From f4346f4c79816d3acb2b2598fe3db0eb7c1c689c Mon Sep 17 00:00:00 2001
From: alger <algerkc@qq.com>
Date: Sun, 5 Jul 2026 14:09:51 +0800
Subject: [PATCH] =?UTF-8?q?fix(player):=20=E7=A7=81=E4=BA=BA=20FM=20?=
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_prevPlay 补充 FM 分支：FM 不支持回到上一首，与下一曲行为一致直接拉取新的 FM 歌曲。
此前 FM 列表只有一首歌，上一曲计算出的索引仍是当前曲目导致原地重放。

Closes #682
---
 src/renderer/store/modules/playlist.ts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/renderer/store/modules/playlist.ts b/src/renderer/store/modules/playlist.ts
index d66e3c3..fc4938e 100644
--- a/src/renderer/store/modules/playlist.ts
+++ b/src/renderer/store/modules/playlist.ts
@@ -543,10 +543,19 @@ export const usePlaylistStore = defineStore(
 
     const _prevPlay = async () => {
       try {
+        const playerCore = usePlayerCoreStore();
+
+        // 私人FM模式：FM 不支持回到上一首，与下一曲一致直接拉取新的 FM 歌曲（#682）
+        if (playerCore.isFmPlaying) {
+          cancelRetryTimer();
+          consecutiveFailCount.value = 0;
+          await _nextFmPlay();
+          return;
+        }
+
         if (playList.value.length === 0) return;
 
         cancelRetryTimer();
-        const playerCore = usePlayerCoreStore();
         const nowPlayListIndex =
           (playListIndex.value - 1 + playList.value.length) % playList.value.length;
         const prevSong = { ...playList.value[nowPlayListIndex] };