84 lines
1.8 KiB
Go
84 lines
1.8 KiB
Go
package tag
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import (
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"strconv"
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"strings"
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"github.com/bogem/id3v2/v2"
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)
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type id3v2Tagger struct {
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tag *id3v2.Tag
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}
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func (t *id3v2Tagger) write(m Metadata) error {
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defer t.tag.Close()
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if m.Album != nil {
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year := m.Album.ReleaseDate
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if parts := strings.Split(year, "-"); len(parts) == 3 {
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year = parts[0]
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}
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t.addTag("TRCK", m.TrackNumber)
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t.addTag("TPE2", m.Album.Artist)
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t.addTag("TALB", m.Album.Title)
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t.addTag("TPUB", m.Album.Label)
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t.addTag("TDOR", m.Album.OriginalReleaseDate)
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t.addTag("TYER", year)
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t.addComment(m.Album.ProducerLine)
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t.addTag("TCOP", m.Album.Copyright)
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}
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t.addTag("TPE1", m.Artists)
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t.addTag("TIT2", m.Title)
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t.addTag("TCOM", m.Composers)
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t.addTag("TEXT", m.Lyricists)
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t.addTag("TCON", m.Genre)
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if duration, err := strconv.Atoi(m.Duration); err == nil {
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t.addTag("TLEN", strconv.Itoa(duration*1000))
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}
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t.addTag("TBPM", m.BPM)
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t.addTag("TKEY", m.Key)
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t.addTXXX("GAIN", m.Gain)
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t.addTXXX("ISRC", m.ISRC)
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if len(m.Cover) > 0 {
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t.tag.AddAttachedPicture(id3v2.PictureFrame{
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Encoding: t.tag.DefaultEncoding(),
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MimeType: "image/jpeg",
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PictureType: id3v2.PTFrontCover,
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Description: "Cover",
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Picture: m.Cover,
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})
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}
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return t.tag.Save()
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}
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func (t *id3v2Tagger) addTag(name, value string) {
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if value != "" {
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t.tag.AddTextFrame(name, t.tag.DefaultEncoding(), value)
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}
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}
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func (t *id3v2Tagger) addComment(value string) {
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if value != "" {
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t.tag.AddCommentFrame(id3v2.CommentFrame{
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Encoding: t.tag.DefaultEncoding(),
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Language: "eng",
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Text: value,
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})
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}
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}
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func (t *id3v2Tagger) addTXXX(description, value string) {
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if value != "" {
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t.tag.AddUserDefinedTextFrame(id3v2.UserDefinedTextFrame{
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Encoding: t.tag.DefaultEncoding(),
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Description: description,
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Value: value,
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})
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}
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}
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