Clean up download ahead logic

- Remove redundant chapter sorting logic when fetching next chapter(s) - Remove redundant download queue checks (it'll handle already queued or downloaded items) - Trigger download ahead when read >= 25% of chapter rather than 20% - Rely on download cache when checking if next chapter is downloaded to avoid jank (fixes #8328)
2022-10-30 16:59:33 -04:00
parent 725fcbba0e
commit fc184f1cfa
10 changed files with 79 additions and 108 deletions
@@ -244,6 +244,10 @@ class Downloader(
     * @param autoStart whether to start the downloader after enqueing the chapters.
     */
    fun queueChapters(manga: Manga, chapters: List<Chapter>, autoStart: Boolean) = launchIO {
+        if (chapters.isEmpty()) {
+            return@launchIO
+        }
+
        val source = sourceManager.get(manga.source) as? HttpSource ?: return@launchIO
        val wasEmpty = queue.isEmpty()
        // Called in background thread, the operation can be slow with SAF.