remove album type suffix from album name

scripts/clean-id3/main.go

@@ -149,6 +149,8 @@ func loadSongFile(fileName string) (string, error) {
 		DiscCount: discCount,
 	}
 
+	loadedTags.Album = removeAlbumTypeSuffix(loadedTags.Album)
+
 	err = loadedTags.Validate()
 	if err != nil {
 		return "", err
@@ -157,6 +159,26 @@ func loadSongFile(fileName string) (string, error) {
 	return id3Template(loadedTags)
 }
 
+// remove " - Single" and etc
+func removeAlbumTypeSuffix(albumName string) string {
+	if str, ok := removeSuffix(albumName, " - LP"); ok {
+		albumName = str
+	} else if str, ok := removeSuffix(albumName, " - EP"); ok {
+		albumName = str
+	} else if str, ok := removeSuffix(albumName, " - Single"); ok {
+		albumName = str
+	}
+	return albumName
+}
+
+func removeSuffix(str, suff string) (string, bool) {
+	if strings.HasSuffix(str, suff) {
+		suffIndex := len(str) - len(suff)
+		return str[:suffIndex], true
+	}
+	return str, false
+}
+
 // converts an id3 tag into a string
 func id3Template(tags Tags) (string, error) {
 	tmpl := template.Must(template.New("id3template").Parse(ID3_TEMPLATE))