fix: Robust Deezer URL generation with direct track links and sanitized search paths to prevent HTTP_NOT_FOUND

server/routes/metadata.js

@@ -122,6 +122,8 @@ router.get('/', async (req, res) => {
           is_corrected: !!local.is_corrected,
           cover_url: local.cover_url || null,
           preview_url: local.preview_url || null,
+          deezer_id: local.deezer_id || null,
+          deezer_link: local.deezer_link || (local.deezer_id ? `https://www.deezer.com/track/${local.deezer_id}` : null),
           duration_sec: local.duration_sec || 210,
           energy: local.energy || est.energy,
           danceability: local.danceability || est.danceability,
@@ -193,6 +195,8 @@ router.get('/', async (req, res) => {
     // 4. Query Deezer for cover, duration, preview, and genre fallback
     let durationSec = 210;
     let previewUrl = null;
+    let deezerLink = null;
+    let deezerId = null;
     try {
       const deezerRes = await axios.get(`https://api.deezer.com/search?q=${encodeURIComponent(artist + ' ' + track)}&limit=1`, {
         timeout: 3000
@@ -208,6 +212,13 @@ router.get('/', async (req, res) => {
         if (dTrack.preview) {
           previewUrl = dTrack.preview;
         }
+        if (dTrack.link) {
+          deezerLink = dTrack.link;
+        }
+        if (dTrack.id) {
+          deezerId = dTrack.id;
+          if (!deezerLink) deezerLink = `https://www.deezer.com/track/${dTrack.id}`;
+        }
       }
     } catch (e) {
       // ignore
@@ -250,6 +261,8 @@ router.get('/', async (req, res) => {
         cover_url: coverUrl,
         preview_url: previewUrl,
         duration_sec: durationSec,
+        deezer_id: deezerId,
+        deezer_link: deezerLink,
         energy: audioAttrs.energy,
         danceability: audioAttrs.danceability,
         happiness: audioAttrs.happiness,

server/routes/search.js

@@ -35,7 +35,8 @@ router.get('/', async (req, res) => {
           cover_url: item.album && item.album.cover_medium ? item.album.cover_medium : (item.album ? item.album.cover : null),
           preview_url: item.preview || null,
           duration_sec: item.duration || 210,
-          deezer_id: item.id
+          deezer_id: item.id,
+          deezer_link: item.link || (item.id ? `https://www.deezer.com/track/${item.id}` : null)
         }));
       }
     } catch (e) {
@@ -63,6 +64,8 @@ router.get('/', async (req, res) => {
         energy: lt.energy,
         danceability: lt.danceability,
         happiness: lt.happiness,
+        deezer_id: lt.deezer_id || null,
+        deezer_link: lt.deezer_link || (lt.deezer_id ? `https://www.deezer.com/track/${lt.deezer_id}` : null),
         is_local: true,
         is_corrected: lt.is_corrected
       });
@@ -81,6 +84,8 @@ router.get('/', async (req, res) => {
         cover_url: ot.cover_url,
         preview_url: ot.preview_url,
         duration_sec: ot.duration_sec,
+        deezer_id: ot.deezer_id,
+        deezer_link: ot.deezer_link,
         camelot_key: existingLocal ? existingLocal.camelot_key : null,
         bpm: existingLocal ? existingLocal.bpm : null,
         music_key: existingLocal ? existingLocal.music_key : null,

server/routes/suggestions.js

@@ -80,6 +80,7 @@ router.get('/', async (req, res) => {
         compatLabel: compatLabel,
         cover_url: t.cover_url || null,
         preview_url: t.preview_url || null,
+        deezer_link: t.deezer_link || (t.deezer_id ? `https://www.deezer.com/track/${t.deezer_id}` : null),
         duration_sec: t.duration_sec || 215,
         energy: t.energy || defaultEnergy,
         danceability: t.danceability || defaultDance,