fix: preserve embedded metadata details

go_backend/ape_tags.go

@@ -453,7 +453,7 @@ func apeKeysFromFields(fields map[string]string) map[string]struct{} {
 		"artist":                "ARTIST",
 		"album":                 "ALBUM",
 		"album_artist":          "ALBUM ARTIST",
-		"date":                  "YEAR",
+		"date":                  "DATE",
 		"genre":                 "GENRE",
 		"track_number":          "TRACK",
 		"disc_number":           "DISC",
@@ -475,7 +475,7 @@ func apeKeysFromFields(fields map[string]string) map[string]struct{} {
 		}
 	}
 	// Some fields have reader aliases that must also be cleared when the
-	// canonical key is updated (e.g. "Year" writer ↔ DATE/YEAR reader,
+	// canonical key is updated (e.g. DATE writer ↔ DATE/YEAR reader,
 	// DISC ↔ DISCNUMBER, TRACK ↔ TRACKNUMBER, "ALBUM ARTIST" ↔ ALBUMARTIST,
 	// LABEL ↔ PUBLISHER, LYRICS ↔ UNSYNCEDLYRICS).
 	if _, present := fields["date"]; present {

go_backend/library_scan.go

@@ -31,6 +31,8 @@ type LibraryScanResult struct {
 	SampleRate           int    `json:"sampleRate,omitempty"`
 	Bitrate              int    `json:"bitrate,omitempty"` // kbps, for lossy formats (MP3, Opus, Vorbis)
 	Genre                string `json:"genre,omitempty"`
+	Label                string `json:"label,omitempty"`
+	Copyright            string `json:"copyright,omitempty"`
 	Format               string `json:"format,omitempty"`
 	MetadataFromFilename bool   `json:"metadataFromFilename,omitempty"`
 }
@@ -368,6 +370,8 @@ func scanFLACFile(filePath string, result *LibraryScanResult, displayNameHint st
 	result.DiscNumber = metadata.DiscNumber
 	result.ReleaseDate = metadata.Date
 	result.Genre = metadata.Genre
+	result.Label = metadata.Label
+	result.Copyright = metadata.Copyright
 
 	quality, err := GetAudioQuality(filePath)
 	if err == nil {
@@ -403,6 +407,8 @@ func scanM4AFile(filePath string, result *LibraryScanResult, displayNameHint str
 			result.ReleaseDate = metadata.Year
 		}
 		result.Genre = metadata.Genre
+		result.Label = metadata.Label
+		result.Copyright = metadata.Copyright
 	}
 
 	quality, err := GetM4AQuality(filePath)
@@ -435,6 +441,8 @@ func scanMP3File(filePath string, result *LibraryScanResult, displayNameHint str
 		result.ReleaseDate = metadata.Year
 	}
 	result.ISRC = metadata.ISRC
+	result.Label = metadata.Label
+	result.Copyright = metadata.Copyright
 
 	quality, err := GetMP3Quality(filePath)
 	if err == nil {
@@ -467,6 +475,8 @@ func scanOggFile(filePath string, result *LibraryScanResult, displayNameHint str
 	result.DiscNumber = metadata.DiscNumber
 	result.Genre = metadata.Genre
 	result.ReleaseDate = metadata.Date
+	result.Label = metadata.Label
+	result.Copyright = metadata.Copyright
 
 	quality, err := GetOggQuality(filePath)
 	if err == nil {
@@ -508,6 +518,8 @@ func scanAPEFile(filePath string, result *LibraryScanResult, displayNameHint str
 	} else {
 		result.ReleaseDate = metadata.Year
 	}
+	result.Label = metadata.Label
+	result.Copyright = metadata.Copyright
 
 	applyDefaultLibraryMetadata(filePath, displayNameHint, result)