From f28b2d887e794c4d73442f988933d92dedfba3bd Mon Sep 17 00:00:00 2001
From: AntsyLich <59261191+AntsyLich@users.noreply.github.com>
Date: Sat, 10 Oct 2026 12:44:45 +0600
Subject: [PATCH] Cancel queued downloads of chapters the source removed
 (#3845)

Closes #3845
Fixes #3811
Fixes #3501

Co-authored-by: Joseph <50675784+JoJoKorok@users.noreply.github.com>
---
 .../domain/chapter/interactor/SyncChaptersWithSource.kt      | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt b/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt
index cd5486bd5..85dc9c352 100644
--- a/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt
+++ b/app/src/main/java/eu/kanade/domain/chapter/interactor/SyncChaptersWithSource.kt
@@ -142,6 +142,11 @@ class SyncChaptersWithSource(
 
         val removedChapters = dbChapters.filterNot { it.url in sourceUrls }
 
+        // The source no longer lists these, so their queued downloads could only fail
+        removedChapters.mapNotNull { downloadManager.getQueuedDownloadOrNull(it.id) }
+            .takeIf { it.isNotEmpty() }
+            ?.let(downloadManager::cancelQueuedDownloads)
+
         // Return if there's nothing to add, delete, or update to avoid unnecessary db transactions.
         if (newChapters.isEmpty() && removedChapters.isEmpty() && updatedChapters.isEmpty()) {
             if (manualFetch || manga.fetchInterval == 0 || manga.nextUpdate < fetchWindow.first) {