feat: add subsonic library discovery endpoints

internal/subsonic/service.go

@@ -21,12 +21,18 @@ type Response struct {
 	Artists       []ArtistRef    `json:"artists,omitempty"`
 	Artist        *ArtistFull    `json:"artist,omitempty"`
 	Album         *AlbumFull     `json:"album,omitempty"`
+	AlbumList2    *AlbumList2    `json:"albumList2,omitempty"`
 	Song          *SongFull      `json:"song,omitempty"`
 	RandomSong    []SongRef      `json:"randomSongs,omitempty"`
 	SearchResult3 *SearchResult3 `json:"searchResult3,omitempty"`
 	Starred2      *Starred2      `json:"starred2,omitempty"`
 	Playlists     *Playlists     `json:"playlists,omitempty"`
 	Playlist      *Playlist      `json:"playlist,omitempty"`
+	MusicFolders  *MusicFolders  `json:"musicFolders,omitempty"`
+	Genres        *Genres        `json:"genres,omitempty"`
+	Podcasts      *Podcasts      `json:"podcasts,omitempty"`
+	NewestPods    *NewestPods    `json:"newestPodcasts,omitempty"`
+	RadioStations *RadioStations `json:"internetRadioStations,omitempty"`
 	ScanStatus    *ScanStatus    `json:"scanStatus,omitempty"`
 	Error         *ErrorRef      `json:"error,omitempty"`
 }
@@ -73,6 +79,10 @@ type AlbumFull struct {
 	Song     []SongRef `json:"song,omitempty"`
 }
 
+type AlbumList2 struct {
+	Album []AlbumRef `json:"album,omitempty"`
+}
+
 type SongFull struct {
 	ID       string `json:"id"`
 	Title    string `json:"title"`
@@ -134,6 +144,37 @@ type PlaylistSummary struct {
 	Changed   string `json:"changed,omitempty"`
 }
 
+type MusicFolders struct {
+	MusicFolder []MusicFolder `json:"musicFolder,omitempty"`
+}
+
+type MusicFolder struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+type Genres struct {
+	Genre []Genre `json:"genre,omitempty"`
+}
+
+type Genre struct {
+	Value      string `json:"value"`
+	AlbumCount int    `json:"albumCount,omitempty"`
+	SongCount  int    `json:"songCount,omitempty"`
+}
+
+type Podcasts struct {
+	Channel []any `json:"channel,omitempty"`
+}
+
+type NewestPods struct {
+	Episode []any `json:"episode,omitempty"`
+}
+
+type RadioStations struct {
+	InternetRadioStation []any `json:"internetRadioStation,omitempty"`
+}
+
 type ErrorRef struct {
 	Code    int    `json:"code"`
 	Message string `json:"message"`
@@ -337,6 +378,23 @@ func AlbumResponse(album library.AlbumDetail) Envelope {
 	return response
 }
 
+func AlbumList2Response(albums []library.Album) Envelope {
+	response := PingResponse()
+	payload := &AlbumList2{}
+	for _, album := range albums {
+		payload.Album = append(payload.Album, AlbumRef{
+			ID:       album.ID,
+			Name:     album.Title,
+			Artist:   album.ArtistName,
+			ArtistID: album.ArtistID,
+			Year:     album.Year,
+			CoverArt: album.CoverArtID,
+		})
+	}
+	response.SubsonicResponse.AlbumList2 = payload
+	return response
+}
+
 func SongResponse(track library.Track) Envelope {
 	response := PingResponse()
 	response.SubsonicResponse.Song = &SongFull{
@@ -366,6 +424,46 @@ func ScanStatusResponse(status scanner.Status) Envelope {
 	return response
 }
 
+func MusicFoldersResponse() Envelope {
+	response := PingResponse()
+	response.SubsonicResponse.MusicFolders = &MusicFolders{
+		MusicFolder: []MusicFolder{{ID: "1", Name: "Music"}},
+	}
+	return response
+}
+
+func GenresResponse(genres []library.GenreSummary) Envelope {
+	response := PingResponse()
+	payload := &Genres{}
+	for _, genre := range genres {
+		payload.Genre = append(payload.Genre, Genre{
+			Value:      genre.Value,
+			AlbumCount: genre.AlbumCount,
+			SongCount:  genre.SongCount,
+		})
+	}
+	response.SubsonicResponse.Genres = payload
+	return response
+}
+
+func PodcastsResponse() Envelope {
+	response := PingResponse()
+	response.SubsonicResponse.Podcasts = &Podcasts{}
+	return response
+}
+
+func NewestPodcastsResponse() Envelope {
+	response := PingResponse()
+	response.SubsonicResponse.NewestPods = &NewestPods{}
+	return response
+}
+
+func InternetRadioStationsResponse() Envelope {
+	response := PingResponse()
+	response.SubsonicResponse.RadioStations = &RadioStations{}
+	return response
+}
+
 func ErrorResponse(code int, message string) Envelope {
 	response := PingResponse()
 	response.SubsonicResponse.Status = "failed"