684 lines
16 KiB
Go
684 lines
16 KiB
Go
package main
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import (
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"bytes"
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"encoding/binary"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"math/rand"
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"os"
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"os/signal"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"text/tabwriter"
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"time"
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"github.com/bwmarrin/discordgo"
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humanize "github.com/dustin/go-humanize"
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log "github.com/sirupsen/logrus"
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)
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var (
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// discordgo session
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discord *discordgo.Session
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// Map of Guild id's to *Play channels, used for queuing and rate-limiting guilds
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queues = make(map[string]chan *Play)
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// bitrate Sound encoding settings
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bitrate = 128
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// maxQueueSize Sound encoding settings
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maxQueueSize = 6
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// OWNER variable
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OWNER string
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// mutex for checking if voice connection already exists
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mutex = &sync.Mutex{}
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)
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// Play represents an individual use of the !airhorn command
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type Play struct {
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GuildID string
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ChannelID string
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UserID string
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Sound *Sound
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// The next play to occur after this, only used for chaining sounds like anotha
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Next *Play
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// If true, this was a forced play using a specific airhorn sound name
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Forced bool
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}
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// SoundCollection of Sounds
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type SoundCollection struct {
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Prefix string
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Commands []string
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Sounds []*Sound
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ChainWith *SoundCollection
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soundRange int
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}
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// Sound represents a sound clip
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type Sound struct {
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Name string
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// Weight adjust how likely it is this song will play, higher = more likely
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Weight int
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// Delay (in milliseconds) for the bot to wait before sending the disconnect request
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PartDelay int
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// Buffer to store encoded PCM packets
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buffer [][]byte
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}
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// COLLECTIONS all collections
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var COLLECTIONS []*SoundCollection
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// Create collections
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func createCollections() {
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files, _ := ioutil.ReadDir("./audio")
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for _, f := range files {
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if strings.Contains(f.Name(), ".dca") {
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soundfile := strings.Split(strings.Replace(f.Name(), ".dca", "", -1), "_")
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containsPrefix := false
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containsSound := false
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if len(COLLECTIONS) == 0 {
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addNewSoundCollection(soundfile[0], soundfile[1])
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}
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for _, c := range COLLECTIONS {
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if c.Prefix == soundfile[0] {
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containsPrefix = true
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for _, sound := range c.Sounds {
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if sound.Name == soundfile[1] {
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containsSound = true
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}
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}
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if !containsSound {
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c.Sounds = append(c.Sounds, createSound(soundfile[1], 1, 250))
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}
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}
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}
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if !containsPrefix {
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addNewSoundCollection(soundfile[0], soundfile[1])
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}
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}
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}
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}
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func addNewSoundCollection(prefix string, soundname string) {
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var SC = &SoundCollection{
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Prefix: prefix,
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Commands: []string{
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"!" + prefix,
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},
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Sounds: []*Sound{
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createSound(soundname, 1, 250),
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},
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}
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COLLECTIONS = append(COLLECTIONS, SC)
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}
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// Create a Sound struct
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func createSound(Name string, Weight int, PartDelay int) *Sound {
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return &Sound{
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Name: Name,
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Weight: Weight,
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PartDelay: PartDelay,
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buffer: make([][]byte, 0),
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}
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}
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// Load soundcollection
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func (sc *SoundCollection) Load() {
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for _, sound := range sc.Sounds {
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sc.soundRange += sound.Weight
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sound.Load(sc)
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}
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}
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// Random select sound
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func (sc *SoundCollection) Random() *Sound {
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var (
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i int
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number = randomRange(0, sc.soundRange)
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)
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for _, sound := range sc.Sounds {
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i += sound.Weight
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if number < i {
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return sound
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}
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}
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return nil
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}
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// Load attempts to load an encoded sound file from disk
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// DCA files are pre-computed sound files that are easy to send to Discord.
