-			langs = [...langs].sort();
-			group_names = [...group_names].sort();
-
-			langs.unshift('All');
-			group_names.unshift('All');
-
-			$('select#lang-select').append(langs.map(e => `<option>${e}</option>`).join(''));
-			$('select#group-select').append(group_names.map(e => `<option>${e}</option>`).join(''));
-
-			$('#filter-form').removeAttr('hidden');
-
-			buildTable();
-		})
-		.fail((jqXHR, status) => {
-			alert('danger', `Failed to get manga info. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
-		})
-		.always(() => {
-			toggleSpinner();
-		});
-};
-const parseRange = str => {
-	const regex = /^[\t ]*(?:(?:(<|<=|>|>=)[\t ]*([0-9]+))|(?:([0-9]+))|(?:([0-9]+)[\t ]*-[\t ]*([0-9]+))|(?:[\t ]*))[\t ]*$/m;
-	const matches = str.match(regex);
-	var num;
-
-	if (!matches) {
-		alert('danger', `Failed to parse filter input ${str}`);
-		return [null, null];
-	} else if (typeof matches[1] !== 'undefined' && typeof matches[2] !== 'undefined') {
-		// e.g., <= 30
-		num = parseInt(matches[2]);
-		if (isNaN(num)) {
-			alert('danger', `Failed to parse filter input ${str}`);
-			return [null, null];
-		}
-		switch (matches[1]) {
-			case '<':
-				return [null, num - 1];
-			case '<=':
-				return [null, num];
-			case '>':
-				return [num + 1, null];
-			case '>=':
-				return [num, null];
-		}
-	} else if (typeof matches[3] !== 'undefined') {
-		// a single number
-		num = parseInt(matches[3]);
-		if (isNaN(num)) {
-			alert('danger', `Failed to parse filter input ${str}`);
-			return [null, null];
-		}
-		return [num, num];
-	} else if (typeof matches[4] !== 'undefined' && typeof matches[5] !== 'undefined') {
-		// e.g., 10 - 23
-		num = parseInt(matches[4]);
-		const n2 = parseInt(matches[5]);
-		if (isNaN(num) || isNaN(n2) || num > n2) {
-			alert('danger', `Failed to parse filter input ${str}`);
-			return [null, null];
-		}
-		return [num, n2];
-	} else {
-		// empty or space only
-		return [null, null];
-	}
-};
-const getFilters = () => {
-	const filters = {};
-	$('.uk-select').each((i, ele) => {
-		const id = $(ele).attr('id');
-		const by = id.split('-')[0];
-		const choice = $(ele).val();
-		filters[by] = choice;
-	});
-	filters.volume = parseRange($('#volume-range').val());
-	filters.chapter = parseRange($('#chapter-range').val());
-	return filters;
-};
-const buildTable = () => {
-	$('table').attr('hidden', '');
-	$('#selection-controls').attr('hidden', '');
-	$('#filter-notification').attr('hidden', '');
-	console.log('rebuilding table');
-	const filters = getFilters();
-	console.log('filters:', filters);
-	var chapters = globalChapters.slice();
-	Object.entries(filters).forEach(([k, v]) => {
-		if (v === 'All') return;
-		if (k === 'group') {
-			chapters = chapters.filter(c => {
-				unescaped_groups = Object.entries(c.groups).map(([g, id]) => unescapeHTML(g));
-				return unescaped_groups.indexOf(v) >= 0;
-			});
-			return;
-		}
-		if (k === 'lang') {
-			chapters = chapters.filter(c => c.language === v);
-			return;
-		}
-		const lb = parseFloat(v[0]);
-		const ub = parseFloat(v[1]);
-		if (isNaN(lb) && isNaN(ub)) return;
-		chapters = chapters.filter(c => {
-			const val = parseFloat(c[k]);
-			if (isNaN(val)) return false;
-			if (isNaN(lb))
-				return val <= ub;
-			else if (isNaN(ub))
-				return val >= lb;
-			else
-				return val >= lb && val <= ub;
-		});
-	});
-	console.log('filtered chapters:', chapters);
-	$('#count-text').text(`${chapters.length} chapters found`);
-
-	const chaptersLimit = 1000;
-	if (chapters.length > chaptersLimit) {
-		$('#filter-notification').text(`Mango can only list ${chaptersLimit} chapters, but we found ${chapters.length} chapters in this manga. Please use the filter options above to narrow down your search.`);
-		$('#filter-notification').removeAttr('hidden');
-		return;
-	}
-
-	const inner = chapters.map(chp => {
-		const group_str = Object.entries(chp.groups).map(([k, v]) => {
-			return `<a href="${baseURL }/group/${v}">${k}</a>`;
-		}).join(' | ');
-		return `<tr class="ui-widget-content">
-						<td><a href="${baseURL}/chapter/${chp.id}">${chp.id}</a></td>
-						<td>${chp.title}</td>
-						<td>${chp.language}</td>
-						<td>${group_str}</td>
-						<td>${chp.volume}</td>
-						<td>${chp.chapter}</td>
-						<td>${moment.unix(chp.time).fromNow()}</td>
-					</tr>`;
-	}).join('');
-	const tbody = `<tbody id="selectable">${inner}</tbody>`;
-	$('tbody').remove();
-	$('table').append(tbody);
-	$('table').removeAttr('hidden');
-	$("#selectable").selectable({
-		filter: 'tr'
-	});
-	$('#selection-controls').removeAttr('hidden');
-};
-
-const unescapeHTML = (str) => {
-	var elt = document.createElement("span");
-	elt.innerHTML = str;
-	return elt.innerText;
-};

public/js/missing-items.js

@@ -0,0 +1,60 @@
+const component = () => {
+	return {
+		empty: true,
+		titles: [],
+		entries: [],
+		loading: true,
+
+		load() {
+			this.loading = true;
+			this.request('GET', `${base_url}api/admin/titles/missing`, data => {
+				this.titles = data.titles;
+				this.request('GET', `${base_url}api/admin/entries/missing`, data => {
+					this.entries = data.entries;
+					this.loading = false;
+					this.empty = this.entries.length === 0 && this.titles.length === 0;
+				});
+			});
+		},
+		rm(event) {
+			const rawID = event.currentTarget.closest('tr').id;
+			const [type, id] = rawID.split('-');
+			const url = `${base_url}api/admin/${type === 'title' ? 'titles' : 'entries'}/missing/${id}`;
+			this.request('DELETE', url, () => {
+				this.load();
+			});
+		},
+		rmAll() {
+			UIkit.modal.confirm('Are you sure? All metadata associated with these items, including their tags and thumbnails, will be deleted from the database.', {
+				labels: {
+					ok: 'Yes, delete them',
+					cancel: 'Cancel'
+				}
+			}).then(() => {
+				this.request('DELETE', `${base_url}api/admin/titles/missing`, () => {
+					this.request('DELETE', `${base_url}api/admin/entries/missing`, () => {
+						this.load();
+					});
+				});
+			});
+		},
+		request(method, url, cb) {
+			console.log(url);
+			$.ajax({
+					type: method,
+					url: url,
+					contentType: 'application/json'
+				})
+				.done(data => {
+					if (data.error) {
+						alert('danger', `Failed to ${method} ${url}. Error: ${data.error}`);
+						return;
+					}
+					if (cb) cb(data);
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to ${method} ${url}. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				});
+		}
+	};
+};

public/js/plugin-download.js

@@ -33,14 +33,13 @@ const search = () => {
 	if (searching)
 		return;
 
-	const query = $('#search-input').val();
+	const query = $.param({
+		query: $('#search-input').val(),
+		plugin: pid
+	});
 	$.ajax({
-			type: 'POST',
-			url: base_url + 'api/admin/plugin/list',
-			data: JSON.stringify({
-				query: query,
-				plugin: pid
-			}),
+			type: 'GET',
+			url: `${base_url}api/admin/plugin/list?${query}`,
 			contentType: "application/json",
 			dataType: 'json'
 		})
@@ -127,9 +126,7 @@ const download = () => {
 				}
 				const successCount = parseInt(data.success);
 				const failCount = parseInt(data.fail);
-				UIkit.modal.confirm(`${successCount} of ${successCount + failCount} chapters added to the download queue. Proceed to the download manager?`).then(() => {
-					window.location.href = base_url + 'admin/downloads';
-				});
+				alert('success', `${successCount} of ${successCount + failCount} chapters added to the download queue. You can view and manage your download queue on the <a href="${base_url}admin/downloads">download manager page</a>.`);
 			})
 			.fail((jqXHR, status) => {
 				alert('danger', `Failed to add chapters to the download queue. Error: [${jqXHR.status}] ${jqXHR.statusText}`);

public/js/reader.js

@@ -1,84 +1,324 @@
-$(function() {
-	function bind() {
-		var controller = new ScrollMagic.Controller();
+const readerComponent = () => {
+	return {
+		loading: true,
+		mode: 'continuous', // Can be 'continuous', 'height' or 'width'
+		msg: 'Loading the web reader. Please wait...',
+		alertClass: 'uk-alert-primary',
+		items: [],
+		curItem: {},
+		enableFlipAnimation: true,
+		flipAnimation: null,
+		longPages: false,
+		lastSavedPage: page,
+		selectedIndex: 0, // 0: not selected; 1: the first page
+		margin: 30,
+		preloadLookahead: 3,
 
-		// replace history on scroll
-		$('img').each(function(idx) {
-			var scene = new ScrollMagic.Scene({
-					triggerElement: $(this).get(),
-					triggerHook: 'onEnter',
-					reverse: true
-				})
-				.addTo(controller)
-				.on('enter', function(event) {
-					current = $(event.target.triggerElement()).attr('id');
-					replaceHistory(current);
-				})
-				.on('leave', function(event) {
-					var prev = $(event.target.triggerElement()).prev();
-					current = $(prev).attr('id');
-					replaceHistory(current);
-				});
-		});
+		/**
+		 * Initialize the component by fetching the page dimensions
+		 */
+		init(nextTick) {
+			$.get(`${base_url}api/dimensions/${tid}/${eid}`)
+				.then(data => {
+					if (!data.success && data.error)
+						throw new Error(resp.error);
+					const dimensions = data.dimensions;
 
-		// poor man's infinite scroll
-		var scene = new ScrollMagic.Scene({
-				triggerElement: $('.next-url').get(),
-				triggerHook: 'onEnter',
-				offset: -500
-			})
-			.addTo(controller)
-			.on('enter', function() {
-				var nextURL = $('.next-url').attr('href');
-				$('.next-url').remove();
-				if (!nextURL) {
-					console.log('No .next-url found. Reached end of page');
-					var lastURL = $('img').last().attr('id');
-					// load the reader URL for the last page to update reading progrss to 100%
-					$.get(lastURL);
-					$('#next-btn').removeAttr('hidden');
-					return;
+					this.items = dimensions.map((d, i) => {
+						return {
+							id: i + 1,
+							url: `${base_url}api/page/${tid}/${eid}/${i+1}`,
+							width: d.width,
+							height: d.height,
+						};
+					});
+
+					const avgRatio = this.items.reduce((acc, cur) => {
+						return acc + cur.height / cur.width
+					}, 0) / this.items.length;
+
+					console.log(avgRatio);
+					this.longPages = avgRatio > 2;
+					this.loading = false;
+					this.mode = localStorage.getItem('mode') || 'continuous';
+
+					// Here we save a copy of this.mode, and use the copy as
+					// 	the model-select value. This is because `updateMode`
+					// 	might change this.mode and make it `height` or `width`,
+					// 	which are not available in mode-select
+					const mode = this.mode;
+					this.updateMode(this.mode, page, nextTick);
+					$('#mode-select').val(mode);
+
+					const savedMargin = localStorage.getItem('margin');
+					if (savedMargin) {
+						this.margin = savedMargin;
+					}
+
+					// Preload Images
+					this.preloadLookahead = +(localStorage.getItem('preloadLookahead') ?? 3);
+					const limit = Math.min(page + this.preloadLookahead, this.items.length + 1);
+					for (let idx = page + 1; idx <= limit; idx++) {
+						this.preloadImage(this.items[idx - 1].url);
+					}
+
+					const savedFlipAnimation = localStorage.getItem('enableFlipAnimation');
+					this.enableFlipAnimation = savedFlipAnimation === null || savedFlipAnimation === 'true';
+				})
+				.catch(e => {
+					const errMsg = `Failed to get the page dimensions. ${e}`;
+					console.error(e);
+					this.alertClass = 'uk-alert-danger';
+					this.msg = errMsg;
+				})
+		},
+		/**
+		 * Preload an image, which is expected to be cached
+		 */
+		preloadImage(url) {
+			(new Image()).src = url;
+		},
+		/**
+		 * Handles the `change` event for the page selector
+		 */
+		pageChanged() {
+			const p = parseInt($('#page-select').val());
+			this.toPage(p);
+		},
+		/**
+		 * Handles the `change` event for the mode selector
+		 *
+		 * @param {function} nextTick - Alpine $nextTick magic property
+		 */
+		modeChanged(nextTick) {
+			const mode = $('#mode-select').val();
+			const curIdx = parseInt($('#page-select').val());
+
+			this.updateMode(mode, curIdx, nextTick);
+		},
+		/**
+		 * Handles the window `resize` event
+		 */
+		resized() {
+			if (this.mode === 'continuous') return;
+
+			const wideScreen = $(window).width() > $(window).height();
+			this.mode = wideScreen ? 'height' : 'width';
+		},
+		/**
+		 * Handles the window `keydown` event
+		 *
+		 * @param {Event} event - The triggering event
+		 */
+		keyHandler(event) {
+			if (this.mode === 'continuous') return;
+
+			if (event.key === 'ArrowLeft' || event.key === 'k')
+				this.flipPage(false);
+			if (event.key === 'ArrowRight' || event.key === 'j')
+				this.flipPage(true);
+		},
+		/**
+		 * Flips to the next or the previous page
+		 *
+		 * @param {bool} isNext - Whether we are going to the next page 
+		 */
+		flipPage(isNext) {
+			const idx = parseInt(this.curItem.id);
+			const newIdx = idx + (isNext ? 1 : -1);
+
+			if (newIdx <= 0 || newIdx > this.items.length) return;
+
+			if (newIdx + this.preloadLookahead < this.items.length + 1) {
+				this.preloadImage(this.items[newIdx + this.preloadLookahead - 1].url);
+			}
+
+			this.toPage(newIdx);
+
+			if (this.enableFlipAnimation) {
+				if (isNext)
+					this.flipAnimation = 'right';
+				else
+					this.flipAnimation = 'left';
+			}
+
+			setTimeout(() => {
+				this.flipAnimation = null;
+			}, 500);
+
+			this.replaceHistory(newIdx);
+		},
+		/**
+		 * Jumps to a specific page
+		 *
+		 * @param {number} idx - One-based index of the page
+		 */
+		toPage(idx) {
+			if (this.mode === 'continuous') {
+				$(`#${idx}`).get(0).scrollIntoView(true);
+			} else {
+				if (idx >= 1 && idx <= this.items.length) {
+					this.curItem = this.items[idx - 1];
 				}
-				$('#hidden').load(encodeURI(nextURL) + ' .uk-container', function(res, status, xhr) {
-					if (status === 'error') console.log(xhr.statusText);
-					if (status === 'success') {
-						console.log(nextURL + ' loaded');
-						// new page loaded to #hidden, we now append it
-						$('.uk-section > .uk-container').append($('#hidden .uk-container').children());
-						$('#hidden').empty();
-						bind();
+			}
+			this.replaceHistory(idx);
+			UIkit.modal($('#modal-sections')).hide();
+		},
+		/**
+		 * Replace the address bar history and save the reading progress if necessary 
+		 *
+		 * @param {number} idx - One-based index of the page
+		 */
+		replaceHistory(idx) {
+			const ary = window.location.pathname.split('/');
+			ary[ary.length - 1] = idx;
+			ary.shift(); // remove leading `/`
+			ary.unshift(window.location.origin);
+			const url = ary.join('/');
+			this.saveProgress(idx);
+			history.replaceState(null, "", url);
+		},
+		/**
+		 * Updates the backend reading progress if:
+		 * 		1) the current page is more than five pages away from the last 
+		 * 			saved page, or
+		 * 		2) the average height/width ratio of the pages is over 2, or
+		 * 		3) the current page is the first page, or
+		 * 		4) the current page is the last page
+		 *
+		 * @param {number} idx - One-based index of the page
+		 * @param {function} cb - Callback
+		 */
+		saveProgress(idx, cb) {
+			idx = parseInt(idx);
+			if (Math.abs(idx - this.lastSavedPage) >= 5 ||
+				this.longPages ||
+				idx === 1 || idx === this.items.length
+			) {
+				this.lastSavedPage = idx;
+				console.log('saving progress', idx);
+
+				const url = `${base_url}api/progress/${tid}/${idx}?${$.param({eid: eid})}`;
+				$.ajax({
+						method: 'PUT',
+						url: url,
+						dataType: 'json'
+					})
+					.done(data => {
+						if (data.error)
+							alert('danger', data.error);
+						if (cb) cb();
+					})
+					.fail((jqXHR, status) => {
+						alert('danger', `Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+					});
+			}
+		},
+		/**
+		 * Updates the reader mode
+		 *
+		 * @param {string} mode - Either `continuous` or `paged`
+		 * @param {number} targetPage - The one-based index of the target page
+		 * @param {function} nextTick - Alpine $nextTick magic property
+		 */
+		updateMode(mode, targetPage, nextTick) {
+			localStorage.setItem('mode', mode);
+
+			// The mode to be put into the `mode` prop. It can't be `screen`
+			let propMode = mode;
+
+			if (mode === 'paged') {
+				const wideScreen = $(window).width() > $(window).height();
+				propMode = wideScreen ? 'height' : 'width';
+			}
+
+			this.mode = propMode;
+
+			if (mode === 'continuous') {
+				nextTick(() => {
+					this.setupScroller();
+				});
+			}
+
+			nextTick(() => {
+				this.toPage(targetPage);
+			});
+		},
+		/**
+		 * Shows the control modal
+		 *
+		 * @param {Event} event - The triggering event
+		 */
+		showControl(event) {
+			const idx = event.currentTarget.id;
+			this.selectedIndex = idx;
+			UIkit.modal($('#modal-sections')).show();
+		},
+		/**
+		 * Redirects to a URL
+		 *
+		 * @param {string} url - The target URL
+		 */
+		redirect(url) {
+			window.location.replace(url);
+		},
+		/**
+		 * Set up the scroll handler that calls `replaceHistory` when an image 
+		 * 	enters the view port
+		 */
+		setupScroller() {
+			if (this.mode !== 'continuous') return;
+			$('img').each((idx, el) => {
+				$(el).on('inview', (event, inView) => {
+					if (inView) {
+						const current = $(event.currentTarget).attr('id');
+
+						this.curItem = this.items[current - 1];
+						this.replaceHistory(current);
 					}
 				});
 			});
-	}
+		},
+		/**
+		 * Marks progress as 100% and jumps to the next entry
+		 *
+		 * @param {string} nextUrl - URL of the next entry
+		 */
+		nextEntry(nextUrl) {
+			this.saveProgress(this.items.length, () => {
+				this.redirect(nextUrl);
+			});
+		},
+		/**
+		 * Exits the reader, and sets the reading progress tp 100%
+		 *
+		 * @param {string} exitUrl - The Exit URL
+		 */
+		exitReader(exitUrl) {
+			this.saveProgress(this.items.length, () => {
+				this.redirect(exitUrl);
+			});
+		},
 
-	bind();
-});
-$('#page-select').change(function() {
-	jumpTo(parseInt($('#page-select').val()));
-});
+		/**
+		 * Handles the `change` event for the entry selector
+		 */
+		entryChanged() {
+			const id = $('#entry-select').val();
+			this.redirect(`${base_url}reader/${tid}/${id}`);
+		},
 
-function showControl(idx) {
-	const pageCount = $('#page-select > option').length;
-	const progressText = `Progress: ${idx}/${pageCount} (${(idx/pageCount * 100).toFixed(1)}%)`;
-	$('#progress-label').text(progressText);
-	$('#page-select').val(idx);
-	UIkit.modal($('#modal-sections')).show();
-}
-
-function jumpTo(page) {
-	var ary = window.location.pathname.split('/');
-	ary[ary.length - 1] = page;
-	ary.shift(); // remove leading `/`
-	ary.unshift(window.location.origin);
-	window.location.replace(ary.join('/'));
-}
-
-function replaceHistory(url) {
-	history.replaceState(null, "", url);
-	console.log('reading ' + url);
-}
-
-function redirect(url) {
-	window.location.replace(url);
+		marginChanged() {
+			localStorage.setItem('margin', this.margin);
+			this.toPage(this.selectedIndex);
+		},
+
+		preloadLookaheadChanged() {
+			localStorage.setItem('preloadLookahead', this.preloadLookahead);
+		},
+
+		enableFlipAnimationChanged() {
+			localStorage.setItem('enableFlipAnimation', this.enableFlipAnimation);
+		},
+	};
 }

public/js/subscription.js

@@ -0,0 +1,82 @@
+const component = () => {
+	return {
+		available: undefined,
+		subscriptions: [],
+
+		init() {
+			$.getJSON(`${base_url}api/admin/mangadex/expires`)
+				.done((data) => {
+					if (data.error) {
+						alert('danger', 'Failed to check MangaDex integration status. Error: ' + data.error);
+						return;
+					}
+					this.available = Boolean(data.expires && data.expires > Math.floor(Date.now() / 1000));
+
+					if (this.available) this.getSubscriptions();
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to check MangaDex integration status. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				})
+		},
+
+		getSubscriptions() {
+			$.getJSON(`${base_url}api/admin/mangadex/subscriptions`)
+				.done(data => {
+					if (data.error) {
+						alert('danger', 'Failed to get subscriptions. Error: ' + data.error);
+						return;
+					}
+					this.subscriptions = data.subscriptions;
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to get subscriptions. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				})
+		},
+
+		rm(event) {
+			const id = event.currentTarget.parentNode.getAttribute('data-id');
+			$.ajax({
+					type: 'DELETE',
+					url: `${base_url}api/admin/mangadex/subscriptions/${id}`,
+					contentType: 'application/json'
+				})
+				.done(data => {
+					if (data.error) {
+						alert('danger', `Failed to delete subscription. Error: ${data.error}`);
+					}
+					this.getSubscriptions();
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to delete subscription. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				});
+		},
+
+		check(event) {
+			const id = event.currentTarget.parentNode.getAttribute('data-id');
+			$.ajax({
+					type: 'POST',
+					url: `${base_url}api/admin/mangadex/subscriptions/check/${id}`,
+					contentType: 'application/json'
+				})
+				.done(data => {
+					if (data.error) {
+						alert('danger', `Failed to check subscription. Error: ${data.error}`);
+						return;
+					}
+					alert('success', 'Mango is now checking the subscription for updates. This might take a while, but you can safely leave the page.');
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Failed to check subscription. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				});
+		},
+
+		formatRange(min, max) {
+			if (!isNaN(min) && isNaN(max)) return `≥ ${min}`;
+			if (isNaN(min) && !isNaN(max)) return `≤ ${max}`;
+			if (isNaN(min) && isNaN(max)) return 'All';
+
+			if (min === max) return `= ${min}`;
+			return `${min} - ${max}`;
+		}
+	};
+};

public/js/theme.js

@@ -1,72 +0,0 @@
-// https://flaviocopes.com/javascript-detect-dark-mode/
-const preferDarkMode = () => {
-	return window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
-};
-
-const validThemeSetting = (theme) => {
-	return ['dark', 'light', 'system'].indexOf(theme) >= 0;
-};
-
-// dark / light / system
-const loadThemeSetting = () => {
-	let str = localStorage.getItem('theme');
-	if (!str || !validThemeSetting(str)) str = 'light';
-	return str;
-};
-
-// dark / light
-const loadTheme = () => {
-	let setting = loadThemeSetting();
-	if (setting === 'system') {
-		setting = preferDarkMode() ? 'dark' : 'light';
-	}
-	return setting;
-};
-
-const saveThemeSetting = setting => {
-	if (!validThemeSetting(setting)) setting = 'light';
-	localStorage.setItem('theme', setting);
-};
-
-// when toggled, Auto will be changed to light or dark
-const toggleTheme = () => {
-	const theme = loadTheme();
-	const newTheme = theme === 'dark' ? 'light' : 'dark';
-	saveThemeSetting(newTheme);
-	setTheme(newTheme);
-};
-
-const setTheme = (theme) => {
-	if (!theme) theme = loadTheme();
-	if (theme === 'dark') {
-		$('html').css('background', 'rgb(20, 20, 20)');
-		$('body').addClass('uk-light');
-		$('.uk-card').addClass('uk-card-secondary');
-		$('.uk-card').removeClass('uk-card-default');
-		$('.ui-widget-content').addClass('dark');
-	} else {
-		$('html').css('background', '');
-		$('body').removeClass('uk-light');
-		$('.uk-card').removeClass('uk-card-secondary');
-		$('.uk-card').addClass('uk-card-default');
-		$('.ui-widget-content').removeClass('dark');
-	}
-};
-
-// do it before document is ready to prevent the initial flash of white on
-// 	most pages
-setTheme();
-
-$(() => {
-	// hack for the reader page
-	setTheme();
-
-	// on system dark mode setting change
-	if (window.matchMedia) {
-		window.matchMedia('(prefers-color-scheme: dark)')
-			.addEventListener('change', event => {
-				if (loadThemeSetting() === 'system')
-					setTheme(event.matches ? 'dark' : 'light');
-			});
-	}
-});

public/js/title.js

@@ -55,7 +55,7 @@ function showModal(encodedPath, pages, percentage, encodedeTitle, encodedEntryTi
 
 	$('#modal-edit-btn').attr('onclick', `edit("${entryID}")`);
 
-	$('#modal-download-btn').attr('href', `/opds/download/${titleID}/${entryID}`);
+	$('#modal-download-btn').attr('href', `${base_url}api/download/${titleID}/${entryID}`);
 
 	UIkit.modal($('#modal')).show();
 }
@@ -63,18 +63,27 @@ function showModal(encodedPath, pages, percentage, encodedeTitle, encodedEntryTi
 const updateProgress = (tid, eid, page) => {
 	let url = `${base_url}api/progress/${tid}/${page}`
 	const query = $.param({
-		entry: eid
+		eid: eid
 	});
 	if (eid)
 		url += `?${query}`;
-	$.post(url, (data) => {
-		if (data.success) {
-			location.reload();
-		} else {
-			error = data.error;
-			alert('danger', error);
-		}
-	});
+
+	$.ajax({
+			method: 'PUT',
+			url: url,
+			dataType: 'json'
+		})
+		.done(data => {
+			if (data.success) {
+				location.reload();
+			} else {
+				error = data.error;
+				alert('danger', error);
+			}
+		})
+		.fail((jqXHR, status) => {
+			alert('danger', `Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+		});
 };
 
 const renameSubmit = (name, eid) => {
@@ -89,14 +98,14 @@ const renameSubmit = (name, eid) => {
 	}
 
 	const query = $.param({
-		entry: eid
+		eid: eid
 	});
 	let url = `${base_url}api/admin/display_name/${titleId}/${name}`;
 	if (eid)
 		url += `?${query}`;
 
