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fix(deezer): add pagination for albums and playlists with >25 tracks

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- Deezer API default limit is 25 tracks per request

- Now fetches all tracks using pagination for albums >25 tracks

- Also fixes playlists with >25 tracks

- Fixes issue where Greatest Hits albums only showed 25 tracks
This commit is contained in:
zarzet
2026-01-31 11:47:00 +07:00
parent fa7b5a3559
commit 5f999035c3
1 changed files with 76 additions and 6 deletions
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go_backend/deezer.go
+76 -6
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@@ -331,16 +331,51 @@ func (c *DeezerClient) GetAlbum(ctx context.Context, albumID string) (*AlbumResp
Label: album.Label, // From Deezer album
}
isrcMap := c.fetchISRCsParallel(ctx, album.Tracks.Data)
// Fetch all tracks with pagination (Deezer default limit is 25)
allTracks := album.Tracks.Data
tracks := make([]AlbumTrackMetadata, 0, len(album.Tracks.Data))
// If album has more tracks than returned, fetch remaining pages
if album.NbTracks > len(allTracks) {
GoLog("[Deezer] Album has %d tracks but only got %d, fetching remaining...", album.NbTracks, len(allTracks))
tracksURL := fmt.Sprintf("%s/tracks?limit=100&index=%d", fmt.Sprintf(deezerAlbumURL, albumID), len(allTracks))
for len(allTracks) < album.NbTracks {
var tracksResp struct {
Data []deezerTrack `json:"data"`
Next string `json:"next"`
}
if err := c.getJSON(ctx, tracksURL, &tracksResp); err != nil {
GoLog("[Deezer] Warning: failed to fetch album tracks page: %v", err)
break
}
if len(tracksResp.Data) == 0 {
break
}
allTracks = append(allTracks, tracksResp.Data...)
if tracksResp.Next == "" {
break
}
tracksURL = tracksResp.Next
}
GoLog("[Deezer] Fetched total %d tracks for album", len(allTracks))
}
isrcMap := c.fetchISRCsParallel(ctx, allTracks)
tracks := make([]AlbumTrackMetadata, 0, len(allTracks))
// Normalize record_type (Deezer uses "compile" instead of "compilation")
albumType := album.RecordType
if albumType == "compile" {
albumType = "compilation"
}
for i, track := range album.Tracks.Data {
for i, track := range allTracks {
trackIDStr := fmt.Sprintf("%d", track.ID)
isrc := isrcMap[trackIDStr]
@@ -491,10 +526,45 @@ func (c *DeezerClient) GetPlaylist(ctx context.Context, playlistID string) (*Pla
info.Owner.Name = playlist.Title
info.Owner.Images = playlistImage
isrcMap := c.fetchISRCsParallel(ctx, playlist.Tracks.Data)
// Fetch all tracks with pagination (Deezer default limit is 25)
allTracks := playlist.Tracks.Data
tracks := make([]AlbumTrackMetadata, 0, len(playlist.Tracks.Data))
for _, track := range playlist.Tracks.Data {
// If playlist has more tracks than returned, fetch remaining pages
if playlist.NbTracks > len(allTracks) {
GoLog("[Deezer] Playlist has %d tracks but only got %d, fetching remaining...", playlist.NbTracks, len(allTracks))
tracksURL := fmt.Sprintf("%s/tracks?limit=100&index=%d", fmt.Sprintf(deezerPlaylistURL, playlistID), len(allTracks))
for len(allTracks) < playlist.NbTracks {
var tracksResp struct {
Data []deezerTrack `json:"data"`
Next string `json:"next"`
}
if err := c.getJSON(ctx, tracksURL, &tracksResp); err != nil {
GoLog("[Deezer] Warning: failed to fetch playlist tracks page: %v", err)
break
}
if len(tracksResp.Data) == 0 {
break
}
allTracks = append(allTracks, tracksResp.Data...)
if tracksResp.Next == "" {
break
}
tracksURL = tracksResp.Next
}
GoLog("[Deezer] Fetched total %d tracks for playlist", len(allTracks))
}
isrcMap := c.fetchISRCsParallel(ctx, allTracks)
tracks := make([]AlbumTrackMetadata, 0, len(allTracks))
for _, track := range allTracks {
albumImage := track.Album.CoverXL
if albumImage == "" {
albumImage = track.Album.CoverBig