.upc metadata

backend/filemanager.go

@@ -31,6 +31,7 @@ type AudioMetadata struct {
 	DiscNumber  int    `json:"disc_number"`
 	Year        string `json:"year"`
 	ISRC        string `json:"isrc"`
+	UPC         string `json:"upc"`
 }
 
 type RenamePreview struct {
@@ -178,6 +179,10 @@ func readFlacMetadata(filePath string) (*AudioMetadata, error) {
 					metadata.Year = value
 				case "ISRC", "TSRC":
 					metadata.ISRC = value
+				case "UPC":
+					assignPreferredUPC(&metadata.UPC, value, true)
+				case "BARCODE":
+					assignPreferredUPC(&metadata.UPC, value, false)
 				}
 			}
 		}
@@ -229,6 +234,22 @@ func readMp3Metadata(filePath string) (*AudioMetadata, error) {
 			metadata.ISRC = textFrame.Text
 		}
 	}
+	if frames := tag.GetFrames("TXXX"); len(frames) > 0 {
+		for _, frame := range frames {
+			userTextFrame, ok := frame.(id3v2.UserDefinedTextFrame)
+			if !ok {
+				continue
+			}
+			matched, preferred := classifyUPCDescription(userTextFrame.Description)
+			if !matched {
+				continue
+			}
+			assignPreferredUPC(&metadata.UPC, userTextFrame.Value, preferred)
+			if preferred && strings.TrimSpace(metadata.UPC) != "" {
+				break
+			}
+		}
+	}
 
 	return metadata, nil
 }
@@ -315,6 +336,8 @@ func readMetadataWithFFprobe(filePath string) (*AudioMetadata, error) {
 		}
 	}
 
+	metadata.UPC = firstPreferredFFprobeUPCValue(allTags)
+
 	return metadata, nil
 }