 	$.ajax({
-			type: 'POST',
+			type: 'PUT',
 			url: url,
 			contentType: "application/json",
 			dataType: 'json'
@@ -131,6 +140,7 @@ const edit = (eid) => {
 
 	const displayNameField = $('#display-name-field');
 	displayNameField.attr('value', displayName);
+	console.log(displayNameField);
 	displayNameField.keyup(event => {
 		if (event.keyCode === 13) {
 			renameSubmit(displayNameField.val(), eid);
@@ -150,10 +160,10 @@ const setupUpload = (eid) => {
 	const bar = $('#upload-progress').get(0);
 	const titleId = upload.attr('data-title-id');
 	const queryObj = {
-		title: titleId
+		tid: titleId
 	};
 	if (eid)
-		queryObj['entry'] = eid;
+		queryObj['eid'] = eid;
 	const query = $.param(queryObj);
 	const url = `${base_url}api/admin/upload/cover?${query}`;
 	console.log(url);
@@ -218,9 +228,9 @@ const selectedIDs = () => {
 const bulkProgress = (action, el) => {
 	const tid = $(el).attr('data-id');
 	const ids = selectedIDs();
-	const url = `${base_url}api/bulk-progress/${action}/${tid}`;
+	const url = `${base_url}api/bulk_progress/${action}/${tid}`;
 	$.ajax({
-			type: 'POST',
+			type: 'PUT',
 			url: url,
 			contentType: "application/json",
 			dataType: 'json',
@@ -242,3 +252,85 @@ const bulkProgress = (action, el) => {
 			deselectAll();
 		});
 };
+
+const tagsComponent = () => {
+	return {
+		isAdmin: false,
+		tags: [],
+		tid: $('.upload-field').attr('data-title-id'),
+		loading: true,
+
+		load(admin) {
+			this.isAdmin = admin;
+
+			$('.tag-select').select2({
+				tags: true,
+				placeholder: this.isAdmin ? 'Tag the title' : 'No tags found',
+				disabled: !this.isAdmin,
+				templateSelection(state) {
+					const a = document.createElement('a');
+					a.setAttribute('href', `${base_url}tags/${encodeURIComponent(state.text)}`);
+					a.setAttribute('class', 'uk-link-reset');
+					a.onclick = event => {
+						event.stopPropagation();
+					};
+					a.innerText = state.text;
+					return a;
+				}
+			});
+
+			this.request(`${base_url}api/tags`, 'GET', (data) => {
+				const allTags = data.tags;
+				const url = `${base_url}api/tags/${this.tid}`;
+				this.request(url, 'GET', data => {
+					this.tags = data.tags;
+					allTags.forEach(t => {
+						const op = new Option(t, t, false, this.tags.indexOf(t) >= 0);
+						$('.tag-select').append(op);
+					});
+					$('.tag-select').on('select2:select', e => {
+						this.onAdd(e);
+					});
+					$('.tag-select').on('select2:unselect', e => {
+						this.onDelete(e);
+					});
+					$('.tag-select').on('change', () => {
+						this.onChange();
+					});
+					$('.tag-select').trigger('change');
+					this.loading = false;
+				});
+			});
+		},
+		onChange() {
+			this.tags = $('.tag-select').select2('data').map(o => o.text);
+		},
+		onAdd(event) {
+			const tag = event.params.data.text;
+			const url = `${base_url}api/admin/tags/${this.tid}/${encodeURIComponent(tag)}`;
+			this.request(url, 'PUT');
+		},
+		onDelete(event) {
+			const tag = event.params.data.text;
+			const url = `${base_url}api/admin/tags/${this.tid}/${encodeURIComponent(tag)}`;
+			this.request(url, 'DELETE');
+		},
+		request(url, method, cb) {
+			$.ajax({
+					url: url,
+					method: method,
+					dataType: 'json'
+				})
+				.done(data => {
+					if (data.success) {
+						if (cb) cb(data);
+					} else {
+						alert('danger', data.error);
+					}
+				})
+				.fail((jqXHR, status) => {
+					alert('danger', `Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+				});
+		}
+	};
+};

public/js/user.js

@@ -1,11 +1,16 @@
-function remove(username) {
-	$.post(base_url + 'api/admin/user/delete/' + username, function(data) {
-		if (data.success) {
-			location.reload();
-		}
-		else {
-			error = data.error;
-			alert('danger', error);
-		}
-	});
-}
+const remove = (username) => {
+	$.ajax({
+			url: `${base_url}api/admin/user/delete/${username}`,
+			type: 'DELETE',
+			dataType: 'json'
+		})
+		.done(data => {
+			if (data.success)
+				location.reload();
+			else
+				alert('danger', data.error);
+		})
+		.fail((jqXHR, status) => {
+			alert('danger', `Failed to delete the user. Error: [${jqXHR.status}] ${jqXHR.statusText}`);
+		});
+};

shard.lock

@@ -1,54 +1,78 @@
-version: 1.0
+version: 2.0
 shards:
   ameba:
-    github: crystal-ameba/ameba
-    version: 0.12.1
+    git: https://github.com/crystal-ameba/ameba.git
+    version: 0.14.3
 
   archive:
-    github: hkalexling/archive.cr
-    version: 0.4.0
+    git: https://github.com/hkalexling/archive.cr.git
+    version: 0.5.0
 
   baked_file_system:
-    github: schovi/baked_file_system
-    version: 0.9.8
+    git: https://github.com/schovi/baked_file_system.git
+    version: 0.10.0
 
   clim:
-    github: at-grandpa/clim
-    version: 0.12.0
+    git: https://github.com/at-grandpa/clim.git
+    version: 0.17.1
 
   db:
-    github: crystal-lang/crystal-db
-    version: 0.9.0
+    git: https://github.com/crystal-lang/crystal-db.git
+    version: 0.10.1
 
   duktape:
-    github: jessedoyle/duktape.cr
-    version: 0.20.0
+    git: https://github.com/jessedoyle/duktape.cr.git
+    version: 1.0.0
 
   exception_page:
-    github: crystal-loot/exception_page
-    version: 0.1.4
+    git: https://github.com/crystal-loot/exception_page.git
+    version: 0.1.5
+
+  http_proxy:
+    git: https://github.com/mamantoha/http_proxy.git
+    version: 0.8.0
+
+  image_size:
+    git: https://github.com/hkalexling/image_size.cr.git
+    version: 0.5.0
 
   kemal:
-    github: kemalcr/kemal
-    version: 0.26.1
+    git: https://github.com/kemalcr/kemal.git
+    version: 1.0.0
 
   kemal-session:
-    github: kemalcr/kemal-session
-    version: 0.12.1
+    git: https://github.com/kemalcr/kemal-session.git
+    version: 1.0.0
 
   kilt:
-    github: jeromegn/kilt
-    version: 0.4.0
+    git: https://github.com/jeromegn/kilt.git
+    version: 0.4.1
+
+  koa:
+    git: https://github.com/hkalexling/koa.git
+    version: 0.8.0
+
+  mg:
+    git: https://github.com/hkalexling/mg.git
+    version: 0.5.0+git.commit.697e46e27cde8c3969346e228e372db2455a6264
 
   myhtml:
-    github: kostya/myhtml
-    version: 1.5.1
+    git: https://github.com/kostya/myhtml.git
+    version: 1.5.8
+
+  open_api:
+    git: https://github.com/hkalexling/open_api.cr.git
+    version: 1.2.1+git.commit.1d3c55dd5534c6b0af18964d031858a08515553a
 
   radix:
-    github: luislavena/radix
-    version: 0.3.9
+    git: https://github.com/luislavena/radix.git
+    version: 0.4.1
 
   sqlite3:
-    github: crystal-lang/crystal-sqlite3
-    version: 0.16.0
+    git: https://github.com/crystal-lang/crystal-sqlite3.git
+    version: 0.18.0
+
+  tallboy:
+    git: https://github.com/epoch/tallboy.git
+    version: 0.9.3+git.commit.9be1510bb0391c95e92f1b288f3afb429a73caa6
 

shard.yml

@@ -1,5 +1,5 @@
 name: mango
-version: 0.10.0
+version: 0.24.0
 
 authors:
   - Alex Ling <hkalexling@gmail.com>
@@ -8,7 +8,7 @@ targets:
   mango:
     main: src/mango.cr
 
-crystal: 0.34.0
+crystal: 1.0.0
 
 license: MIT
 
@@ -29,6 +29,16 @@ dependencies:
     github: at-grandpa/clim
   duktape:
     github: jessedoyle/duktape.cr
-    version: ~> 0.20.0
   myhtml:
     github: kostya/myhtml
+  http_proxy:
+    github: mamantoha/http_proxy
+  image_size:
+   github: hkalexling/image_size.cr
+  koa:
+    github: hkalexling/koa
+  tallboy:
+    github: epoch/tallboy
+    branch: master
+  mg:
+   github: hkalexling/mg

spec/rename_spec.cr

@@ -40,11 +40,6 @@ describe Rule do
     rule.render({"a" => "a", "b" => "b"}).should eq "a"
   end
 
-  it "allows `|` outside of patterns" do
-    rule = Rule.new "hello|world"
-    rule.render({} of String => String).should eq "hello|world"
-  end
-
   it "raises on escaped characters" do
     expect_raises Exception do
       Rule.new "hello/world"
@@ -69,8 +64,13 @@ describe Rule do
     rule.render({} of String => String).should eq "testing"
   end
 
-  it "escapes slash" do
-    rule = Rule.new "{id}"
-    rule.render({"id" => "/hello/world"}).should eq "_hello_world"
+  it "escapes illegal characters" do
+    rule = Rule.new "{a}"
+    rule.render({"a" => "/?<>:*|\"^"}).should eq "_________"
+  end
+
+  it "strips trailing spaces and dots" do
+    rule = Rule.new "hello. world. .."
+    rule.render({} of String => String).should eq "hello. world"
   end
 end

spec/spec_helper.cr

@@ -2,6 +2,7 @@ require "spec"
 require "../src/queue"
 require "../src/server"
 require "../src/config"
+require "../src/main_fiber"
 
 class State
   @@hash = {} of String => String

spec/storage_spec.cr

@@ -8,9 +8,7 @@ describe Storage do
   end
 
   it "deletes user" do
-    with_storage do |storage|
-      storage.delete_user "admin"
-    end
+    with_storage &.delete_user "admin"
   end
 
   it "creates new user" do

spec/util_spec.cr

@@ -21,7 +21,7 @@ describe "compare_numerically" do
   it "sorts like the stack exchange post" do
     ary = ["2", "12", "200000", "1000000", "a", "a12", "b2", "text2",
            "text2a", "text2a2", "text2a12", "text2ab", "text12", "text12a"]
-    ary.reverse.sort { |a, b|
+    ary.reverse.sort! { |a, b|
       compare_numerically a, b
     }.should eq ary
   end
@@ -29,18 +29,45 @@ describe "compare_numerically" do
   # https://github.com/hkalexling/Mango/issues/22
   it "handles numbers larger than Int32" do
     ary = ["14410155591588.jpg", "21410155591588.png", "104410155591588.jpg"]
-    ary.reverse.sort { |a, b|
+    ary.reverse.sort! { |a, b|
       compare_numerically a, b
     }.should eq ary
   end
 end
 
+describe "is_supported_file" do
+  it "returns true when the filename has a supported extension" do
+    filename = "manga.cbz"
+    is_supported_file(filename).should eq true
+  end
+
+  it "returns true when the filename does not have a supported extension" do
+    filename = "info.json"
+    is_supported_file(filename).should eq false
+  end
+
+  it "is case insensitive" do
+    filename = "manga.ZiP"
+    is_supported_file(filename).should eq true
+  end
+end
+
 describe "chapter_sort" do
   it "sorts correctly" do
     ary = ["Vol.1 Ch.01", "Vol.1 Ch.02", "Vol.2 Ch. 2.5", "Ch. 3", "Ch.04"]
     sorter = ChapterSorter.new ary
-    ary.reverse.sort do |a, b|
+    ary.reverse.sort! do |a, b|
       sorter.compare a, b
     end.should eq ary
   end
 end
+
+describe "sanitize_filename" do
+  it "returns a random string for empty sanitized string" do
+    sanitize_filename("..").should_not eq sanitize_filename("..")
+  end
+  it "sanitizes correctly" do
+    sanitize_filename("..  \n\v.\rマンゴー/|*()<[1/2] 3.14 hello world ")
+      .should eq "マンゴー_()[1_2] 3.14 hello world"
+  end
+end

src/archive.cr

@@ -1,13 +1,13 @@
-require "zip"
+require "compress/zip"
 require "archive"
 
-# A unified class to handle all supported archive formats. It uses the ::Zip
-#   module in crystal standard library if the target file is a zip archive.
-#   Otherwise it uses `archive.cr`.
+# A unified class to handle all supported archive formats. It uses the
+#   Compress::Zip module in crystal standard library if the target file is
+#   a zip archive. Otherwise it uses `archive.cr`.
 class ArchiveFile
   def initialize(@filename : String)
     if [".cbz", ".zip"].includes? File.extname filename
-      @archive_file = Zip::File.new filename
+      @archive_file = Compress::Zip::File.new filename
     else
       @archive_file = Archive::File.new filename
     end
@@ -20,16 +20,16 @@ class ArchiveFile
   end
 
   def close
-    if @archive_file.is_a? Zip::File
-      @archive_file.as(Zip::File).close
+    if @archive_file.is_a? Compress::Zip::File
+      @archive_file.as(Compress::Zip::File).close
     end
   end
 
   # Lists all file entries
   def entries
-    ary = [] of Zip::File::Entry | Archive::Entry
+    ary = [] of Compress::Zip::File::Entry | Archive::Entry
     @archive_file.entries.map do |e|
-      if (e.is_a? Zip::File::Entry && e.file?) ||
+      if (e.is_a? Compress::Zip::File::Entry && e.file?) ||
          (e.is_a? Archive::Entry && e.info.file?)
         ary.push e
       end
@@ -37,8 +37,8 @@ class ArchiveFile
     ary
   end
 
-  def read_entry(e : Zip::File::Entry | Archive::Entry) : Bytes?
-    if e.is_a? Zip::File::Entry
+  def read_entry(e : Compress::Zip::File::Entry | Archive::Entry) : Bytes?
+    if e.is_a? Compress::Zip::File::Entry
       data = nil
       e.open do |io|
         slice = Bytes.new e.uncompressed_size

src/assets/lang_codes.csv

@@ -1,41 +0,0 @@
-Arabic,sa
-Bengali,bd
-Bulgarian,bg
-Burmese,mm
-Catalan,ct
-Chinese (Simp),cn
-Chinese (Trad),hk
-Czech,cz
-Danish,dk
-Dutch,nl
-English,gb
-Filipino,ph
-Finnish,fi
-French,fr
-German,de
-Greek,gr
-Hebrew,il
-Hindi,in
-Hungarian,hu
-Indonesian,id
-Italian,it
-Japanese,jp
-Korean,kr
-Lithuanian,lt
-Malay,my
-Mongolian,mn
-Other,
-Persian,ir
-Polish,pl
-Portuguese (Br),br
-Portuguese (Pt),pt
-Romanian,ro
-Russian,ru
-Serbo-Croatian,rs
-Spanish (Es),es
-Spanish (LATAM),mx
-Swedish,se
-Thai,th
-Turkish,tr
-Ukrainian,ua
-Vietnames,vn

src/config.cr

@@ -5,25 +5,35 @@ class Config
 
   @[YAML::Field(ignore: true)]
   property path : String = ""
+  property host : String = "0.0.0.0"
   property port : Int32 = 9000
   property base_url : String = "/"
   property session_secret : String = "mango-session-secret"
   property library_path : String = File.expand_path "~/mango/library",
     home: true
+  property library_cache_path = File.expand_path "~/mango/library.yml.gz",
+    home: true
   property db_path : String = File.expand_path "~/mango/mango.db", home: true
-  @[YAML::Field(key: "scan_interval_minutes")]
-  property scan_interval : Int32 = 5
+  property scan_interval_minutes : Int32 = 5
+  property thumbnail_generation_interval_hours : Int32 = 24
   property log_level : String = "info"
   property upload_path : String = File.expand_path "~/mango/uploads",
     home: true
   property plugin_path : String = File.expand_path "~/mango/plugins",
     home: true
+  property download_timeout_seconds : Int32 = 30
+  property cache_enabled = false
+  property cache_size_mbs = 50
+  property cache_log_enabled = true
+  property disable_login = false
+  property default_username = ""
+  property auth_proxy_header_name = ""
   property mangadex = Hash(String, String | Int32).new
 
   @[YAML::Field(ignore: true)]
   @mangadex_defaults = {
     "base_url"               => "https://mangadex.org",
-    "api_url"                => "https://mangadex.org/api",
+    "api_url"                => "https://api.mangadex.org/v2",
     "download_wait_seconds"  => 5,
     "download_retries"       => 4,
     "download_queue_db_path" => File.expand_path("~/mango/queue.db",
@@ -47,17 +57,13 @@ class Config
     cfg_path = File.expand_path path, home: true
     if File.exists? cfg_path
       config = self.from_yaml File.read cfg_path
-      config.preprocess
       config.path = path
       config.fill_defaults
+      config.preprocess
       return config
     end
-    puts "The config file #{cfg_path} does not exist." \
-         " Do you want mango to dump the default config there? [Y/n]"
-    input = gets
-    if input && input.downcase == "n"
-      abort "Aborting..."
-    end
+    puts "The config file #{cfg_path} does not exist. " \
+         "Dumping the default config there."
     default = self.allocate
     default.path = path
     default.fill_defaults
@@ -87,5 +93,28 @@ class Config
     unless base_url.ends_with? "/"
       @base_url += "/"
     end
+    if disable_login && default_username.empty?
+      raise "Login is disabled, but default username is not set. " \
+            "Please set a default username"
+    end
+
+    # `Logger.default` is not available yet
+    Log.setup :debug
+    unless mangadex["api_url"] =~ /\/v2/
+      Log.warn { "It looks like you are using the deprecated MangaDex API " \
+                 "v1 in your config file. Please update it to " \
+                 "https://api.mangadex.org/v2 to suppress this warning." }
+      mangadex["api_url"] = "https://api.mangadex.org/v2"
+    end
+    if mangadex["api_url"] =~ /\/api\/v2/
+      Log.warn { "It looks like you are using the outdated MangaDex API " \
+                 "url (mangadex.org/api/v2) in your config file. Please " \
+                 "update it to https://api.mangadex.org/v2 to suppress this " \
+                 "warning." }
+      mangadex["api_url"] = "https://api.mangadex.org/v2"
+    end
+
+    mangadex["api_url"] = mangadex["api_url"].to_s.rstrip "/"
+    mangadex["base_url"] = mangadex["base_url"].to_s.rstrip "/"
   end
 end

src/handlers/auth_handler.cr

@@ -11,24 +11,25 @@ class AuthHandler < Kemal::Handler
                  "You have to login with proper credentials"
   HEADER_LOGIN_REQUIRED = "Basic realm=\"Login Required\""
 
-  def initialize(@storage : Storage)
-  end
-
   def require_basic_auth(env)
     env.response.status_code = 401
     env.response.headers["WWW-Authenticate"] = HEADER_LOGIN_REQUIRED
     env.response.print AUTH_MESSAGE
-    call_next env
+  end
+
+  def require_auth(env)
+    env.session.string "callback", env.request.path
+    redirect env, "/login"
   end
 
   def validate_token(env)
     token = env.session.string? "token"
-    !token.nil? && @storage.verify_token token
+    !token.nil? && Storage.default.verify_token token
   end
 
   def validate_token_admin(env)
     token = env.session.string? "token"
-    !token.nil? && @storage.verify_admin token
+    !token.nil? && Storage.default.verify_admin token
   end
 
   def validate_auth_header(env)
@@ -49,44 +50,53 @@ class AuthHandler < Kemal::Handler
   def verify_user(value)
     username, password = Base64.decode_string(value[BASIC.size + 1..-1])
       .split(":")
-    @storage.verify_user username, password
+    Storage.default.verify_user username, password
   end
 
-  def handle_opds_auth(env)
-    if validate_token(env) || validate_auth_header(env)
-      call_next env
-    else
-      env.response.status_code = 401
-      env.response.headers["WWW-Authenticate"] = HEADER_LOGIN_REQUIRED
-      env.response.print AUTH_MESSAGE
-    end
-  end
-
-  def handle_auth(env)
+  def call(env)
+    # Skip all authentication if requesting /login, /logout, or a static file
     if request_path_startswith(env, ["/login", "/logout"]) ||
        requesting_static_file env
       return call_next(env)
     end
 
-    unless validate_token env
-      env.session.string "callback", env.request.path
-      return redirect env, "/login"
+    # Check user is logged in
+    if validate_token env
+      # Skip if the request has a valid token
+    elsif Config.current.disable_login
+      # Check default username if login is disabled
+      unless Storage.default.username_exists Config.current.default_username
+        Logger.warn "Default username #{Config.current.default_username} " \
+                    "does not exist"
+        return require_auth env
+      end
+    elsif !Config.current.auth_proxy_header_name.empty?
+      # Check auth proxy if present
+      username = env.request.headers[Config.current.auth_proxy_header_name]?
+      unless username && Storage.default.username_exists username
+        Logger.warn "Header #{Config.current.auth_proxy_header_name} unset " \
+                    "or is not a valid username"
+        return require_auth env
+      end
+    elsif request_path_startswith env, ["/opds"]
+      # Check auth header if requesting an opds page
+      unless validate_auth_header env
+        return require_basic_auth env
+      end
+    else
+      return require_auth env
     end
 
-    if request_path_startswith env, ["/admin", "/api/admin", "/download"]
-      unless validate_token_admin env
+    # Check admin access when requesting an admin page
+    if request_path_startswith env, %w(/admin /api/admin /download)
+      unless is_admin? env
         env.response.status_code = 403
+        return send_error_page "HTTP 403: You are not authorized to visit " \
+                               "#{env.request.path}"
       end
     end
 
+    # Let the request go through if it passes the above checks
     call_next env
   end
-
-  def call(env)
-    if request_path_startswith env, ["/opds"]
-      handle_opds_auth env
-    else
-      handle_auth env
-    end
-  end
 end

src/handlers/static_handler.cr

@@ -23,7 +23,7 @@ class StaticHandler < Kemal::Handler
 
       slice = Bytes.new file.size
       file.read slice
-      return send_file env, slice, file.mime_type
+      return send_file env, slice, MIME.from_filename file.path
     end
     call_next env
   end

src/library/cache.cr

@@ -0,0 +1,188 @@
+require "digest"
+
+require "./entry"
+require "./types"
+
+# Base class for an entry in the LRU cache.
+# There are two ways to use it:
+#   1. Use it as it is by instantiating with the appropriate `SaveT` and
+#     `ReturnT`. Note that in this case, `SaveT` and `ReturnT` must be the
+#     same type. That is, the input value will be stored as it is without
+#     any transformation.
+#   2. You can also subclass it and provide custom implementations for
+#     `to_save_t` and `to_return_t`. This allows you to transform and store
+#     the input value to a different type. See `SortedEntriesCacheEntry` as
+#     an example.
+private class CacheEntry(SaveT, ReturnT)
+  getter key : String, atime : Time
+
+  @value : SaveT
+
+  def initialize(@key : String, value : ReturnT)
+    @atime = @ctime = Time.utc
+    @value = self.class.to_save_t value
+  end
+
+  def value
+    @atime = Time.utc
+    self.class.to_return_t @value
+  end
+
+  def self.to_save_t(value : ReturnT)
+    value
+  end
+
+  def self.to_return_t(value : SaveT)
+    value
+  end
+
+  def instance_size
+    instance_sizeof(CacheEntry(SaveT, ReturnT)) + # sizeof itself
+      instance_sizeof(String) + @key.bytesize +   # allocated memory for @key
+      @value.instance_size
+  end
+end
+
+class SortedEntriesCacheEntry < CacheEntry(Array(String), Array(Entry))
+  def self.to_save_t(value : Array(Entry))
+    value.map &.id
+  end
+
+  def self.to_return_t(value : Array(String))
+    ids_to_entries value
+  end
+
+  private def self.ids_to_entries(ids : Array(String))
+    e_map = Library.default.deep_entries.to_h { |entry| {entry.id, entry} }
+    entries = [] of Entry
+    begin
+      ids.each do |id|
+        entries << e_map[id]
+      end
+      return entries if ids.size == entries.size
+    rescue
+    end
+  end
+
+  def instance_size
+    instance_sizeof(SortedEntriesCacheEntry) +  # sizeof itself
+      instance_sizeof(String) + @key.bytesize + # allocated memory for @key
+      @value.size * (instance_sizeof(String) + sizeof(String)) +
+      @value.sum(&.bytesize) # elements in Array(String)
+  end
+
+  def self.gen_key(book_id : String, username : String,
+                   entries : Array(Entry), opt : SortOptions?)
+    entries_sig = Digest::SHA1.hexdigest (entries.map &.id).to_s
+    user_context = opt && opt.method == SortMethod::Progress ? username : ""
+    sig = Digest::SHA1.hexdigest (book_id + entries_sig + user_context +
+                                  (opt ? opt.to_tuple.to_s : "nil"))
+    "#{sig}:sorted_entries"
+  end
+end
+
+class String
+  def instance_size
+    instance_sizeof(String) + bytesize
+  end
+end
+
+struct Tuple(*T)
+  def instance_size
+    sizeof(T) + # total size of non-reference types
+      self.sum do |e|
+        next 0 unless e.is_a? Reference
+        if e.responds_to? :instance_size
+          e.instance_size
+        else
+          instance_sizeof(typeof(e))
+        end
+      end
+  end
+end
+
+alias CacheableType = Array(Entry) | String | Tuple(String, Int32)
+alias CacheEntryType = SortedEntriesCacheEntry |
+                       CacheEntry(String, String) |
+                       CacheEntry(Tuple(String, Int32), Tuple(String, Int32))
+
+def generate_cache_entry(key : String, value : CacheableType)
+  if value.is_a? Array(Entry)
+    SortedEntriesCacheEntry.new key, value
+  else
+    CacheEntry(typeof(value), typeof(value)).new key, value
+  end
+end
+
+# LRU Cache
+class LRUCache
+  @@limit : Int128 = Int128.new 0
+  @@should_log = true
+  # key => entry
+  @@cache = {} of String => CacheEntryType
+
+  def self.enabled
+    Config.current.cache_enabled
+  end
+
+  def self.init
+    cache_size = Config.current.cache_size_mbs
+    @@limit = Int128.new cache_size * 1024 * 1024 if enabled
+    @@should_log = Config.current.cache_log_enabled
+  end
+
+  def self.get(key : String)
+    return unless enabled
+    entry = @@cache[key]?
+    if @@should_log
+      Logger.debug "LRUCache #{entry.nil? ? "miss" : "hit"} #{key}"
+    end
+    return entry.value unless entry.nil?
+  end
+
+  def self.set(cache_entry : CacheEntryType)
+    return unless enabled
+    key = cache_entry.key
+    @@cache[key] = cache_entry
+    Logger.debug "LRUCache cached #{key}" if @@should_log
+    remove_least_recent_access
+  end
+
+  def self.invalidate(key : String)
+    return unless enabled
+    @@cache.delete key
+  end
+
+  def self.print
+    return unless @@should_log
+    sum = @@cache.sum { |_, entry| entry.instance_size }
+    Logger.debug "---- LRU Cache ----"
+    Logger.debug "Size: #{sum} Bytes"
+    Logger.debug "List:"
+    @@cache.each do |k, v|
+      Logger.debug "#{k} | #{v.atime} | #{v.instance_size}"
+    end
+    Logger.debug "-------------------"
+  end
+
+  private def self.is_cache_full
+    sum = @@cache.sum { |_, entry| entry.instance_size }
+    sum > @@limit
+  end
+
+  private def self.remove_least_recent_access
+    if @@should_log && is_cache_full
+      Logger.debug "Removing entries from LRUCache"
+    end
+    while is_cache_full && @@cache.size > 0
+      min_tuple = @@cache.min_by { |_, entry| entry.atime }
+      min_key = min_tuple[0]
+      min_entry = min_tuple[1]
+
+      Logger.debug "  \
+        Target: #{min_key}, \
+        Last Access Time: #{min_entry.atime}" if @@should_log
+      invalidate min_key
+    end
+  end
+end

src/library/entry.cr

@@ -1,20 +1,26 @@
+require "image_size"
+require "yaml"
+
 class Entry
-  property zip_path : String, book : Title, title : String,
+  include YAML::Serializable
+
+  getter zip_path : String, book : Title, title : String,
     size : String, pages : Int32, id : String, encoded_path : String,
     encoded_title : String, mtime : Time, err_msg : String?
 
