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package bot |
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import ( |
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"errors" |
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"fmt" |
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"log" |
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"os/exec" |
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"strconv" |
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"github.com/bwmarrin/discordgo" |
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) |
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type ( |
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// Session structure with radio player and voice connection |
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Session struct { |
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Queue *SongQueue |
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Player RadioPlayer |
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guildID, ChannelID string |
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connection *Connection |
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Volume float32 |
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} |
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// SessionManager contains all sessions |
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SessionManager struct { |
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sessions map[string]*Session |
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} |
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// JoinProperties voice connection properties struct |
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JoinProperties struct { |
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Muted bool |
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Deafened bool |
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} |
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) |
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// Creates and returns new session |
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func newSession(newGuildID, newChannelID string, conn *Connection, volume float32) *Session { |
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session := &Session{ |
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Queue: newSongQueue(), |
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guildID: newGuildID, |
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ChannelID: newChannelID, |
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connection: conn, |
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Volume: volume, |
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} |
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return session |
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} |
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// GetConnection returns vice connection struct |
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func (sess *Session) GetConnection() *Connection { |
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return sess.connection |
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} |
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// Play starts to play the thing in source |
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func (sess *Session) Play(source string, volume float32) error { |
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ffmpeg := exec.Command("ffmpeg", "-i", source, "-f", "s16le", "-reconnect", "1", "-reconnect_at_eof", "1", "-reconnect_streamed", "1", "-reconnect_delay_max", "2", "-filter:a", fmt.Sprintf("volume=%.3f", volume), "-ar", strconv.Itoa(FRAME_RATE), "-ac", strconv.Itoa(CHANNELS), "pipe:1") |
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reader, err := ffmpeg.StdoutPipe() |
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if err != nil { |
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return err |
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} |
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err = ffmpeg.Start() |
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if err != nil { |
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return err |
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} |
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defer func() { |
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reader.Close() |
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fferr := ffmpeg.Process.Kill() |
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if fferr != nil { |
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fmt.Println("FFMPEG close err: ", fferr) |
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} |
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}() |
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return sess.connection.EncodeOpusAndSend(reader) |
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} |
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// Stop stops radio |
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func (sess *Session) Stop() { |
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sess.connection.Stop() |
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} |
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// NewSessionManager creates and returns new session manager |
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func NewSessionManager() *SessionManager { |
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return &SessionManager{make(map[string]*Session)} |
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} |
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// GetByGuild returns session by guild ID |
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func (manager *SessionManager) GetByGuild(guildID string) *Session { |
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for _, sess := range manager.sessions { |
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if sess.guildID == guildID { |
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return sess |
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} |
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} |
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return nil |
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} |
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// GetByChannel returns session by channel ID |
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func (manager *SessionManager) GetByChannel(channelID string) (*Session, bool) { |
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sess, found := manager.sessions[channelID] |
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return sess, found |
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} |
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func (manager *SessionManager) GetAll() map[string]*Session { |
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return manager.sessions |
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} |
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func (s *Session) IsOk() bool { |
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if s.connection.voiceConnection != nil { |
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if s.connection.voiceConnection.Ready == true { |
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return true |
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} |
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} |
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return false |
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} |
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// Join add bot to voice channel |
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func (manager *SessionManager) Join(discord *discordgo.Session, guildID, channelID string, |
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properties JoinProperties, volume float32) (*Session, error) { |
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vc, err := discord.ChannelVoiceJoin(guildID, channelID, properties.Muted, properties.Deafened) |
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if err != nil { |
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log.Println("Voice connection error: ", err) |
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if vc != nil { |
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err := vc.Disconnect() |
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if err != nil { |
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log.Println(err) |
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} |
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vc.Close() |
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} |
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return nil, err |
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} |
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log.Println("Voice joined") |
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if vc == nil { |
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return nil, errors.New("no voice connection") |
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} |
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if vc.Ready != true { |
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return nil, errors.New("voice connection not ready") |
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} |
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log.Println("Voice connection OK and Ready") |
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sess := newSession(guildID, channelID, NewConnection(vc), volume) |
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manager.sessions[channelID] = sess |
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log.Println("Voice session created and saved") |
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return sess, nil |
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} |
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// Leave remove bot from voice channel |
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func (manager *SessionManager) Leave(discord *discordgo.Session, session Session) { |
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session.connection.Stop() |
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session.connection.Disconnect() |
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delete(manager.sessions, session.ChannelID) |
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} |
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// Count returns count of voice sessions |
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func (manager *SessionManager) Count() int { |
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return len(manager.sessions) |
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} |
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func (manager *SessionManager) GetChannels() []string { |
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var ids []string |
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for _, s := range manager.sessions { |
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ids = append(ids, s.ChannelID) |
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} |
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return ids |
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} |
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func (manager *SessionManager) GetGuilds() []string { |
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var ids []string |
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for _, s := range manager.sessions { |
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ids = append(ids, s.guildID) |
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} |
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return ids |
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} |
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FlameInTheDark /
dtbot
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