// AddFileToPlaylist function adds a file to a specific playlist.
// The function also checks that the file exists in the MuLi database.
func AddFileToPlaylist(file playlistmgr.PlaylistFile, playlistName string) error {
path, err := GetFilePath(file.Artist, file.Album, file.Title)
if err != nil {
return errors.New("Playlist item not found in MuLi.")
}
file.Path = path
db, err := bolt.Open(config.DbPath, 0600, nil)
if err != nil {
return err
}
defer db.Close()
err = db.Update(func(tx *bolt.Tx) error {
root := tx.Bucket([]byte("Playlists"))
if root == nil {
glog.Errorf("Error opening Playlists bucket: %s\n", err)
return errors.New("Error opening Playlists bucket.")
}
playlistBucket := root.Bucket([]byte(playlistName))
if playlistBucket == nil {
glog.Errorf("Error opening %s playlist bucket: %s\n", playlistName, err)
return errors.New("Error opening playlist bucket.")
}
encoded, err := json.Marshal(file)
if err != nil {
glog.Errorf("Cannot encode PlaylistFile.")
return err
}
playlistBucket.Put([]byte(file.Title), encoded)
// Update the original file playlists to have a link to the
// current playlist.
root = tx.Bucket([]byte("Artists"))
if root == nil {
glog.Errorf("Error opening Artists bucket: %s\n", err)
return errors.New("Error opening Artists bucket.")
}
artistBucket := root.Bucket([]byte(file.Artist))
if artistBucket == nil {
glog.Errorf("Error opening %s artist bucket: %s\n", file.Artist, err)
return errors.New("Error opening artist bucket.")
}
albumBucket := artistBucket.Bucket([]byte(file.Album))
if albumBucket == nil {
glog.Errorf("Error opening %s album on %s artist: %s\n", file.Album, file.Artist, err)
return errors.New("Error opening album bucket.")
}
songJson := albumBucket.Get([]byte(file.Title))
if songJson == nil {
glog.Errorf("Error opening %s on %s album on %s artist: %s\n", file.Title, file.Album, file.Artist, err)
return errors.New("Error opening song json.")
}
var song SongStore
err = json.Unmarshal(songJson, &song)
if err != nil {
return err
}
if song.Playlists != nil {
for _, list := range song.Playlists {
if list == playlistName {
return nil
}
}
}
song.Playlists = append(song.Playlists, playlistName)
encoded, err = json.Marshal(song)
if err != nil {
return err
}
return albumBucket.Put([]byte(file.Title), encoded)
})
return err
}
// DelayedHandlePlaylistSong handles a dropped file
// inside a playlist and is called by the background
// dispatcher after some time has passed.
func DelayedHandlePlaylistSong(f File) error {
rootPoint := f.mPoint
if rootPoint[len(rootPoint)-1] != '/' {
rootPoint = rootPoint + "/"
}
path := rootPoint + "playlists/" + f.album + "/" + f.name
extension := filepath.Ext(f.name)
if extension != ".mp3" {
os.Remove(path)
return errors.New("File is not an mp3.")
}
src, err := os.Stat(path)
if err != nil || src.IsDir() {
return errors.New("File not found.")
}
err, tags := musicmgr.GetMp3Tags(path)
if err != nil {
os.Remove(path)
return err
}
artist := store.GetCompatibleString(tags.Artist)
album := store.GetCompatibleString(tags.Album)
title := tags.Title
if strings.HasSuffix(title, ".mp3") {
title = title[:len(title)-len(".mp3")]
}
title = store.GetCompatibleString(title) + ".mp3"
newPath, err := store.GetFilePath(artist, album, title)
if err == nil {
var playlistFile playlistmgr.PlaylistFile
playlistFile.Title = title
playlistFile.Artist = artist
playlistFile.Album = album
playlistFile.Path = newPath
err = store.AddFileToPlaylist(playlistFile, f.album)
} else {
err = store.HandleDrop(path, rootPoint)
if err == nil {
newPath, err = store.GetFilePath(artist, album, title)
if err == nil {
var playlistFile playlistmgr.PlaylistFile
playlistFile.Title = title
playlistFile.Artist = artist
playlistFile.Album = album
playlistFile.Path = newPath
err = store.AddFileToPlaylist(playlistFile, f.album)
}
}
}
os.Remove(path)
if err == nil {
err = store.RegeneratePlaylistFile(f.album, rootPoint)
}
return err
}