-  def initialize(@zip_path, @book, storage)
+  def initialize(@zip_path, @book)
+    storage = Storage.default
     @encoded_path = URI.encode @zip_path
     @title = File.basename @zip_path, File.extname @zip_path
     @encoded_title = URI.encode @title
     @size = (File.size @zip_path).humanize_bytes
-    id = storage.get_id @zip_path, false
+    id = storage.get_entry_id @zip_path, File.signature(@zip_path)
     if id.nil?
       id = random_str
-      storage.insert_id({
-        path:     @zip_path,
-        id:       id,
-        is_title: false,
+      storage.insert_entry_id({
+        path:      @zip_path,
+        id:        id,
+        signature: File.signature(@zip_path).to_s,
       })
     end
     @id = id
@@ -43,17 +49,20 @@ class Entry
     file.close
   end
 
-  def to_json(json : JSON::Builder)
-    json.object do
-      {% for str in ["zip_path", "title", "size", "id",
-                     "encoded_path", "encoded_title"] %}
+  def build_json(*, slim = false)
+    JSON.build do |json|
+      json.object do
+        {% for str in ["zip_path", "title", "size", "id"] %}
         json.field {{str}}, @{{str.id}}
       {% end %}
-      json.field "title_id", @book.id
-      json.field "display_name", @book.display_name @title
-      json.field "cover_url", cover_url
-      json.field "pages" { json.number @pages }
-      json.field "mtime" { json.number @mtime.to_unix }
+        json.field "title_id", @book.id
+        json.field "pages" { json.number @pages }
+        unless slim
+          json.field "display_name", @book.display_name @title
+          json.field "cover_url", cover_url
+          json.field "mtime" { json.number @mtime.to_unix }
+        end
+      end
     end
   end
 
@@ -67,9 +76,17 @@ class Entry
 
   def cover_url
     return "#{Config.current.base_url}img/icon.png" if @err_msg
-    url = "#{Config.current.base_url}api/page/#{@book.id}/#{@id}/1"
-    TitleInfo.new @book.dir do |info|
-      info_url = info.entry_cover_url[@title]?
+
+    unless @book.entry_cover_url_cache
+      TitleInfo.new @book.dir do |info|
+        @book.entry_cover_url_cache = info.entry_cover_url
+      end
+    end
+    entry_cover_url = @book.entry_cover_url_cache
+
+    url = "#{Config.current.base_url}api/cover/#{@book.id}/#{@id}"
+    if entry_cover_url
+      info_url = entry_cover_url[@title]?
       unless info_url.nil? || info_url.empty?
         url = File.join Config.current.base_url, info_url
       end
@@ -77,19 +94,25 @@ class Entry
     url
   end
 
-  def read_page(page_num)
-    raise "Unreadble archive. #{@err_msg}" if @err_msg
-    img = nil
+  private def sorted_archive_entries
     ArchiveFile.open @zip_path do |file|
-      page = file.entries
+      entries = file.entries
         .select { |e|
           SUPPORTED_IMG_TYPES.includes? \
             MIME.from_filename? e.filename
         }
-        .sort { |a, b|
+        .sort! { |a, b|
           compare_numerically a.filename, b.filename
         }
-        .[page_num - 1]
+      yield file, entries
+    end
+  end
+
+  def read_page(page_num)
+    raise "Unreadble archive. #{@err_msg}" if @err_msg
+    img = nil
+    sorted_archive_entries do |file, entries|
+      page = entries[page_num - 1]
       data = file.read_entry page
       if data
         img = Image.new data, MIME.from_filename(page.filename), page.filename,
@@ -99,6 +122,26 @@ class Entry
     img
   end
 
+  def page_dimensions
+    sizes = [] of Hash(String, Int32)
+    sorted_archive_entries do |file, entries|
+      entries.each_with_index do |e, i|
+        begin
+          data = file.read_entry(e).not_nil!
+          size = ImageSize.get data
+          sizes << {
+            "width"  => size.width,
+            "height" => size.height,
+          }
+        rescue e
+          Logger.warn "Failed to read page #{i} of entry #{zip_path}. #{e}"
+          sizes << {"width" => 1000_i32, "height" => 1000_i32}
+        end
+      end
+    end
+    sizes
+  end
+
   def next_entry(username)
     entries = @book.sorted_entries username
     idx = entries.index self
@@ -106,10 +149,11 @@ class Entry
     entries[idx + 1]
   end
 
-  def previous_entry
-    idx = @book.entries.index self
+  def previous_entry(username)
+    entries = @book.sorted_entries username
+    idx = entries.index self
     return nil if idx.nil? || idx == 0
-    @book.entries[idx - 1]
+    entries[idx - 1]
   end
 
   def date_added
@@ -129,6 +173,16 @@ class Entry
   # For backward backward compatibility with v0.1.0, we save entry titles
   #   instead of IDs in info.json
   def save_progress(username, page)
+    LRUCache.invalidate "#{@book.id}:#{username}:progress_sum"
+    @book.parents.each do |parent|
+      LRUCache.invalidate "#{parent.id}:#{username}:progress_sum"
+    end
+    [false, true].each do |ascend|
+      sorted_entries_cache_key = SortedEntriesCacheEntry.gen_key @book.id,
+        username, @book.entries, SortOptions.new(SortMethod::Progress, ascend)
+      LRUCache.invalidate sorted_entries_cache_key
+    end
+
     TitleInfo.new @book.dir do |info|
       if info.progress[username]?.nil?
         info.progress[username] = {@title => page}
@@ -179,4 +233,33 @@ class Entry
   def started?(username)
     load_progress(username) > 0
   end
+
+  def generate_thumbnail : Image?
+    return if @err_msg
+
+    img = read_page(1).not_nil!
+    begin
+      size = ImageSize.get img.data
+      if size.height > size.width
+        thumbnail = ImageSize.resize img.data, width: 200
+      else
+        thumbnail = ImageSize.resize img.data, height: 300
+      end
+      img.data = thumbnail
+      img.size = thumbnail.size
+      unless img.mime == "image/webp"
+        # image_size.cr resizes non-webp images to jpg
+        img.mime = "image/jpeg"
+      end
+      Storage.default.save_thumbnail @id, img
+    rescue e
+      Logger.warn "Failed to generate thumbnail for file #{@zip_path}. #{e}"
+    end
+
+    img
+  end
+
+  def get_thumbnail : Image?
+    Storage.default.get_thumbnail @id
+  end
 end

src/library/library.cr

@@ -1,27 +1,77 @@
 class Library
-  property dir : String, title_ids : Array(String), scan_interval : Int32,
+  include YAML::Serializable
+
+  getter dir : String, title_ids : Array(String),
     title_hash : Hash(String, Title)
 
   use_default
 
-  def initialize
-    register_mime_types
+  def save_instance
+    path = Config.current.library_cache_path
+    Logger.debug "Caching library to #{path}"
 
+    writer = Compress::Gzip::Writer.new path,
+      Compress::Gzip::BEST_COMPRESSION
+    writer.write self.to_yaml.to_slice
+    writer.close
+  end
+
+  def self.load_instance
+    path = Config.current.library_cache_path
+    return unless File.exists? path
+
+    Logger.debug "Loading cached library from #{path}"
+
+    begin
+      Compress::Gzip::Reader.open path do |content|
+        @@default = Library.from_yaml content
+      end
+      Library.default.register_jobs
+    rescue e
+      Logger.error e
+    end
+  end
+
+  def initialize
     @dir = Config.current.library_path
-    @scan_interval = Config.current.scan_interval
     # explicitly initialize @titles to bypass the compiler check. it will
     #   be filled with actual Titles in the `scan` call below
     @title_ids = [] of String
     @title_hash = {} of String => Title
 
-    return scan if @scan_interval < 1
-    spawn do
-      loop do
-        start = Time.local
-        scan
-        ms = (Time.local - start).total_milliseconds
-        Logger.info "Scanned #{@title_ids.size} titles in #{ms}ms"
-        sleep @scan_interval * 60
+    @entries_count = 0
+    @thumbnails_count = 0
+
+    register_jobs
+  end
+
+  protected def register_jobs
+    register_mime_types
+
+    scan_interval = Config.current.scan_interval_minutes
+    if scan_interval < 1
+      scan
+    else
+      spawn do
+        loop do
+          start = Time.local
+          scan
+          ms = (Time.local - start).total_milliseconds
+          Logger.debug "Library initialized in #{ms}ms"
+          sleep scan_interval.minutes
+        end
+      end
+    end
+
+    thumbnail_interval = Config.current.thumbnail_generation_interval_hours
+    unless thumbnail_interval < 1
+      spawn do
+        loop do
+          # Wait for scan to complete (in most cases)
+          sleep 1.minutes
+          generate_thumbnails
+          sleep thumbnail_interval.hours
+        end
       end
     end
   end
@@ -33,47 +83,31 @@ class Library
   def sorted_titles(username, opt : SortOptions? = nil)
     if opt.nil?
       opt = SortOptions.from_info_json @dir, username
-    else
-      TitleInfo.new @dir do |info|
-        info.sort_by[username] = opt.to_tuple
-        info.save
-      end
     end
 
-    # This is a hack to bypass a compiler bug
-    ary = titles
-
-    case opt.not_nil!.method
-    when .time_modified?
-      ary.sort! { |a, b| (a.mtime <=> b.mtime).or \
-        compare_numerically a.title, b.title }
-    when .progress?
-      ary.sort! do |a, b|
-        (a.load_percentage(username) <=> b.load_percentage(username)).or \
-          compare_numerically a.title, b.title
-      end
-    else
-      unless opt.method.auto?
-        Logger.warn "Unknown sorting method #{opt.not_nil!.method}. Using " \
-                    "Auto instead"
-      end
-      ary.sort! { |a, b| compare_numerically a.title, b.title }
-    end
-
-    ary.reverse! unless opt.not_nil!.ascend
-
-    ary
+    # Helper function from src/util/util.cr
+    sort_titles titles, opt.not_nil!, username
   end
 
   def deep_titles
-    titles + titles.map { |t| t.deep_titles }.flatten
+    titles + titles.flat_map &.deep_titles
   end
 
-  def to_json(json : JSON::Builder)
-    json.object do
-      json.field "dir", @dir
-      json.field "titles" do
-        json.raw self.titles.to_json
+  def deep_entries
+    titles.flat_map &.deep_entries
+  end
+
+  def build_json(*, slim = false, depth = -1)
+    JSON.build do |json|
+      json.object do
+        json.field "dir", @dir
+        json.field "titles" do
+          json.array do
+            self.titles.each do |title|
+              json.raw title.build_json(slim: slim, depth: depth)
+            end
+          end
+        end
       end
     end
   end
@@ -87,22 +121,45 @@ class Library
   end
 
   def scan
+    start = Time.local
     unless Dir.exists? @dir
       Logger.info "The library directory #{@dir} does not exist. " \
                   "Attempting to create it"
       Dir.mkdir_p @dir
     end
-    @title_ids.clear
 
     storage = Storage.new auto_close: false
 
+    examine_context : ExamineContext = {
+      cached_contents_signature: {} of String => String,
+      deleted_title_ids:         [] of String,
+      deleted_entry_ids:         [] of String,
+    }
+
+    @title_ids.select! do |title_id|
+      title = @title_hash[title_id]
+      existence = title.examine examine_context
+      unless existence
+        examine_context["deleted_title_ids"].concat [title_id] +
+                                                    title.deep_titles.map &.id
+        examine_context["deleted_entry_ids"].concat title.deep_entries.map &.id
+      end
+      existence
+    end
+    remained_title_dirs = @title_ids.map { |id| title_hash[id].dir }
+    examine_context["deleted_title_ids"].each do |title_id|
+      @title_hash.delete title_id
+    end
+
+    cache = examine_context["cached_contents_signature"]
     (Dir.entries @dir)
       .select { |fn| !fn.starts_with? "." }
       .map { |fn| File.join @dir, fn }
+      .select { |path| !(remained_title_dirs.includes? path) }
       .select { |path| File.directory? path }
-      .map { |path| Title.new path, "", storage, self }
+      .map { |path| Title.new path, "", cache }
       .select { |title| !(title.entries.empty? && title.titles.empty?) }
-      .sort { |a, b| a.title <=> b.title }
+      .sort! { |a, b| a.title <=> b.title }
       .each do |title|
         @title_hash[title.id] = title
         @title_ids << title.id
@@ -111,19 +168,27 @@ class Library
     storage.bulk_insert_ids
     storage.close
 
-    Logger.debug "Scan completed"
+    ms = (Time.local - start).total_milliseconds
+    Logger.info "Scanned #{@title_ids.size} titles in #{ms}ms"
+
+    Storage.default.mark_unavailable examine_context["deleted_entry_ids"],
+      examine_context["deleted_title_ids"]
+
+    spawn do
+      save_instance
+    end
   end
 
   def get_continue_reading_entries(username)
     cr_entries = deep_titles
-      .map { |t| t.get_last_read_entry username }
+      .map(&.get_last_read_entry username)
       # Select elements with type `Entry` from the array and ignore all `Nil`s
       .select(Entry)[0...ENTRIES_IN_HOME_SECTIONS]
       .map { |e|
         # Get the last read time of the entry. If it hasn't been started, get
         #   the last read time of the previous entry
         last_read = e.load_last_read username
-        pe = e.previous_entry
+        pe = e.previous_entry username
         if last_read.nil? && pe
           last_read = pe.load_last_read username
         end
@@ -152,14 +217,14 @@ class Library
     recently_added = [] of RA
     last_date_added = nil
 
-    titles.map { |t| t.deep_entries_with_date_added }.flatten
-      .select { |e| e[:date_added] > 1.month.ago }
-      .sort { |a, b| b[:date_added] <=> a[:date_added] }
+    titles.flat_map(&.deep_entries_with_date_added)
+      .select(&.[:date_added].> 1.month.ago)
+      .sort! { |a, b| b[:date_added] <=> a[:date_added] }
       .each do |e|
         break if recently_added.size > 12
         last = recently_added.last?
         if last && e[:entry].book.id == last[:entry].book.id &&
-           (e[:date_added] - last_date_added.not_nil!).duration < 1.day
+           (e[:date_added] - last_date_added.not_nil!).abs < 1.day
           # A NamedTuple is immutable, so we have to cast it to a Hash first
           last_hash = last.to_h
           count = last_hash[:grouped_count].as(Int32)
@@ -190,8 +255,54 @@ class Library
     # If we use `deep_titles`, the start reading section might include `Vol. 2`
     #   when the user hasn't started `Vol. 1` yet
     titles
-      .select { |t| t.load_percentage(username) == 0 }
+      .select(&.load_percentage(username).== 0)
       .sample(ENTRIES_IN_HOME_SECTIONS)
-      .shuffle
+      .shuffle!
+  end
+
+  def thumbnail_generation_progress
+    return 0 if @entries_count == 0
+    @thumbnails_count / @entries_count
+  end
+
+  def generate_thumbnails
+    if @thumbnails_count > 0
+      Logger.debug "Thumbnail generation in progress"
+      return
+    end
+
+    Logger.info "Starting thumbnail generation"
+    entries = deep_titles.flat_map(&.deep_entries).reject &.err_msg
+    @entries_count = entries.size
+    @thumbnails_count = 0
+
+    # Report generation progress regularly
+    spawn do
+      loop do
+        unless @thumbnails_count == 0
+          Logger.debug "Thumbnail generation progress: " \
+                       "#{(thumbnail_generation_progress * 100).round 1}%"
+        end
+        # Generation is completed. We reset the count to 0 to allow subsequent
+        #   calls to the function, and break from the loop to stop the progress
+        #   report fiber
+        if thumbnail_generation_progress.to_i == 1
+          @thumbnails_count = 0
+          break
+        end
+        sleep 10.seconds
+      end
+    end
+
+    entries.each do |e|
+      unless e.get_thumbnail
+        e.generate_thumbnail
+        # Sleep after each generation to minimize the impact on disk IO
+        #   and CPU
+        sleep 1.seconds
+      end
+      @thumbnails_count += 1
+    end
+    Logger.info "Thumbnail generation finished"
   end
 end

src/library/title.cr

@@ -1,22 +1,38 @@
+require "digest"
 require "../archive"
 
 class Title
-  property dir : String, parent_id : String, title_ids : Array(String),
-    entries : Array(Entry), title : String, id : String,
-    encoded_title : String, mtime : Time
+  include YAML::Serializable
 
-  def initialize(@dir : String, @parent_id, storage,
-                 @library : Library)
-    id = storage.get_id @dir, true
+  getter dir : String, parent_id : String, title_ids : Array(String),
+    entries : Array(Entry), title : String, id : String,
+    encoded_title : String, mtime : Time, signature : UInt64,
+    entry_cover_url_cache : Hash(String, String)?
+  setter entry_cover_url_cache : Hash(String, String)?
+
+  @[YAML::Field(ignore: true)]
+  @entry_display_name_cache : Hash(String, String)?
+  @[YAML::Field(ignore: true)]
+  @entry_cover_url_cache : Hash(String, String)?
+  @[YAML::Field(ignore: true)]
+  @cached_display_name : String?
+  @[YAML::Field(ignore: true)]
+  @cached_cover_url : String?
+
+  def initialize(@dir : String, @parent_id, cache = {} of String => String)
+    storage = Storage.default
+    @signature = Dir.signature dir
+    id = storage.get_title_id dir, signature
     if id.nil?
       id = random_str
-      storage.insert_id({
-        path:     @dir,
-        id:       id,
-        is_title: true,
+      storage.insert_title_id({
+        path:      dir,
+        id:        id,
+        signature: signature.to_s,
       })
     end
     @id = id
+    @contents_signature = Dir.contents_signature dir, cache
     @title = File.basename dir
     @encoded_title = URI.encode @title
     @title_ids = [] of String
@@ -27,53 +43,178 @@ class Title
       next if fn.starts_with? "."
       path = File.join dir, fn
       if File.directory? path
-        title = Title.new path, @id, storage, library
+        title = Title.new path, @id, cache
         next if title.entries.size == 0 && title.titles.size == 0
-        @library.title_hash[title.id] = title
+        Library.default.title_hash[title.id] = title
         @title_ids << title.id
         next
       end
-      if [".zip", ".cbz", ".rar", ".cbr"].includes? File.extname path
-        entry = Entry.new path, self, storage
+      if is_supported_file path
+        entry = Entry.new path, self
         @entries << entry if entry.pages > 0 || entry.err_msg
       end
     end
 
     mtimes = [@mtime]
-    mtimes += @title_ids.map { |e| @library.title_hash[e].mtime }
-    mtimes += @entries.map { |e| e.mtime }
+    mtimes += @title_ids.map { |e| Library.default.title_hash[e].mtime }
+    mtimes += @entries.map &.mtime
     @mtime = mtimes.max
 
     @title_ids.sort! do |a, b|
-      compare_numerically @library.title_hash[a].title,
-        @library.title_hash[b].title
+      compare_numerically Library.default.title_hash[a].title,
+        Library.default.title_hash[b].title
     end
-    sorter = ChapterSorter.new @entries.map { |e| e.title }
+    sorter = ChapterSorter.new @entries.map &.title
     @entries.sort! do |a, b|
       sorter.compare a.title, b.title
     end
   end
 
-  def to_json(json : JSON::Builder)
-    json.object do
-      {% for str in ["dir", "title", "id", "encoded_title"] %}
+  # Utility method used in library rescanning.
+  # - When the title does not exist on the file system anymore, return false
+  #     and let it be deleted from the library instance
+  # - When the title exists, but its contents signature is now different from
+  #     the cache, it means some of its content (nested titles or entries)
+  #     has been added, deleted, or renamed. In this case we update its
+  #     contents signature and instance variables
+  # - When the title exists and its contents signature is still the same, we
+  #     return true so it can be reused without rescanning
+  def examine(context : ExamineContext) : Bool
+    return false unless Dir.exists? @dir
+    contents_signature = Dir.contents_signature @dir,
+      context["cached_contents_signature"]
+    return true if @contents_signature == contents_signature
+
+    @contents_signature = contents_signature
+    @signature = Dir.signature @dir
+    storage = Storage.default
+    id = storage.get_title_id dir, signature
+    if id.nil?
+      id = random_str
+      storage.insert_title_id({
+        path:      dir,
+        id:        id,
+        signature: signature.to_s,
+      })
+    end
+    @id = id
+    @mtime = File.info(@dir).modification_time
+
+    previous_titles_size = @title_ids.size
+    @title_ids.select! do |title_id|
+      title = Library.default.get_title! title_id
+      existence = title.examine context
+      unless existence
+        context["deleted_title_ids"].concat [title_id] +
+                                            title.deep_titles.map &.id
+        context["deleted_entry_ids"].concat title.deep_entries.map &.id
+      end
+      existence
+    end
+    remained_title_dirs = @title_ids.map do |title_id|
+      title = Library.default.get_title! title_id
+      title.dir
+    end
+
+    previous_entries_size = @entries.size
+    @entries.select! do |entry|
+      existence = File.exists? entry.zip_path
+      Fiber.yield
+      context["deleted_entry_ids"] << entry.id unless existence
+      existence
+    end
+    remained_entry_zip_paths = @entries.map &.zip_path
+
+    is_titles_added = false
+    is_entries_added = false
+    Dir.entries(dir).each do |fn|
+      next if fn.starts_with? "."
+      path = File.join dir, fn
+      if File.directory? path
+        next if remained_title_dirs.includes? path
+        title = Title.new path, @id, context["cached_contents_signature"]
+        next if title.entries.size == 0 && title.titles.size == 0
+        Library.default.title_hash[title.id] = title
+        @title_ids << title.id
+        is_titles_added = true
+        next
+      end
+      if is_supported_file path
+        next if remained_entry_zip_paths.includes? path
+        entry = Entry.new path, self
+        if entry.pages > 0 || entry.err_msg
+          @entries << entry
+          is_entries_added = true
+        end
+      end
+    end
+
+    mtimes = [@mtime]
+    mtimes += @title_ids.map { |e| Library.default.title_hash[e].mtime }
+    mtimes += @entries.map &.mtime
+    @mtime = mtimes.max
+
+    if is_titles_added || previous_titles_size != @title_ids.size
+      @title_ids.sort! do |a, b|
+        compare_numerically Library.default.title_hash[a].title,
+          Library.default.title_hash[b].title
+      end
+    end
+    if is_entries_added || previous_entries_size != @entries.size
+      sorter = ChapterSorter.new @entries.map &.title
+      @entries.sort! do |a, b|
+        sorter.compare a.title, b.title
+      end
+    end
+
+    true
+  end
+
+  alias SortContext = NamedTuple(username: String, opt: SortOptions)
+
+  def build_json(*, slim = false, depth = -1,
+                 sort_context : SortContext? = nil)
+    JSON.build do |json|
+      json.object do
+        {% for str in ["dir", "title", "id"] %}
         json.field {{str}}, @{{str.id}}
       {% end %}
-      json.field "display_name", display_name
-      json.field "cover_url", cover_url
-      json.field "mtime" { json.number @mtime.to_unix }
-      json.field "titles" do
-        json.raw self.titles.to_json
-      end
-      json.field "entries" do
-        json.raw @entries.to_json
-      end
-      json.field "parents" do
-        json.array do
-          self.parents.each do |title|
-            json.object do
-              json.field "title", title.title
-              json.field "id", title.id
+        json.field "signature" { json.number @signature }
+        unless slim
+          json.field "display_name", display_name
+          json.field "cover_url", cover_url
+          json.field "mtime" { json.number @mtime.to_unix }
+        end
+        unless depth == 0
+          json.field "titles" do
+            json.array do
+              self.titles.each do |title|
+                json.raw title.build_json(slim: slim,
+                  depth: depth > 0 ? depth - 1 : depth)
+              end
+            end
+          end
+          json.field "entries" do
+            json.array do
+              _entries = if sort_context
+                           sorted_entries sort_context[:username],
+                             sort_context[:opt]
+                         else
+                           @entries
+                         end
+              _entries.each do |entry|
+                json.raw entry.build_json(slim: slim)
+              end
+            end
+          end
+        end
+        json.field "parents" do
+          json.array do
+            self.parents.each do |title|
+              json.object do
+                json.field "title", title.title
+                json.field "id", title.id
+              end
             end
           end
         end
@@ -82,45 +223,71 @@ class Title
   end
 
   def titles
-    @title_ids.map { |tid| @library.get_title! tid }
+    @title_ids.map { |tid| Library.default.get_title! tid }
   end
 
   # Get all entries, including entries in nested titles
   def deep_entries
     return @entries if title_ids.empty?
-    @entries + titles.map { |t| t.deep_entries }.flatten
+    @entries + titles.flat_map &.deep_entries
   end
 
   def deep_titles
     return [] of Title if titles.empty?
-    titles + titles.map { |t| t.deep_titles }.flatten
+    titles + titles.flat_map &.deep_titles
   end
 
   def parents
     ary = [] of Title
     tid = @parent_id
     while !tid.empty?
-      title = @library.get_title! tid
+      title = Library.default.get_title! tid
       ary << title
       tid = title.parent_id
     end
     ary.reverse
   end
 
-  def size
-    @entries.size + @title_ids.size
+  # Returns a string the describes the content of the title
+  #   e.g., - 3 titles and 1 entry
+  #         - 4 entries
+  #         - 1 title
+  def content_label
+    ary = [] of String
+    tsize = titles.size
+    esize = entries.size
+
+    ary << "#{tsize} #{tsize > 1 ? "titles" : "title"}" if tsize > 0
+    ary << "#{esize} #{esize > 1 ? "entries" : "entry"}" if esize > 0
+    ary.join " and "
+  end
+
+  def tags
+    Storage.default.get_title_tags @id
+  end
+
+  def add_tag(tag)
+    Storage.default.add_tag @id, tag
+  end
+
+  def delete_tag(tag)
+    Storage.default.delete_tag @id, tag
   end
 
   def get_entry(eid)
-    @entries.find { |e| e.id == eid }
+    @entries.find &.id.== eid
   end
 
   def display_name
+    cached_display_name = @cached_display_name
+    return cached_display_name unless cached_display_name.nil?
+
     dn = @title
     TitleInfo.new @dir do |info|
       info_dn = info.display_name
       dn = info_dn unless info_dn.empty?
     end
+    @cached_display_name = dn
     dn
   end
 
