Subscription manager

src/mangadex/ext.cr

@@ -56,5 +56,39 @@ module MangaDex
       hash["full_title"] = JSON::Any.new full_title
       hash.to_json
     end
+
+    # We don't need to rename the manga title here. It will be renamed in
+    #   src/mangadex/downloader.cr
+    def to_job : Queue::Job
+      Queue::Job.new(
+        id.to_s,
+        manga_id.to_s,
+        full_title,
+        manga_title,
+        Queue::JobStatus::Pending,
+        Time.unix timestamp
+      )
+    end
+  end
+
+  struct User
+    def updates_after(time : Time, &block : Chapter ->)
+      page = 1
+      stopped = false
+      until stopped
+        chapters = followed_updates(page: page).chapters
+        return if chapters.empty?
+        chapters.each do |c|
+          if time > Time.unix c.timestamp
+            stopped = true
+            break
+          end
+          yield c
+        end
+        page += 1
+        # Let's not DDOS MangaDex :)
+        sleep 5.seconds
+      end
+    end
   end
 end