refactor

discord dm
disable text messages for discord and mumble with option
list users connected to discord on connection to mumble

Makefile

@@ -1,4 +1,4 @@
-GOFILES=main.go mumble.go discord.go bridge.go config.go handlers.go
+GOFILES=main.go mumble.go discord.go bridge.go config.go mumble-handlers.go discord-handlers.go
 
 mumble-discord-bridge: $(GOFILES)
 	goreleaser build --skip-validate --rm-dist

README.md

@@ -11,29 +11,35 @@ All variables can be set using flags or in the environment.
 The binary will also attempt to load .env file located in the working directory.
 
 ```bash
-Usage of mumble-discord-bridge:
+Usage of ./mumble-discord-bridge:
   -discord-cid string
-        DISCORD_CID, discord channel ID
-  -discord-gid string
-        DISCORD_GID, discord guild ID
-  -discord-token string
-        DISCORD_TOKEN, discord bot token
+    	DISCORD_CID, discord cid, required
   -discord-command string
-	DISCORD_COMMAND, the string to look for when manually entering commands in Discord (in the form of !DISCORD_COMMAND)
-  -mumble-address string
-        MUMBLE_ADDRESS, mumble server address, example example.com
-  -mumble-password string
-        MUMBLE_PASSWORD, mumble password, optional
-  -mumble-port int
-        MUMBLE_PORT mumble port (default 64738)
-  -mumble-username string
-        MUMBLE_USERNAME, mumble username (default "discord-bridge")
-  -mumble-insecure bool
-        MUMBLE_INSECURE, allow connection to insecure (invalid TLS cert) mumble server
-  -mumble-channel string
-	MUMBLE_CHANNEL, pick what channel the bridge joins in Mumble. Must be a direct child of Root.
+    	DISCORD_COMMAND, Discord command string, env alt DISCORD_COMMAND, optional, (defaults mumble-discord) (default "mumble-discord")
+  -discord-disable-text
+    	DISCORD_DISABLE_TEXT, disable sending direct messages to discord, (default false)
+  -discord-gid string
+    	DISCORD_GID, discord gid, required
+  -discord-token string
+    	DISCORD_TOKEN, discord bot token, required
   -mode string
-	MODE, determines what mode the bridge starts in
+    	MODE, [constant, manual, auto] determine which mode the bridge starts in, (default constant) (default "constant")
+  -mumble-address string
+    	MUMBLE_ADDRESS, mumble server address, example example.com, required
+  -mumble-channel string
+    	MUMBLE_CHANNEL, mumble channel to start in, optional
+  -mumble-disable-text
+    	MUMBLE_DISABLE_TEXT, disable sending text to mumble, (default false)
+  -mumble-insecure
+    	 MUMBLE_INSECURE, mumble insecure, optional
+  -mumble-password string
+    	MUMBLE_PASSWORD, mumble password, optional
+  -mumble-port int
+    	MUMBLE_PORT, mumble port, (default 64738) (default 64738)
+  -mumble-username string
+    	MUMBLE_USERNAME, mumble username, (default: discord) (default "Discord")
+  -nice
+    	NICE, whether the bridge should automatically try to 'nice' itself, (default false)
 ```
 
 The bridge can be run with the follow modes:

bridge.go

@@ -5,183 +5,234 @@ import (
 	"fmt"
 	"log"
 	"net"
-	"os"
-	"os/signal"
 	"strconv"
+	"sync"
 	"time"
 
 	"github.com/bwmarrin/discordgo"
 	"layeh.com/gumble/gumble"
 )
 
-//BridgeState manages dynamic information about the bridge during runtime
-type BridgeState struct {
-	ActiveConn       chan bool
-	Connected        bool
-	Mode             bridgeMode
-	Client           *gumble.Client
-	DiscordUsers     map[string]bool
-	MumbleUsers      map[string]bool
-	MumbleUserCount  int
-	DiscordUserCount int
-	AutoChan         chan bool
+type discordUser struct {
+	username string
+	seen     bool
+	dm       *discordgo.Channel
 }
 
-func startBridge(discord *discordgo.Session, discordGID string, discordCID string, l *Listener, die chan bool) {
-	dgv, err := discord.ChannelVoiceJoin(discordGID, discordCID, false, false)
+//BridgeState manages dynamic information about the bridge during runtime
+type BridgeState struct {
+	// The configuration data for this bridge
+	BridgeConfig *BridgeConfig
+
+	// TODO
+	BridgeDie chan bool
+
+	// Bridge connection
+	Connected bool
+
+	// The bridge mode constant, auto, manual. Default is constant.
+	Mode bridgeMode
+
+	// Discord session. This is created and outside the bridge state
+	DiscordSession *discordgo.Session
+
+	// Discord voice connection. Empty if not connected.
+	DiscordVoice *discordgo.VoiceConnection
+
+	// Mumble client. Empty if not connected.
+	MumbleClient *gumble.Client
+
+	// Map of Discord users tracked by this bridge.
+	DiscordUsers      map[string]discordUser
+	DiscordUsersMutex sync.Mutex
+
+	// Map of Mumble users tracked by this bridge
+	MumbleUsers      map[string]bool
+	MumbleUsersMutex sync.Mutex
+
+	// Kill the auto connect routine
+	AutoChanDie chan bool
+
+	// Discord Duplex and Event Listener
+	DiscordStream   *DiscordDuplex
+	DiscordListener *DiscordListener
+
+	// Mumble Duplex and Event Listener
+	MumbleStream   *MumbleDuplex
+	MumbleListener *MumbleListener
+}
+
+// startBridge established the voice connection
+func (b *BridgeState) startBridge() {
+
+	b.BridgeDie = make(chan bool)
+
+	var err error
+
+	// DISCORD Connect Voice
+
+	b.DiscordVoice, err = b.DiscordSession.ChannelVoiceJoin(b.BridgeConfig.GID, b.BridgeConfig.CID, false, false)
 	if err != nil {
 		log.Println(err)
 		return
 	}
-	defer dgv.Speaking(false)
-	defer dgv.Close()
+	defer b.DiscordVoice.Speaking(false)
+	defer b.DiscordVoice.Close()
 
-	// MUMBLE Setup
+	// MUMBLE Connect
 
-	m := MumbleDuplex{
-		Close: make(chan bool),
+	b.MumbleStream = &MumbleDuplex{
+		die: b.BridgeDie,
 	}
+	det := b.BridgeConfig.MumbleConfig.AudioListeners.Attach(b.MumbleStream)
 
 	var tlsConfig tls.Config
-	if l.BridgeConf.MumbleInsecure {
+	if b.BridgeConfig.MumbleInsecure {
 		tlsConfig.InsecureSkipVerify = true
 	}
 