@@ -129,17 +296,22 @@ class Title
   end
 
   def display_name(entry_name)
-    dn = entry_name
-    TitleInfo.new @dir do |info|
-      info_dn = info.entry_display_name[entry_name]?
-      unless info_dn.nil? || info_dn.empty?
-        dn = info_dn
+    unless @entry_display_name_cache
+      TitleInfo.new @dir do |info|
+        @entry_display_name_cache = info.entry_display_name
       end
     end
+
+    dn = entry_name
+    info_dn = @entry_display_name_cache.not_nil![entry_name]?
+    unless info_dn.nil? || info_dn.empty?
+      dn = info_dn
+    end
     dn
   end
 
   def set_display_name(dn)
+    @cached_display_name = dn
     TitleInfo.new @dir do |info|
       info.display_name = dn
       info.save
@@ -149,11 +321,15 @@ class Title
   def set_display_name(entry_name : String, dn)
     TitleInfo.new @dir do |info|
       info.entry_display_name[entry_name] = dn
+      @entry_display_name_cache = info.entry_display_name
       info.save
     end
   end
 
   def cover_url
+    cached_cover_url = @cached_cover_url
+    return cached_cover_url unless cached_cover_url.nil?
+
     url = "#{Config.current.base_url}img/icon.png"
     readable_entries = @entries.select &.err_msg.nil?
     if readable_entries.size > 0
@@ -165,10 +341,12 @@ class Title
         url = File.join Config.current.base_url, info_url
       end
     end
+    @cached_cover_url = url
     url
   end
 
   def set_cover_url(url : String)
+    @cached_cover_url = url
     TitleInfo.new @dir do |info|
       info.cover_url = url
       info.save
@@ -178,6 +356,7 @@ class Title
   def set_cover_url(entry_name : String, url : String)
     TitleInfo.new @dir do |info|
       info.entry_cover_url[entry_name] = url
+      @entry_cover_url_cache = info.entry_cover_url
       info.save
     end
   end
@@ -187,29 +366,30 @@ class Title
     @entries.each do |e|
       e.save_progress username, e.pages
     end
-    titles.each do |t|
-      t.read_all username
-    end
+    titles.each &.read_all username
   end
 
   # Set the reading progress of all entries and nested libraries to 0%
   def unread_all(username)
-    @entries.each do |e|
-      e.save_progress username, 0
-    end
-    titles.each do |t|
-      t.unread_all username
-    end
+    @entries.each &.save_progress(username, 0)
+    titles.each &.unread_all username
   end
 
   def deep_read_page_count(username) : Int32
-    load_progress_for_all_entries(username).sum +
-      titles.map { |t| t.deep_read_page_count username }.flatten.sum
+    key = "#{@id}:#{username}:progress_sum"
+    sig = Digest::SHA1.hexdigest (entries.map &.id).to_s
+    cached_sum = LRUCache.get key
+    return cached_sum[1] if cached_sum.is_a? Tuple(String, Int32) &&
+                            cached_sum[0] == sig
+    sum = load_progress_for_all_entries(username, nil, true).sum +
+          titles.flat_map(&.deep_read_page_count username).sum
+    LRUCache.set generate_cache_entry key, {sig, sum}
+    sum
   end
 
   def deep_total_page_count : Int32
-    entries.map { |e| e.pages }.sum +
-      titles.map { |t| t.deep_total_page_count }.flatten.sum
+    entries.sum(&.pages) +
+      titles.flat_map(&.deep_total_page_count).sum
   end
 
   def load_percentage(username)
@@ -258,13 +438,12 @@ class Title
   #   use the default (auto, ascending)
   # When `opt` is not nil, it saves the options to info.json
   def sorted_entries(username, opt : SortOptions? = nil)
+    cache_key = SortedEntriesCacheEntry.gen_key @id, username, @entries, opt
+    cached_entries = LRUCache.get cache_key
+    return cached_entries if cached_entries.is_a? Array(Entry)
+
     if opt.nil?
       opt = SortOptions.from_info_json @dir, username
-    else
-      TitleInfo.new @dir do |info|
-        info.sort_by[username] = opt.to_tuple
-        info.save
-      end
     end
 
     case opt.not_nil!.method
@@ -281,13 +460,13 @@ class Title
       ary = @entries.zip(percentage_ary)
         .sort { |a_tp, b_tp| (a_tp[1] <=> b_tp[1]).or \
           compare_numerically a_tp[0].title, b_tp[0].title }
-        .map { |tp| tp[0] }
+        .map &.[0]
     else
       unless opt.method.auto?
         Logger.warn "Unknown sorting method #{opt.not_nil!.method}. Using " \
                     "Auto instead"
       end
-      sorter = ChapterSorter.new @entries.map { |e| e.title }
+      sorter = ChapterSorter.new @entries.map &.title
       ary = @entries.sort do |a, b|
         sorter.compare(a.title, b.title).or \
           compare_numerically a.title, b.title
@@ -296,6 +475,7 @@ class Title
 
     ary.reverse! unless opt.not_nil!.ascend
 
+    LRUCache.set generate_cache_entry cache_key, ary
     ary
   end
 
@@ -353,13 +533,24 @@ class Title
       {entry: e, date_added: da_ary[i]}
     end
     return zip if title_ids.empty?
-    zip + titles.map { |t| t.deep_entries_with_date_added }.flatten
+    zip + titles.flat_map &.deep_entries_with_date_added
   end
 
   def bulk_progress(action, ids : Array(String), username)
+    LRUCache.invalidate "#{@id}:#{username}:progress_sum"
+    parents.each do |parent|
+      LRUCache.invalidate "#{parent.id}:#{username}:progress_sum"
+    end
+    [false, true].each do |ascend|
+      sorted_entries_cache_key =
+        SortedEntriesCacheEntry.gen_key @id, username, @entries,
+          SortOptions.new(SortMethod::Progress, ascend)
+      LRUCache.invalidate sorted_entries_cache_key
+    end
+
     selected_entries = ids
       .map { |id|
-        @entries.find { |e| e.id == id }
+        @entries.find &.id.==(id)
       }
       .select(Entry)
 

src/library/types.cr

@@ -1,4 +1,12 @@
-SUPPORTED_IMG_TYPES = ["image/jpeg", "image/png", "image/webp"]
+SUPPORTED_IMG_TYPES = %w(
+  image/jpeg
+  image/png
+  image/webp
+  image/apng
+  image/avif
+  image/gif
+  image/svg+xml
+)
 
 enum SortMethod
   Auto
@@ -57,6 +65,16 @@ struct Image
 
   def initialize(@data, @mime, @filename, @size)
   end
+
+  def self.from_db(res : DB::ResultSet)
+    img = Image.allocate
+    res.read String
+    img.data = res.read Bytes
+    img.filename = res.read String
+    img.mime = res.read String
+    img.size = res.read Int32
+    img
+  end
 end
 
 class TitleInfo
@@ -78,6 +96,18 @@ class TitleInfo
   @@mutex_hash = {} of String => Mutex
 
   def self.new(dir, &)
+    key = "#{dir}:info.json"
+    info = LRUCache.get key
+    if info.is_a? String
+      begin
+        instance = TitleInfo.from_json info
+        instance.dir = dir
+        yield instance
+        return
+      rescue
+      end
+    end
+
     if @@mutex_hash[dir]?
       mutex = @@mutex_hash[dir]
     else
@@ -91,6 +121,7 @@ class TitleInfo
         instance = TitleInfo.from_json File.read json_path
       end
       instance.dir = dir
+      LRUCache.set generate_cache_entry key, instance.to_json
       yield instance
     end
   end
@@ -98,5 +129,12 @@ class TitleInfo
   def save
     json_path = File.join @dir, "info.json"
     File.write json_path, self.to_pretty_json
+    key = "#{@dir}:info.json"
+    LRUCache.set generate_cache_entry key, self.to_json
   end
 end
+
+alias ExamineContext = NamedTuple(
+  cached_contents_signature: Hash(String, String),
+  deleted_title_ids: Array(String),
+  deleted_entry_ids: Array(String))

src/logger.cr

@@ -6,29 +6,17 @@ class Logger
   SEVERITY_IDS = [0, 4, 5, 2, 3]
   COLORS       = [:light_cyan, :light_red, :red, :light_yellow, :light_magenta]
 
+  getter raw_log = Log.for ""
+
   @@severity : Log::Severity = :info
 
   use_default
 
   def initialize
-    level = Config.current.log_level
-    {% begin %}
-      case level.downcase
-      when "off"
-        @@severity = :none
-        {% for lvl, i in LEVELS %}
-        when {{lvl}}
-          @@severity = Log::Severity.new SEVERITY_IDS[{{i}}]
-        {% end %}
-      else
-        raise "Unknown log level #{level}"
-      end
-    {% end %}
-
-    @log = Log.for("")
-
+    @@severity = Logger.get_severity
     @backend = Log::IOBackend.new
-    @backend.formatter = ->(entry : Log::Entry, io : IO) do
+
+    format_proc = ->(entry : Log::Entry, io : IO) do
       color = :default
       {% begin %}
         case entry.severity.label.to_s().downcase
@@ -45,12 +33,36 @@ class Logger
       io << entry.message
     end
 
-    Log.builder.bind "*", @@severity, @backend
+    @backend.formatter = Log::Formatter.new &format_proc
+
+    Log.setup do |c|
+      c.bind "*", @@severity, @backend
+      c.bind "db.*", :error, @backend
+    end
+  end
+
+  def self.get_severity(level = "") : Log::Severity
+    if level.empty?
+      level = Config.current.log_level
+    end
+    {% begin %}
+      case level.downcase
+      when "off"
+        return Log::Severity::None
+        {% for lvl, i in LEVELS %}
+          when {{lvl}}
+          return Log::Severity.new SEVERITY_IDS[{{i}}]
+        {% end %}
+      else
+        raise "Unknown log level #{level}"
+      end
+    {% end %}
   end
 
   # Ignores @@severity and always log msg
   def log(msg)
-    @backend.write Log::Entry.new "", Log::Severity::None, msg, nil
+    @backend.write Log::Entry.new "", Log::Severity::None, msg,
+      Log::Metadata.empty, nil
   end
 
   def self.log(msg)
@@ -59,7 +71,7 @@ class Logger
 
   {% for lvl in LEVELS %}
     def {{lvl.id}}(msg)
-      @log.{{lvl.id}} { msg }
+      raw_log.{{lvl.id}} { msg }
     end
     def self.{{lvl.id}}(msg)
       default.not_nil!.{{lvl.id}} msg

src/main_fiber.cr

@@ -0,0 +1,34 @@
+# On ARM, connecting to the SQLite DB from a spawned fiber would crash
+#   https://github.com/crystal-lang/crystal-sqlite3/issues/30
+# This is a temporary workaround that forces the relevant code to run in the
+#   main fiber
+
+class MainFiber
+  @@channel = Channel(-> Nil).new
+  @@done = Channel(Bool).new
+  @@main_fiber = Fiber.current
+
+  def self.start_and_block
+    loop do
+      if proc = @@channel.receive
+        begin
+          proc.call
+        ensure
+          @@done.send true
+        end
+      end
+      Fiber.yield
+    end
+  end
+
+  def self.run(&block : -> Nil)
+    if @@main_fiber == Fiber.current
+      block.call
+    else
+      @@channel.send block
+      until @@done.receive
+        Fiber.yield
+      end
+    end
+  end
+end

src/mangadex/api.cr

@@ -1,218 +0,0 @@
-require "http/client"
-require "json"
-require "csv"
-require "../rename"
-
-macro string_properties(names)
-  {% for name in names %}
-    property {{name.id}} = ""
-  {% end %}
-end
-
-macro parse_strings_from_json(names)
-  {% for name in names %}
-    @{{name.id}} = obj[{{name}}].as_s
-  {% end %}
-end
-
-macro properties_to_hash(names)
-  {
-    {% for name in names %}
-      "{{name.id}}" => @{{name.id}}.to_s,
-    {% end %}
-  }
-end
-
-module MangaDex
-  class Chapter
-    string_properties ["lang_code", "title", "volume", "chapter"]
-    property manga : Manga
-    property time = Time.local
-    property id : String
-    property full_title = ""
-    property language = ""
-    property pages = [] of {String, String} # filename, url
-    property groups = [] of {Int32, String} # group_id, group_name
-
-    def initialize(@id, json_obj : JSON::Any, @manga,
-                   lang : Hash(String, String))
-      self.parse_json json_obj, lang
-    end
-
-    def to_info_json
-      JSON.build do |json|
-        json.object do
-          {% for name in ["id", "title", "volume", "chapter",
-                          "language", "full_title"] %}
-          json.field {{name}}, @{{name.id}}
-        {% end %}
-          json.field "time", @time.to_unix.to_s
-          json.field "manga_title", @manga.title
-          json.field "manga_id", @manga.id
-          json.field "groups" do
-            json.object do
-              @groups.each do |gid, gname|
-                json.field gname, gid
-              end
-            end
-          end
-        end
-      end
-    end
-
-    def parse_json(obj, lang)
-      parse_strings_from_json ["lang_code", "title", "volume",
-                               "chapter"]
-      language = lang[@lang_code]?
-      @language = language if language
-      @time = Time.unix obj["timestamp"].as_i
-      suffixes = ["", "_2", "_3"]
-      suffixes.each do |s|
-        gid = obj["group_id#{s}"].as_i
-        next if gid == 0
-        gname = obj["group_name#{s}"].as_s
-        @groups << {gid, gname}
-      end
-
-      rename_rule = Rename::Rule.new \
-        Config.current.mangadex["chapter_rename_rule"].to_s
-      @full_title = rename rename_rule
-    rescue e
-      raise "failed to parse json: #{e}"
-    end
-
-    def rename(rule : Rename::Rule)
-      hash = properties_to_hash ["id", "title", "volume", "chapter",
-                                 "lang_code", "language", "pages"]
-      hash["groups"] = @groups.map { |g| g[1] }.join ","
-      rule.render hash
-    end
-  end
-
-  class Manga
-    string_properties ["cover_url", "description", "title", "author", "artist"]
-    property chapters = [] of Chapter
-    property id : String
-
-    def initialize(@id, json_obj : JSON::Any)
-      self.parse_json json_obj
-    end
-
-    def to_info_json(with_chapters = true)
-      JSON.build do |json|
-        json.object do
-          {% for name in ["id", "title", "description", "author", "artist",
-                          "cover_url"] %}
-            json.field {{name}}, @{{name.id}}
-          {% end %}
-          if with_chapters
-            json.field "chapters" do
-              json.array do
-                @chapters.each do |c|
-                  json.raw c.to_info_json
-                end
-              end
-            end
-          end
-        end
-      end
-    end
-
-    def parse_json(obj)
-      parse_strings_from_json ["cover_url", "description", "title", "author",
-                               "artist"]
-    rescue e
-      raise "failed to parse json: #{e}"
-    end
-
-    def rename(rule : Rename::Rule)
-      rule.render properties_to_hash ["id", "title", "author", "artist"]
-    end
-  end
-
-  class API
-    use_default
-
-    def initialize
-      @base_url = Config.current.mangadex["api_url"].to_s ||
-                  "https://mangadex.org/api/"
-      @lang = {} of String => String
-      CSV.each_row {{read_file "src/assets/lang_codes.csv"}} do |row|
-        @lang[row[1]] = row[0]
-      end
-    end
-
-    def get(url)
-      headers = HTTP::Headers{
-        "User-agent" => "Mangadex.cr",
-      }
-      res = HTTP::Client.get url, headers
-      raise "Failed to get #{url}. [#{res.status_code}] " \
-            "#{res.status_message}" if !res.success?
-      JSON.parse res.body
-    end
-
-    def get_manga(id)
-      obj = self.get File.join @base_url, "manga/#{id}"
-      if obj["status"]? != "OK"
-        raise "Expecting `OK` in the `status` field. Got `#{obj["status"]?}`"
-      end
-      begin
-        manga = Manga.new id, obj["manga"]
-        obj["chapter"].as_h.map do |k, v|
-          chapter = Chapter.new k, v, manga, @lang
-          manga.chapters << chapter
-        end
-        manga
-      rescue
-        raise "Failed to parse JSON"
-      end
-    end
-
-    def get_chapter(chapter : Chapter)
-      obj = self.get File.join @base_url, "chapter/#{chapter.id}"
-      if obj["status"]? == "external"
-        raise "This chapter is hosted on an external site " \
-              "#{obj["external"]?}, and Mango does not support " \
-              "external chapters."
-      end
-      if obj["status"]? != "OK"
-        raise "Expecting `OK` in the `status` field. Got `#{obj["status"]?}`"
-      end
-      begin
-        server = obj["server"].as_s
-        hash = obj["hash"].as_s
-        chapter.pages = obj["page_array"].as_a.map do |fn|
-          {
-            fn.as_s,
-            "#{server}#{hash}/#{fn.as_s}",
-          }
-        end
-      rescue
-        raise "Failed to parse JSON"
-      end
-    end
-
-    def get_chapter(id : String)
-      obj = self.get File.join @base_url, "chapter/#{id}"
-      if obj["status"]? == "external"
-        raise "This chapter is hosted on an external site " \
-              "#{obj["external"]?}, and Mango does not support " \
-              "external chapters."
-      end
-      if obj["status"]? != "OK"
-        raise "Expecting `OK` in the `status` field. Got `#{obj["status"]?}`"
-      end
-      manga_id = ""
-      begin
-        manga_id = obj["manga_id"].as_i.to_s
-      rescue
-        raise "Failed to parse JSON"
-      end
-      manga = self.get_manga manga_id
-      chapter = manga.chapters.find { |c| c.id == id }.not_nil!
-      self.get_chapter chapter
-      chapter
-    end
-  end
-end

src/mangadex/downloader.cr

@@ -1,154 +0,0 @@
-require "./api"
-require "zip"
-
-module MangaDex
-  class PageJob
-    property success = false
-    property url : String
-    property filename : String
-    property writer : Zip::Writer
-    property tries_remaning : Int32
-
-    def initialize(@url, @filename, @writer, @tries_remaning)
-    end
-  end
-
-  class Downloader < Queue::Downloader
-    @wait_seconds : Int32 = Config.current.mangadex["download_wait_seconds"]
-      .to_i32
-    @retries : Int32 = Config.current.mangadex["download_retries"].to_i32
-
-    use_default
-
-    def initialize
-      @api = API.default
-      super
-    end
-
-    def pop : Queue::Job?
-      job = nil
-      DB.open "sqlite3://#{@queue.path}" do |db|
-        begin
-          db.query_one "select * from queue where id not like '%-%' " \
-                       "and (status = 0 or status = 1) " \
-                       "order by time limit 1" do |res|
-            job = Queue::Job.from_query_result res
-          end
-        rescue
-        end
-      end
-      job
-    end
-
-    private def download(job : Queue::Job)
-      @downloading = true
-      @queue.set_status Queue::JobStatus::Downloading, job
-      begin
-        chapter = @api.get_chapter(job.id)
-      rescue e
-        Logger.error e
-        @queue.set_status Queue::JobStatus::Error, job
-        unless e.message.nil?
-          @queue.add_message e.message.not_nil!, job
-        end
-        @downloading = false
-        return
-      end
-      @queue.set_pages chapter.pages.size, job
-      lib_dir = @library_path
-      rename_rule = Rename::Rule.new \
-        Config.current.mangadex["manga_rename_rule"].to_s
-      manga_dir = File.join lib_dir, chapter.manga.rename rename_rule
-      unless File.exists? manga_dir
-        Dir.mkdir_p manga_dir
-      end
-      zip_path = File.join manga_dir, "#{job.title}.cbz.part"
-
-      # Find the number of digits needed to store the number of pages
-      len = Math.log10(chapter.pages.size).to_i + 1
-
-      writer = Zip::Writer.new zip_path
-      # Create a buffered channel. It works as an FIFO queue
-      channel = Channel(PageJob).new chapter.pages.size
-      spawn do
-        chapter.pages.each_with_index do |tuple, i|
-          fn, url = tuple
-          ext = File.extname fn
-          fn = "#{i.to_s.rjust len, '0'}#{ext}"
-          page_job = PageJob.new url, fn, writer, @retries
-          Logger.debug "Downloading #{url}"
-          loop do
-            sleep @wait_seconds.seconds
-            download_page page_job
-            break if page_job.success ||
-                     page_job.tries_remaning <= 0
-            page_job.tries_remaning -= 1
-            Logger.warn "Failed to download page #{url}. " \
-                        "Retrying... Remaining retries: " \
-                        "#{page_job.tries_remaning}"
-          end
-
-          channel.send page_job
-        end
-      end
-
-      spawn do
-        page_jobs = [] of PageJob
-        chapter.pages.size.times do
-          page_job = channel.receive
-          Logger.debug "[#{page_job.success ? "success" : "failed"}] " \
-                       "#{page_job.url}"
-          page_jobs << page_job
-          if page_job.success
-            @queue.add_success job
-          else
-            @queue.add_fail job
-            msg = "Failed to download page #{page_job.url}"
-            @queue.add_message msg, job
-            Logger.error msg
-          end
-        end
-        fail_count = page_jobs.count { |j| !j.success }
-        Logger.debug "Download completed. " \
-                     "#{fail_count}/#{page_jobs.size} failed"
-        writer.close
-        filename = File.join File.dirname(zip_path), File.basename(zip_path,
-          ".part")
-        File.rename zip_path, filename
-        Logger.debug "cbz File created at #{filename}"
-
-        zip_exception = validate_archive filename
-        if !zip_exception.nil?
-          @queue.add_message "The downloaded archive is corrupted. " \
-                             "Error: #{zip_exception}", job
-          @queue.set_status Queue::JobStatus::Error, job
-        elsif fail_count > 0
-          @queue.set_status Queue::JobStatus::MissingPages, job
-        else
-          @queue.set_status Queue::JobStatus::Completed, job
-        end
-        @downloading = false
-      end
-    end
-
-    private def download_page(job : PageJob)
-      Logger.debug "downloading #{job.url}"
-      headers = HTTP::Headers{
-        "User-agent" => "Mangadex.cr",
-      }
-      begin
-        HTTP::Client.get job.url, headers do |res|
-          unless res.success?
-            raise "Failed to download page #{job.url}. " \
-                  "[#{res.status_code}] #{res.status_message}"
-          end
-          job.writer.add job.filename, res.body_io
-        end
-        job.success = true
-      rescue e
-        Logger.error e
-        job.success = false
-      end
-    end
-  end
-end

src/mango.cr

@@ -1,12 +1,29 @@
 require "./config"
 require "./queue"
 require "./server"
-require "./mangadex/*"
+require "./main_fiber"
+require "./plugin/*"
 require "option_parser"
 require "clim"
-require "./plugin/*"
+require "tallboy"
 
-MANGO_VERSION = "0.10.0"
+MANGO_VERSION = "0.24.0"
+
+# From http://www.network-science.de/ascii/
+BANNER = %{
+
+              _|      _|
+              _|_|  _|_|    _|_|_|  _|_|_|      _|_|_|    _|_|
+              _|  _|  _|  _|    _|  _|    _|  _|    _|  _|    _|
+              _|      _|  _|    _|  _|    _|  _|    _|  _|    _|
+              _|      _|    _|_|_|  _|    _|    _|_|_|    _|_|
+                                                    _|
+                                                _|_|
+
+
+}
+
+DESCRIPTION = "Mango - Manga Server and Web Reader. Version #{MANGO_VERSION}"
 
 macro common_option
   option "-c PATH", "--config=PATH", type: String,
@@ -22,20 +39,39 @@ end
 
 class CLI < Clim
   main do
-    desc "Mango - Manga Server and Web Reader. Version #{MANGO_VERSION}"
+    desc DESCRIPTION
     usage "mango [sub_command] [options]"
     help short: "-h"
     version "Version #{MANGO_VERSION}", short: "-v"
     common_option
     run do |opts|
-      Config.load(opts.config).set_current
-      MangaDex::Downloader.default
-      Plugin::Downloader.default
+      puts BANNER
+      puts DESCRIPTION
+      puts
 
       # empty ARGV so it won't be passed to Kemal
       ARGV.clear
-      server = Server.new
-      server.start
+
+      Config.load(opts.config).set_current
+
+      # Initialize main components
+      LRUCache.init
+      Storage.default
+      Queue.default
+      Library.load_instance
+      Library.default
+      Plugin::Downloader.default
+
+      spawn do
+        begin
+          Server.new.start
+        rescue e
+          Logger.fatal e
+          Process.exit 1
+        end
+      end
+
+      MainFiber.start_and_block
     end
 
     sub "admin" do
@@ -80,18 +116,13 @@ class CLI < Clim
               password.not_nil!, opts.admin
           when "list"
             users = storage.list_users
-            name_length = users.map(&.[0].size).max? || 0
-            l_cell_width = ["username".size, name_length].max
-            r_cell_width = "admin access".size
-            header = " #{"username".ljust l_cell_width} | admin access "
-            puts "-" * header.size
-            puts header
-            puts "-" * header.size
-            users.each do |name, admin|
-              puts " #{name.ljust l_cell_width} | " \
-                   "#{admin.to_s.ljust r_cell_width} "
+            table = Tallboy.table do
+              header ["username", "admin access"]
+              users.each do |name, admin|
+                row [name, admin]
+              end
             end
-            puts "-" * header.size
+            puts table
           when nil
             puts opts.help_string
           else

src/plugin/downloader.cr

@@ -8,24 +8,21 @@ class Plugin
 
     def pop : Queue::Job?
       job = nil
-      DB.open "sqlite3://#{@queue.path}" do |db|
-        begin
-          db.query_one "select * from queue where id like '%-%' " \
-                       "and (status = 0 or status = 1) " \
-                       "order by time limit 1" do |res|
-            job = Queue::Job.from_query_result res
+      MainFiber.run do
+        DB.open "sqlite3://#{@queue.path}" do |db|
+          begin
+            db.query_one "select * from queue where id like '%-%' " \
+                         "and (status = 0 or status = 1) " \
+                         "order by time limit 1" do |res|
+              job = Queue::Job.from_query_result res
+            end
+          rescue
           end
-        rescue
         end
       end
       job
     end
 
-    private def process_filename(str)
-      return "_" if str == ".."
-      str.gsub "/", "_"
-    end
-
     private def download(job : Queue::Job)
       @downloading = true
       @queue.set_status Queue::JobStatus::Downloading, job
@@ -40,8 +37,8 @@ class Plugin
 
         pages = info["pages"].as_i
 
-        manga_title = process_filename job.manga_title
-        chapter_title = process_filename info["title"].as_s
+        manga_title = sanitize_filename job.manga_title
+        chapter_title = sanitize_filename info["title"].as_s
 
         @queue.set_pages pages, job
         lib_dir = @library_path
@@ -51,7 +48,7 @@ class Plugin
         end
 
         zip_path = File.join manga_dir, "#{chapter_title}.cbz.part"
-        writer = Zip::Writer.new zip_path
+        writer = Compress::Zip::Writer.new zip_path
       rescue e
         @queue.set_status Queue::JobStatus::Error, job
         unless e.message.nil?
@@ -64,7 +61,9 @@ class Plugin
       fail_count = 0
 
       while page = plugin.next_page
-        fn = process_filename page["filename"].as_s
+        break unless @queue.exists? job
+
+        fn = sanitize_filename page["filename"].as_s
         url = page["url"].as_s
         headers = HTTP::Headers.new
 
