Move relevant methods from Title to Entry

src/routes/api.cr

@@ -80,7 +80,7 @@ class APIRouter < Router
         if !entry_id.nil?
           entry = title.get_entry(entry_id).not_nil!
           raise "incorrect page value" if page < 0 || page > entry.pages
-          title.save_progress username, entry.title, page
+          entry.save_progress username, page
         elsif page == 0
           title.unread_all username
         else

src/routes/main.cr

@@ -53,9 +53,7 @@ class MainRouter < Router
       begin
         title = (@context.library.get_title env.params.url["title"]).not_nil!
         username = get_username env
-        percentage = title.entries.map { |e|
-          title.load_percentage username, e.title
-        }
+        percentage = title.entries.map &.load_percentage username
         title_percentage = title.titles.map &.load_percentage username
         layout "title"
       rescue e

src/routes/reader.cr

@@ -9,7 +9,7 @@ class ReaderRouter < Router
 
         # load progress
         username = get_username env
-        page = title.load_progress username, entry.title
+        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
@@ -33,7 +33,7 @@ class ReaderRouter < Router
 
         # save progress
         username = get_username env
-        title.save_progress username, entry.title, page
+        entry.save_progress username, page
 
         pages = (page...[entry.pages + 1, page + IMGS_PER_PAGE].min)
         urls = pages.map { |idx|
@@ -45,7 +45,7 @@ class ReaderRouter < Router
         next_page = page + IMGS_PER_PAGE
         next_url = next_entry_url = nil
         exit_url = "#{base_url}book/#{title.id}"
-        next_entry = title.next_entry entry
+        next_entry = entry.next_entry
         unless next_page > entry.pages
           next_url = "#{base_url}reader/#{title.id}/#{entry.id}/#{next_page}"
         end