-	mumble, err := gumble.DialWithDialer(new(net.Dialer), l.BridgeConf.MumbleAddr, l.BridgeConf.Config, &tlsConfig)
+	b.MumbleClient, err = gumble.DialWithDialer(new(net.Dialer), b.BridgeConfig.MumbleAddr, b.BridgeConfig.MumbleConfig, &tlsConfig)
 
 	if err != nil {
 		log.Println(err)
 		return
 	}
-	defer mumble.Disconnect()
-	l.Bridge.Client = mumble
+	defer b.MumbleClient.Disconnect()
+
 	// Shared Channels
 	// Shared channels pass PCM information in 10ms chunks [480]int16
-	var toMumble = mumble.AudioOutgoing()
+	// These channels are internal and are not added to the bridge state.
+	var toMumble = b.MumbleClient.AudioOutgoing()
 	var toDiscord = make(chan []int16, 100)
 
 	log.Println("Mumble Connected")
 
 	// Start Passing Between
-	// Mumble
-	go m.fromMumbleMixer(toDiscord, die)
-	det := l.BridgeConf.Config.AudioListeners.Attach(m)
 
-	//Discord
-	go discordReceivePCM(dgv, die)
-	go fromDiscordMixer(toMumble, die)
-	go discordSendPCM(dgv, toDiscord, die)
-	c := make(chan os.Signal)
-	signal.Notify(c, os.Interrupt)
+	// From Mumble
+	go b.MumbleStream.fromMumbleMixer(toDiscord, b.BridgeDie)
+
+	// From Discord
+	b.DiscordStream = &DiscordDuplex{
+		Bridge:         b,
+		fromDiscordMap: make(map[uint32]fromDiscord),
+		die:            b.BridgeDie,
+	}
+
+	go b.DiscordStream.discordReceivePCM()
+	go b.DiscordStream.fromDiscordMixer(toMumble)
+
+	// To Discord
+	go b.DiscordStream.discordSendPCM(toDiscord)
 
 	go func() {
 		ticker := time.NewTicker(500 * time.Millisecond)
 		for {
 			<-ticker.C
-			if mumble.State() != 2 {
-				log.Println("Lost mumble connection " + strconv.Itoa(int(mumble.State())))
+			if b.MumbleClient.State() != 2 {
+				log.Println("Lost mumble connection " + strconv.Itoa(int(b.MumbleClient.State())))
 				select {
 				default:
-					close(die)
-				case <-die:
+					close(b.BridgeDie)
+				case <-b.BridgeDie:
 					//die is already closed
 				}
-
-				select {
-				default:
-					close(m.Close)
-				case <-m.Close:
-					//m.Close is already closed
-				}
-				return
 			}
 		}
 	}()
-	l.ConnectedLock.Lock()
-	l.Bridge.Connected = true
-	l.ConnectedLock.Unlock()
+
+	b.Connected = true
 
 	select {
-	case sig := <-c:
-		log.Printf("\nGot %s signal. Terminating Mumble-Bridge\n", sig)
-	case <-die:
+	case <-b.BridgeDie:
 		log.Println("\nGot internal die request. Terminating Mumble-Bridge")
-		dgv.Disconnect()
+		b.DiscordVoice.Disconnect()
 		det.Detach()
-		close(die)
-		close(m.Close)
+		close(toDiscord)
 		close(toMumble)
-		l.Bridge.Connected = false
-		l.Bridge.Client = nil
-		l.Bridge.MumbleUserCount = 0
-		l.Bridge.MumbleUsers = make(map[string]bool)
-		l.Bridge.DiscordUserCount = 0
-		l.Bridge.DiscordUsers = make(map[string]bool)
+		b.Connected = false
+		b.DiscordVoice = nil
+		b.MumbleClient = nil
+		b.MumbleUsers = make(map[string]bool)
+		b.DiscordUsers = make(map[string]discordUser)
 	}
 }
 
-func discordStatusUpdate(dg *discordgo.Session, host, port string, l *Listener) {
-	status := ""
-	curr := 0
+func (b *BridgeState) discordStatusUpdate() {
 	m, _ := time.ParseDuration("30s")
 	for {
 		time.Sleep(3 * time.Second)
-		resp, err := gumble.Ping(host+":"+port, -1, m)
+		resp, err := gumble.Ping(b.BridgeConfig.MumbleAddr, -1, m)
+		status := ""
 
 		if err != nil {
 			log.Printf("error pinging mumble server %v\n", err)
-			dg.UpdateListeningStatus("an error pinging mumble")
+			b.DiscordSession.UpdateListeningStatus("an error pinging mumble")
 		} else {
-			l.UserCountLock.Lock()
-			l.ConnectedLock.Lock()
-			curr = resp.ConnectedUsers
-			if l.Bridge.Connected {
-				curr = curr - 1
+			b.MumbleUsersMutex.Lock()
+			userCount := resp.ConnectedUsers
+			if b.Connected {
+				userCount = userCount - 1
 			}
-			if curr != l.Bridge.MumbleUserCount {
-				l.Bridge.MumbleUserCount = curr
-			}
-			if curr == 0 {
-				status = ""
+			if userCount == 0 {
+				status = "No users in Mumble"
 			} else {
-				if len(l.Bridge.MumbleUsers) > 0 {
-					status = fmt.Sprintf("%v/%v users in Mumble\n", len(l.Bridge.MumbleUsers), curr)
+				if len(b.MumbleUsers) > 0 {
+					status = fmt.Sprintf("%v/%v users in Mumble\n", len(b.MumbleUsers), userCount)
 				} else {
-					status = fmt.Sprintf("%v users in Mumble\n", curr)
+					status = fmt.Sprintf("%v users in Mumble\n", userCount)
 				}
 			}
-			l.ConnectedLock.Unlock()
-			l.UserCountLock.Unlock()
-			dg.UpdateListeningStatus(status)
+			b.MumbleUsersMutex.Unlock()
+			b.DiscordSession.UpdateListeningStatus(status)
 		}
 	}
 }
 
-//AutoBridge starts a goroutine to check the number of users in discord and mumble
-//when there is at least one user on both, starts up the bridge
-//when there are no users on either side, kills the bridge
-func AutoBridge(s *discordgo.Session, l *Listener) {
+// AutoBridge starts a goroutine to check the number of users in discord and mumble
+// when there is at least one user on both, starts up the bridge
+// when there are no users on either side, kills the bridge
+func (b *BridgeState) AutoBridge() {
 	log.Println("beginning auto mode")
+	ticker := time.NewTicker(3 * time.Second)
+
 	for {
 		select {
-		default:
-		case <-l.Bridge.AutoChan:
+		case <-ticker.C:
+		case <-b.AutoChanDie:
 			log.Println("ending automode")
 			return
 		}
-		time.Sleep(3 * time.Second)
-		l.UserCountLock.Lock()
-		if !l.Bridge.Connected && l.Bridge.MumbleUserCount > 0 && l.Bridge.DiscordUserCount > 0 {
+
+		b.MumbleUsersMutex.Lock()
+		b.DiscordUsersMutex.Lock()
+
+		if !b.Connected && len(b.MumbleUsers) > 0 && len(b.DiscordUsers) > 0 {
 			log.Println("users detected in mumble and discord, bridging")
-			die := make(chan bool)
-			l.Bridge.ActiveConn = die
-			go startBridge(s, l.BridgeConf.GID, l.BridgeConf.CID, l, die)
+			go b.startBridge()
 		}
-		if l.Bridge.Connected && l.Bridge.MumbleUserCount == 0 && l.Bridge.DiscordUserCount <= 1 {
+		if b.Connected && len(b.MumbleUsers) == 0 && len(b.DiscordUsers) <= 1 {
 			log.Println("no one online, killing bridge")
-			l.Bridge.ActiveConn <- true
-			l.Bridge.ActiveConn = nil
+			b.BridgeDie <- true
+			b.BridgeDie = nil
 		}
-		l.UserCountLock.Unlock()
+
+		b.MumbleUsersMutex.Unlock()
+		b.DiscordUsersMutex.Unlock()
 	}
 }
+
+func (b *BridgeState) discordSendMessageAll(msg string) {
+	if b.BridgeConfig.DiscordDisableText {
+		return
+	}
+
+	b.DiscordUsersMutex.Lock()
+	for id := range b.DiscordUsers {
+		du := b.DiscordUsers[id]
+		if du.dm != nil {
+			b.DiscordSession.ChannelMessageSend(du.dm.ID, msg)
+		}
+	}
+	b.DiscordUsersMutex.Unlock()
+}

