From 611578313e0dd3317a3dee683fbca97f69238444 Mon Sep 17 00:00:00 2001
From: AntsyLich <59261191+AntsyLich@users.noreply.github.com>
Date: Sat, 10 Oct 2026 20:19:06 +0600
Subject: [PATCH] Index a finished download found on disk instead of
 downloading it again

---
 .../eu/kanade/tachiyomi/data/download/Downloader.kt    | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt b/app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt
index 5a34f4806..a01a0f966 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt
@@ -393,6 +393,16 @@ class Downloader(
             download.chapter.scanlator,
             download.chapter.url,
         )
+
+        // Being stopped after the download is moved into place but before it's indexed leaves a finished download
+        // on disk that is still queued, and downloading it again would save a second copy next to it
+        if (mangaDir.findFile("$chapterDirname.cbz") != null || mangaDir.findFile(chapterDirname) != null) {
+            mangaDir.findFile(chapterDirname + TMP_DIR_SUFFIX)?.delete()
+            cache.addChapter(chapterDirname, mangaDir, download.manga)
+            download.status = Download.State.DOWNLOADED
+            return
+        }
+
         val tmpDir = mangaDir.createDirectory(chapterDirname + TMP_DIR_SUFFIX)!!
 
         try {