@@ -107,6 +106,12 @@ class Plugin
         end
       end
 
+      unless @queue.exists? job
+        Logger.debug "Download cancelled"
+        @downloading = false
+        return
+      end
+
       Logger.debug "Download completed. #{fail_count}/#{pages} failed"
       writer.close
       filename = File.join File.dirname(zip_path), File.basename(zip_path,

src/plugin/plugin.cr

@@ -1,6 +1,5 @@
 require "duktape/runtime"
 require "myhtml"
-require "http"
 require "xml"
 
 class Plugin
@@ -118,7 +117,7 @@ class Plugin
   def initialize(id : String)
     Plugin.build_info_ary
 
-    @info = @@info_ary.find { |i| i.id == id }
+    @info = @@info_ary.find &.id.== id
     if @info.nil?
       raise Error.new "Plugin with ID #{id} not found"
     end
@@ -258,6 +257,48 @@ class Plugin
     end
     sbx.put_prop_string -2, "get"
 
+    sbx.push_proc LibDUK::VARARGS do |ptr|
+      env = Duktape::Sandbox.new ptr
+      url = env.require_string 0
+      body = env.require_string 1
+
+      headers = HTTP::Headers.new
+
+      if env.get_top == 3
+        env.enum 2, LibDUK::Enum::OwnPropertiesOnly
+        while env.next -1, true
+          key = env.require_string -2
+          val = env.require_string -1
+          headers.add key, val
+          env.pop_2
+        end
+      end
+
+      res = HTTP::Client.post url, headers, body
+
+      env.push_object
+
+      env.push_int res.status_code
+      env.put_prop_string -2, "status_code"
+
+      env.push_string res.body
+      env.put_prop_string -2, "body"
+
+      env.push_object
+      res.headers.each do |k, v|
+        if v.size == 1
+          env.push_string v[0]
+        else
+          env.push_string v.join ","
+        end
+        env.put_prop_string -2, k
+      end
+      env.put_prop_string -2, "headers"
+
+      env.call_success
+    end
+    sbx.put_prop_string -2, "post"
+
     sbx.push_proc 2 do |ptr|
       env = Duktape::Sandbox.new ptr
       html = env.require_string 0

src/queue.cr

@@ -119,22 +119,24 @@ class Queue
                   "Attepmting to create it"
       Dir.mkdir_p dir
     end
-    DB.open "sqlite3://#{@path}" do |db|
-      begin
-        db.exec "create table if not exists queue " \
-                "(id text, manga_id text, title text, manga_title " \
-                "text, status integer, status_message text, " \
-                "pages integer, success_count integer, " \
-                "fail_count integer, time integer)"
-        db.exec "create unique index if not exists id_idx " \
-                "on queue (id)"
-        db.exec "create index if not exists manga_id_idx " \
-                "on queue (manga_id)"
-        db.exec "create index if not exists status_idx " \
-                "on queue (status)"
-      rescue e
-        Logger.error "Error when checking tables in DB: #{e}"
-        raise e
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        begin
+          db.exec "create table if not exists queue " \
+                  "(id text, manga_id text, title text, manga_title " \
+                  "text, status integer, status_message text, " \
+                  "pages integer, success_count integer, " \
+                  "fail_count integer, time integer)"
+          db.exec "create unique index if not exists id_idx " \
+                  "on queue (id)"
+          db.exec "create index if not exists manga_id_idx " \
+                  "on queue (manga_id)"
+          db.exec "create index if not exists status_idx " \
+                  "on queue (status)"
+        rescue e
+          Logger.error "Error when checking tables in DB: #{e}"
+          raise e
+        end
       end
     end
   end
@@ -143,23 +145,27 @@ class Queue
   #   inserted. Any job already exists in the queue will be ignored.
   def push(jobs : Array(Job))
     start_count = self.count
-    DB.open "sqlite3://#{@path}" do |db|
-      jobs.each do |job|
-        db.exec "insert or ignore into queue values " \
-                "(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
-          job.id, job.manga_id, job.title, job.manga_title,
-          job.status.to_i, job.status_message, job.pages,
-          job.success_count, job.fail_count, job.time.to_unix_ms
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        jobs.each do |job|
+          db.exec "insert or ignore into queue values " \
+                  "(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
+            job.id, job.manga_id, job.title, job.manga_title,
+            job.status.to_i, job.status_message, job.pages,
+            job.success_count, job.fail_count, job.time.to_unix_ms
+        end
       end
     end
     self.count - start_count
   end
 
   def reset(id : String)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "update queue set status = 0, status_message = '', " \
-              "pages = 0, success_count = 0, fail_count = 0 " \
-              "where id = (?)", id
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "update queue set status = 0, status_message = '', " \
+                "pages = 0, success_count = 0, fail_count = 0 " \
+                "where id = (?)", id
+      end
     end
   end
 
@@ -169,16 +175,20 @@ class Queue
 
   # Reset all failed tasks (missing pages and error)
   def reset
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "update queue set status = 0, status_message = '', " \
-              "pages = 0, success_count = 0, fail_count = 0 " \
-              "where status = 2 or status = 4"
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "update queue set status = 0, status_message = '', " \
+                "pages = 0, success_count = 0, fail_count = 0 " \
+                "where status = 2 or status = 4"
+      end
     end
   end
 
   def delete(id : String)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "delete from queue where id = (?)", id
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "delete from queue where id = (?)", id
+      end
     end
   end
 
@@ -186,72 +196,105 @@ class Queue
     self.delete job.id
   end
 
+  def exists?(id : String)
+    res = false
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        res = db.query_one "select count(*) from queue where id = (?)", id,
+          as: Bool
+      end
+    end
+    res
+  end
+
+  def exists?(job : Job)
+    self.exists? job.id
+  end
+
   def delete_status(status : JobStatus)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "delete from queue where status = (?)", status.to_i
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "delete from queue where status = (?)", status.to_i
+      end
     end
   end
 
   def count_status(status : JobStatus)
     num = 0
-    DB.open "sqlite3://#{@path}" do |db|
-      num = db.query_one "select count(*) from queue where " \
-                         "status = (?)", status.to_i, as: Int32
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        num = db.query_one "select count(*) from queue where " \
+                           "status = (?)", status.to_i, as: Int32
+      end
     end
     num
   end
 
   def count
     num = 0
-    DB.open "sqlite3://#{@path}" do |db|
-      num = db.query_one "select count(*) from queue", as: Int32
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        num = db.query_one "select count(*) from queue", as: Int32
+      end
     end
     num
   end
 
   def set_status(status : JobStatus, job : Job)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "update queue set status = (?) where id = (?)",
-        status.to_i, job.id
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "update queue set status = (?) where id = (?)",
+          status.to_i, job.id
+      end
     end
   end
 
   def get_all
     jobs = [] of Job
-    DB.open "sqlite3://#{@path}" do |db|
-      jobs = db.query_all "select * from queue order by time" do |rs|
-        Job.from_query_result rs
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        jobs = db.query_all "select * from queue order by time" do |rs|
+          Job.from_query_result rs
+        end
       end
     end
     jobs
   end
 
   def add_success(job : Job)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "update queue set success_count = success_count + 1 " \
-              "where id = (?)", job.id
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "update queue set success_count = success_count + 1 " \
+                "where id = (?)", job.id
+      end
     end
   end
 
   def add_fail(job : Job)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "update queue set fail_count = fail_count + 1 " \
-              "where id = (?)", job.id
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "update queue set fail_count = fail_count + 1 " \
+                "where id = (?)", job.id
+      end
     end
   end
 
   def set_pages(pages : Int32, job : Job)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "update queue set pages = (?), success_count = 0, " \
-              "fail_count = 0 where id = (?)", pages, job.id
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "update queue set pages = (?), success_count = 0, " \
+                "fail_count = 0 where id = (?)", pages, job.id
+      end
     end
   end
 
   def add_message(msg : String, job : Job)
-    DB.open "sqlite3://#{@path}" do |db|
-      db.exec "update queue set status_message = " \
-              "status_message || (?) || (?) where id = (?)",
-        "\n", msg, job.id
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        db.exec "update queue set status_message = " \
+                "status_message || (?) || (?) where id = (?)",
+          "\n", msg, job.id
+      end
     end
   end
 
@@ -260,12 +303,12 @@ class Queue
   end
 
   def pause
-    @downloaders.each { |d| d.stopped = true }
+    @downloaders.each &.stopped=(true)
     @paused = true
   end
 
   def resume
-    @downloaders.each { |d| d.stopped = false }
+    @downloaders.each &.stopped=(false)
     @paused = false
   end
 

src/rename.cr

@@ -35,15 +35,15 @@ module Rename
 
   class Group < Base(Pattern | String)
     def render(hash : VHash)
-      return "" if @ary.select(&.is_a? Pattern)
+      return "" if @ary.select(Pattern)
                      .any? &.as(Pattern).render(hash).empty?
-      @ary.map do |e|
+      @ary.join do |e|
         if e.is_a? Pattern
           e.render hash
         else
           e
         end
-      end.join
+      end
     end
   end
 
@@ -129,19 +129,23 @@ module Rename
     end
 
     def render(hash : VHash)
-      str = @ary.map do |e|
+      str = @ary.join do |e|
         if e.is_a? String
           e
         else
           e.render hash
         end
-      end.join.strip
+      end.strip
       post_process str
     end
 
+    # Post-processes the generated file/folder name
+    #   - Handles the rare case where the string is `..`
+    #   - Removes trailing spaces and periods
+    #   - Replace illegal characters with `_`
     private def post_process(str)
       return "_" if str == ".."
-      str.gsub "/", "_"
+      str.rstrip(" .").gsub /[\/?<>\\:*|"^]/, "_"
     end
   end
 end

src/routes/admin.cr

@@ -1,13 +1,14 @@
-require "./router"
-
-class AdminRouter < Router
+struct AdminRouter
   def initialize
     get "/admin" do |env|
+      storage = Storage.default
+      missing_count = storage.missing_titles.size +
+                      storage.missing_entries.size
       layout "admin"
     end
 
     get "/admin/user" do |env|
-      users = @context.storage.list_users
+      users = Storage.default.list_users
       username = get_username env
       layout "user"
     end
@@ -32,11 +33,11 @@ class AdminRouter < Router
       #   would not contain `admin`
       admin = !env.params.body["admin"]?.nil?
 
-      @context.storage.new_user username, password, admin
+      Storage.default.new_user username, password, admin
 
       redirect env, "/admin/user"
     rescue e
-      @context.error e
+      Logger.error e
       redirect_url = URI.new \
         path: "/admin/user/edit",
         query: hash_to_query({"error" => e.message})
@@ -51,12 +52,12 @@ class AdminRouter < Router
       admin = !env.params.body["admin"]?.nil?
       original_username = env.params.url["original_username"]
 
-      @context.storage.update_user \
+      Storage.default.update_user \
         original_username, username, password, admin
 
       redirect env, "/admin/user"
     rescue e
-      @context.error e
+      Logger.error e
       redirect_url = URI.new \
         path: "/admin/user/edit",
         query: hash_to_query({"username" => original_username, \
@@ -68,5 +69,9 @@ class AdminRouter < Router
       mangadex_base_url = Config.current.mangadex["base_url"]
       layout "download-manager"
     end
+
+    get "/admin/missing" do |env|
+      layout "missing-items"
+    end
   end
 end

src/routes/api.cr

@@ -1,16 +1,77 @@
-require "./router"
-require "../mangadex/*"
 require "../upload"
+require "koa"
+require "digest"
+
+struct APIRouter
+  @@api_json : String?
+
+  API_VERSION = "0.1.0"
+
+  macro s(fields)
+    {
+      {% for field in fields %}
+        {{field}} => String,
+      {% end %}
+    }
+  end
 
-class APIRouter < Router
   def initialize
+    Koa.init "Mango API", version: API_VERSION, desc: <<-MD
+    # A Word of Caution
+
+    This API was designed for internal use only, and the design doesn't comply with the resources convention of a RESTful API. Because of this, most of the API endpoints listed here will soon be updated and removed in future versions of Mango, so use them at your own risk!
+
+    # Authentication
+
+    All endpoints require authentication. After logging in, your session ID would be stored as a cookie named `mango-sessid-#{Config.current.port}`, which can be used to authenticate the API access. Note that all admin API endpoints (`/api/admin/...`) require the logged-in user to have admin access.
+
+    # Terminologies
+
+    - Entry: An entry is a `cbz`/`cbr` file in your library. Depending on how you organize your manga collection, an entry can contain a chapter, a volume or even an entire manga.
+    - Title: A title contains a list of entries and optionally some sub-titles. For example, you can have a title to store a manga, and it contains a list of sub-titles representing the volumes in the manga. Each sub-title would then contain a list of entries representing the chapters in the volume.
+    - Library: The library is a collection of top-level titles, and it does not contain entries (though the titles do). A Mango instance can only have one library.
+    MD
+
+    Koa.cookie_auth "cookie", "mango-sessid-#{Config.current.port}"
+    Koa.define_tag "admin", desc: <<-MD
+      These are the admin endpoints only accessible for users with admin access. A non-admin user will get HTTP 403 when calling the endpoints.
+    MD
+
+    Koa.schema "entry", {
+      "pages" => Int32,
+      "mtime" => Int64,
+    }.merge(s %w(zip_path title size id title_id display_name cover_url)),
+      desc: "An entry in a book"
+
+    Koa.schema "title", {
+      "mtime"   => Int64,
+      "entries" => ["entry"],
+      "titles"  => ["title"],
+      "parents" => [String],
+    }.merge(s %w(dir title id display_name cover_url)),
+      desc: "A manga title (a collection of entries and sub-titles)"
+
+    Koa.schema "result", {
+      "success" => Bool,
+      "error"   => String?,
+    }
+
+    Koa.describe "Returns a page in a manga entry"
+    Koa.path "tid", desc: "Title ID"
+    Koa.path "eid", desc: "Entry ID"
+    Koa.path "page", schema: Int32, desc: "The page number to return (starts from 1)"
+    Koa.response 200, schema: Bytes, media_type: "image/*"
+    Koa.response 500, "Page not found or not readable"
+    Koa.response 304, "Page not modified (only available when `If-None-Match` is set)"
+    Koa.tag "reader"
     get "/api/page/:tid/:eid/:page" do |env|
       begin
         tid = env.params.url["tid"]
         eid = env.params.url["eid"]
         page = env.params.url["page"].to_i
+        prev_e_tag = env.request.headers["If-None-Match"]?
 
-        title = @context.library.get_title tid
+        title = Library.default.get_title tid
         raise "Title ID `#{tid}` not found" if title.nil?
         entry = title.get_entry eid
         raise "Entry ID `#{eid}` of `#{title.title}` not found" if entry.nil?
@@ -18,48 +79,165 @@ class APIRouter < Router
         raise "Failed to load page #{page} of " \
               "`#{title.title}/#{entry.title}`" if img.nil?
 
-        send_img env, img
+        e_tag = Digest::SHA1.hexdigest img.data
+        if prev_e_tag == e_tag
+          env.response.status_code = 304
+          ""
+        else
+          env.response.headers["ETag"] = e_tag
+          env.response.headers["Cache-Control"] = "public, max-age=86400"
+          send_img env, img
+        end
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 500
         e.message
       end
     end
 
-    get "/api/book/:tid" do |env|
+    Koa.describe "Returns the cover image of a manga entry"
+    Koa.path "tid", desc: "Title ID"
+    Koa.path "eid", desc: "Entry ID"
+    Koa.response 200, schema: Bytes, media_type: "image/*"
+    Koa.response 304, "Page not modified (only available when `If-None-Match` is set)"
+    Koa.response 500, "Page not found or not readable"
+    Koa.tag "library"
+    get "/api/cover/:tid/:eid" do |env|
       begin
         tid = env.params.url["tid"]
-        title = @context.library.get_title tid
-        raise "Title ID `#{tid}` not found" if title.nil?
+        eid = env.params.url["eid"]
+        prev_e_tag = env.request.headers["If-None-Match"]?
 
-        send_json env, title.to_json
+        title = Library.default.get_title tid
+        raise "Title ID `#{tid}` not found" if title.nil?
+        entry = title.get_entry eid
+        raise "Entry ID `#{eid}` of `#{title.title}` not found" if entry.nil?
+
+        img = entry.get_thumbnail || entry.read_page 1
+        raise "Failed to get cover of `#{title.title}/#{entry.title}`" \
+           if img.nil?
+
+        e_tag = Digest::SHA1.hexdigest img.data
+        if prev_e_tag == e_tag
+          env.response.status_code = 304
+          ""
+        else
+          env.response.headers["ETag"] = e_tag
+          send_img env, img
+        end
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 500
         e.message
       end
     end
 
-    get "/api/book" do |env|
-      send_json env, @context.library.to_json
+    Koa.describe "Returns the book with title `tid`", <<-MD
+    - Supply the `slim` query parameter to strip away "display_name", "cover_url", and "mtime" from the returned object to speed up the loading time
+    - Supply the `depth` query parameter to control the depth of nested titles to return.
+      - When `depth` is 1, returns the top-level titles and sub-titles/entries one level in them
+      - When `depth` is 0, returns the top-level titles without their sub-titles/entries
+      - When `depth` is N, returns the top-level titles and sub-titles/entries N levels in them
+      - When `depth` is negative, returns the entire library
+    MD
+    Koa.path "tid", desc: "Title ID"
+    Koa.query "slim"
+    Koa.query "depth"
+    Koa.query "sort", desc: "Sorting option for entries. Can be one of 'auto', 'title', 'progress', 'time_added' and 'time_modified'"
+    Koa.query "ascend", desc: "Sorting direction for entries. Set to 0 for the descending order. Doesn't work without specifying 'sort'"
+    Koa.response 200, schema: "title"
+    Koa.response 404, "Title not found"
+    Koa.tag "library"
+    get "/api/book/:tid" do |env|
+      begin
+        username = get_username env
+
+        sort_opt = SortOptions.new
+        get_sort_opt
+
+        tid = env.params.url["tid"]
+        title = Library.default.get_title tid
+        raise "Title ID `#{tid}` not found" if title.nil?
+
+        slim = !env.params.query["slim"]?.nil?
+        depth = env.params.query["depth"]?.try(&.to_i?) || -1
+
+        send_json env, title.build_json(slim: slim, depth: depth,
+          sort_context: {username: username,
+                         opt:      sort_opt})
+      rescue e
+        Logger.error e
+        env.response.status_code = 404
+        e.message
+      end
     end
 
+    Koa.describe "Returns the entire library with all titles and entries", <<-MD
+    - Supply the `slim` query parameter to strip away "display_name", "cover_url", and "mtime" from the returned object to speed up the loading time
+    - Supply the `dpeth` query parameter to control the depth of nested titles to return.
+      - When `depth` is 1, returns the requested title and sub-titles/entries one level in it
+      - When `depth` is 0, returns the requested title without its sub-titles/entries
+      - When `depth` is N, returns the requested title and sub-titles/entries N levels in it
+      - When `depth` is negative, returns the requested title and all sub-titles/entries in it
+    MD
+    Koa.query "slim"
+    Koa.query "depth"
+    Koa.response 200, schema: {
+      "dir"    => String,
+      "titles" => ["title"],
+    }
+    Koa.tag "library"
+    get "/api/library" do |env|
+      slim = !env.params.query["slim"]?.nil?
+      depth = env.params.query["depth"]?.try(&.to_i?) || -1
+
+      send_json env, Library.default.build_json(slim: slim, depth: depth)
+    end
+
+    Koa.describe "Triggers a library scan"
+    Koa.tags ["admin", "library"]
+    Koa.response 200, schema: {
+      "milliseconds" => Float64,
+      "titles"       => Int32,
+    }
     post "/api/admin/scan" do |env|
       start = Time.utc
-      @context.library.scan
+      Library.default.scan
       ms = (Time.utc - start).total_milliseconds
       send_json env, {
         "milliseconds" => ms,
-        "titles"       => @context.library.titles.size,
+        "titles"       => Library.default.titles.size,
       }.to_json
     end
 
-    post "/api/admin/user/delete/:username" do |env|
+    Koa.describe "Returns the thumbnail generation progress between 0 and 1"
+    Koa.tags ["admin", "library"]
+    Koa.response 200, schema: {
+      "progress" => Float64,
+    }
+    get "/api/admin/thumbnail_progress" do |env|
+      send_json env, {
+        "progress" => Library.default.thumbnail_generation_progress,
+      }.to_json
+    end
+
+    Koa.describe "Triggers a thumbnail generation"
+    Koa.tags ["admin", "library"]
+    post "/api/admin/generate_thumbnails" do |env|
+      spawn do
+        Library.default.generate_thumbnails
+      end
+    end
+
+    Koa.describe "Deletes a user with `username`"
+    Koa.tags ["admin", "users"]
+    Koa.response 200, schema: "result"
+    delete "/api/admin/user/delete/:username" do |env|
       begin
         username = env.params.url["username"]
-        @context.storage.delete_user username
+        Storage.default.delete_user username
       rescue e
-        @context.error e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -69,13 +247,25 @@ class APIRouter < Router
       end
     end
 
-    post "/api/progress/:title/:page" do |env|
+    Koa.describe "Updates the reading progress of an entry or the whole title for the current user", <<-MD
+      When `eid` is provided, sets the reading progress of the entry to `page`.
+
+      When `eid` is omitted, updates the progress of the entire title. Specifically:
+
+      - if `page` is 0, marks the entire title as unread
+      - otherwise, marks the entire title as read
+    MD
+    Koa.path "tid", desc: "Title ID"
+    Koa.query "eid", desc: "Entry ID", required: false
+    Koa.path "page", desc: "The new page number indicating the progress"
+    Koa.response 200, schema: "result"
+    Koa.tag "progress"
+    put "/api/progress/:tid/:page" do |env|
       begin
         username = get_username env
-        title = (@context.library.get_title env.params.url["title"])
-          .not_nil!
+        title = (Library.default.get_title env.params.url["tid"]).not_nil!
         page = env.params.url["page"].to_i
-        entry_id = env.params.query["entry"]?
+        entry_id = env.params.query["eid"]?
 
         if !entry_id.nil?
           entry = title.get_entry(entry_id).not_nil!
@@ -87,7 +277,7 @@ class APIRouter < Router
           title.read_all username
         end
       rescue e
-        @context.error e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -97,10 +287,18 @@ class APIRouter < Router
       end
     end
 
-    post "/api/bulk-progress/:action/:title" do |env|
+    Koa.describe "Updates the reading progress of multiple entries in a title"
+    Koa.path "action", desc: "The action to perform. Can be either `read` or `unread`"
+    Koa.path "tid", desc: "Title ID"
+    Koa.body schema: {
+      "ids" => [String],
+    }, desc: "An array of entry IDs"
+    Koa.response 200, schema: "result"
+    Koa.tag "progress"
+    put "/api/bulk_progress/:action/:tid" do |env|
       begin
         username = get_username env
-        title = (@context.library.get_title env.params.url["title"]).not_nil!
+        title = (Library.default.get_title env.params.url["tid"]).not_nil!
         action = env.params.url["action"]
         ids = env.params.json["ids"].as(Array).map &.as_s
 
@@ -109,7 +307,7 @@ class APIRouter < Router
         end
         title.bulk_progress action, ids, username
       rescue e
-        @context.error e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -119,12 +317,20 @@ class APIRouter < Router
       end
     end
 
-    post "/api/admin/display_name/:title/:name" do |env|
+    Koa.describe "Sets the display name of a title or an entry", <<-MD
+      When `eid` is provided, apply the display name to the entry. Otherwise, apply the display name to the title identified by `tid`.
+    MD
+    Koa.tags ["admin", "library"]
+    Koa.path "tid", desc: "Title ID"
+    Koa.query "eid", desc: "Entry ID", required: false
+    Koa.path "name", desc: "The new display name"
+    Koa.response 200, schema: "result"
+    put "/api/admin/display_name/:tid/:name" do |env|
       begin
-        title = (@context.library.get_title env.params.url["title"])
+        title = (Library.default.get_title env.params.url["tid"])
           .not_nil!
         name = env.params.url["name"]
-        entry = env.params.query["entry"]?
+        entry = env.params.query["eid"]?
         if entry.nil?
           title.set_display_name name
         else
@@ -132,7 +338,7 @@ class APIRouter < Router
           title.set_display_name eobj.not_nil!.title, name
         end
       rescue e
-        @context.error e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -142,51 +348,42 @@ class APIRouter < Router
       end
     end
 
-    get "/api/admin/mangadex/manga/:id" do |env|
-      begin
-        id = env.params.url["id"]
-        api = MangaDex::API.default
-        manga = api.get_manga id
-        send_json env, manga.to_info_json
-      rescue e
-        @context.error e
-        send_json env, {"error" => e.message}.to_json
-      end
-    end
-
-    post "/api/admin/mangadex/download" do |env|
-      begin
-        chapters = env.params.json["chapters"].as(Array).map { |c| c.as_h }
-        jobs = chapters.map { |chapter|
-          Queue::Job.new(
-            chapter["id"].as_s,
-            chapter["manga_id"].as_s,
-            chapter["full_title"].as_s,
-            chapter["manga_title"].as_s,
-            Queue::JobStatus::Pending,
-            Time.unix chapter["time"].as_s.to_i
-          )
-        }
-        inserted_count = @context.queue.push jobs
-        send_json env, {
-          "success": inserted_count,
-          "fail":    jobs.size - inserted_count,
-        }.to_json
-      rescue e
-        @context.error e
-        send_json env, {"error" => e.message}.to_json
+    ws "/api/admin/mangadex/queue" do |socket, env|
+      interval_raw = env.params.query["interval"]?
+      interval = (interval_raw.to_i? if interval_raw) || 5
+      loop do
+        socket.send({
+          "jobs"   => Queue.default.get_all.reverse,
+          "paused" => Queue.default.paused?,
+        }.to_json)
+        sleep interval.seconds
       end
     end
 
+    Koa.describe "Returns the current download queue", <<-MD
+      On error, returns a JSON that contains the error message in the `error` field.
+    MD
+    Koa.tags ["admin", "downloader"]
+    Koa.response 200, schema: {
+      "success" => Bool,
+      "error"   => String?,
+      "paused"  => Bool?,
+      "jobs?"   => [{
+        "pages"         => Int32,
+        "success_count" => Int32,
+        "fail_count"    => Int32,
+        "time"          => Int64,
+      }.merge(s %w(id manga_id title manga_title status_message status))],
+    }
     get "/api/admin/mangadex/queue" do |env|
       begin
-        jobs = @context.queue.get_all
         send_json env, {
-          "jobs"    => jobs,
-          "paused"  => @context.queue.paused?,
+          "jobs"    => Queue.default.get_all.reverse,
+          "paused"  => Queue.default.paused?,
           "success" => true,
         }.to_json
       rescue e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -194,6 +391,19 @@ class APIRouter < Router
       end
     end
 