config.go

@@ -21,13 +21,15 @@ const (
 //BridgeConfig holds configuration information set at startup
 //It should not change during runtime
 type BridgeConfig struct {
-	Config         *gumble.Config
-	MumbleAddr     string
-	MumbleInsecure bool
-	MumbleChannel  string
-	Command        string
-	GID            string
-	CID            string
+	MumbleConfig       *gumble.Config
+	MumbleAddr         string
+	MumbleInsecure     bool
+	MumbleChannel      string
+	MumbleDisableText  bool
+	Command            string
+	GID                string
+	CID                string
+	DiscordDisableText bool
 }
 
 func lookupEnvOrString(key string, defaultVal string) string {

discord-handlers.go

@@ -0,0 +1,227 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"strings"
+	"time"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+// DiscordListener holds references to the current BridgeConf
+// and BridgeState for use by the event handlers
+type DiscordListener struct {
+	Bridge *BridgeState
+}
+
+func (l *DiscordListener) ready(s *discordgo.Session, event *discordgo.Ready) {
+	log.Println("READY event registered")
+
+	//Setup initial discord state
+	var g *discordgo.Guild
+	g = nil
+
+	for _, i := range event.Guilds {
+		if i.ID == l.Bridge.BridgeConfig.GID {
+			g = i
+		}
+	}
+
+	if g == nil {
+		log.Println("bad guild on READY")
+		return
+	}
+
+	for _, vs := range g.VoiceStates {
+		if vs.ChannelID == l.Bridge.BridgeConfig.CID {
+
+			u, err := s.User(vs.UserID)
+			if err != nil {
+				log.Println("error looking up username")
+			}
+
+			dm, err := s.UserChannelCreate(u.ID)
+			if err != nil {
+				log.Println("Error creating private channel for", u.Username)
+			}
+
+			l.Bridge.DiscordUsersMutex.Lock()
+			l.Bridge.DiscordUsers[vs.UserID] = discordUser{
+				username: u.Username,
+				seen:     true,
+				dm:       dm,
+			}
+			l.Bridge.DiscordUsersMutex.Unlock()
+
+			// If connected to mumble inform users of Discord users
+			if l.Bridge.Connected && !l.Bridge.BridgeConfig.MumbleDisableText {
+				l.Bridge.MumbleClient.Do(func() {
+					l.Bridge.MumbleClient.Self.Channel.Send(fmt.Sprintf("%v has joined Discord\n", u.Username), false)
+				})
+			}
+
+		}
+	}
+}
+
+func (l *DiscordListener) messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
+
+	if l.Bridge.Mode == bridgeModeConstant {
+		return
+	}
+
+	// Ignore all messages created by the bot itself
+	if m.Author.ID == s.State.User.ID {
+		return
+	}
+	// Find the channel that the message came from.
+	c, err := s.State.Channel(m.ChannelID)
+	if err != nil {
+		// Could not find channel.
+		return
+	}
+
+	// Find the guild for that channel.
+	g, err := s.State.Guild(c.GuildID)
+	if err != nil {
+		// Could not find guild.
+		return
+	}
+	prefix := "!" + l.Bridge.BridgeConfig.Command
+	if strings.HasPrefix(m.Content, prefix+" link") {
+		// Look for the message sender in that guild's current voice states.
+		for _, vs := range g.VoiceStates {
+			if vs.UserID == m.Author.ID {
+				log.Printf("Trying to join GID %v and VID %v\n", g.ID, vs.ChannelID)
+				go l.Bridge.startBridge()
+				return
+			}
+		}
+	}
+
+	if strings.HasPrefix(m.Content, prefix+" unlink") {
+		// Look for the message sender in that guild's current voice states.
+		for _, vs := range g.VoiceStates {
+			if vs.UserID == m.Author.ID {
+				log.Printf("Trying to leave GID %v and VID %v\n", g.ID, vs.ChannelID)
+				l.Bridge.BridgeDie <- true
+				l.Bridge.BridgeDie = nil
+				return
+			}
+		}
+	}
+
+	if strings.HasPrefix(m.Content, prefix+" refresh") {
+		// Look for the message sender in that guild's current voice states.
+		for _, vs := range g.VoiceStates {
+			if vs.UserID == m.Author.ID {
+				log.Printf("Trying to refresh GID %v and VID %v\n", g.ID, vs.ChannelID)
+				l.Bridge.BridgeDie <- true
+
+				time.Sleep(5 * time.Second)
+
+				go l.Bridge.startBridge()
+				return
+			}
+		}
+	}
+
+	if strings.HasPrefix(m.Content, prefix+" auto") {
+		if l.Bridge.Mode != bridgeModeAuto {
+			l.Bridge.Mode = bridgeModeAuto
+			l.Bridge.AutoChanDie = make(chan bool)
+			go l.Bridge.AutoBridge()
+		} else {
+			l.Bridge.AutoChanDie <- true
+			l.Bridge.Mode = bridgeModeManual
+		}
+	}
+}
+
+func (l *DiscordListener) guildCreate(s *discordgo.Session, event *discordgo.GuildCreate) {
+
+	if event.Guild.Unavailable {
+		return
+	}
+
+	for _, channel := range event.Guild.Channels {
+		if channel.ID == event.Guild.ID {
+			log.Println("Mumble-Discord bridge is active in new guild")
+			return
+		}
+	}
+}
+
+func (l *DiscordListener) voiceUpdate(s *discordgo.Session, event *discordgo.VoiceStateUpdate) {
+	l.Bridge.DiscordUsersMutex.Lock()
+	defer l.Bridge.DiscordUsersMutex.Unlock()
+
+	if event.GuildID == l.Bridge.BridgeConfig.GID {
+
+		g, err := s.State.Guild(l.Bridge.BridgeConfig.GID)
+		if err != nil {
+			log.Println("error finding guild")
+			panic(err)
+		}
+
+		for u := range l.Bridge.DiscordUsers {
+			du := l.Bridge.DiscordUsers[u]
+			du.seen = false
+			l.Bridge.DiscordUsers[u] = du
+		}
+
+		// Sync the channel voice states to the local discordUsersMap
+		for _, vs := range g.VoiceStates {
+			if vs.ChannelID == l.Bridge.BridgeConfig.CID {
+				if s.State.User.ID == vs.UserID {
+					// Ignore bot
+					continue
+				}
+
+				if _, ok := l.Bridge.DiscordUsers[vs.UserID]; !ok {
+
+					u, err := s.User(vs.UserID)
+					if err != nil {
+						log.Println("error looking up username")
+						continue
+					}
+
+					println("User joined Discord " + u.Username)
+					dm, err := s.UserChannelCreate(u.ID)
+					if err != nil {
+						log.Println("Error creating private channel for", u.Username)
+					}
+					l.Bridge.DiscordUsers[vs.UserID] = discordUser{
+						username: u.Username,
+						seen:     true,
+						dm:       dm,
+					}
+					if l.Bridge.Connected && !l.Bridge.BridgeConfig.MumbleDisableText {
+						l.Bridge.MumbleClient.Do(func() {
+							l.Bridge.MumbleClient.Self.Channel.Send(fmt.Sprintf("%v has joined Discord\n", u.Username), false)
+						})
+					}
+				} else {
+					du := l.Bridge.DiscordUsers[vs.UserID]
+					du.seen = true
+					l.Bridge.DiscordUsers[vs.UserID] = du
+				}
+
+			}
+		}
+
+		// Remove users that are no longer connected
+		for id := range l.Bridge.DiscordUsers {
+			if l.Bridge.DiscordUsers[id].seen == false {
+				println("User left Discord channel " + l.Bridge.DiscordUsers[id].username)
+				if l.Bridge.Connected && !l.Bridge.BridgeConfig.MumbleDisableText {
+					l.Bridge.MumbleClient.Do(func() {
+						l.Bridge.MumbleClient.Self.Channel.Send(fmt.Sprintf("%v has left Discord channel\n", l.Bridge.DiscordUsers[id].username), false)
+					})
+				}
+				delete(l.Bridge.DiscordUsers, id)
+			}
+		}
+	}
+}

