Golang Track.GetService方法代码示例

// 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
}

// 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
}