externalize ArtworkFolder configuration, load any supported image format

Signed-off-by: Deluan <deluan@navidrome.org>

conf/configuration.go

@@ -66,6 +66,7 @@ type configOptions struct {
 	FFmpegPath                      string
 	MPVPath                         string
 	MPVCmdTemplate                  string
+	ArtworkFolder                   string
 	CoverArtPriority                string
 	CoverJpegQuality                int
 	ArtistArtPriority               string
@@ -236,6 +237,10 @@ func Load(noConfigDump bool) {
 		os.Exit(1)
 	}
 
+	if Server.ArtworkFolder == "" {
+		Server.ArtworkFolder = filepath.Join(Server.DataFolder, "artwork")
+	}
+
 	Server.ConfigFile = viper.GetViper().ConfigFileUsed()
 	if Server.DbPath == "" {
 		Server.DbPath = filepath.Join(Server.DataFolder, consts.DefaultDbPath)
@@ -452,6 +457,7 @@ func init() {
 	viper.SetDefault("ffmpegpath", "")
 	viper.SetDefault("mpvcmdtemplate", "mpv --audio-device=%d --no-audio-display --pause %f --input-ipc-server=%s")
 
+	viper.SetDefault("ArtworkFolder", "")
 	viper.SetDefault("coverartpriority", "cover.*, folder.*, front.*, embedded, external")
 	viper.SetDefault("coverjpegquality", 75)
 	viper.SetDefault("artistartpriority", "artist.*, album/artist.*, external")

conf/mime/mime_types.go

@@ -15,7 +15,10 @@ type mimeConf struct {
 	Lossless []string          `yaml:"lossless"`
 }
 
-var LosslessFormats []string
+var (
+	LosslessFormats      []string
+	ValidImageExtensions []string
+)
 
 func initMimeTypes() {
 	// In some circumstances, Windows sets JS mime-type to `text/plain`!
@@ -36,6 +39,9 @@ func initMimeTypes() {
 	}
 	for ext, typ := range mimeConf.Types {
 		_ = mime.AddExtensionType(ext, typ)
+		if strings.HasPrefix(typ, "image/") {
+			ValidImageExtensions = append(ValidImageExtensions, ext)
+		}
 	}
 
 	for _, ext := range mimeConf.Lossless {

core/artwork/reader_playlist.go

@@ -14,6 +14,7 @@ import (
 
 	"github.com/disintegration/imaging"
 	"github.com/navidrome/navidrome/conf"
+	"github.com/navidrome/navidrome/conf/mime"
 	"github.com/navidrome/navidrome/log"
 	"github.com/navidrome/navidrome/model"
 	"github.com/navidrome/navidrome/utils/slice"
@@ -57,7 +58,7 @@ func (a *playlistArtworkReader) Reader(ctx context.Context) (io.ReadCloser, stri
 func (a *playlistArtworkReader) fromPlaylistNamedCover(ctx context.Context) sourceFunc {
 	return func() (io.ReadCloser, string, error) {
 		playlistName := a.pl.Name
-		imagePath, err := findMatchingImage(playlistName)
+		imagePath, err := findMatchingImage(ctx, "playlist", playlistName)
 		if err != nil {
 			return nil, "", err
 		}
@@ -69,13 +70,12 @@ func (a *playlistArtworkReader) fromPlaylistNamedCover(ctx context.Context) sour
 	}
 }
 
-func findMatchingImage(playlistName string) (string, error) {
-	extensions := []string{".png", ".jpg", ".jpeg"}
-	for _, ext := range extensions {
-		mediaFolder := conf.Server.MusicFolder
-		path := filepath.Join(mediaFolder, "/customArtwork", playlistName+ext)
-		if _, err := os.Stat(path); err == nil {
-			return path, nil
+func findMatchingImage(_ context.Context, resource string, name string) (string, error) {
+	path := filepath.Join(conf.Server.ArtworkFolder, resource, name)
+	for _, ext := range mime.ValidImageExtensions {
+		filename := path + ext
+		if _, err := os.Stat(filename); err == nil {
+			return filename, nil
 		}
 	}
 	return "", errors.New("no matching image found")