discord.go

@@ -18,9 +18,16 @@ type fromDiscord struct {
 	streaming bool
 }
 
-var discordMutex sync.Mutex
-var discordMixerMutex sync.Mutex
-var fromDiscordMap = make(map[uint32]fromDiscord)
+// DiscordDuplex Handle discord voice stream
+type DiscordDuplex struct {
+	Bridge *BridgeState
+
+	discordMutex      sync.Mutex
+	discordMixerMutex sync.Mutex
+	fromDiscordMap    map[uint32]fromDiscord
+
+	die chan bool
+}
 
 // OnError gets called by dgvoice when an error is encountered.
 // By default logs to STDERR
@@ -36,7 +43,7 @@ var OnError = func(str string, err error) {
 
 // SendPCM will receive on the provied channel encode
 // received PCM data into Opus then send that to Discordgo
-func discordSendPCM(v *discordgo.VoiceConnection, pcm <-chan []int16, die chan bool) {
+func (dd *DiscordDuplex) discordSendPCM(pcm <-chan []int16) {
 	const channels int = 1
 	const frameRate int = 48000              // audio sampling rate
 	const frameSize int = 960                // uint16 size of each audio frame
@@ -57,7 +64,7 @@ func discordSendPCM(v *discordgo.VoiceConnection, pcm <-chan []int16, die chan b
 
 	for {
 		select {
-		case <-die:
+		case <-dd.die:
 			log.Println("Killing discordSendPCM")
 			return
 		default:
@@ -65,7 +72,7 @@ func discordSendPCM(v *discordgo.VoiceConnection, pcm <-chan []int16, die chan b
 		<-ticker.C
 		if len(pcm) > 1 {
 			if !streaming {
-				v.Speaking(true)
+				dd.Bridge.DiscordVoice.Speaking(true)
 				streaming = true
 			}
 
@@ -79,11 +86,11 @@ func discordSendPCM(v *discordgo.VoiceConnection, pcm <-chan []int16, die chan b
 				continue
 			}
 
-			if v.Ready == false || v.OpusSend == nil {
+			if dd.Bridge.DiscordVoice.Ready == false || dd.Bridge.DiscordVoice.OpusSend == nil {
 				if lastReady == true {
-					OnError(fmt.Sprintf("Discordgo not ready for opus packets. %+v : %+v", v.Ready, v.OpusSend), nil)
+					OnError(fmt.Sprintf("Discordgo not ready for opus packets. %+v : %+v", dd.Bridge.DiscordVoice.Ready, dd.Bridge.DiscordVoice.OpusSend), nil)
 					readyTimeout = time.AfterFunc(30*time.Second, func() {
-						die <- true
+						dd.die <- true
 					})
 					lastReady = false
 				}
@@ -93,10 +100,10 @@ func discordSendPCM(v *discordgo.VoiceConnection, pcm <-chan []int16, die chan b
 				lastReady = true
 				readyTimeout.Stop()
 			}
-			v.OpusSend <- opus
+			dd.Bridge.DiscordVoice.OpusSend <- opus
 		} else {
 			if streaming {
-				v.Speaking(false)
+				dd.Bridge.DiscordVoice.Speaking(false)
 				streaming = false
 			}
 		}
@@ -105,25 +112,19 @@ func discordSendPCM(v *discordgo.VoiceConnection, pcm <-chan []int16, die chan b
 
 // ReceivePCM will receive on the the Discordgo OpusRecv channel and decode
 // the opus audio into PCM then send it on the provided channel.
-func discordReceivePCM(v *discordgo.VoiceConnection, die chan bool) {
+func (dd *DiscordDuplex) discordReceivePCM() {
 	var err error
 
 	lastReady := true
 	var readyTimeout *time.Timer
 
 	for {
-		select {
-		case <-die:
-			log.Println("killing discord ReceivePCM")
-			return
-		default:
-		}
-		if v.Ready == false || v.OpusRecv == nil {
+		if dd.Bridge.DiscordVoice.Ready == false || dd.Bridge.DiscordVoice.OpusRecv == nil {
 			if lastReady == true {
-				OnError(fmt.Sprintf("Discordgo not to receive opus packets. %+v : %+v", v.Ready, v.OpusSend), nil)
+				OnError(fmt.Sprintf("Discordgo not to receive opus packets. %+v : %+v", dd.Bridge.DiscordVoice.Ready, dd.Bridge.DiscordVoice.OpusSend), nil)
 				readyTimeout = time.AfterFunc(30*time.Second, func() {
 					log.Println("set ready timeout")
-					die <- true
+					dd.die <- true
 				})
 				lastReady = false
 			}
@@ -133,22 +134,25 @@ func discordReceivePCM(v *discordgo.VoiceConnection, die chan bool) {
 			lastReady = true
 			readyTimeout.Stop()
 		}
+
 		var ok bool
 		var p *discordgo.Packet
+
 		select {
-		case p, ok = <-v.OpusRecv:
-		case <-die:
+		case p, ok = <-dd.Bridge.DiscordVoice.OpusRecv:
+		case <-dd.die:
 			log.Println("killing discord ReceivePCM")
 			return
 		}
+
 		if !ok {
 			log.Println("Opus not ok")
 			continue
 		}
 