+    Koa.describe "Perform an action on a download job or all jobs in the queue", <<-MD
+      The `action` parameter can be `delete`, `retry`, `pause` or `resume`.
+
+      When `action` is `pause` or `resume`, pauses or resumes the download queue, respectively.
+
+      When `action` is set to `delete`, the behavior depends on `id`. If `id` is provided, deletes the specific job identified by the ID. Otherwise, deletes all **completed** jobs in the queue.
+
+      When `action` is set to `retry`, the behavior depends on `id`. If `id` is provided, restarts the job identified by the ID. Otherwise, retries all jobs in the `Error` or `MissingPages` status in the queue.
+    MD
+    Koa.tags ["admin", "downloader"]
+    Koa.path "action", desc: "The action to perform. It should be one of the followins: `delete`, `retry`, `pause` and `resume`."
+    Koa.query "id", required: false, desc: "A job ID"
+    Koa.response 200, schema: "result"
     post "/api/admin/mangadex/queue/:action" do |env|
       begin
         action = env.params.url["action"]
@@ -201,26 +411,27 @@ class APIRouter < Router
         case action
         when "delete"
           if id.nil?
-            @context.queue.delete_status Queue::JobStatus::Completed
+            Queue.default.delete_status Queue::JobStatus::Completed
           else
-            @context.queue.delete id
+            Queue.default.delete id
           end
         when "retry"
           if id.nil?
-            @context.queue.reset
+            Queue.default.reset
           else
-            @context.queue.reset id
+            Queue.default.reset id
           end
         when "pause"
-          @context.queue.pause
+          Queue.default.pause
         when "resume"
-          @context.queue.resume
+          Queue.default.resume
         else
           raise "Unknown queue action #{action}"
         end
 
         send_json env, {"success" => true}.to_json
       rescue e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -228,6 +439,24 @@ class APIRouter < Router
       end
     end
 
+    Koa.describe "Uploads a file to the server", <<-MD
+      Currently the only supported value for the `target` parameter is `cover`.
+
+      ### Cover
+
+      Uploads a cover image for a title or an entry.
+
+      Query parameters:
+      - `tid`: A title ID
+      - `eid`: (Optional) An entry ID
+
+      When `eid` is omitted, the new cover image will be applied to the title. Otherwise, applies the image to the specified entry.
+    MD
+    Koa.tag "admin"
+    Koa.body media_type: "multipart/form-data", schema: {
+      "file" => Bytes,
+    }
+    Koa.response 200, schema: "result"
     post "/api/admin/upload/:target" do |env|
       begin
         target = env.params.url["target"]
@@ -242,9 +471,9 @@ class APIRouter < Router
 
           case target
           when "cover"
-            title_id = env.params.query["title"]
-            entry_id = env.params.query["entry"]?
-            title = @context.library.get_title(title_id).not_nil!
+            title_id = env.params.query["tid"]
+            entry_id = env.params.query["eid"]?
+            title = Library.default.get_title(title_id).not_nil!
 
             unless SUPPORTED_IMG_TYPES.includes? \
                      MIME.from_filename? filename
@@ -275,6 +504,7 @@ class APIRouter < Router
 
         raise "No part with name `file` found"
       rescue e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -282,10 +512,23 @@ class APIRouter < Router
       end
     end
 
-    post "/api/admin/plugin/list" do |env|
+    Koa.describe "Lists the chapters in a title from a plugin"
+    Koa.tags ["admin", "downloader"]
+    Koa.query "plugin", schema: String
+    Koa.query "query", schema: String
+    Koa.response 200, schema: {
+      "success"   => Bool,
+      "error"     => String?,
+      "chapters?" => [{
+        "id"    => String,
+        "title" => String,
+      }],
+      "title" => String?,
+    }
+    get "/api/admin/plugin/list" do |env|
       begin
-        query = env.params.json["query"].as String
-        plugin = Plugin.new env.params.json["plugin"].as String
+        query = env.params.query["query"].as String
+        plugin = Plugin.new env.params.query["plugin"].as String
 
         json = plugin.list_chapters query
         chapters = json["chapters"]
@@ -297,6 +540,7 @@ class APIRouter < Router
           "title"    => title,
         }.to_json
       rescue e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
@@ -304,6 +548,20 @@ class APIRouter < Router
       end
     end
 
+    Koa.describe "Adds a list of chapters from a plugin to the download queue"
+    Koa.tags ["admin", "downloader"]
+    Koa.body schema: {
+      "plugin"   => String,
+      "title"    => String,
+      "chapters" => [{
+        "id"    => String,
+        "title" => String,
+      }],
+    }
+    Koa.response 200, schema: {
+      "success" => Int32,
+      "fail"    => Int32,
+    }
     post "/api/admin/plugin/download" do |env|
       begin
         plugin = Plugin.new env.params.json["plugin"].as String
@@ -320,17 +578,325 @@ class APIRouter < Router
             Time.utc
           )
         }
-        inserted_count = @context.queue.push jobs
+        inserted_count = Queue.default.push jobs
         send_json env, {
           "success": inserted_count,
           "fail":    jobs.size - inserted_count,
         }.to_json
       rescue e
+        Logger.error e
         send_json env, {
           "success" => false,
           "error"   => e.message,
         }.to_json
       end
     end
+
+    Koa.describe "Returns the image dimensions of all pages in an entry"
+    Koa.path "tid", desc: "A title ID"
+    Koa.path "eid", desc: "An entry ID"
+    Koa.tag "reader"
+    Koa.response 200, schema: {
+      "success"     => Bool,
+      "error"       => String?,
+      "dimensions?" => [{
+        "width"  => Int32,
+        "height" => Int32,
+      }],
+    }
+    Koa.response 304, "Not modified (only available when `If-None-Match` is set)"
+    get "/api/dimensions/:tid/:eid" do |env|
+      begin
+        tid = env.params.url["tid"]
+        eid = env.params.url["eid"]
+        prev_e_tag = env.request.headers["If-None-Match"]?
+
+        title = Library.default.get_title tid
+        raise "Title ID `#{tid}` not found" if title.nil?
+        entry = title.get_entry eid
+        raise "Entry ID `#{eid}` of `#{title.title}` not found" if entry.nil?
+
+        file_hash = Digest::SHA1.hexdigest (entry.zip_path + entry.mtime.to_s)
+        e_tag = "W/#{file_hash}"
+        if e_tag == prev_e_tag
+          env.response.status_code = 304
+          ""
+        else
+          sizes = entry.page_dimensions
+          env.response.headers["ETag"] = e_tag
+          env.response.headers["Cache-Control"] = "public, max-age=86400"
+          send_json env, {
+            "success"    => true,
+            "dimensions" => sizes,
+          }.to_json
+        end
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Downloads an entry"
+    Koa.path "tid", desc: "A title ID"
+    Koa.path "eid", desc: "An entry ID"
+    Koa.response 200, schema: Bytes
+    Koa.response 404, "Entry not found"
+    Koa.tags ["library", "reader"]
+    get "/api/download/:tid/:eid" do |env|
+      begin
+        title = (Library.default.get_title env.params.url["tid"]).not_nil!
+        entry = (title.get_entry env.params.url["eid"]).not_nil!
+
+        send_attachment env, entry.zip_path
+      rescue e
+        Logger.error e
+        env.response.status_code = 404
+      end
+    end
+
+    Koa.describe "Gets the tags of a title"
+    Koa.path "tid", desc: "A title ID"
+    Koa.response 200, schema: {
+      "success" => Bool,
+      "error"   => String?,
+      "tags"    => [String?],
+    }
+    Koa.tags ["library", "tags"]
+    get "/api/tags/:tid" do |env|
+      begin
+        title = (Library.default.get_title env.params.url["tid"]).not_nil!
+        tags = title.tags
+
+        send_json env, {
+          "success" => true,
+          "tags"    => tags,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Returns all tags"
+    Koa.response 200, schema: {
+      "success" => Bool,
+      "error"   => String?,
+      "tags"    => [String?],
+    }
+    Koa.tags ["library", "tags"]
+    get "/api/tags" do |env|
+      begin
+        tags = Storage.default.list_tags
+        send_json env, {
+          "success" => true,
+          "tags"    => tags,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Adds a new tag to a title"
+    Koa.path "tid", desc: "A title ID"
+    Koa.response 200, schema: "result"
+    Koa.tags ["admin", "library", "tags"]
+    put "/api/admin/tags/:tid/:tag" do |env|
+      begin
+        title = (Library.default.get_title env.params.url["tid"]).not_nil!
+        tag = env.params.url["tag"]
+
+        title.add_tag tag
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Deletes a tag from a title"
+    Koa.path "tid", desc: "A title ID"
+    Koa.response 200, schema: "result"
+    Koa.tags ["admin", "library", "tags"]
+    delete "/api/admin/tags/:tid/:tag" do |env|
+      begin
+        title = (Library.default.get_title env.params.url["tid"]).not_nil!
+        tag = env.params.url["tag"]
+
+        title.delete_tag tag
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Lists all missing titles"
+    Koa.response 200, schema: {
+      "success" => Bool,
+      "error"   => String?,
+      "titles?" => [{
+        "path"      => String,
+        "id"        => String,
+        "signature" => String,
+      }],
+    }
+    Koa.tags ["admin", "library"]
+    get "/api/admin/titles/missing" do |env|
+      begin
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+          "titles"  => Storage.default.missing_titles,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Lists all missing entries"
+    Koa.response 200, schema: {
+      "success"  => Bool,
+      "error"    => String?,
+      "entries?" => [{
+        "path"      => String,
+        "id"        => String,
+        "signature" => String,
+      }],
+    }
+    Koa.tags ["admin", "library"]
+    get "/api/admin/entries/missing" do |env|
+      begin
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+          "entries" => Storage.default.missing_entries,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Deletes all missing titles"
+    Koa.response 200, schema: "result"
+    Koa.tags ["admin", "library"]
+    delete "/api/admin/titles/missing" do |env|
+      begin
+        Storage.default.delete_missing_title
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Deletes all missing entries"
+    Koa.response 200, schema: "result"
+    Koa.tags ["admin", "library"]
+    delete "/api/admin/entries/missing" do |env|
+      begin
+        Storage.default.delete_missing_entry
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Deletes a missing title identified by `tid`", <<-MD
+    Does nothing if the given `tid` is not found or if the title is not missing.
+    MD
+    Koa.response 200, schema: "result"
+    Koa.tags ["admin", "library"]
+    delete "/api/admin/titles/missing/:tid" do |env|
+      begin
+        tid = env.params.url["tid"]
+        Storage.default.delete_missing_title tid
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    Koa.describe "Deletes a missing entry identified by `eid`", <<-MD
+    Does nothing if the given `eid` is not found or if the entry is not missing.
+    MD
+    Koa.response 200, schema: "result"
+    Koa.tags ["admin", "library"]
+    delete "/api/admin/entries/missing/:eid" do |env|
+      begin
+        eid = env.params.url["eid"]
+        Storage.default.delete_missing_entry eid
+        send_json env, {
+          "success" => true,
+          "error"   => nil,
+        }.to_json
+      rescue e
+        Logger.error e
+        send_json env, {
+          "success" => false,
+          "error"   => e.message,
+        }.to_json
+      end
+    end
+
+    doc = Koa.generate
+    @@api_json = doc.to_json if doc
+
+    get "/openapi.json" do |env|
+      if @@api_json
+        send_json env, @@api_json
+      else
+        env.response.status_code = 404
+      end
+    end
   end
 end

src/routes/main.cr

@@ -1,6 +1,4 @@
-require "./router"
-
-class MainRouter < Router
+struct MainRouter
   def initialize
     get "/login" do |env|
       base_url = Config.current.base_url
@@ -11,7 +9,7 @@ class MainRouter < Router
       begin
         env.session.delete_string "token"
       rescue e
-        @context.error "Error when attempting to log out: #{e}"
+        Logger.error "Error when attempting to log out: #{e}"
       ensure
         redirect env, "/login"
       end
@@ -21,7 +19,7 @@ class MainRouter < Router
       begin
         username = env.params.body["username"]
         password = env.params.body["password"]
-        token = @context.storage.verify_user(username, password).not_nil!
+        token = Storage.default.verify_user(username, password).not_nil!
 
         env.session.string "token", token
 
@@ -32,7 +30,8 @@ class MainRouter < Router
         else
           redirect env, "/"
         end
-      rescue
+      rescue e
+        Logger.error e
         redirect env, "/login"
       end
     end
@@ -41,43 +40,38 @@ class MainRouter < Router
       begin
         username = get_username env
 
-        sort_opt = SortOptions.from_info_json @context.library.dir, username
-        get_sort_opt
+        sort_opt = SortOptions.from_info_json Library.default.dir, username
+        get_and_save_sort_opt Library.default.dir
 
-        titles = @context.library.sorted_titles username, sort_opt
+        titles = Library.default.sorted_titles username, sort_opt
         percentage = titles.map &.load_percentage username
 
         layout "library"
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 500
       end
     end
 
     get "/book/:title" do |env|
       begin
-        title = (@context.library.get_title env.params.url["title"]).not_nil!
+        title = (Library.default.get_title env.params.url["title"]).not_nil!
         username = get_username env
 
         sort_opt = SortOptions.from_info_json title.dir, username
-        get_sort_opt
+        get_and_save_sort_opt title.dir
 
         entries = title.sorted_entries username, sort_opt
-
         percentage = title.load_percentage_for_all_entries username, sort_opt
         title_percentage = title.titles.map &.load_percentage username
+
         layout "title"
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 500
       end
     end
 
-    get "/download" do |env|
-      mangadex_base_url = Config.current.mangadex["base_url"]
-      layout "download"
-    end
-
     get "/download/plugins" do |env|
       begin
         id = env.params.query["plugin"]?
@@ -92,7 +86,7 @@ class MainRouter < Router
 
         layout "plugin-download"
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 500
       end
     end
@@ -100,18 +94,64 @@ class MainRouter < Router
     get "/" do |env|
       begin
         username = get_username env
-        continue_reading = @context
-          .library.get_continue_reading_entries username
-        recently_added = @context.library.get_recently_added_entries username
-        start_reading = @context.library.get_start_reading_titles username
-        titles = @context.library.titles
-        new_user = !titles.any? { |t| t.load_percentage(username) > 0 }
+        continue_reading = Library.default
+          .get_continue_reading_entries username
+        recently_added = Library.default.get_recently_added_entries username
+        start_reading = Library.default.get_start_reading_titles username
+        titles = Library.default.titles
+        new_user = !titles.any? &.load_percentage(username).> 0
         empty_library = titles.size == 0
         layout "home"
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 500
       end
     end
+
+    get "/tags/:tag" do |env|
+      begin
+        username = get_username env
+        tag = env.params.url["tag"]
+
+        sort_opt = SortOptions.new
+        get_sort_opt
+
+        title_ids = Storage.default.get_tag_titles tag
+
+        raise "Tag #{tag} not found" if title_ids.empty?
+
+        titles = title_ids.map { |id| Library.default.get_title id }
+          .select Title
+
+        titles = sort_titles titles, sort_opt, username
+        percentage = titles.map &.load_percentage username
+
+        layout "tag"
+      rescue e
+        Logger.error e
+        env.response.status_code = 404
+      end
+    end
+
+    get "/tags" do |env|
+      tags = Storage.default.list_tags.map do |tag|
+        {
+          tag:         tag,
+          encoded_tag: URI.encode_www_form(tag, space_to_plus: false),
+          count:       Storage.default.get_tag_titles(tag).size,
+        }
+      end
+      # Sort by :count reversly, and then sort by :tag
+      tags.sort! do |a, b|
+        (b[:count] <=> a[:count]).or(a[:tag] <=> b[:tag])
+      end
+
+      layout "tags"
+    end
+
+    get "/api" do |env|
+      base_url = Config.current.base_url
+      render "src/views/api.html.ecr"
+    end
   end
 end

src/routes/opds.cr

@@ -1,30 +1,16 @@
-require "./router"
-
-class OPDSRouter < Router
+struct OPDSRouter
   def initialize
     get "/opds" do |env|
-      titles = @context.library.titles
+      titles = Library.default.titles
       render_xml "src/views/opds/index.xml.ecr"
     end
 
     get "/opds/book/:title_id" do |env|
       begin
-        title = @context.library.get_title(env.params.url["title_id"]).not_nil!
+        title = Library.default.get_title(env.params.url["title_id"]).not_nil!
         render_xml "src/views/opds/title.xml.ecr"
       rescue e
-        @context.error e
-        env.response.status_code = 404
-      end
-    end
-
-    get "/opds/download/:title/:entry" do |env|
-      begin
-        title = (@context.library.get_title env.params.url["title"]).not_nil!
-        entry = (title.get_entry env.params.url["entry"]).not_nil!
-
-        send_attachment env, entry.zip_path
-      rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 404
       end
     end

src/routes/reader.cr

@@ -1,29 +1,23 @@
-require "./router"
-
-class ReaderRouter < Router
+struct ReaderRouter
   def initialize
     get "/reader/:title/:entry" do |env|
       begin
         username = get_username env
 
-        title = (@context.library.get_title env.params.url["title"]).not_nil!
+        title = (Library.default.get_title env.params.url["title"]).not_nil!
         entry = (title.get_entry env.params.url["entry"]).not_nil!
 
         next layout "reader-error" if entry.err_msg
 
         # load progress
-        page = entry.load_progress username
-        # we go back 2 * `IMGS_PER_PAGE` pages. the infinite scroll
-        #   library perloads a few pages in advance, and the user
-        #   might not have actually read them
-        page = [page - 2 * IMGS_PER_PAGE, 1].max
+        page_idx = [1, entry.load_progress username].max
 
         # start from page 1 if the user has finished reading the entry
-        page = 1 if entry.finished? username
+        page_idx = 1 if entry.finished? username
 
-        redirect env, "/reader/#{title.id}/#{entry.id}/#{page}"
+        redirect env, "/reader/#{title.id}/#{entry.id}/#{page_idx}"
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 404
       end
     end
@@ -32,36 +26,33 @@ class ReaderRouter < Router
       begin
         base_url = Config.current.base_url
 
-        title = (@context.library.get_title env.params.url["title"]).not_nil!
-        entry = (title.get_entry env.params.url["entry"]).not_nil!
-        page = env.params.url["page"].to_i
-        raise "" if page > entry.pages || page <= 0
-
-        # save progress
         username = get_username env
-        entry.save_progress username, page
 
-        pages = (page...[entry.pages + 1, page + IMGS_PER_PAGE].min)
-        urls = pages.map { |idx|
-          "#{base_url}api/page/#{title.id}/#{entry.id}/#{idx}"
-        }
-        reader_urls = pages.map { |idx|
-          "#{base_url}reader/#{title.id}/#{entry.id}/#{idx}"
-        }
-        next_page = page + IMGS_PER_PAGE
-        next_url = next_entry_url = nil
-        exit_url = "#{base_url}book/#{title.id}"
-        next_entry = entry.next_entry username
-        unless next_page > entry.pages
-          next_url = "#{base_url}reader/#{title.id}/#{entry.id}/#{next_page}"
+        title = (Library.default.get_title env.params.url["title"]).not_nil!
+        entry = (title.get_entry env.params.url["entry"]).not_nil!
+
+        sort_opt = SortOptions.from_info_json title.dir, username
+        get_sort_opt
+        entries = title.sorted_entries username, sort_opt
+
+        page_idx = env.params.url["page"].to_i
+        if page_idx > entry.pages || page_idx <= 0
+          raise "Page #{page_idx} not found."
         end
-        unless next_entry.nil?
-          next_entry_url = "#{base_url}reader/#{title.id}/#{next_entry.id}"
+
+        exit_url = "#{base_url}book/#{title.id}"
+
+        next_entry_url = entry.next_entry(username).try do |e|
+          "#{base_url}reader/#{title.id}/#{e.id}"
+        end
+
+        previous_entry_url = entry.previous_entry(username).try do |e|
+          "#{base_url}reader/#{title.id}/#{e.id}"
         end
 
         render "src/views/reader.html.ecr"
       rescue e
-        @context.error e
+        Logger.error e
         env.response.status_code = 404
       end
     end

src/routes/router.cr

@@ -1,3 +0,0 @@
-class Router
-  @context : Context = Context.default
-end

src/server.cr

@@ -5,34 +5,8 @@ require "./handlers/*"
 require "./util/*"
 require "./routes/*"
 
-class Context
-  property library : Library
-  property storage : Storage
-  property queue : Queue
-
-  use_default
-
-  def initialize
-    @storage = Storage.default
-    @library = Library.default
-    @queue = Queue.default
-  end
-
-  {% for lvl in Logger::LEVELS %}
-      def {{lvl.id}}(msg)
-          Logger.{{lvl.id}} msg
-      end
-  {% end %}
-end
-
 class Server
-  @context : Context = Context.default
-
   def initialize
-    error 403 do |env|
-      message = "HTTP 403: You are not authorized to visit #{env.request.path}"
-      layout "message"
-    end
     error 404 do |env|
       message = "HTTP 404: Mango cannot find the page #{env.request.path}"
       layout "message"
@@ -53,11 +27,11 @@ class Server
 
     Kemal.config.logging = false
     add_handler LogHandler.new
-    add_handler AuthHandler.new @context.storage
+    add_handler AuthHandler.new
     add_handler UploadHandler.new Config.current.upload_path
     {% if flag?(:release) %}
       # when building for relase, embed the static files in binary
-      @context.debug "We are in release mode. Using embedded static files."
+      Logger.debug "We are in release mode. Using embedded static files."
       serve_static false
       add_handler StaticHandler.new
     {% end %}
@@ -71,10 +45,11 @@ class Server
   end
 
   def start
-    @context.debug "Starting Kemal server"
+    Logger.debug "Starting Kemal server"
     {% if flag?(:release) %}
       Kemal.config.env = "production"
     {% end %}
+    Kemal.config.host_binding = Config.current.host
     Kemal.config.port = Config.current.port
     Kemal.run
   end

src/storage.cr

@@ -3,6 +3,8 @@ require "crypto/bcrypt"
 require "uuid"
 require "base64"
 require "./util/*"
+require "mg"
+require "../migration/*"
 
 def hash_password(pw)
   Crypto::Bcrypt::Password.create(pw).to_s
@@ -13,13 +15,16 @@ def verify_password(hash, pw)
 end
 
 class Storage
+  @@insert_entry_ids = [] of IDTuple
+  @@insert_title_ids = [] of IDTuple
+
   @path : String
   @db : DB::Database?
-  @insert_ids = [] of IDTuple
 
-  alias IDTuple = NamedTuple(path: String,
+  alias IDTuple = NamedTuple(
+    path: String,
     id: String,
-    is_title: Bool)
+    signature: String?)
 
   use_default
 
@@ -29,41 +34,24 @@ class Storage
     dir = File.dirname @path
     unless Dir.exists? dir
       Logger.info "The DB directory #{dir} does not exist. " \
-                  "Attepmting to create it"
+                  "Attempting to create it"
       Dir.mkdir_p dir
     end
-    DB.open "sqlite3://#{@path}" do |db|
-      begin
-        # We create the `ids` table first. even if the uses has an
-        #   early version installed and has the `user` table only,
-        #   we will still be able to create `ids`
-        db.exec "create table ids" \
-                "(path text, id text, is_title integer)"
-        db.exec "create unique index path_idx on ids (path)"
-        db.exec "create unique index id_idx on ids (id)"
-
-        db.exec "create table users" \
-                "(username text, password text, token text, admin integer)"
-      rescue e
-        unless e.message.not_nil!.ends_with? "already exists"
-          Logger.fatal "Error when checking tables in DB: #{e}"
+    MainFiber.run do
+      DB.open "sqlite3://#{@path}" do |db|
+        begin
+          MG::Migration.new(db, log: Logger.default.raw_log).migrate
+        rescue e
+          Logger.fatal "DB migration failed. #{e}"
           raise e
         end
 
-        # If the DB is initialized through CLI but no user is added, we need
-        #   to create the admin user when first starting the app
         user_count = db.query_one "select count(*) from users", as: Int32
         init_admin if init_user && user_count == 0
-      else
-        Logger.debug "Creating DB file at #{@path}"
-        db.exec "create unique index username_idx on users (username)"
-        db.exec "create unique index token_idx on users (token)"
-
-        init_admin if init_user
       end
-    end
-    unless @auto_close
-      @db = DB.open "sqlite3://#{@path}"
+      unless @auto_close
+        @db = DB.open "sqlite3://#{@path}"
+      end
     end
   end
 
@@ -79,45 +67,77 @@ class Storage
   private def get_db(&block : DB::Database ->)
     if @db.nil?
       DB.open "sqlite3://#{@path}" do |db|
+        db.exec "PRAGMA foreign_keys = 1"
         yield db
       end
     else
+      @db.not_nil!.exec "PRAGMA foreign_keys = 1"
       yield @db.not_nil!
     end
   end
 
-  def verify_user(username, password)
-    get_db do |db|
-      begin
-        hash, token = db.query_one "select password, token from " \
-                                   "users where username = (?)",
-          username, as: {String, String?}
-        unless verify_password hash, password
-          Logger.debug "Password does not match the hash"
-          return nil
-        end
-        Logger.debug "User #{username} verified"
-        return token if token
-        token = random_str
-        Logger.debug "Updating token for #{username}"
-        db.exec "update users set token = (?) where username = (?)",
-          token, username
-        return token
-      rescue e
-        Logger.error "Error when verifying user #{username}: #{e}"
-        return nil
+  def username_exists(username)
+    exists = false
+    MainFiber.run do
+      get_db do |db|
+        exists = db.query_one("select count(*) from users where " \
+                              "username = (?)", username, as: Int32) > 0
       end
     end
+    exists
+  end
+
+  def username_is_admin(username)
+    is_admin = false
+    MainFiber.run do
+      get_db do |db|
+        is_admin = db.query_one("select admin from users where " \
+                                "username = (?)", username, as: Int32) > 0
+      end
+    end
+    is_admin
+  end
+
+  def verify_user(username, password)
+    out_token = nil
+    MainFiber.run do
+      get_db do |db|
+        begin
+          hash, token = db.query_one "select password, token from " \
+                                     "users where username = (?)",
+            username, as: {String, String?}
+          unless verify_password hash, password
+            Logger.debug "Password does not match the hash"
+            next
+          end
+          Logger.debug "User #{username} verified"
+          if token
+            out_token = token
+            next
+          end
+          token = random_str
+          Logger.debug "Updating token for #{username}"
+          db.exec "update users set token = (?) where username = (?)",
+            token, username
+          out_token = token
+        rescue e
+          Logger.error "Error when verifying user #{username}: #{e}"
+        end
+      end
+    end
+    out_token
   end
 
   def verify_token(token)
     username = nil
-    get_db do |db|
-      begin
-        username = db.query_one "select username from users where " \
-                                "token = (?)", token, as: String
-      rescue e
-        Logger.debug "Unable to verify token"
+    MainFiber.run do
+      get_db do |db|
+        begin
+          username = db.query_one "select username from users where " \
+                                  "token = (?)", token, as: String
+        rescue e
+          Logger.debug "Unable to verify token"
+        end
       end
     end
     username
@@ -125,12 +145,14 @@ class Storage
 
   def verify_admin(token)
     is_admin = false
-    get_db do |db|
-      begin
-        is_admin = db.query_one "select admin from users where " \
-                                "token = (?)", token, as: Bool
-      rescue e
-        Logger.debug "Unable to verify user as admin"
+    MainFiber.run do
+      get_db do |db|
+        begin
+          is_admin = db.query_one "select admin from users where " \
+                                  "token = (?)", token, as: Bool
+        rescue e
+          Logger.debug "Unable to verify user as admin"
+        end
       end
     end
     is_admin
@@ -138,10 +160,12 @@ class Storage
 
   def list_users
     results = Array(Tuple(String, Bool)).new
-    get_db do |db|
-      db.query "select username, admin from users" do |rs|
-        rs.each do
-          results << {rs.read(String), rs.read(Bool)}
+    MainFiber.run do
+      get_db do |db|
+        db.query "select username, admin from users" do |rs|
+          rs.each do
+            results << {rs.read(String), rs.read(Bool)}
+          end
         end
       end
     end
@@ -152,10 +176,12 @@ class Storage
     validate_username username
     validate_password password
     admin = (admin ? 1 : 0)
-    get_db do |db|
-      hash = hash_password password
-      db.exec "insert into users values (?, ?, ?, ?)",
-        username, hash, nil, admin
+    MainFiber.run do
+      get_db do |db|
+        hash = hash_password password
+        db.exec "insert into users values (?, ?, ?, ?)",
+          username, hash, nil, admin
+      end
     end
   end
 
