feat(dz): add local caching and UI for user favorites

src/lib/services/deezer.ts

@@ -307,7 +307,7 @@ export class DeezerAPI {
       const response = await this.apiCall('deezer.pageProfile', {
         USER_ID: userId,
         tab: 'playlists',
-        nb: 100
+        nb: -1
       });
 
       return response.TAB?.playlists?.data || [];
@@ -317,6 +317,86 @@ export class DeezerAPI {
     }
   }
 
+  // Get user albums
+  async getUserAlbums(): Promise<any[]> {
+    try {
+      const userData = await this.getUserData();
+      const userId = userData.USER.USER_ID;
+
+      const response = await this.apiCall('deezer.pageProfile', {
+        USER_ID: userId,
+        tab: 'albums',
+        nb: -1
+      });
+
+      return response.TAB?.albums?.data || [];
+    } catch (error) {
+      console.error('Error fetching albums:', error);
+      return [];
+    }
+  }
+
+  // Get user artists
+  async getUserArtists(): Promise<any[]> {
+    try {
+      const userData = await this.getUserData();
+      const userId = userData.USER.USER_ID;
+
+      const response = await this.apiCall('deezer.pageProfile', {
+        USER_ID: userId,
+        tab: 'artists',
+        nb: -1
+      });
+
+      return response.TAB?.artists?.data || [];
+    } catch (error) {
+      console.error('Error fetching artists:', error);
+      return [];
+    }
+  }
+
+  // Get user favorite tracks (uses the more reliable song.getFavoriteIds method)
+  async getUserTracks(): Promise<any[]> {
+    try {
+      // Get favorite track IDs
+      const idsResponse = await this.apiCall('song.getFavoriteIds', {
+        nb: -1,
+        start: 0,
+        checksum: null
+      });
+
+      const trackIds = idsResponse.data?.map((x: any) => x.SNG_ID) || [];
+
+      if (trackIds.length === 0) {
+        console.log('[Deezer] No favorite tracks found');
+        return [];
+      }
+
+      console.log(`[Deezer] Found ${trackIds.length} favorite track IDs, fetching details...`);
+
+      // Fetch track details in batches (Deezer API might have limits)
+      const batchSize = 100;
+      const tracks: any[] = [];
+
+      for (let i = 0; i < trackIds.length; i += batchSize) {
+        const batchIds = trackIds.slice(i, i + batchSize);
+        const batchResponse = await this.apiCall('song.getListData', {
+          SNG_IDS: batchIds
+        });
+
+        if (batchResponse.data) {
+          tracks.push(...batchResponse.data);
+        }
+      }
+
+      console.log(`[Deezer] Fetched ${tracks.length} track details`);
+      return tracks;
+    } catch (error) {
+      console.error('Error fetching favorite tracks:', error);
+      return [];
+    }
+  }
+
   // Get album data
   async getAlbumData(albumId: string): Promise<any> {
     return this.apiCall('album.getData', { alb_id: albumId });