// InsertTrack inserts track `t` at position `i` in the queue.
func (q *Queue) InsertTrack(i int, t interfaces.Track) error {
q.mutex.Lock()
beforeLen := len(q.Queue)
// An error should never occur here since maxTrackDuration is restricted to
// ints. Any error in the configuration will be caught during yaml load.
maxTrackDuration, _ := time.ParseDuration(fmt.Sprintf("%ds",
viper.GetInt("queue.max_track_duration")))
if viper.GetInt("queue.max_track_duration") == 0 ||
t.GetDuration() <= maxTrackDuration {
q.Queue = append(q.Queue, Track{})
copy(q.Queue[i+1:], q.Queue[i:])
q.Queue[i] = t
} else {
q.mutex.Unlock()
return errors.New("The track is too long to add to the queue")
}
if len(q.Queue) == beforeLen+1 {
q.mutex.Unlock()
q.playIfNeeded()
return nil
}
q.mutex.Unlock()
return errors.New("Could not add track to queue")
}
// Delete deletes the audio file associated with the incoming `track` object.
func (yt *YouTubeDL) Delete(t interfaces.Track) error {
if !viper.GetBool("cache.enabled") {
filePath := os.ExpandEnv(viper.GetString("cache.directory") + "/" + t.GetFilename())
if _, err := os.Stat(filePath); err == nil {
if err := os.Remove(filePath); err == nil {
return nil
}
return errors.New("An error occurred while deleting the audio file")
}
}
return nil
}
// Execute executes the command with the given user and arguments.
// Return value descriptions:
// string: A message to be returned to the user upon successful execution.
// bool: Whether the message should be private or not. true = private,
// false = public (sent to whole channel).
// error: An error message to be returned upon unsuccessful execution.
// If no error has occurred, pass nil instead.
// Example return statement:
// return "This is a private message!", true, nil
func (c *CurrentTrackCommand) Execute(user *gumble.User, args ...string) (string, bool, error) {
var (
currentTrack interfaces.Track
err error
)
if currentTrack, err = DJ.Queue.CurrentTrack(); err != nil {
return "", true, errors.New(viper.GetString("commands.common_messages.no_tracks_error"))
}
return fmt.Sprintf(viper.GetString("commands.currenttrack.messages.current_track"),
currentTrack.GetTitle(), currentTrack.GetSubmitter()), true, nil
}
// Execute executes the command with the given user and arguments.
// Return value descriptions:
// string: A message to be returned to the user upon successful execution.
// bool: Whether the message should be private or not. true = private,
// false = public (sent to whole channel).
// error: An error message to be returned upon unsuccessful execution.
// If no error has occurred, pass nil instead.
// Example return statement:
// return "This is a private message!", true, nil
func (c *AddNextCommand) Execute(user *gumble.User, args ...string) (string, bool, error) {
var (
allTracks []interfaces.Track
tracks []interfaces.Track
service interfaces.Service
err error
lastTrackAdded interfaces.Track
)
if len(args) == 0 {
return "", true, errors.New(viper.GetString("commands.add.messages.no_url_error"))
}
for _, arg := range args {
if service, err = DJ.GetService(arg); err == nil {
tracks, err = service.GetTracks(arg, user)
if err == nil {
allTracks = append(allTracks, tracks...)
}
}
}
if len(allTracks) == 0 {
return "", true, errors.New(viper.GetString("commands.add.messages.no_valid_tracks_error"))
}
numTooLong := 0
numAdded := 0
// We must loop backwards here to preserve the track order when inserting tracks.
for i := len(allTracks) - 1; i >= 0; i-- {
if err = DJ.Queue.InsertTrack(1, allTracks[i]); err != nil {
numTooLong++
} else {
numAdded++
lastTrackAdded = allTracks[i]
}
}
if numAdded == 0 {
return "", true, errors.New(viper.GetString("commands.add.messages.tracks_too_long_error"))
} else if numAdded == 1 {
return fmt.Sprintf(viper.GetString("commands.add.messages.one_track_added"),
user.Name, lastTrackAdded.GetTitle(), lastTrackAdded.GetService()), false, nil
}
retString := fmt.Sprintf(viper.GetString("commands.add.messages.many_tracks_added"), user.Name, numAdded)
if numTooLong != 0 {
retString += fmt.Sprintf(viper.GetString("commands.add.messages.num_tracks_too_long"), numTooLong)
}
return retString, false, nil
}
// Execute executes the command with the given user and arguments.
// Return value descriptions:
// string: A message to be returned to the user upon successful execution.
// bool: Whether the message should be private or not. true = private,
// false = public (sent to whole channel).
// error: An error message to be returned upon unsuccessful execution.
// If no error has occurred, pass nil instead.
// Example return statement:
// return "This is a private message!", true, nil
func (c *AddCommand) Execute(user *gumble.User, args ...string) (string, bool, error) {
var (
allTracks []interfaces.Track
tracks []interfaces.Track
service interfaces.Service
err error
lastTrackAdded interfaces.Track
)
if len(args) == 0 {
return "", true, errors.New(viper.GetString("commands.add.messages.no_url_error"))
}
for _, arg := range args {
if service, err = DJ.GetService(arg); err == nil {
tracks, err = service.GetTracks(arg, user)
if err == nil {
allTracks = append(allTracks, tracks...)