-		discordMutex.Lock()
-		_, ok = fromDiscordMap[p.SSRC]
-		discordMutex.Unlock()
+		dd.discordMutex.Lock()
+		_, ok = dd.fromDiscordMap[p.SSRC]
+		dd.discordMutex.Unlock()
 		if !ok {
 			newStream := fromDiscord{}
 			newStream.pcm = make(chan []int16, 100)
@@ -158,14 +162,14 @@ func discordReceivePCM(v *discordgo.VoiceConnection, die chan bool) {
 				OnError("error creating opus decoder", err)
 				continue
 			}
-			discordMutex.Lock()
-			fromDiscordMap[p.SSRC] = newStream
-			discordMutex.Unlock()
+			dd.discordMutex.Lock()
+			dd.fromDiscordMap[p.SSRC] = newStream
+			dd.discordMutex.Unlock()
 		}
 
-		discordMutex.Lock()
-		p.PCM, err = fromDiscordMap[p.SSRC].decoder.Decode(p.Opus, 960, false)
-		discordMutex.Unlock()
+		dd.discordMutex.Lock()
+		p.PCM, err = dd.fromDiscordMap[p.SSRC].decoder.Decode(p.Opus, 960, false)
+		dd.discordMutex.Unlock()
 		if err != nil {
 			OnError("Error decoding opus data", err)
 			continue
@@ -175,62 +179,62 @@ func discordReceivePCM(v *discordgo.VoiceConnection, die chan bool) {
 			continue
 		}
 
-		discordMutex.Lock()
+		dd.discordMutex.Lock()
 		select {
-		case fromDiscordMap[p.SSRC].pcm <- p.PCM[0:480]:
+		case dd.fromDiscordMap[p.SSRC].pcm <- p.PCM[0:480]:
 		default:
 			log.Println("fromDiscordMap buffer full. Dropping packet")
-			discordMutex.Unlock()
+			dd.discordMutex.Unlock()
 			continue
 		}
 		select {
-		case fromDiscordMap[p.SSRC].pcm <- p.PCM[480:960]:
+		case dd.fromDiscordMap[p.SSRC].pcm <- p.PCM[480:960]:
 		default:
 			log.Println("fromDiscordMap buffer full. Dropping packet")
 		}
-		discordMutex.Unlock()
+		dd.discordMutex.Unlock()
 	}
 }
 
-func fromDiscordMixer(toMumble chan<- gumble.AudioBuffer, die chan bool) {
+func (dd *DiscordDuplex) fromDiscordMixer(toMumble chan<- gumble.AudioBuffer) {
 	ticker := time.NewTicker(10 * time.Millisecond)
 	sendAudio := false
 
 	for {
 		select {
-		case <-die:
+		case <-dd.die:
 			log.Println("killing fromDiscordMixer")
 			return
-		default:
+		case <-ticker.C:
 		}
-		<-ticker.C
-		discordMutex.Lock()
+
+		dd.discordMutex.Lock()
 
 		sendAudio = false
 		internalMixerArr := make([][]int16, 0)
 
 		// Work through each channel
-		for i := range fromDiscordMap {
-			if len(fromDiscordMap[i].pcm) > 0 {
+		for i := range dd.fromDiscordMap {
+			if len(dd.fromDiscordMap[i].pcm) > 0 {
 				sendAudio = true
-				if fromDiscordMap[i].streaming == false {
-					x := fromDiscordMap[i]
+				if dd.fromDiscordMap[i].streaming == false {
+					x := dd.fromDiscordMap[i]
 					x.streaming = true
-					fromDiscordMap[i] = x
+					dd.fromDiscordMap[i] = x
 				}
 
-				x1 := (<-fromDiscordMap[i].pcm)
+				x1 := (<-dd.fromDiscordMap[i].pcm)
 				internalMixerArr = append(internalMixerArr, x1)
 			} else {
-				if fromDiscordMap[i].streaming == true {
-					x := fromDiscordMap[i]
+				if dd.fromDiscordMap[i].streaming == true {
+					x := dd.fromDiscordMap[i]
 					x.streaming = false
-					fromDiscordMap[i] = x
+					dd.fromDiscordMap[i] = x
 				}
 			}
 		}
 
-		discordMutex.Unlock()
+		dd.discordMutex.Unlock()
 
 		outBuf := make([]int16, 480)
 