@@ -163,63 +189,380 @@ class Storage
     admin = (admin ? 1 : 0)
     validate_username username
     validate_password password unless password.empty?
-    get_db do |db|
-      if password.empty?
-        db.exec "update users set username = (?), admin = (?) " \
-                "where username = (?)",
-          username, admin, original_username
-      else
-        hash = hash_password password
-        db.exec "update users set username = (?), admin = (?)," \
-                "password = (?) where username = (?)",
-          username, admin, hash, original_username
+    MainFiber.run do
+      get_db do |db|
+        if password.empty?
+          db.exec "update users set username = (?), admin = (?) " \
+                  "where username = (?)",
+            username, admin, original_username
+        else
+          hash = hash_password password
+          db.exec "update users set username = (?), admin = (?)," \
+                  "password = (?) where username = (?)",
+            username, admin, hash, original_username
+        end
       end
     end
   end
 
   def delete_user(username)
-    get_db do |db|
-      db.exec "delete from users where username = (?)", username
+    MainFiber.run do
+      get_db do |db|
+        db.exec "delete from users where username = (?)", username
+      end
     end
   end
 
   def logout(token)
-    get_db do |db|
-      begin
-        db.exec "update users set token = (?) where token = (?)", nil, token
-      rescue
+    MainFiber.run do
+      get_db do |db|
+        begin
+          db.exec "update users set token = (?) where token = (?)", nil, token
+        rescue
+        end
       end
     end
   end
 
-  def get_id(path, is_title)
+  def get_title_id(path, signature)
     id = nil
-    get_db do |db|
-      id = db.query_one? "select id from ids where path = (?)", path,
-        as: {String}
+    path = Path.new(path).relative_to(Config.current.library_path).to_s
+    MainFiber.run do
+      get_db do |db|
+        # First attempt to find the matching title in DB using BOTH path
+        #   and signature
+        id = db.query_one? "select id from titles where path = (?) and " \
+                           "signature = (?) and unavailable = 0",
+          path, signature.to_s, as: String
+
+        should_update = id.nil?
+        # If it fails, try to match using the path only. This could happen
+        #   for example when a new entry is added to the title
+        id ||= db.query_one? "select id from titles where path = (?)", path,
+          as: String
+
+        # If it still fails, we will have to rely on the signature values.
+        #   This could happen when the user moved or renamed the title, or
+        #   a title containing the title
+        unless id
+          # If there are multiple rows with the same signature (this could
+          #   happen simply by bad luck, or when the user copied a title),
+          #   pick the row that has the most similar path to the give path
+          rows = [] of Tuple(String, String)
+          db.query "select id, path from titles where signature = (?)",
+            signature.to_s do |rs|
+            rs.each do
+              rows << {rs.read(String), rs.read(String)}
+            end
+          end
+          row = rows.max_by?(&.[1].components_similarity(path))
+          id = row[0] if row
+        end
+
+        # At this point, `id` would still be nil if there's no row matching
+        #   either the path or the signature
+
+        # If we did identify a matching title, save the path and signature
+        #   values back to the DB
+        if id && should_update
+          db.exec "update titles set path = (?), signature = (?), " \
+                  "unavailable = 0 where id = (?)", path, signature.to_s, id
+        end
+      end
     end
     id
   end
 
-  def insert_id(tp : IDTuple)
-    @insert_ids << tp
-  end
+  # See the comments in `#get_title_id` to see how this method works.
+  def get_entry_id(path, signature)
+    id = nil
+    path = Path.new(path).relative_to(Config.current.library_path).to_s
+    MainFiber.run do
+      get_db do |db|
+        id = db.query_one? "select id from ids where path = (?) and " \
+                           "signature = (?) and unavailable = 0",
+          path, signature.to_s, as: String
 
-  def bulk_insert_ids
-    get_db do |db|
-      db.transaction do |tx|
-        @insert_ids.each do |tp|
-          tx.connection.exec "insert into ids values (?, ?, ?)", tp[:path],
-            tp[:id], tp[:is_title] ? 1 : 0
+        should_update = id.nil?
+        id ||= db.query_one? "select id from ids where path = (?)", path,
+          as: String
+
+        unless id
+          rows = [] of Tuple(String, String)
+          db.query "select id, path from ids where signature = (?)",
+            signature.to_s do |rs|
+            rs.each do
+              rows << {rs.read(String), rs.read(String)}
+            end
+          end
+          row = rows.max_by?(&.[1].components_similarity(path))
+          id = row[0] if row
+        end
+
+        if id && should_update
+          db.exec "update ids set path = (?), signature = (?), " \
+                  "unavailable = 0 where id = (?)", path, signature.to_s, id
         end
       end
     end
-    @insert_ids.clear
+    id
+  end
+
+  def insert_entry_id(tp)
+    @@insert_entry_ids << tp
+  end
+
+  def insert_title_id(tp)
+    @@insert_title_ids << tp
+  end
+
+  def bulk_insert_ids
+    MainFiber.run do
+      get_db do |db|
+        db.transaction do |tran|
+          conn = tran.connection
+          @@insert_title_ids.each do |tp|
+            path = Path.new(tp[:path])
+              .relative_to(Config.current.library_path).to_s
+            conn.exec "insert into titles (id, path, signature, " \
+                      "unavailable) values (?, ?, ?, 0)",
+              tp[:id], path, tp[:signature].to_s
+          end
+          @@insert_entry_ids.each do |tp|
+            path = Path.new(tp[:path])
+              .relative_to(Config.current.library_path).to_s
+            conn.exec "insert into ids (id, path, signature, " \
+                      "unavailable) values (?, ?, ?, 0)",
+              tp[:id], path, tp[:signature].to_s
+          end
+        end
+      end
+      @@insert_entry_ids.clear
+      @@insert_title_ids.clear
+    end
+  end
+
+  def save_thumbnail(id : String, img : Image)
+    MainFiber.run do
+      get_db do |db|
+        db.exec "insert into thumbnails values (?, ?, ?, ?, ?)", id, img.data,
+          img.filename, img.mime, img.size
+      end
+    end
+  end
+
+  def get_thumbnail(id : String) : Image?
+    img = nil
+    MainFiber.run do
+      get_db do |db|
+        db.query_one? "select * from thumbnails where id = (?)", id do |res|
+          img = Image.from_db res
+        end
+      end
+    end
+    img
+  end
+
+  def get_title_tags(id : String) : Array(String)
+    tags = [] of String
+    MainFiber.run do
+      get_db do |db|
+        db.query "select tag from tags where id = (?) order by tag", id do |rs|
+          rs.each do
+            tags << rs.read String
+          end
+        end
+      end
+    end
+    tags
+  end
+
+  def get_tag_titles(tag : String) : Array(String)
+    tids = [] of String
+    MainFiber.run do
+      get_db do |db|
+        db.query "select id from tags where tag = (?)", tag do |rs|
+          rs.each do
+            tids << rs.read String
+          end
+        end
+      end
+    end
+    tids
+  end
+
+  def list_tags : Array(String)
+    tags = [] of String
+    MainFiber.run do
+      get_db do |db|
+        db.query "select distinct tag from tags natural join titles " \
+                 "where unavailable = 0" do |rs|
+          rs.each do
+            tags << rs.read String
+          end
+        end
+      end
+    end
+    tags
+  end
+
+  def add_tag(id : String, tag : String)
+    err = nil
+    MainFiber.run do
+      begin
+        get_db do |db|
+          db.exec "insert into tags values (?, ?)", id, tag
+        end
+      rescue e
+        err = e
+      end
+    end
+    raise err.not_nil! if err
+  end
+
+  def delete_tag(id : String, tag : String)
+    MainFiber.run do
+      get_db do |db|
+        db.exec "delete from tags where id = (?) and tag = (?)", id, tag
+      end
+    end
+  end
+
+  # Mark titles and entries that no longer exist on the file system as
+  #   unavailable. By supplying `id_candidates` and `titles_candidates`, it
+  #   only checks the existence of the candidate titles/entries to speed up
+  #   the process.
+  def mark_unavailable(ids_candidates : Array(String)?,
+                       titles_candidates : Array(String)?)
+    MainFiber.run do
+      get_db do |db|
+        # Detect dangling entry IDs
+        trash_ids = [] of String
+        query = "select path, id from ids where unavailable = 0"
+        unless ids_candidates.nil?
+          query += " and id in (#{ids_candidates.join "," { |i| "'#{i}'" }})"
+        end
+        db.query query do |rs|
+          rs.each do
+            path = rs.read String
+            fullpath = Path.new(path).expand(Config.current.library_path).to_s
+            trash_ids << rs.read String unless File.exists? fullpath
+          end
+        end
+
+        unless trash_ids.empty?
+          Logger.debug "Marking #{trash_ids.size} entries as unavailable"
+        end
+        db.exec "update ids set unavailable = 1 where id in " \
+                "(#{trash_ids.join "," { |i| "'#{i}'" }})"
+
+        # Detect dangling title IDs
+        trash_titles = [] of String
+        query = "select path, id from titles where unavailable = 0"
+        unless titles_candidates.nil?
+          query += " and id in (#{titles_candidates.join "," { |i| "'#{i}'" }})"
+        end
+        db.query query do |rs|
+          rs.each do
+            path = rs.read String
+            fullpath = Path.new(path).expand(Config.current.library_path).to_s
+            trash_titles << rs.read String unless Dir.exists? fullpath
+          end
+        end
+
+        unless trash_titles.empty?
+          Logger.debug "Marking #{trash_titles.size} titles as unavailable"
+        end
+        db.exec "update titles set unavailable = 1 where id in " \
+                "(#{trash_titles.join "," { |i| "'#{i}'" }})"
+      end
+    end
+  end
+
+  private def get_missing(tablename)
+    ary = [] of IDTuple
+    MainFiber.run do
+      get_db do |db|
+        db.query "select id, path, signature from #{tablename} " \
+                 "where unavailable = 1" do |rs|
+          rs.each do
+            ary << {
+              id:        rs.read(String),
+              path:      rs.read(String),
+              signature: rs.read(String?),
+            }
+          end
+        end
+      end
+    end
+    ary
+  end
+
+  private def delete_missing(tablename, id : String? = nil)
+    MainFiber.run do
+      get_db do |db|
+        if id
+          db.exec "delete from #{tablename} where id = (?) " \
+                  "and unavailable = 1", id
+        else
+          db.exec "delete from #{tablename} where unavailable = 1"
+        end
+      end
+    end
+  end
+
+  def missing_entries
+    get_missing "ids"
+  end
+
+  def missing_titles
+    get_missing "titles"
+  end
+
+  def delete_missing_entry(id = nil)
+    delete_missing "ids", id
+  end
+
+  def delete_missing_title(id = nil)
+    delete_missing "titles", id
+  end
+
+  def save_md_token(username : String, token : String, expire : Time)
+    MainFiber.run do
+      get_db do |db|
+        count = db.query_one "select count(*) from md_account where " \
+                             "username = (?)", username, as: Int64
+        if count == 0
+          db.exec "insert into md_account values (?, ?, ?)", username, token,
+            expire.to_unix
+        else
+          db.exec "update md_account set token = (?), expire = (?) " \
+                  "where username = (?)", token, expire.to_unix, username
+        end
+      end
+    end
+  end
+
+  def get_md_token(username) : Tuple(String?, Time?)
+    token = nil
+    expires = nil
+    MainFiber.run do
+      get_db do |db|
+        db.query_one? "select token, expire from md_account where " \
+                      "username = (?)", username do |res|
+          token = res.read String
+          expires = Time.unix res.read Int64
+        end
+      end
+    end
+    {token, expires}
   end
 
   def close
-    unless @db.nil?
-      @db.not_nil!.close
+    MainFiber.run do
+      unless @db.nil?
+        @db.not_nil!.close
+      end
     end
   end
 

src/subscription.cr

@@ -0,0 +1,83 @@
+require "db"
+require "json"
+
+struct Subscription
+  include DB::Serializable
+  include JSON::Serializable
+
+  getter id : Int64 = 0
+  getter username : String
+  getter manga_id : Int64
+  property language : String?
+  property group_id : Int64?
+  property min_volume : Int64?
+  property max_volume : Int64?
+  property min_chapter : Int64?
+  property max_chapter : Int64?
+  @[DB::Field(key: "last_checked")]
+  @[JSON::Field(key: "last_checked")]
+  @raw_last_checked : Int64
+  @[DB::Field(key: "created_at")]
+  @[JSON::Field(key: "created_at")]
+  @raw_created_at : Int64
+
+  def last_checked : Time
+    Time.unix @raw_last_checked
+  end
+
+  def created_at : Time
+    Time.unix @raw_created_at
+  end
+
+  def initialize(@manga_id, @username)
+    @raw_created_at = Time.utc.to_unix
+    @raw_last_checked = Time.utc.to_unix
+  end
+
+  private def in_range?(value : String, lowerbound : Int64?,
+                        upperbound : Int64?) : Bool
+    lb = lowerbound.try &.to_f64
+    ub = upperbound.try &.to_f64
+
+    return true if lb.nil? && ub.nil?
+
+    v = value.to_f64?
+    return false unless v
+
+    if lb.nil?
+      v <= ub.not_nil!
+    elsif ub.nil?
+      v >= lb.not_nil!
+    else
+      v >= lb.not_nil! && v <= ub.not_nil!
+    end
+  end
+
+  def match?(chapter : MangaDex::Chapter) : Bool
+    if chapter.manga_id != manga_id ||
+       (language && chapter.language != language) ||
+       (group_id && !chapter.groups.map(&.id).includes? group_id)
+      return false
+    end
+
+    in_range?(chapter.volume, min_volume, max_volume) &&
+      in_range?(chapter.chapter, min_chapter, max_chapter)
+  end
+
+  def check_for_updates : Int32
+    Logger.debug "Checking updates for subscription with ID #{id}"
+    jobs = [] of Queue::Job
+    get_client(username).user.updates_after last_checked do |chapter|
+      next unless match? chapter
+      jobs << chapter.to_job
+    end
+    Storage.default.update_subscription_last_checked id
+    count = Queue.default.push jobs
+    Logger.debug "#{count}/#{jobs.size} of updates added to queue"
+    count
+  rescue e
+    Logger.error "Error occurred when checking updates for " \
+                 "subscription with ID #{id}. #{e}"
+    0
+  end
+end

src/util/chapter_sort.cr

@@ -73,7 +73,7 @@ class ChapterSorter
       .select do |key|
         keys[key].count >= str_ary.size / 2
       end
-      .sort do |a_key, b_key|
+      .sort! do |a_key, b_key|
         a = keys[a_key]
         b = keys[b_key]
         # Sort keys by the number of times they appear

src/util/numeric_sort.cr

@@ -11,7 +11,7 @@ end
 def split_by_alphanumeric(str)
   arr = [] of String
   str.scan(/([^\d\n\r]*)(\d*)([^\d\n\r]*)/) do |match|
-    arr += match.captures.select { |s| s != "" }
+    arr += match.captures.select &.!= ""
   end
   arr
 end

src/util/proxy.cr

@@ -0,0 +1,43 @@
+require "http_proxy"
+
+# Monkey-patch `HTTP::Client` to make it respect the `*_PROXY`
+#   environment variables
+module HTTP
+  class Client
+    private def self.exec(uri : URI, tls : TLSContext = nil)
+      Logger.debug "Setting proxy"
+      previous_def uri, tls do |client, path|
+        client.set_proxy get_proxy uri
+        yield client, path
+      end
+    end
+  end
+end
+
+private def get_proxy(uri : URI) : HTTP::Proxy::Client?
+  no_proxy = ENV["no_proxy"]? || ENV["NO_PROXY"]?
+  return if no_proxy &&
+            no_proxy.split(",").any? &.== uri.hostname
+
+  case uri.scheme
+  when "http"
+    env_to_proxy "http_proxy"
+  when "https"
+    env_to_proxy "https_proxy"
+  else
+    nil
+  end
+end
+
+private def env_to_proxy(key : String) : HTTP::Proxy::Client?
+  val = ENV[key.downcase]? || ENV[key.upcase]?
+  return if val.nil?
+
+  begin
+    uri = URI.parse val
+    HTTP::Proxy::Client.new uri.hostname.not_nil!, uri.port.not_nil!,
+      username: uri.user, password: uri.password
+  rescue
+    nil
+  end
+end

src/util/signature.cr

@@ -0,0 +1,79 @@
+require "./util"
+
+class File
+  abstract struct Info
+    def inode : UInt64
+      @stat.st_ino.to_u64
+    end
+  end
+
+  # Returns the signature of the file at filename.
+  # When it is not a supported file, returns 0. Otherwise, uses the inode
+  #   number as its signature. On most file systems, the inode number is
+  #   preserved even when the file is renamed, moved or edited.
+  # Some cases that would cause the inode number to change:
+  #   - Reboot/remount on some file systems
+  #   - Replaced with a copied file
+  #   - Moved to a different device
+  # Since we are also using the relative paths to match ids, we won't lose
+  #   information as long as the above changes do not happen together with
+  #   a file/folder rename, with no library scan in between.
+  def self.signature(filename) : UInt64
+    if is_supported_file filename
+      File.info(filename).inode
+    else
+      0u64
+    end
+  end
+end
+
+class Dir
+  # Returns the signature of the directory at dirname. See the comments for
+  #   `File.signature` for more information.
+  def self.signature(dirname) : UInt64
+    signatures = [File.info(dirname).inode]
+    self.open dirname do |dir|
+      dir.entries.each do |fn|
+        next if fn.starts_with? "."
+        path = File.join dirname, fn
+        if File.directory? path
+          signatures << Dir.signature path
+        else
+          _sig = File.signature path
+          # Only add its signature value to `signatures` when it is a
+          #   supported file
+          signatures << _sig if _sig > 0
+        end
+      end
+    end
+    Digest::CRC32.checksum(signatures.sort.join).to_u64
+  end
+
+  # Returns the contents signature of the directory at dirname for checking
+  #   to rescan.
+  # Rescan conditions:
+  #   - When a file added, moved, removed, renamed (including which in nested
+  #       directories)
+  def self.contents_signature(dirname, cache = {} of String => String) : String
+    return cache[dirname] if cache[dirname]?
+    Fiber.yield
+    signatures = [] of String
+    self.open dirname do |dir|
+      dir.entries.sort.each do |fn|
+        next if fn.starts_with? "."
+        path = File.join dirname, fn
+        if File.directory? path
+          signatures << Dir.contents_signature path, cache
+        else
+          # Only add its signature value to `signatures` when it is a
+          #   supported file
+          signatures << fn if is_supported_file fn
+        end
+        Fiber.yield
+      end
+    end
+    hash = Digest::SHA1.hexdigest(signatures.join)
+    cache[dirname] = hash
+    hash
+  end
+end

src/util/util.cr

@@ -1,7 +1,8 @@
 IMGS_PER_PAGE            = 5
 ENTRIES_IN_HOME_SECTIONS = 8
 UPLOAD_URL_PREFIX        = "/uploads"
-STATIC_DIRS              = ["/css", "/js", "/img", "/favicon.ico"]
+STATIC_DIRS              = %w(/css /js /img /webfonts /favicon.ico /robots.txt)
+SUPPORTED_FILE_EXTNAMES  = [".zip", ".cbz", ".rar", ".cbr"]
 
 def random_str
   UUID.random.to_s.gsub "-", ""
@@ -22,15 +23,32 @@ end
 
 def register_mime_types
   {
+    # Comic Archives
     ".zip" => "application/zip",
     ".rar" => "application/x-rar-compressed",
     ".cbz" => "application/vnd.comicbook+zip",
     ".cbr" => "application/vnd.comicbook-rar",
+
+    # Favicon
+    ".ico" => "image/x-icon",
+
+    # FontAwesome fonts
+    ".woff"  => "font/woff",
+    ".woff2" => "font/woff2",
+
+    # Supported image formats. JPG, PNG, GIF, WebP, and SVG are already
+    #   defiend by Crystal in `MIME.DEFAULT_TYPES`
+    ".apng" => "image/apng",
+    ".avif" => "image/avif",
   }.each do |k, v|
     MIME.register k, v
   end
 end
 
+def is_supported_file(path)
+  SUPPORTED_FILE_EXTNAMES.includes? File.extname(path).downcase
+end
+
 struct Int
   def or(other : Int)
     if self == 0
@@ -61,3 +79,68 @@ class String
     self.chars.all? { |c| c.alphanumeric? || c == '_' }
   end
 end
+
+def env_is_true?(key : String) : Bool
+  val = ENV[key.upcase]? || ENV[key.downcase]?
+  return false unless val
+  val.downcase.in? "1", "true"
+end
+
+def sort_titles(titles : Array(Title), opt : SortOptions, username : String)
+  ary = titles
+
+  case opt.method
+  when .time_modified?
+    ary.sort! { |a, b| (a.mtime <=> b.mtime).or \
+      compare_numerically a.title, b.title }
+  when .progress?
+    ary.sort! do |a, b|
+      (a.load_percentage(username) <=> b.load_percentage(username)).or \
+        compare_numerically a.title, b.title
+    end
+  else
+    unless opt.method.auto?
+      Logger.warn "Unknown sorting method #{opt.not_nil!.method}. Using " \
+                  "Auto instead"
+    end
+    ary.sort! { |a, b| compare_numerically a.title, b.title }
+  end
+
+  ary.reverse! unless opt.not_nil!.ascend
+
+  ary
+end
+
+class String
+  # Returns the similarity (in [0, 1]) of two paths.
+  # For the two paths, separate them into arrays of components, count the
+  #   number of matching components backwards, and divide the count by the
+  #   number of components of the shorter path.
+  def components_similarity(other : String) : Float64
+    s, l = [self, other]
+      .map { |str| Path.new(str).parts }
+      .sort_by! &.size
+
+    match = s.reverse.zip(l.reverse).count { |a, b| a == b }
+    match / s.size
+  end
+end
+
+# Does the followings:
+#   - turns space-like characters into the normal whitespaces ( )
+#   - strips and collapses spaces
+#   - removes ASCII control characters
+#   - replaces slashes (/) with underscores (_)
+#   - removes leading dots (.)
+#   - removes the following special characters: \:*?"<>|
+#
+# If the sanitized string is empty, returns a random string instead.
+def sanitize_filename(str : String) : String
+  sanitized = str
+    .gsub(/\s+/, " ")
+    .strip
+    .gsub(/\//, "_")
+    .gsub(/^[\.\s]+/, "")
+    .gsub(/[\177\000-\031\\:\*\?\"<>\|]/, "")
+  sanitized.size > 0 ? sanitized : random_str
+end

src/util/validation.cr

@@ -2,9 +2,9 @@ def validate_username(username)
   if username.size < 3
     raise "Username should contain at least 3 characters"
   end
-  if (username =~ /^[A-Za-z0-9_]+$/).nil?
-    raise "Username should contain alphanumeric characters " \
-          "and underscores only"
+  if (username =~ /^[a-zA-Z_][a-zA-Z0-9_\-]*$/).nil?
+    raise "Username can only contain alphanumeric characters, " \
+          "underscores, and hyphens"
   end
 end
 

src/util/web.cr

@@ -1,30 +1,60 @@
 # Web related helper functions/macros
 
+def is_admin?(env) : Bool
+  is_admin = false
+  if !Config.current.auth_proxy_header_name.empty? ||
+     Config.current.disable_login
+    is_admin = Storage.default.username_is_admin get_username env
+  end
+
+  # The token (if exists) takes precedence over other authentication methods.
+  if token = env.session.string? "token"
+    is_admin = Storage.default.verify_admin token
+  end
+
+  is_admin
+end
+
 macro layout(name)
   base_url = Config.current.base_url
+  is_admin = is_admin? env
   begin
-    is_admin = false
-    if token = env.session.string? "token"
-      is_admin = @context.storage.verify_admin token
-    end
     page = {{name}}
     render "src/views/#{{{name}}}.html.ecr", "src/views/layout.html.ecr"
   rescue e
     message = e.to_s
-    @context.error message
+    Logger.error message
+    page = "Error"
     render "src/views/message.html.ecr", "src/views/layout.html.ecr"
   end
 end
 
+macro send_error_page(msg)
+  message = {{msg}}
+  base_url = Config.current.base_url
+  is_admin = is_admin? env
+  page = "Error"
+  html = render "src/views/message.html.ecr", "src/views/layout.html.ecr"
+  send_file env, html.to_slice, "text/html"
+end
+
 macro send_img(env, img)
   send_file {{env}}, {{img}}.data, {{img}}.mime
 end
 
 macro get_username(env)
-  # if the request gets here, it has gone through the auth handler, and
-  #   we can be sure that a valid token exists, so we can use not_nil! here
-  token = env.session.string "token"
-  (@context.storage.verify_token token).not_nil!
+  begin
+    token = env.session.string "token"
+    (Storage.default.verify_token token).not_nil!
+  rescue e
+    if Config.current.disable_login
+      Config.current.default_username
+    elsif (header = Config.current.auth_proxy_header_name) && !header.empty?
+      env.request.headers[header]
+    else
+      raise e
+    end
+  end
 end
 
 def send_json(env, json)
@@ -42,16 +72,11 @@ def redirect(env, path)
 end
 
 def hash_to_query(hash)
-  hash.map { |k, v| "#{k}=#{v}" }.join("&")
+  hash.join "&" { |k, v| "#{k}=#{v}" }
 end
 
 def request_path_startswith(env, ary)
-  ary.each do |prefix|
-    if env.request.path.starts_with? prefix
-      return true
-    end
-  end
-  false
+  ary.any? { |prefix| env.request.path.starts_with? prefix }
 end
 
 def requesting_static_file(env)
@@ -81,3 +106,40 @@ macro get_sort_opt
     sort_opt = SortOptions.new sort_method, is_ascending
   end
 end
+
+macro get_and_save_sort_opt(dir)
+  sort_method = env.params.query["sort"]?
+
+  if sort_method
+    is_ascending = true
+
+    ascend = env.params.query["ascend"]?
+    if ascend && ascend.to_i? == 0
+      is_ascending = false
+    end
+
+    sort_opt = SortOptions.new sort_method, is_ascending
+
+    TitleInfo.new {{dir}} do |info|
+      info.sort_by[username] = sort_opt.to_tuple
+      info.save
+    end
+  end
+end
+
+module HTTP
+  class Client
+    private def self.exec(uri : URI, tls : TLSContext = nil)
+      previous_def uri, tls do |client, path|
+        if client.tls? && env_is_true? "DISABLE_SSL_VERIFICATION"
+          Logger.debug "Disabling SSL verification"
+          client.tls.verify_mode = OpenSSL::SSL::VerifyMode::NONE
+        end
+        Logger.debug "Setting read timeout"
+        client.read_timeout = Config.current.download_timeout_seconds.seconds
+        Logger.debug "Requesting #{uri}"
+        yield client, path
+      end
+    end
+  end
+end

src/views/admin.html.ecr

@@ -1,15 +1,33 @@
-<ul class="uk-list uk-list-large uk-list-divider">
-  <li data-url="<%= base_url %>admin/user">User Managerment</li>
-  <li onclick="if(!scanning){scan()}">
-    <span id="scan">Scan Library Files</span>
-    <span id="scan-status" class="uk-align-right">
-      <div uk-spinner hidden></div>
-      <span hidden></span>
-    </span>
+<ul class="uk-list uk-list-large uk-list-divider" x-data="component()" x-init="init()">
+  <li><a class="uk-link-reset" href="<%= base_url %>admin/user">User Management</a></li>
+  <li>
+    <a class="uk-link-reset" href="<%= base_url %>admin/missing">Missing Items</a>
+    <% if missing_count > 0 %>
+      <div class="uk-align-right">
+        <span class="uk-badge"><%= missing_count %></span>
+      </div>
+    <% end %>
   </li>
-  <li class="nopointer">
+  <li>
+    <a class="uk-link-reset" @click="scan()">
+      <span :style="`${scanning ? 'color:grey' : ''}`">Scan Library Files</span>
+      <div class="uk-align-right">
+        <div uk-spinner x-show="scanning"></div>
+        <span x-show="!scanning && scanMs > 0" x-text="`Scan ${scanTitles} titles in ${scanMs}ms`"></span>
+      </div>
+    </a>
+  </li>
+  <li>
+    <a class="uk-link-reset" @click="generateThumbnails()">
+      <span :style="`${generating ? 'color:grey' : ''}`">Generate Thumbnails</span>
+      <div class="uk-align-right">
+        <span x-show="generating && progress > 0" x-text="`${(progress * 100).toFixed(2)}%`"></span>
+      </div>
+    </a>
+  </li>
+  <li>
     <span>Theme</span>
-    <select id="theme-select" class="uk-select uk-align-right uk-width-1-3@m uk-width-1-2">
+    <select id="theme-select" class="uk-select uk-align-right uk-width-1-3@m uk-width-1-2" :value="themeSetting" @change="themeChanged($event)">
       <option>Dark</option>
       <option>Light</option>
       <option>System</option>

src/views/api.html.ecr

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="X-UA-Compatible" content="IE=edge">
+    <title>Mango API Documentation</title>
+    <meta name="description" content="Mango - Manga Server and Web Reader">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+  </head>
+  <body>
+    <redoc spec-url="<%= base_url %>openapi.json"></redoc>
+    <script src="https://cdn.jsdelivr.net/npm/redoc/bundles/redoc.standalone.js"></script>
+  </body>
+</html>

src/views/components/card.html.ecr

@@ -35,7 +35,7 @@
       onclick="location='<%= base_url %>book/<%= item.id %>'" 
     <% end %>>
 
