From 0edec685f9d96eb0cdf94d6e176b730fc743fb65 Mon Sep 17 00:00:00 2001
From: schroda <50052685+schroda@users.noreply.github.com>
Date: Tue, 13 Feb 2024 01:53:49 +0100
Subject: [PATCH] Correctly select next chapter id for download ahead (#596)

Chapters are being fetched sorted by descending source order, thus, the next chapters index is less than the current one

Regression introduced with 7caea4e5262ecbd42a06a37de57623a2cafa9b61
---
 src/screens/Reader.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/screens/Reader.tsx b/src/screens/Reader.tsx
index c7f1d76b..94213b70 100644
--- a/src/screens/Reader.tsx
+++ b/src/screens/Reader.tsx
@@ -224,7 +224,7 @@ export function Reader() {
         };
 
         const currentChapter = getChapterFromCache(chapter.id);
-        const nextChapterId = mangaChapters?.[Number(chapterIndex) + 1]?.id;
+        const nextChapterId = mangaChapters?.[(mangaChapters?.length ?? 0) - Number(chapterIndex) - 1]?.id;
         const nextChapter = nextChapterId ? getChapterFromCache(nextChapterId) : null;
 
         const shouldDownloadAhead =