}
}
}
if len(allTracks) == 0 {
return "", true, errors.New(viper.GetString("commands.add.messages.no_valid_tracks_error"))
}
numTooLong := 0
numAdded := 0
for _, track := range allTracks {
if err = DJ.Queue.AppendTrack(track); err != nil {
numTooLong++
} else {
numAdded++
lastTrackAdded = track
}
}
if numAdded == 0 {
return "", true, errors.New(viper.GetString("commands.add.messages.tracks_too_long_error"))
} else if numAdded == 1 {
return fmt.Sprintf(viper.GetString("commands.add.messages.one_track_added"),
user.Name, lastTrackAdded.GetTitle(), lastTrackAdded.GetService()), false, nil
}
retString := fmt.Sprintf(viper.GetString("commands.add.messages.many_tracks_added"), user.Name, numAdded)
if numTooLong != 0 {
retString += fmt.Sprintf(viper.GetString("commands.add.messages.num_tracks_too_long"), numTooLong)
}
return retString, false, nil
}
// Execute executes the command with the given user and arguments.
// Return value descriptions:
// string: A message to be returned to the user upon successful execution.
// bool: Whether the message should be private or not. true = private,
// false = public (sent to whole channel).
// error: An error message to be returned upon unsuccessful execution.
// If no error has occurred, pass nil instead.
// Example return statement:
// return "This is a private message!", true, nil
func (c *ForceSkipPlaylistCommand) Execute(user *gumble.User, args ...string) (string, bool, error) {
var (
currentTrack interfaces.Track
err error
)
if currentTrack, err = DJ.Queue.CurrentTrack(); err != nil {
return "", true, errors.New(viper.GetString("commands.common_messages.no_tracks_error"))
}
if playlist := currentTrack.GetPlaylist(); playlist == nil {
return "", true, errors.New(viper.GetString("commands.forceskipplaylist.messages.no_playlist_error"))
}
DJ.Queue.SkipPlaylist()
return fmt.Sprintf(viper.GetString("commands.forceskipplaylist.messages.playlist_skipped"),
user.Name), false, nil
}
// Execute executes the command with the given user and arguments.
// Return value descriptions:
// string: A message to be returned to the user upon successful execution.
// bool: Whether the message should be private or not. true = private,
// false = public (sent to whole channel).
// error: An error message to be returned upon unsuccessful execution.
// If no error has occurred, pass nil instead.
// Example return statement:
// return "This is a private message!", true, nil
func (c *SkipPlaylistCommand) Execute(user *gumble.User, args ...string) (string, bool, error) {
var (
currentTrack interfaces.Track
err error
)
if currentTrack, err = DJ.Queue.CurrentTrack(); err != nil {
return "", true, errors.New(viper.GetString("commands.common_messages.no_tracks_error"))
}
if playlist := currentTrack.GetPlaylist(); playlist == nil {
return "", true, errors.New(viper.GetString("commands.skipplaylist.messages.no_playlist_error"))
}
if currentTrack.GetPlaylist().GetSubmitter() == user.Name {
DJ.Queue.SkipPlaylist()
return fmt.Sprintf(viper.GetString("commands.skipplaylist.messages.submitter_voted"), user.Name), false, nil
}
if err := DJ.Skips.AddPlaylistSkip(user); err != nil {
return "", true, errors.New(viper.GetString("commands.skipplaylist.messages.already_voted_error"))
}
return fmt.Sprintf(viper.GetString("commands.skipplaylist.messages.voted"), user.Name), false, nil
}
// Download downloads the audio associated with the incoming `track` object
// and stores it `track.Filename`.
func (yt *YouTubeDL) Download(t interfaces.Track) error {
player := "--prefer-ffmpeg"
if viper.GetString("defaults.player_command") == "avconv" {
player = "--prefer-avconv"
}
filepath := os.ExpandEnv(viper.GetString("cache.directory") + "/" + t.GetFilename())
// Determine which format to use.
format := "bestaudio"
for _, service := range DJ.AvailableServices {
if service.GetReadableName() == t.GetService() {
format = service.GetFormat()
}
}
// Check to see if track is already downloaded.
if _, err := os.Stat(filepath); os.IsNotExist(err) {
var cmd *exec.Cmd
if t.GetService() == "Mixcloud" {
cmd = exec.Command("youtube-dl", "--verbose", "--no-mtime", "--output", filepath, "--format", format, "--external-downloader", "aria2c", player, t.GetURL())
} else {
cmd = exec.Command("youtube-dl", "--verbose", "--no-mtime", "--output", filepath, "--format", format, player, t.GetURL())
}
output, err := cmd.CombinedOutput()
if err != nil {
args := ""
for s := range cmd.Args {
args += cmd.Args[s] + " "
}
logrus.Warnf("%s\n%s\nyoutube-dl: %s", args, string(output), err.Error())
return errors.New("Track download failed")
}
if viper.GetBool("cache.enabled") {
DJ.Cache.CheckDirectorySize()
}
}
return nil
}