Downloader Rewrite (#437)

* Downloader rewrite
- Rewrite downloader to use coroutines instead of a thread
- Remove unused Page functions
- Add page progress
- Add ProgressResponseBody
- Add support for canceling a download in the middle of downloading
- Fix clear download queue

* Minor fix

* Minor improvements
- notifyAllClients now launches in another thread and only sends new data every second
- Better handling of download queue checker in step()
- Minor improvements and fixes

* Reorder downloads

* Download in parallel by source

* Remove TODO

server/src/main/kotlin/suwayomi/tachidesk/manga/controller/DownloadController.kt

@@ -46,10 +46,8 @@ object DownloadController {
                 description("Start the downloader")
             }
         },
-        behaviorOf = { ctx ->
+        behaviorOf = {
             DownloadManager.start()
-
-            ctx.status(200)
         },
         withResults = {
             httpCode(HttpCode.OK)
@@ -65,9 +63,9 @@ object DownloadController {
             }
         },
         behaviorOf = { ctx ->
-            DownloadManager.stop()
-
-            ctx.status(200)
+            ctx.future(
+                future { DownloadManager.stop() }
+            )
         },
         withResults = {
             httpCode(HttpCode.OK)
@@ -83,9 +81,9 @@ object DownloadController {
             }
         },
         behaviorOf = { ctx ->
-            DownloadManager.clear()
-
-            ctx.status(200)
+            ctx.future(
+                future { DownloadManager.clear() }
+            )
         },
         withResults = {
             httpCode(HttpCode.OK)
@@ -155,4 +153,23 @@ object DownloadController {
             httpCode(HttpCode.OK)
         }
     )
+
+    /** clear download queue */
+    val reorderChapter = handler(
+        pathParam<Int>("chapterIndex"),
+        pathParam<Int>("mangaId"),
+        pathParam<Int>("to"),
+        documentWith = {
+            withOperation {
+                summary("Downloader reorder chapter")
+                description("Reorder chapter in download queue")
+            }
+        },
+        behaviorOf = { _, chapterIndex, mangaId, to ->
+            DownloadManager.reorder(chapterIndex, mangaId, to)
+        },
+        withResults = {
+            httpCode(HttpCode.OK)
+        }
+    )
 }