refactor(音乐同步): 优化歌曲匹配逻辑，优先使用提供的songId

当songId存在时，跳过冗余的网易云匹配流程，直接使用songId进行精确匹配
如果精确匹配失败，再回退到基于名称的匹配方式

backend/src/handler/sync_jobs.js

@@ -93,21 +93,15 @@ async function createJob(req, res) {
         }
 
         if (songId) {
-            const songFromWyCloud = await findTheBestMatchFromWyCloud(req.account.uid, {
+            // 直接传递songId给后续处理，避免冗余的网易云匹配
-                songName: meta.songName,
+            // 如果后续需要，可以根据songId进行精确匹配
-                artist: meta.artist,
+            meta.songFromWyCloud = {
-                album: meta.album,
+                songId: songId,
-                musicPlatformSongId: songId,
+                songName: meta.songName || "",
-            });
+                artist: meta.artist || "",
-            if (!songFromWyCloud) {
+                album: meta.album || "",
-                logger.error(`song not found in wycloud`);
+            };
-                res.status(412).send({
+            logger.info(`[sync_jobs] Using provided songId: ${songId}, will handle matching later if needed`);
-                    status: 1,
-                    message: "can not find song in wycloud with your songId",
-                });
-                return;
-            }
-            meta.songFromWyCloud = songFromWyCloud;
         }
 
         // create job

backend/src/service/sync_music/sync_single_song_with_url.js

@@ -154,10 +154,29 @@ module.exports = async function syncSingleSongWithUrl(uid, url, {
     await updateJobIfNeed(uid, jobId, songInfo, jobType);
 
     // step 2. find the best match from wycloud
-    if (songFromWyCloud === null) {
+    if (songFromWyCloud && songFromWyCloud.songId) {
+        // 如果已经提供了songId，优先使用它进行精确匹配
+        logger.info(`[syncSingleSongWithUrl] Using provided songId: ${songFromWyCloud.songId}`);
+        try {
+            const wySongInfo = await getWySongInfo(uid, songFromWyCloud.songId);
+            if (wySongInfo) {
+                songFromWyCloud = buildSongInfoFromWyCloud(wySongInfo);
+                logger.info(`[syncSingleSongWithUrl] Found exact match via songId: ${wySongInfo.songName} - ${wySongInfo.artists?.[0] || 'Unknown'}`);
+            } else {
+                logger.warn(`[syncSingleSongWithUrl] songId ${songFromWyCloud.songId} not found in WyCloud, will try name-based matching`);
+                songFromWyCloud = null; // 回退到基于名称的匹配
+            }
+        } catch (error) {
+            logger.error(`[syncSingleSongWithUrl] Error matching songId: ${error.message}`);
+            songFromWyCloud = null;
+        }
+    }
+
+    // 如果没有songId或精确匹配失败，进行基于名称的匹配
+    if (!songFromWyCloud) {
         let findSongName, findArtist, findAlbum;
         if (songName !== "" && artist !== "") {
-            logger.info(`use the user input song name and artist, ${songName}, ${artist}, ${album}`);
+            logger.info(`[syncSingleSongWithUrl] use the user input song name and artist, ${songName}, ${artist}, ${album}`);
             findSongName = songName;
             findArtist = artist;
             findAlbum = album;
@@ -166,16 +185,23 @@ module.exports = async function syncSingleSongWithUrl(uid, url, {
             findArtist = songInfo.artist;
             findAlbum = songInfo.album;
         }
+        if (findSongName && findArtist) {
             songFromWyCloud = await findTheBestMatchFromWyCloud(uid, {
                 songName: findSongName,
                 artist: findArtist,
                 album: findAlbum,
             });
+            if (songFromWyCloud) {
+                logger.info(`[syncSingleSongWithUrl] Found match via name-based search: ${songFromWyCloud.songName}`);
             } else {
-        logger.info(`use the songFromWyCloud by params`);
+                logger.info(`[syncSingleSongWithUrl] No match found in WyCloud, will upload as new song`);
+            }
+        } else {
+            logger.info(`[syncSingleSongWithUrl] No song info available for matching`);
+        }
     }
 
-    logger.info('songFromWyCloud:', songFromWyCloud);
+    logger.info('[syncSingleSongWithUrl] songFromWyCloud:', songFromWyCloud);
     
     // step 3. download
     // should add meta tag if not matched song on wycloud