refactor

backend/app.go

@@ -48,6 +48,7 @@ type App struct {
 	MPRISHandler    *MPRISHandler
 	WinSMTC         *SMTC
 	ipcServer       ipc.IPCServer
+	LrcLibFetcher   *LrcLibFetcher
 
 	// UI callbacks to be set in main
 	OnReactivate func()
@@ -57,7 +58,7 @@ type App struct {
 	displayAppName string
 	appVersionTag  string
 	configDir      string
-	CacheDir       string
+	cacheDir       string
 	portableMode   bool
 
 	isFirstLaunch bool // set by config file reader
@@ -103,7 +104,7 @@ func StartupApp(appName, displayAppName, appVersion, appVersionTag, latestReleas
 		displayAppName: displayAppName,
 		appVersionTag:  appVersionTag,
 		configDir:      confDir,
-		CacheDir:       cacheDir,
+		cacheDir:       cacheDir,
 		portableMode:   portableMode,
 	}
 	a.bgrndCtx, a.cancel = context.WithCancel(context.Background())
@@ -144,6 +145,9 @@ func StartupApp(appName, displayAppName, appVersion, appVersionTag, latestReleas
 	a.ServerManager.SetPrefetchAlbumCoverCallback(func(coverID string) {
 		_, _ = a.ImageManager.GetCoverThumbnail(coverID)
 	})
+	if a.Config.Application.EnableLrcLib {
+		a.LrcLibFetcher = NewLrcLibFetcher(a.cacheDir)
+	}
 
 	a.PlaybackManager.OnPlaying(func() {
 		SetSystemSleepDisabled(true)
@@ -411,7 +415,7 @@ func (a *App) LoginToDefaultServer(string) error {
 }
 
 func (a *App) DeleteServerCacheDir(serverID uuid.UUID) error {
-	path := path.Join(a.CacheDir, serverID.String())
+	path := path.Join(a.cacheDir, serverID.String())
 	log.Printf("Deleting server cache dir: %s", path)
 	return os.RemoveAll(path)
 }

backend/lrclib.go

@@ -20,13 +20,21 @@ import (
 	"github.com/dweymouth/supersonic/backend/mediaprovider"
 )
 
-const CACHE_LYRICS_FOLDER = "lyrics"
+const lrclibCacheFolder = "lrclib"
 
-func FetchLrcLibLyricsCached(name, artist, album string, durationSecs int, cacheDir string) (*mediaprovider.Lyrics, error) {
-	hash := makeTrackIdHash(name, artist, album, durationSecs)
-	cachePath := filepath.Join(cacheDir, CACHE_LYRICS_FOLDER)
+type LrcLibFetcher struct {
+	cachePath string
+}
+
+func NewLrcLibFetcher(baseCacheDir string) *LrcLibFetcher {
+	cachePath := filepath.Join(baseCacheDir, lrclibCacheFolder)
 	configdir.MakePath(cachePath)
-	cacheFilePath := filepath.Join(cachePath, fmt.Sprintf("%s_lyrics.txt", hash))
+	return &LrcLibFetcher{cachePath: cachePath}
+}
+
+func (l *LrcLibFetcher) FetchLrcLibLyrics(name, artist, album string, durationSecs int) (*mediaprovider.Lyrics, error) {
+	hash := makeTrackIdHash(name, artist, album, durationSecs)
+	cacheFilePath := filepath.Join(l.cachePath, fmt.Sprintf("%s.txt", hash))
 
 	// File is cached. Try to use it
 	if _, err := os.Stat(cacheFilePath); err == nil {
@@ -42,7 +50,7 @@ func FetchLrcLibLyricsCached(name, artist, album string, durationSecs int, cache
 	}
 
 	// Fetch the lyrics
-	lyrics, err := FetchLrcLibLyrics(name, artist, album, durationSecs)
+	lyrics, err := l.fetchFromServer(name, artist, album, durationSecs)
 	if err != nil {
 		return nil, err
 	}
@@ -56,8 +64,7 @@ func FetchLrcLibLyricsCached(name, artist, album string, durationSecs int, cache
 	return lyrics, nil
 }
 
-// FetchLrcLibLyrics is a static function to search and fetch lyrics from lrclib.net
-func FetchLrcLibLyrics(name, artist, album string, durationSecs int) (*mediaprovider.Lyrics, error) {
+func (l *LrcLibFetcher) fetchFromServer(name, artist, album string, durationSecs int) (*mediaprovider.Lyrics, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()