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mumbledj/main.go

157 lines
4.8 KiB
Go

/*
* MumbleDJ
* By Matthieu Grieger
* main.go
* Copyright (c) 2014, 2015 Matthieu Grieger (MIT License)
*/
package main
import (
"flag"
"fmt"
"github.com/layeh/gopus"
"github.com/layeh/gumble/gumble"
"github.com/layeh/gumble/gumble_ffmpeg"
"github.com/layeh/gumble/gumbleutil"
"os/user"
)
// MumbleDJ type declaration
type mumbledj struct {
config gumble.Config
client *gumble.Client
keepAlive chan bool
defaultChannel string
conf DjConfig
queue *SongQueue
audioStream *gumble_ffmpeg.Stream
homeDir string
}
// OnConnect event. First moves MumbleDJ into the default channel specified
// via commandline args, and moves to root channel if the channel does not exist. The current
// user's homedir path is stored, configuration is loaded, and the audio stream is set up.
func (dj *mumbledj) OnConnect(e *gumble.ConnectEvent) {
if dj.client.Channels().Find(dj.defaultChannel) != nil {
dj.client.Self().Move(dj.client.Channels().Find(dj.defaultChannel))
} else {
fmt.Println("Channel doesn't exist or one was not provided, staying in root channel...")
}
if currentUser, err := user.Current(); err == nil {
dj.homeDir = currentUser.HomeDir
}
if err := loadConfiguration(); err == nil {
fmt.Println("Configuration successfully loaded!")
} else {
panic(err)
}
if audioStream, err := gumble_ffmpeg.New(dj.client); err == nil {
dj.audioStream = audioStream
dj.audioStream.Done = dj.queue.OnItemFinished
dj.audioStream.SetVolume(dj.conf.Volume.DefaultVolume)
} else {
panic(err)
}
dj.client.AudioEncoder().SetApplication(gopus.Audio)
}
// OnDisconnect event. Terminates MumbleDJ thread.
func (dj *mumbledj) OnDisconnect(e *gumble.DisconnectEvent) {
dj.keepAlive <- true
}
// OnTextMessage event. Checks for command prefix, and calls parseCommand if it exists. Ignores
// the incoming message otherwise.
func (dj *mumbledj) OnTextMessage(e *gumble.TextMessageEvent) {
if e.Message[0] == dj.conf.General.CommandPrefix[0] && e.Message != dj.conf.General.CommandPrefix {
parseCommand(e.Sender, e.Sender.Name(), e.Message[1:])
}
}
// OnUserChange event. Checks UserChange type, and adjusts items such as skiplists to reflect
// the current status of the users on the server.
func (dj *mumbledj) OnUserChange(e *gumble.UserChangeEvent) {
if e.Type.Has(gumble.UserChangeDisconnected) {
if dj.audioStream.IsPlaying() {
if dj.queue.CurrentItem().ItemType() == "playlist" {
dj.queue.CurrentItem().(*Playlist).RemoveSkip(e.User.Name())
dj.queue.CurrentItem().(*Playlist).songs.CurrentItem().(*Song).RemoveSkip(e.User.Name())
} else {
dj.queue.CurrentItem().(*Song).RemoveSkip(e.User.Name())
}
}
}
}
// Checks if username has the permissions to execute a command. Permissions are specified in
// mumbledj.gcfg.
func (dj *mumbledj) HasPermission(username string, command bool) bool {
if dj.conf.Permissions.AdminsEnabled && command {
for _, adminName := range dj.conf.Permissions.Admins {
if username == adminName {
return true
}
}
return false
} else {
return true
}
}
// Sends a private message to a user. Essentially just checks if a user is still in the server
// before sending them the message.
func (dj *mumbledj) SendPrivateMessage(user *gumble.User, message string) {
if targetUser := dj.client.Self().Channel().Users().Find(user.Name()); targetUser != nil {
targetUser.Send(message)
}
}
// dj variable declaration. This is done outside of main() to allow global use.
var dj = mumbledj{
keepAlive: make(chan bool),
queue: NewSongQueue(),
}
// Main function, but only really performs startup tasks. Grabs and parses commandline
// args, sets up the gumble client and its listeners, and then connects to the server.
func main() {
var address, port, username, password, channel string
flag.StringVar(&address, "server", "localhost", "address for Mumble server")
flag.StringVar(&port, "port", "64738", "port for Mumble server")
flag.StringVar(&username, "username", "MumbleDJ", "username of MumbleDJ on server")
flag.StringVar(&password, "password", "", "password for Mumble server (if needed)")
flag.StringVar(&channel, "channel", "root", "default channel for MumbleDJ")
flag.Parse()
dj.client = gumble.NewClient(&dj.config)
dj.config = gumble.Config{
Username: username,
Password: password,
Address: address + ":" + port,
}
dj.defaultChannel = channel
dj.client.Attach(gumbleutil.Listener{
Connect: dj.OnConnect,
Disconnect: dj.OnDisconnect,
TextMessage: dj.OnTextMessage,
UserChange: dj.OnUserChange,
})
dj.client.Attach(gumbleutil.AutoBitrate)
// IMPORTANT NOTE: This will be changed later once released. Not really safe at the
// moment.
dj.config.TLSConfig.InsecureSkipVerify = true
if err := dj.client.Connect(); err != nil {
panic(err)
}
<-dj.keepAlive
}