handlers.go

@@ -1,236 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/bwmarrin/discordgo"
-	"layeh.com/gumble/gumble"
-)
-
-//Listener holds references to the current BridgeConf
-//and BridgeState for use by the event handlers
-type Listener struct {
-	BridgeConf    *BridgeConfig
-	Bridge        *BridgeState
-	UserCountLock *sync.Mutex
-	ConnectedLock *sync.Mutex
-}
-
-func (l *Listener) ready(s *discordgo.Session, event *discordgo.Ready) {
-	log.Println("READY event registered")
-	//Setup initial discord state
-	var g *discordgo.Guild
-	g = nil
-	for _, i := range event.Guilds {
-		if i.ID == l.BridgeConf.GID {
-			g = i
-		}
-	}
-	if g == nil {
-		log.Println("bad guild on READY")
-		return
-	}
-	for _, vs := range g.VoiceStates {
-		if vs.ChannelID == l.BridgeConf.CID {
-			l.UserCountLock.Lock()
-			l.Bridge.DiscordUserCount = l.Bridge.DiscordUserCount + 1
-			u, err := s.User(vs.UserID)
-			if err != nil {
-				log.Println("error looking up username")
-			}
-			l.Bridge.DiscordUsers[u.Username] = true
-			if l.Bridge.Connected {
-				l.Bridge.Client.Do(func() {
-					l.Bridge.Client.Self.Channel.Send(fmt.Sprintf("%v has joined Discord channel\n", u.Username), false)
-				})
-			}
-			l.UserCountLock.Unlock()
-		}
-	}
-}
-
-func (l *Listener) messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
-
-	if l.Bridge.Mode == bridgeModeConstant {
-		return
-	}
-
-	// Ignore all messages created by the bot itself
-	if m.Author.ID == s.State.User.ID {
-		return
-	}
-	// Find the channel that the message came from.
-	c, err := s.State.Channel(m.ChannelID)
-	if err != nil {
-		// Could not find channel.
-		return
-	}
-
-	// Find the guild for that channel.
-	g, err := s.State.Guild(c.GuildID)
-	if err != nil {
-		// Could not find guild.
-		return
-	}
-	prefix := "!" + l.BridgeConf.Command
-	if strings.HasPrefix(m.Content, prefix+" link") {
-		// Look for the message sender in that guild's current voice states.
-		for _, vs := range g.VoiceStates {
-			if vs.UserID == m.Author.ID {
-				log.Printf("Trying to join GID %v and VID %v\n", g.ID, vs.ChannelID)
-				die := make(chan bool)
-				l.Bridge.ActiveConn = die
-				go startBridge(s, g.ID, vs.ChannelID, l, die)
-				return
-			}
-		}
-	}
-
-	if strings.HasPrefix(m.Content, prefix+" unlink") {
-		// Look for the message sender in that guild's current voice states.
-		for _, vs := range g.VoiceStates {
-			if vs.UserID == m.Author.ID {
-				log.Printf("Trying to leave GID %v and VID %v\n", g.ID, vs.ChannelID)
-				l.Bridge.ActiveConn <- true
-				l.Bridge.ActiveConn = nil
-				return
-			}
-		}
-	}
-
-	if strings.HasPrefix(m.Content, prefix+" refresh") {
-		// Look for the message sender in that guild's current voice states.
-		for _, vs := range g.VoiceStates {
-			if vs.UserID == m.Author.ID {
-				log.Printf("Trying to refresh GID %v and VID %v\n", g.ID, vs.ChannelID)
-				l.Bridge.ActiveConn <- true
-				time.Sleep(5 * time.Second)
-				l.Bridge.ActiveConn = make(chan bool)
-				go startBridge(s, g.ID, vs.ChannelID, l, l.Bridge.ActiveConn)
-				return
-			}
-		}
-	}
-
-	if strings.HasPrefix(m.Content, prefix+" auto") {
-		if l.Bridge.Mode != bridgeModeAuto {
-			l.Bridge.Mode = bridgeModeAuto
-			l.Bridge.AutoChan = make(chan bool)
-			go AutoBridge(s, l)
-		} else {
-			l.Bridge.AutoChan <- true
-			l.Bridge.Mode = bridgeModeManual
-		}
-	}
-}
-
-func (l *Listener) guildCreate(s *discordgo.Session, event *discordgo.GuildCreate) {
-
-	if event.Guild.Unavailable {
-		return
-	}
-
-	for _, channel := range event.Guild.Channels {
-		if channel.ID == event.Guild.ID {
-			log.Println("Mumble-Discord bridge is active in new guild")
-			return
-		}
-	}
-}
-
-func (l *Listener) voiceUpdate(s *discordgo.Session, event *discordgo.VoiceStateUpdate) {
-	l.UserCountLock.Lock()
-	if event.GuildID == l.BridgeConf.GID {
-		if event.ChannelID == l.BridgeConf.CID {
-			//get user
-			u, err := s.User(event.UserID)
-			if err != nil {
-				log.Printf("error looking up user for uid %v", event.UserID)
-			}
-			//check to see if actually new user
-			if l.Bridge.DiscordUsers[u.Username] {
-				//not actually new user
-				l.UserCountLock.Unlock()
-				return
-			}
-			log.Println("user joined watched discord channel")
-			l.ConnectedLock.Lock()
-			if l.Bridge.Connected {
-				l.Bridge.Client.Do(func() {
-					l.Bridge.Client.Self.Channel.Send(fmt.Sprintf("%v has joined Discord channel\n", u.Username), false)
-				})
-			}
-			l.ConnectedLock.Unlock()
-			l.Bridge.DiscordUsers[u.Username] = true
-			l.Bridge.DiscordUserCount = l.Bridge.DiscordUserCount + 1
-			l.UserCountLock.Unlock()
-		}
-		if event.ChannelID == "" {
-			//leave event, trigger recount of active users
-			//TODO when next version of discordgo comes out, switch to PreviousState
-			g, err := s.State.Guild(event.GuildID)
-			if err != nil {
-				// Could not find guild.
-				l.UserCountLock.Unlock()
-				return
-			}
-
-			// Look for current voice states in watched channel
-			count := 0
-			for _, vs := range g.VoiceStates {
-				if vs.ChannelID == l.BridgeConf.CID {
-					count = count + 1
-				}
-			}
-			if l.Bridge.DiscordUserCount > count {
-				u, err := s.User(event.UserID)
-				if err != nil {
-					log.Printf("error looking up user for uid %v", event.UserID)
-				}
-				delete(l.Bridge.DiscordUsers, u.Username)
-				log.Println("user left watched discord channel")
-				l.ConnectedLock.Lock()
-				if l.Bridge.Connected {
-					l.Bridge.Client.Do(func() {
-						l.Bridge.Client.Self.Channel.Send(fmt.Sprintf("%v has left Discord channel\n", u.Username), false)
-					})
-				}
-				l.ConnectedLock.Unlock()
-				l.Bridge.DiscordUserCount = count
-			}
-			l.UserCountLock.Unlock()
-		}
-
-	}
-	return
-}
-
-func (l *Listener) mumbleConnect(e *gumble.ConnectEvent) {
-	if l.BridgeConf.MumbleChannel != "" {
-		//join specified channel
-		startingChannel := e.Client.Channels.Find(l.BridgeConf.MumbleChannel)
-		if startingChannel != nil {
-			e.Client.Self.Move(startingChannel)
-		}
-	}
-}
-
-func (l *Listener) mumbleUserChange(e *gumble.UserChangeEvent) {
-	l.UserCountLock.Lock()
-	if e.Type.Has(gumble.UserChangeConnected) || e.Type.Has(gumble.UserChangeChannel) || e.Type.Has(gumble.UserChangeDisconnected) {
-		l.Bridge.MumbleUsers = make(map[string]bool)
-		for _, user := range l.Bridge.Client.Self.Channel.Users {
-			//note, this might be too slow for really really big channels?
-			//event listeners block while processing
-			//also probably bad to rebuild the set every user change.
-			if user.Name != l.Bridge.Client.Self.Name {
-				l.Bridge.MumbleUsers[user.Name] = true
-			}
-		}
-	}
-	l.UserCountLock.Unlock()
-}

main.go

@@ -2,12 +2,12 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"log"
 	"os"
 	"os/signal"
 	"runtime/pprof"
 	"strconv"
-	"sync"
 	"syscall"
 	"time"
 
@@ -26,23 +26,27 @@ var (
 )
 
 func main() {
-	log.Println("Mumble-Discord-Bridge")
-	log.Println("v" + version + " " + commit + " " + date)
+	var err error
+
+	fmt.Println("Mumble-Discord-Bridge")
+	fmt.Println("v" + version + " " + commit + " " + date)
 
 	godotenv.Load()
 
