Add common go types

internal/common/song.go

@@ -0,0 +1,122 @@
+package common
+
+import (
+	"slices"
+	"time"
+)
+
+type Song struct {
+	artists      []string
+	title        string
+	file         string
+	albumartists []string
+	track        string
+	length       uint64
+	date         string
+	lastModified time.Time
+}
+
+func NewSong(artist string, title string, file string) *Song {
+	song := Song{
+		artists: []string{artist},
+		title:   title,
+		file:    file,
+	}
+
+	return &song
+}
+
+func (s *Song) AddArtist(artist string) {
+	s.artists = append(s.artists, artist)
+}
+
+func (s *Song) AddAlbumartist(artist string) {
+	s.albumartists = append(s.albumartists, artist)
+}
+
+func (s *Song) SongArtists() []string {
+	if len(s.albumartists) > 0 {
+		songArtists := []string{}
+		for _, artist := range s.artists {
+			if !slices.Contains(s.albumartists, artist) {
+				songArtists = append(songArtists, artist)
+			}
+		}
+
+		return songArtists
+	}
+
+	return []string{}
+}
+
+func (s *Song) AlbumArtists() []string {
+	if len(s.albumartists) > 0 {
+		return s.albumartists
+	}
+
+	return s.artists
+}
+
+func (s *Song) Title() string {
+	return s.title
+}
+
+func (s *Song) File() string {
+	return s.file
+}
+
+func (s *Song) SetTrack(track string) {
+	s.track = track
+}
+
+func (s *Song) Track() string {
+	return s.track
+}
+
+func (s *Song) SetLength(length uint64) {
+	s.length = length
+}
+
+func (s *Song) Length() uint64 {
+	return s.length
+}
+
+func (s *Song) SetDate(date string) {
+	s.date = date
+}
+
+func (s *Song) Date() string {
+	return s.date
+}
+
+func (s *Song) SetLastModified(lastModified time.Time) {
+	s.lastModified = lastModified
+}
+
+func (s *Song) LastModified() time.Time {
+	return s.lastModified
+}
+
+type PlaylistSong struct {
+	*Song
+	id  string
+	pos uint64
+}
+
+func NewPlaylistSong(song *Song, id string, pos uint64) *PlaylistSong {
+	playlistSong := &PlaylistSong{
+		Song: song,
+		id:   id,
+		pos:  pos,
+	}
+
+	return playlistSong
+}
+
+func (t *PlaylistSong) ID() string {
+	return t.id
+}
+
+func (t *PlaylistSong) Pos() uint64 {
+	return t.pos
+}