-    <div class="uk-card uk-card-default" x-data="{selected: false, hover: false, disabled: true}" :class="{selected: selected}"
+    <div class="uk-card uk-card-default" x-data="{selected: false, hover: false, disabled: true, selecting: false}" :class="{selected: selected}" @count.window="selecting = $event.detail.count > 0"
       <% if page == "title" && item.is_a?(Entry) && item.err_msg.nil? %>
         x-init="disabled = false"
       <% end %>>
@@ -45,6 +45,7 @@
           class="grayscale"
         <% end %>>
         <div class="uk-overlay-primary uk-position-cover" x-show="!disabled && (selected || hover)">
+          <div class="uk-height-1-1 uk-width-1-1" x-show="selecting" @click.stop="selected = !selected; $dispatch(selected ? 'add' : 'remove')"></div>
           <div class="uk-position-center">
             <span class="fas fa-check-circle fa-3x" @click.stop="selected = !selected; $dispatch(selected ? 'add' : 'remove')" :style="`color:${selected && 'orange'};`"></span>
           </div>
@@ -75,7 +76,7 @@
         <% end %>
         <% if item.is_a? Title %>
           <% if grouped_count == 1 %>
-            <p class="uk-text-meta"><%= item.size %> entries</p>
+            <p class="uk-text-meta"><%= item.content_label %></p>
           <% else %>
             <p class="uk-text-meta"><%= grouped_count %> new entries</p>
           <% end %>

src/views/components/dots.html.ecr

@@ -0,0 +1,3 @@
+<script src="https://cdnjs.cloudflare.com/ajax/libs/jQuery.dotdotdot/4.0.11/dotdotdot.js"></script> 
+<script src="https://cdnjs.cloudflare.com/ajax/libs/protonet-jquery.inview/1.1.2/jquery.inview.min.js"></script> 
+<script src="<%= base_url %>js/dots.js"></script>

src/views/components/head.html.ecr

@@ -1,15 +1,15 @@
 <head>
   <meta charset="utf-8">
   <meta name="X-UA-Compatible" content="IE=edge">
-  <title>Mango</title>
+  <title>Mango - <%= page.split("-").map(&.capitalize).join(" ") %></title>
   <meta name="description" content="Mango - Manga Server and Web Reader">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <link rel="stylesheet" href="<%= base_url %>css/uikit.css" />
   <link rel="stylesheet" href="<%= base_url %>css/mango.css" />
   <link rel="icon" href="<%= base_url %>favicon.ico">
-  <script defer src="<%= base_url %>js/fontawesome.min.js"></script>
-  <script defer src="<%= base_url %>js/solid.min.js"></script>
+
+  <script src="https://polyfill.io/v3/polyfill.min.js?features=MutationObserver%2Cdefault%2CmatchMedia&flats=gated"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
-  <script src="https://cdn.jsdelivr.net/gh/alpinejs/alpine@v2.5.0/dist/alpine.min.js" defer></script>
-  <script src="<%= base_url %>js/theme.js"></script>
+  <script type="module" src="https://cdn.jsdelivr.net/gh/alpinejs/alpine@v2.8.0/dist/alpine.min.js"></script>
+  <script nomodule src="https://cdn.jsdelivr.net/gh/alpinejs/alpine@v2.8.0/dist/alpine-ie11.min.js" defer></script>
+  <script src="<%= base_url %>js/common.js"></script>
 </head>

src/views/components/jquery-ui.html.ecr

@@ -0,0 +1 @@
+<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>

src/views/components/moment.html.ecr

@@ -0,0 +1 @@
+<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>

src/views/components/uikit.html.ecr

@@ -0,0 +1,2 @@
+<script src="https://cdn.jsdelivr.net/npm/uikit@3.5.9/dist/js/uikit.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/uikit@3.5.9/dist/js/uikit-icons.min.js"></script>

src/views/download-manager.html.ecr

@@ -1,33 +1,69 @@
-<div class="uk-margin">
-  <div id="actions" class="uk-margin">
-    <button class="uk-button uk-button-default" onclick="remove()">Delete Completed Tasks</button>
-    <button class="uk-button uk-button-default" onclick="refresh()">Retry Failed Tasks</button>
-    <button class="uk-button uk-button-default" onclick="load()">Refresh Queue</button>
-    <button class="uk-button uk-button-default" onclick="toggle()" id="pause-resume-btn" hidden></button>
-  </div>
-  <div id="config" class="uk-margin">
-    <label><input id="auto-refresh" class="uk-checkbox" type="checkbox" checked> Auto Refresh</label>
+<div x-data="component()" x-init="init()">
+  <div class="uk-margin">
+    <button class="uk-button uk-button-default" @click="jobAction('delete')">Delete Completed Tasks</button>
+    <button class="uk-button uk-button-default" @click="jobAction('retry')">Retry Failed Tasks</button>
+    <button class="uk-button uk-button-default" @click="load()" :disabled="loading">Refresh Queue</button>
+    <button class="uk-button uk-button-default" x-show="paused !== undefined" x-text="paused ? 'Resume Download' : 'Pause Download'" @click="toggle()" :disabled="toggling"></button>
   </div>
+  <table class="uk-table uk-table-striped uk-overflow-auto">
+    <thead>
+      <tr>
+        <th>Chapter</th>
+        <th>Manga</th>
+        <th>Progress</th>
+        <th>Time</th>
+        <th>Status</th>
+        <th>Plugin</th>
+        <th>Actions</th>
+      </tr>
+    </thead>
+    <tbody>
+      <template x-for="job in jobs" :key="job">
+        <tr :id="`chapter-${job.id}`">
+
+          <template x-if="job.plugin_id">
+            <td x-text="job.title"></td>
+          </template>
+          <template x-if="!job.plugin_id">
+            <td><a :href="`<%= mangadex_base_url %>/chapter/${job.id}`" x-text="job.title"></td>
+          </template>
+
+          <template x-if="job.plugin_id">
+            <td x-text="job.manga_title"></td>
+          </template>
+          <template x-if="!job.plugin_id">
+            <td><a :href="`<%= mangadex_base_url %>/manga/${job.manga_id}`" x-text="job.manga_title"></td>
+          </template>
+
+          <td x-text="`${job.success_count}/${job.pages}`"></td>
+          <td x-text="`${moment(job.time).fromNow()}`"></td>
+
+          <td>
+            <span :class="statusClass(job.status)" x-text="job.status"></span>
+            <template x-if="job.status_message.length > 0">
+              <div class="uk-inline">
+                <span uk-icon="info"></span>
+                <div uk-dropdown x-text="job.status_message" style="white-space: pre-line;"></div>
+              </div>
+            </template>
+          </td>
+
+          <td x-text="`${job.plugin_id || ''}`"></td>
+          <td>
+            <a @click="jobAction('delete', $event)" uk-icon="trash" uk-tooltip="Delete"></a>
+            <template x-if="job.status_message.length > 0">
+              <a @click="jobAction('retry', $event)" uk-icon="refresh" uk-tooltip="Retry"></a>
+            </template>
+          </td>
+        </tr>
+      </template>
+    </tbody>
+  </table>
+</div>
 </div>
-<table class="uk-table uk-table-striped uk-overflow-auto">
-  <thead>
-    <tr>
-      <th>Chapter</th>
-      <th>Manga</th>
-      <th>Progress</th>
-      <th>Time</th>
-      <th>Status</th>
-      <th>Plugin</th>
-      <th>Actions</th>
-    </tr>
-  </thead>
-</table>
 
 <% content_for "script" do %>
-  <script>
-    var baseURL = "<%= mangadex_base_url %>".replace(/\/$/, "");
-  </script>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
+  <%= render_component "moment" %>
   <script src="<%= base_url %>js/alert.js"></script>
   <script src="<%= base_url %>js/download-manager.js"></script>
 <% end %>

src/views/download.html.ecr

@@ -1,83 +1,162 @@
 <h2 class=uk-title>Download from MangaDex</h2>
-<div class="uk-grid-small" uk-grid>
-  <div class="uk-width-3-4">
-    <input id="search-input" class="uk-input" type="text" placeholder="MangaDex manga ID or URL">
+<div x-data="downloadComponent()" x-init="init()">
+  <div class="uk-grid-small" uk-grid style="margin-bottom:40px;">
+    <div class="uk-width-expand">
+      <input class="uk-input" type="text" :placeholder="searchAvailable ? 'Search MangaDex or enter a manga ID/URL' : 'MangaDex manga ID or URL'" x-model="searchInput" @keydown.enter.debounce="search()">
+    </div>
+    <div class="uk-width-auto">
+      <div uk-spinner class="uk-align-center" x-show="loading" x-cloak></div>
+      <button class="uk-button uk-button-default" x-show="!loading" @click="search()">Search</button>
+    </div>
   </div>
-  <div class="uk-width-1-4">
-    <div id="spinner" uk-spinner class="uk-align-center" hidden></div>
-    <button id="search-btn" class="uk-button uk-button-default" onclick="search()">Search</button>
-  </div>
-</div>
-<div class"uk-grid-small" uk-grid hidden id="manga-details">
-  <div class="uk-width-1-4@s">
-    <img id="cover">
-  </div>
-  <div class="uk-width-1-4@s">
-    <p id="title"></p>
-    <p id="artist"></p>
-    <p id="author"></p>
-  </div>
-  <div id="filter-form" class="uk-form-stacked uk-width-1-2@s" hidden>
-    <p class="uk-text-lead uk-margin-remove-bottom">Filter Chapters</p>
-    <p class="uk-text-meta uk-margin-remove-top" id="count-text"></p>
-    <div class="uk-margin">
-      <label class="uk-form-label" for="lang-select">Language</label>
-      <div class="uk-form-controls">
-        <select class="uk-select filter-field" id="lang-select">
-        </select>
+
+  <template x-if="mangaAry">
+    <div>
+      <p x-show="mangaAry.length === 0">No matching manga found.</p>
+
+      <div class="uk-child-width-1-4@m uk-child-width-1-2" uk-grid>
+        <template x-for="manga in mangaAry" :key="manga.id">
+          <div class="item" :data-id="manga.id" @click="chooseManga(manga)">
+            <div class="uk-card uk-card-default">
+              <div class="uk-card-media-top uk-inline">
+                <img uk-img :data-src="manga.mainCover">
+              </div>
+              <div class="uk-card-body">
+                <h3 class="uk-card-title break-word uk-margin-remove-bottom free-height" x-text="manga.title"></h3>
+                <p class="uk-text-meta" x-text="`ID: ${manga.id}`"></p>
+              </div>
+            </div>
+          </div>
+        </template>
       </div>
     </div>
-    <div class="uk-margin">
-      <label class="uk-form-label" for="group-select">Group</label>
-      <div class="uk-form-controls">
-        <select class="uk-select filter-field" id="group-select">
-        </select>
+  </template>
+
+  <div x-show="data && data.chapters" x-cloak>
+    <div class"uk-grid-small" uk-grid>
+      <div class="uk-width-1-4@s">
+        <img :src="data.mainCover">
+      </div>
+      <div class="uk-width-1-4@s">
+        <p>Title: <a :href="`<%= mangadex_base_url %>/manga/${data.id}`" x-text="data.title"></a></p>
+        <p x-text="`Artist: ${data.artist}`"></p>
+        <p x-text="`Author: ${data.author}`"></p>
+      </div>
+      <div class="uk-form-stacked uk-width-1-2@s" id="filters">
+        <p class="uk-text-lead uk-margin-remove-bottom">Filter Chapters</p>
+        <p class="uk-text-meta uk-margin-remove-top" x-text="`${chapters.length} chapters found`"></p>
+        <div class="uk-margin">
+          <label class="uk-form-label">Language</label>
+          <div class="uk-form-controls">
+            <select class="uk-select filter-field" x-model="langChoice" @change="filtersUpdated()">
+              <template x-for="lang in languages" :key="lang">
+                <option x-text="lang"></option>
+              </template>
+            </select>
+          </div>
+        </div>
+
+        <div class="uk-margin">
+          <label class="uk-form-label">Group</label>
+          <div class="uk-form-controls">
+            <select class="uk-select filter-field" x-model="groupChoice" @change="filtersUpdated()">
+              <template x-for="group in groups" :key="group">
+                <option x-text="group"></option>
+              </template>
+            </select>
+          </div>
+        </div>
+
+        <div class="uk-margin">
+          <label class="uk-form-label">Volume</label>
+          <div class="uk-form-controls">
+            <input class="uk-input filter-field" type="text" placeholder="e.g., 127, 10-14, >30, <=212, or leave it empty." x-model="volumeRange" @keydown.enter="filtersUpdated()">
+          </div>
+        </div>
+
+        <div class="uk-margin">
+          <label class="uk-form-label">Chapter</label>
+          <div class="uk-form-controls">
+            <input class="uk-input filter-field" type="text" placeholder="e.g., 127, 10-14, >30, <=212, or leave it empty." x-model="chapterRange" @keydown.enter="filtersUpdated()">
+          </div>
+        </div>
       </div>
     </div>
+
     <div class="uk-margin">
-      <label class="uk-form-label" for="volume-range">Volume</label>
-      <div class="uk-form-controls">
-        <input class="uk-input filter-field" type="text" id="volume-range" placeholder="e.g., 127, 10-14, >30, <=212, or leave it empty.">
+      <div class="uk-margin">
+        <button class="uk-button uk-button-default" @click="selectAll()">Select All</button>
+        <button class="uk-button uk-button-default" @click="clearSelection()">Clear Selections</button>
+        <button class="uk-button uk-button-primary" @click="download()" x-show="!addingToDownload">Download Selected</button>
+        <div uk-spinner class="uk-margin-left" x-show="addingToDownload"></div>
       </div>
+      <p class="uk-text-meta">Click on a table row to select the chapter. Drag your mouse over multiple rows to select them all. Hold Ctrl to make multiple non-adjacent selections.</p>
     </div>
-    <div class="uk-margin">
-      <label class="uk-form-label" for="chapter-range">Chapter</label>
-      <div class="uk-form-controls">
-        <input class="uk-input filter-field" type="text" id="chapter-range" placeholder="e.g., 127, 10-14, >30, <=212, or leave it empty.">
+    <p x-text="`Mango can only list ${chaptersLimit} chapters, but we found ${chapters.length} chapters. Please use the filter options above to narrow down your search.`" x-show="chapters.length > chaptersLimit"></p>
+    <table class="uk-table uk-table-striped uk-overflow-auto" x-show="chapters.length <= chaptersLimit">
+      <thead>
+        <tr>
+          <th>ID</th>
+          <th>Title</th>
+          <th>Language</th>
+          <th>Group</th>
+          <th>Volume</th>
+          <th>Chapter</th>
+          <th>Timestamp</th>
+        </tr>
+      </thead>
+
+      <template x-if="chapters.length <= chaptersLimit">
+        <tbody id="selectable">
+          <template x-for="chp in chapters" :key="chp">
+            <tr class="ui-widget-content">
+              <td><a :href="`<%= mangadex_base_url %>/chapter/${chp.id}`" x-text="chp.id"></a></td>
+              <td x-text="chp.title"></td>
+              <td x-text="chp.language"></td>
+              <td>
+                <template x-for="grp in Object.entries(chp.groups)">
+                  <div>
+                    <a :href="`<%= mangadex_base_url %>/group/${grp[1]}`" x-text="grp[0]"></a>
+                  </div>
+                </template>
+              </td>
+              <td x-text="chp.volume"></td>
+              <td x-text="chp.chapter"></td>
+              <td x-text="`${moment.unix(chp.timestamp).fromNow()}`"></td>
+            </tr>
+          </template>
+        </tbody>
+      </template>
+    </table>
+  </div>
+
+  <div id="modal" class="uk-flex-top" uk-modal="container: false">
+    <div class="uk-modal-dialog uk-margin-auto-vertical">
+      <button class="uk-modal-close-default" type="button" uk-close></button>
+      <div class="uk-modal-header">
+        <h3 class="uk-modal-title break-word" x-text="candidateManga.title"></h3>
+      </div>
+      <div class="uk-modal-body">
+        <div class="uk-grid">
+          <div class="uk-width-1-3@s">
+            <img uk-img data-width data-height :src="candidateManga.mainCover" style="width:100%;margin-bottom:10px;">
+            <a :href="`<%= mangadex_base_url %>/manga/${candidateManga.id}`" x-text="`ID: ${candidateManga.id}`" class="uk-link-muted"></a>
+          </div>
+          <div class="uk-width-2-3@s" uk-overflow-auto>
+            <p x-text="candidateManga.description"></p>
+          </div>
+        </div>
+      </div>
+      <div class="uk-modal-footer">
+        <button class="uk-button uk-button-primary" type="button" @click="confirmManga(candidateManga.id)">Choose</button>
       </div>
     </div>
   </div>
 </div>
-<div id="selection-controls" class="uk-margin" hidden>
-  <div class="uk-margin">
-    <button class="uk-button uk-button-default" onclick="selectAll()">Select All</button>
-    <button class="uk-button uk-button-default" onclick="unselect()">Clear Selections</button>
-    <button class="uk-button uk-button-primary" id="download-btn" onclick="download()">Download Selected</button>
-    <div id="download-spinner" uk-spinner class="uk-margin-left" hidden></div>
-  </div>
-  <p class="uk-text-meta">Click on a table row to select the chapter. Drag your mouse over multiple rows to select them all. Hold Ctrl to make multiple non-adjacent selections.</p>
-</div>
-<p id="filter-notification" hidden></p>
-<table class="uk-table uk-table-striped uk-overflow-auto" hidden>
-  <thead>
-    <tr>
-      <th>ID</th>
-      <th>Title</th>
-      <th>Language</th>
-      <th>Group</th>
-      <th>Volume</th>
-      <th>Chapter</th>
-      <th>Timestamp</th>
-    </tr>
-  </thead>
-</table>
 
 <% content_for "script" do %>
-  <script>
-    var baseURL = "<%= mangadex_base_url %>".replace(/\/$/, "");
-  </script>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
+  <%= render_component "moment" %>
+  <%= render_component "jquery-ui" %>
   <script src="<%= base_url %>js/alert.js"></script>
   <script src="<%= base_url %>js/download.js"></script>
 <% end %>

src/views/home.html.ecr

@@ -11,7 +11,7 @@
       <dd>Update <code>config.yml</code> located at: <code><%= Config.current.path %></code></dd>
       <dt style="font-weight: 500;">Can't see your files yet?</dt>
       <dd>
-      You must wait <%= Config.current.scan_interval %> minutes for the library scan to complete
+      You must wait <%= Config.current.scan_interval_minutes %> minutes for the library scan to complete
       <% if is_admin %>
         , or manually re-scan from <a href="<%= base_url %>admin">Admin</a>
       <% end %>.
@@ -77,8 +77,7 @@
 <%- end -%>
 
 <% content_for "script" do %>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/jQuery.dotdotdot/4.0.11/dotdotdot.js"></script>
-  <script src="<%= base_url %>js/dots.js"></script>
+  <%= render_component "dots" %>
   <script src="<%= base_url %>js/alert.js"></script>
   <script src="<%= base_url %>js/title.js"></script>
 <% end %>

src/views/layout.html.ecr

@@ -11,12 +11,12 @@
             <ul class="uk-nav-parent-icon uk-nav-primary uk-nav-center uk-margin-auto-vertical" uk-nav>
               <li><a href="<%= base_url %>">Home</a></li>
               <li><a href="<%= base_url %>library">Library</a></li>
+              <li><a href="<%= base_url %>tags">Tags</a></li>
               <% if is_admin %>
                 <li><a href="<%= base_url %>admin">Admin</a></li>
                 <li class="uk-parent">
                   <a href="#">Download</a>
                   <ul class="uk-nav-sub">
-                    <li><a href="<%= base_url %>download">MangaDex</a></li>
                     <li><a href="<%= base_url %>download/plugins">Plugins</a></li>
                     <li><a href="<%= base_url %>admin/downloads">Download Manager</a></li>
                   </ul>
@@ -36,10 +36,11 @@
           <div class="uk-navbar-toggle" uk-navbar-toggle-icon="uk-navbar-toggle-icon" uk-toggle="target: #mobile-nav"></div>
         </div>
         <div class="uk-navbar-left uk-visible@s">
-          <a class="uk-navbar-item uk-logo" href="<%= base_url %>"><img src="<%= base_url %>img/icon.png"></a>
+          <a class="uk-navbar-item uk-logo" href="<%= base_url %>"><img src="<%= base_url %>img/icon.png" style="width:90px;height:90px;"></a>
           <ul class="uk-navbar-nav">
             <li><a href="<%= base_url %>">Home</a></li>
             <li><a href="<%= base_url %>library">Library</a></li>
+            <li><a href="<%= base_url %>tags">Tags</a></li>
             <% if is_admin %>
               <li><a href="<%= base_url %>admin">Admin</a></li>
               <li>
@@ -47,7 +48,6 @@
                 <div class="uk-navbar-dropdown">
                   <ul class="uk-nav uk-navbar-dropdown-nav">
                     <li class="uk-nav-header">Source</li>
-                    <li><a href="<%= base_url %>download">MangaDex</a></li>
                     <li><a href="<%= base_url %>download/plugins">Plugins</a></li>
                     <li class="uk-nav-divider"></li>
                     <li><a href="<%= base_url %>admin/downloads">Download Manager</a></li>
@@ -67,19 +67,20 @@
     </div>
     <div class="uk-section uk-section-small">
     </div>
-    <div class="uk-section uk-section-small">
+    <div class="uk-section uk-section-small" style="position:relative;">
       <div class="uk-container uk-container-small">
         <div id="alert"></div>
         <%= content %>
+        <div class="uk-visible@m" id="totop-wrapper" x-data="{}" x-show="$('body').height() > 1.5 * $(window).height()">
+          <a href="#" uk-totop uk-scroll></a>
+        </div>
       </div>
     </div>
     <script>
       setTheme();
       const base_url = "<%= base_url %>";
     </script>
-    <script src="<%= base_url %>js/uikit.min.js"></script>
-    <script src="<%= base_url %>js/uikit-icons.min.js"></script>
-
+    <%= render_component "uikit" %>
     <%= yield_content "script" %>
   </body>
 

src/views/library.html.ecr

@@ -24,8 +24,7 @@
 </div>
 
 <% content_for "script" do %>
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/jQuery.dotdotdot/4.0.11/dotdotdot.js"></script>
-  <script src="<%= base_url %>js/dots.js"></script>
+  <%= render_component "dots" %>
   <script src="<%= base_url %>js/search.js"></script>
   <script src="<%= base_url %>js/sort-items.js"></script>
 <% end %>

src/views/login.html.ecr

@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html>
 
+  <% page = "Login" %>
   <%= render_component "head" %>
 
   <body>
@@ -29,8 +30,7 @@
     <script>
       setTheme();
     </script>
-    <script src="<%= base_url %>js/uikit.min.js"></script>
-    <script src="<%= base_url %>js/uikit-icons.min.js"></script>
+    <%= render_component "uikit" %>
   </body>
 
 </html>

src/views/mangadex.html.ecr

@@ -0,0 +1,39 @@
+<div x-data="component()" x-init="init()">
+  <h2 class="uk-title">Connect to MangaDex</h2>
+  <div class"uk-grid-small" uk-grid x-show="!loading" x-cloak>
+    <div class="uk-width-1-2@s" x-show="!expires">
+      <p>This step is optional but highly recommended if you are using the MangaDex downloader. Connecting to MangaDex allows you to:</p>
+      <ul>
+        <li>Search MangaDex by search terms in addition to manga IDs</li>
+        <li>Automatically download new chapters when they are available (coming soon)</li>
+      </ul>
+    </div>
+
+    <div class="uk-width-1-2@s" x-show="expires">
+      <p>
+      <span x-show="!expired">You have logged in to MangaDex!</span>
+      <span x-show="expired">You have logged in to MangaDex but the token has expired.</span>
+      The expiration date of your token is <code x-text="moment.unix(expires).format('MMMM Do YYYY, HH:mm:ss')"></code>. 
+      <span x-show="!expired">If the integration is not working, you</span>
+      <span x-show="expired">You</span>
+      can log in again and the token will be updated.
+      </p>
+    </div>
+
+    <div class="uk-width-1-2@s">
+      <div class="uk-margin">
+        <div class="uk-inline uk-width-1-1"><span class="uk-form-icon" uk-icon="icon:user"></span><input class="uk-input uk-form-large" type="text" x-model="username" @keydown.enter.debounce="login()"></div>
+      </div>
+      <div class="uk-margin">
+        <div class="uk-inline uk-width-1-1"><span class="uk-form-icon" uk-icon="icon:lock"></span><input class="uk-input uk-form-large" type="password" x-model="password" @keydown.enter.debounce="login()"></div>
+      </div>
+      <div class="uk-margin"><button class="uk-button uk-button-primary uk-button-large uk-width-1-1" @click="login()" :disabled="loggingIn">Login to MangaDex</button></div>
+    </div>
+  </div>
+</div>
+
+<% content_for "script" do %>
+  <%= render_component "moment" %>
+  <script src="<%= base_url %>js/alert.js"></script>
+  <script src="<%= base_url %>js/mangadex.js"></script>
+<% end %>