-	mumbleAddr := flag.String("mumble-address", lookupEnvOrString("MUMBLE_ADDRESS", ""), "MUMBLE_ADDRESS, mumble server address, example example.com")
-	mumblePort := flag.Int("mumble-port", lookupEnvOrInt("MUMBLE_PORT", 64738), "MUMBLE_PORT mumble port")
-	mumbleUsername := flag.String("mumble-username", lookupEnvOrString("MUMBLE_USERNAME", "Discord"), "MUMBLE_USERNAME, mumble username")
+	mumbleAddr := flag.String("mumble-address", lookupEnvOrString("MUMBLE_ADDRESS", ""), "MUMBLE_ADDRESS, mumble server address, example example.com, required")
+	mumblePort := flag.Int("mumble-port", lookupEnvOrInt("MUMBLE_PORT", 64738), "MUMBLE_PORT, mumble port, (default 64738)")
+	mumbleUsername := flag.String("mumble-username", lookupEnvOrString("MUMBLE_USERNAME", "Discord"), "MUMBLE_USERNAME, mumble username, (default: discord)")
 	mumblePassword := flag.String("mumble-password", lookupEnvOrString("MUMBLE_PASSWORD", ""), "MUMBLE_PASSWORD, mumble password, optional")
-	mumbleInsecure := flag.Bool("mumble-insecure", lookupEnvOrBool("MUMBLE_INSECURE", false), "mumble insecure,  env alt MUMBLE_INSECURE")
-	mumbleChannel := flag.String("mumble-channel", lookupEnvOrString("MUMBLE_CHANNEL", ""), "mumble channel to start in")
-	discordToken := flag.String("discord-token", lookupEnvOrString("DISCORD_TOKEN", ""), "DISCORD_TOKEN, discord bot token")
-	discordGID := flag.String("discord-gid", lookupEnvOrString("DISCORD_GID", ""), "DISCORD_GID, discord gid")
-	discordCID := flag.String("discord-cid", lookupEnvOrString("DISCORD_CID", ""), "DISCORD_CID, discord cid")
-	discordCommand := flag.String("discord-command", lookupEnvOrString("DISCORD_COMMAND", "mumble-discord"), "DISCORD_COMMAND,Discord command string, env alt DISCORD_COMMAND, optional, defaults to mumble-discord")
-	mode := flag.String("mode", lookupEnvOrString("MODE", "constant"), "MODE,determine which mode the bridge starts in")
-	nice := flag.Bool("nice", lookupEnvOrBool("NICE", false), "NICE,whether the bridge should automatically try to 'nice' itself")
+	mumbleInsecure := flag.Bool("mumble-insecure", lookupEnvOrBool("MUMBLE_INSECURE", false), " MUMBLE_INSECURE, mumble insecure, optional")
+	mumbleChannel := flag.String("mumble-channel", lookupEnvOrString("MUMBLE_CHANNEL", ""), "MUMBLE_CHANNEL, mumble channel to start in, optional")
+	mumbleDisableText := flag.Bool("mumble-disable-text", lookupEnvOrBool("MUMBLE_DISABLE_TEXT", false), "MUMBLE_DISABLE_TEXT, disable sending text to mumble, (default false)")
+	discordToken := flag.String("discord-token", lookupEnvOrString("DISCORD_TOKEN", ""), "DISCORD_TOKEN, discord bot token, required")
+	discordGID := flag.String("discord-gid", lookupEnvOrString("DISCORD_GID", ""), "DISCORD_GID, discord gid, required")
+	discordCID := flag.String("discord-cid", lookupEnvOrString("DISCORD_CID", ""), "DISCORD_CID, discord cid, required")
+	discordCommand := flag.String("discord-command", lookupEnvOrString("DISCORD_COMMAND", "mumble-discord"), "DISCORD_COMMAND, Discord command string, env alt DISCORD_COMMAND, optional, (defaults mumble-discord)")
+	discordDisableText := flag.Bool("discord-disable-text", lookupEnvOrBool("DISCORD_DISABLE_TEXT", false), "DISCORD_DISABLE_TEXT, disable sending direct messages to discord, (default false)")
+	mode := flag.String("mode", lookupEnvOrString("MODE", "constant"), "MODE, [constant, manual, auto] determine which mode the bridge starts in, (default constant)")
+	nice := flag.Bool("nice", lookupEnvOrBool("NICE", false), "NICE, whether the bridge should automatically try to 'nice' itself, (default false)")
 
 	cpuprofile := flag.String("cpuprofile", "", "write cpu profile to `file`")
 
@@ -75,6 +79,7 @@ func main() {
 		}
 	}
 
+	// Optional CPU Profiling
 	if *cpuprofile != "" {
 		f, err := os.Create(*cpuprofile)
 		if err != nil {
@@ -87,62 +92,70 @@ func main() {
 		defer pprof.StopCPUProfile()
 	}
 
-	//Connect to discord
-	discord, err := discordgo.New("Bot " + *discordToken)
-	if err != nil {
-		log.Println(err)
-		return
-	}
+	// BRIDGE SETUP
 
-	// Mumble setup
-	config := gumble.NewConfig()
-	config.Username = *mumbleUsername
-	config.Password = *mumblePassword
-	config.AudioInterval = time.Millisecond * 10
-
-	// Bridge setup
-	BridgeConf := &BridgeConfig{
-		Config:         config,
-		MumbleAddr:     *mumbleAddr + ":" + strconv.Itoa(*mumblePort),
-		MumbleInsecure: *mumbleInsecure,
-		MumbleChannel:  *mumbleChannel,
-		Command:        *discordCommand,
-		GID:            *discordGID,
-		CID:            *discordCID,
-	}
 	Bridge := &BridgeState{
-		ActiveConn:       make(chan bool),
-		Connected:        false,
-		MumbleUserCount:  0,
-		DiscordUserCount: 0,
-		DiscordUsers:     make(map[string]bool),
-		MumbleUsers:      make(map[string]bool),
+		BridgeConfig: &BridgeConfig{
+			// MumbleConfig:   config,
+			MumbleAddr:         *mumbleAddr + ":" + strconv.Itoa(*mumblePort),
+			MumbleInsecure:     *mumbleInsecure,
+			MumbleChannel:      *mumbleChannel,
+			MumbleDisableText:  *mumbleDisableText,
+			Command:            *discordCommand,
+			GID:                *discordGID,
+			CID:                *discordCID,
+			DiscordDisableText: *discordDisableText,
+		},
+		Connected:    false,
+		DiscordUsers: make(map[string]discordUser),
+		MumbleUsers:  make(map[string]bool),
 	}
-	ul := &sync.Mutex{}
-	cl := &sync.Mutex{}
-	l := &Listener{BridgeConf, Bridge, ul, cl}
 
