feat: add subsonic library discovery endpoints

internal/httpapi/router.go

@@ -97,6 +97,12 @@ func NewRouter(cfg config.Config, database *sql.DB, scanService *scanner.Service
 			restGet(authed, "getAlbum", application.subsonicAlbumByID)
 			restGet(authed, "getSong", application.subsonicSongByID)
 			restGet(authed, "getRandomSongs", application.subsonicRandomSongs)
+			restGet(authed, "getAlbumList2", application.subsonicAlbumList2)
+			restGet(authed, "getMusicFolders", application.subsonicMusicFolders)
+			restGet(authed, "getGenres", application.subsonicGenres)
+			restGet(authed, "getPodcasts", application.subsonicPodcasts)
+			restGet(authed, "getNewestPodcasts", application.subsonicNewestPodcasts)
+			restGet(authed, "getInternetRadioStations", application.subsonicInternetRadioStations)
 			restGet(authed, "search3", application.subsonicSearch3)
 			restGet(authed, "getStarred2", application.subsonicStarred2)
 			restGet(authed, "star", application.subsonicStar)
@@ -456,6 +462,46 @@ func (a app) subsonicRandomSongs(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, subsonic.RandomSongsResponse(tracks))
 }
 
+func (a app) subsonicAlbumList2(w http.ResponseWriter, r *http.Request) {
+	size := 60
+	if raw := strings.TrimSpace(r.URL.Query().Get("size")); raw != "" {
+		if parsed := parsePositiveInt(raw); parsed > 0 {
+			size = parsed
+		}
+	}
+	albums, err := a.library.Albums(r.Context(), size)
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, subsonic.ErrorResponse(0, "failed to load albums"))
+		return
+	}
+	writeJSON(w, http.StatusOK, subsonic.AlbumList2Response(albums))
+}
+
+func (a app) subsonicMusicFolders(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, subsonic.MusicFoldersResponse())
+}
+
+func (a app) subsonicGenres(w http.ResponseWriter, r *http.Request) {
+	genres, err := a.library.Genres(r.Context())
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, subsonic.ErrorResponse(0, "failed to load genres"))
+		return
+	}
+	writeJSON(w, http.StatusOK, subsonic.GenresResponse(genres))
+}
+
+func (a app) subsonicPodcasts(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, subsonic.PodcastsResponse())
+}
+
+func (a app) subsonicNewestPodcasts(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, subsonic.NewestPodcastsResponse())
+}
+
+func (a app) subsonicInternetRadioStations(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, subsonic.InternetRadioStationsResponse())
+}
+
 func (a app) subsonicSearch3(w http.ResponseWriter, r *http.Request) {
 	query := strings.TrimSpace(r.URL.Query().Get("query"))
 	if query == "" {