-	// Discord setup
-	// Open Websocket
-	discord.LogLevel = 1
-	discord.StateEnabled = true
-	discord.Identify.Intents = discordgo.MakeIntent(discordgo.IntentsAllWithoutPrivileged)
-	discord.ShouldReconnectOnError = true
-	// register handlers
-	discord.AddHandler(l.ready)
-	discord.AddHandler(l.messageCreate)
-	discord.AddHandler(l.guildCreate)
-	discord.AddHandler(l.voiceUpdate)
-	err = discord.Open()
-	l.BridgeConf.Config.Attach(gumbleutil.Listener{
-		Connect:    l.mumbleConnect,
-		UserChange: l.mumbleUserChange,
+	// MUMBLE SETUP
+	MumbleConfig := gumble.NewConfig()
+	Bridge.BridgeConfig.MumbleConfig = MumbleConfig
+	MumbleConfig.Username = *mumbleUsername
+	MumbleConfig.Password = *mumblePassword
+	MumbleConfig.AudioInterval = time.Millisecond * 10
+
+	Bridge.MumbleListener = &MumbleListener{
+		Bridge: Bridge,
+	}
+
+	MumbleConfig.Attach(gumbleutil.Listener{
+		Connect:    Bridge.MumbleListener.mumbleConnect,
+		UserChange: Bridge.MumbleListener.mumbleUserChange,
 	})
+
+	// DISCORD SETUP
+
+	//Connect to discord
+	Bridge.DiscordSession, err = discordgo.New("Bot " + *discordToken)
 	if err != nil {
 		log.Println(err)
 		return
 	}
-	defer discord.Close()
+
+	Bridge.DiscordSession.LogLevel = 1
+	Bridge.DiscordSession.StateEnabled = true
+	Bridge.DiscordSession.Identify.Intents = discordgo.MakeIntent(discordgo.IntentsAllWithoutPrivileged)
+	Bridge.DiscordSession.ShouldReconnectOnError = true
+	// register handlers
+	Bridge.DiscordListener = &DiscordListener{
+		Bridge: Bridge,
+	}
+	Bridge.DiscordSession.AddHandler(Bridge.DiscordListener.ready)
+	Bridge.DiscordSession.AddHandler(Bridge.DiscordListener.messageCreate)
+	Bridge.DiscordSession.AddHandler(Bridge.DiscordListener.guildCreate)
+	Bridge.DiscordSession.AddHandler(Bridge.DiscordListener.voiceUpdate)
+
+	// Open Discord websocket
+	err = Bridge.DiscordSession.Open()
+	if err != nil {
+		log.Println(err)
+		return
+	}
+	defer Bridge.DiscordSession.Close()
 
 	log.Println("Discord Bot Connected")
 	log.Printf("Discord bot looking for command !%v", *discordCommand)
@@ -150,22 +163,23 @@ func main() {
 	switch *mode {
 	case "auto":
 		log.Println("bridge starting in automatic mode")
-		Bridge.AutoChan = make(chan bool)
+		Bridge.AutoChanDie = make(chan bool)
 		Bridge.Mode = bridgeModeAuto
-		go AutoBridge(discord, l)
+		go Bridge.AutoBridge()
 	case "manual":
 		log.Println("bridge starting in manual mode")
 		Bridge.Mode = bridgeModeManual
 	case "constant":
 		log.Println("bridge starting in constant mode")
 		Bridge.Mode = bridgeModeConstant
-		go startBridge(discord, *discordGID, *discordCID, l, make(chan bool))
+		go Bridge.startBridge()
 	default:
-		discord.Close()
+		Bridge.DiscordSession.Close()
 		log.Fatalln("invalid bridge mode set")
 	}
 
-	go discordStatusUpdate(discord, *mumbleAddr, strconv.Itoa(*mumblePort), l)
+	go Bridge.discordStatusUpdate()
+
 	sc := make(chan os.Signal, 1)
 	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt, os.Kill)
 	<-sc

mumble-handlers.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"strings"
+
+	"layeh.com/gumble/gumble"
+)
+
+// MumbleListener Handle mumble events
+type MumbleListener struct {
+	Bridge *BridgeState
+}
+
+func (l *MumbleListener) mumbleConnect(e *gumble.ConnectEvent) {
+	if l.Bridge.BridgeConfig.MumbleChannel != "" {
+		//join specified channel
+		startingChannel := e.Client.Channels.Find(l.Bridge.BridgeConfig.MumbleChannel)
+		if startingChannel != nil {
+			e.Client.Self.Move(startingChannel)
+		}
+	}
+}
+
+func (l *MumbleListener) mumbleUserChange(e *gumble.UserChangeEvent) {
+	l.Bridge.MumbleUsersMutex.Lock()
+	if e.Type.Has(gumble.UserChangeConnected) || e.Type.Has(gumble.UserChangeChannel) || e.Type.Has(gumble.UserChangeDisconnected) {
+		l.Bridge.MumbleUsers = make(map[string]bool)
+		for _, user := range l.Bridge.MumbleClient.Self.Channel.Users {
+			//note, this might be too slow for really really big channels?
+			//event listeners block while processing
+			//also probably bad to rebuild the set every user change.
+			if user.Name != l.Bridge.MumbleClient.Self.Name {
+				l.Bridge.MumbleUsers[user.Name] = true
+			}
+		}
+	}
+	l.Bridge.MumbleUsersMutex.Unlock()
+
+	if e.Type.Has(gumble.UserChangeConnected) {
+
+		if !l.Bridge.BridgeConfig.MumbleDisableText {
+			e.User.Send("Mumble-Discord-Bridge v" + version)
+
+			// Tell the user who is connected to discord
+			if len(l.Bridge.DiscordUsers) == 0 {
+				e.User.Send("No users connected to Discord")
+			} else {
+				s := "Connected to Discord: "
+
+				arr := []string{}
+				l.Bridge.DiscordUsersMutex.Lock()
+				for u := range l.Bridge.DiscordUsers {
+					arr = append(arr, l.Bridge.DiscordUsers[u].username)
+				}
+
+				s = s + strings.Join(arr[:], ",")
+
+				l.Bridge.DiscordUsersMutex.Unlock()
+				e.User.Send(s)
+			}
+		}
+
+		// Send discord a notice
+		l.Bridge.discordSendMessageAll(e.User.Name + " has joined mumble")
+	}
+	if e.Type.Has(gumble.UserChangeDisconnected) {
+		l.Bridge.discordSendMessageAll(e.User.Name + " has left mumble")
+	}
+}

mumble.go

@@ -15,7 +15,7 @@ var mumbleStreamingArr []bool
 
 // MumbleDuplex - listenera and outgoing
 type MumbleDuplex struct {
-	Close chan bool
+	die chan bool
 }
 
 // OnAudioStream - Spawn routines to handle incoming packets
@@ -29,11 +29,11 @@ func (m MumbleDuplex) OnAudioStream(e *gumble.AudioStreamEvent) {
 	mumbleStreamingArr = append(mumbleStreamingArr, false)
 	mutex.Unlock()
 
-	go func(die chan bool) {
+	go func() {
 		log.Println("new mumble audio stream", e.User.Name)
 		for {
 			select {
-			case <-die:
+			case <-m.die:
 				log.Println("Removing mumble audio stream")
 				return
 			case p := <-e.C:
@@ -45,7 +45,7 @@ func (m MumbleDuplex) OnAudioStream(e *gumble.AudioStreamEvent) {
 				}
 			}
 		}
-	}(m.Close)
+	}()
 	return
 }