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// If you would like to create your own DCA files, please use:
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// https://github.com/nstafie/dca-rs
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// eg: dca-rs --raw -i <input wav file> > <output file>
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func (s *Sound) Load(c *SoundCollection) error {
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path := fmt.Sprintf("audio/%v_%v.dca", c.Prefix, s.Name)
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file, err := os.Open(path)
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if err != nil {
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fmt.Println("error opening dca file :", err)
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return err
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}
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var opuslen int16
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for {
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// read opus frame length from dca file
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err = binary.Read(file, binary.LittleEndian, &opuslen)
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// If this is the end of the file, just return
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if err == io.EOF || err == io.ErrUnexpectedEOF {
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return nil
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}
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if err != nil {
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fmt.Println("error reading from dca file :", err)
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return err
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}
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// read encoded pcm from dca file
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InBuf := make([]byte, opuslen)
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err = binary.Read(file, binary.LittleEndian, &InBuf)
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// Should not be any end of file errors
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if err != nil {
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fmt.Println("error reading from dca file :", err)
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return err
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}
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// append encoded pcm data to the buffer
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s.buffer = append(s.buffer, InBuf)
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}
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}
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// Play plays this sound over the specified VoiceConnection
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func (s *Sound) Play(vc *discordgo.VoiceConnection) {
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vc.Speaking(true)
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defer vc.Speaking(false)
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for _, buff := range s.buffer {
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vc.OpusSend <- buff
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}
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}
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// Attempts to find the current users voice channel inside a given guild
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func getCurrentVoiceChannel(user *discordgo.User, guild *discordgo.Guild) *discordgo.Channel {
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for _, vs := range guild.VoiceStates {
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if vs.UserID == user.ID {
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channel, _ := discord.State.Channel(vs.ChannelID)
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return channel
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}
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}
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return nil
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}
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// Returns a random integer between min and max
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func randomRange(min, max int) int {
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rand.Seed(time.Now().UTC().UnixNano())
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return rand.Intn(max-min) + min
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}
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// Prepares a play
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func createPlay(user *discordgo.User, guild *discordgo.Guild, coll *SoundCollection, sound *Sound) *Play {
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// Grab the users voice channel
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channel := getCurrentVoiceChannel(user, guild)
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if channel == nil {
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log.WithFields(log.Fields{
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"user": user.ID,
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"guild": guild.ID,
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}).Warning("Failed to find channel to play sound in")
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return nil
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}
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// Create the play
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play := &Play{
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GuildID: guild.ID,
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ChannelID: channel.ID,
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UserID: user.ID,
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Sound: sound,
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Forced: true,
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}
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// If we didn't get passed a manual sound, generate a random one
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if play.Sound == nil {
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play.Sound = coll.Random()
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play.Forced = false
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}
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// If the collection is a chained one, set the next sound
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if coll.ChainWith != nil {
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play.Next = &Play{
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GuildID: play.GuildID,
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ChannelID: play.ChannelID,
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UserID: play.UserID,
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Sound: coll.ChainWith.Random(),
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Forced: play.Forced,
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}
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}
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return play
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}
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// Prepares and enqueues a play into the ratelimit/buffer guild queue
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func enqueuePlay(user *discordgo.User, guild *discordgo.Guild, coll *SoundCollection, sound *Sound) {
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play := createPlay(user, guild, coll, sound)
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if play == nil {
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return
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}
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if sound != nil {
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log.WithFields(log.Fields{
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"user": user,
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}).Info(user.Username + " triggered sound playback of !" + coll.Prefix + " " + sound.Name + " for server " + guild.Name + " in channel " + play.ChannelID)
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} else {
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log.WithFields(log.Fields{
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"user": user,
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}).Info(user.Username + " triggered sound playback of !" + coll.Prefix + " for server " + guild.Name + " in channel " + play.ChannelID)
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}
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// Check if we already have a connection to this guild
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// this should be threadsafe
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mutex.Lock()
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_, exists := queues[guild.ID]
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mutex.Unlock()
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if exists {
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if len(queues[guild.ID]) < maxQueueSize {
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mutex.Lock()
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queues[guild.ID] <- play
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mutex.Unlock()
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}
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} else {
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mutex.Lock()
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queues[guild.ID] = make(chan *Play, maxQueueSize)
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mutex.Unlock()
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playSound(play, nil)
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}
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}
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// Play a sound
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func playSound(play *Play, vc *discordgo.VoiceConnection) (err error) {
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log.WithFields(log.Fields{
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"play": play,
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}).Info("Playing sound")
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if vc != nil {
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if vc.GuildID != play.GuildID {
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vc.Disconnect()
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vc = nil
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}
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}
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if vc == nil {
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vc, err = discord.ChannelVoiceJoin(play.GuildID, play.ChannelID, false, true)
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if err != nil {
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log.WithFields(log.Fields{
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"error": err,
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}).Error("Failed to play sound")
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mutex.Lock()
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delete(queues, play.GuildID)
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mutex.Unlock()
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return err
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}
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}
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// If we need to change channels, do that now
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if vc.ChannelID != play.ChannelID {
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vc.ChangeChannel(play.ChannelID, false, true)
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time.Sleep(time.Millisecond * 125)
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}
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// Sleep for a specified amount of time before playing the sound
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time.Sleep(time.Millisecond * 32)
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// Play the sound
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play.Sound.Play(vc)
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// If this is chained, play the chained sound
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if play.Next != nil {
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playSound(play.Next, vc)
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}
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// If there is another song in the queue, recurse and play that
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if len(queues[play.GuildID]) > 0 {
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play = <-queues[play.GuildID]
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playSound(play, vc)
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return nil
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}
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// If the queue is empty, delete it
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time.Sleep(time.Millisecond * time.Duration(play.Sound.PartDelay))
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mutex.Lock()
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delete(queues, play.GuildID)
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vc.Disconnect()
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mutex.Unlock()
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return nil
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}
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func clearQueue(user *discordgo.User) {
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log.WithFields(log.Fields{
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"user": user,
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}).Info(user.Username + " triggered queue clearing")
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for key, _ := range queues {
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delete(queues, key)
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}
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discord.Close()
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discord.Open()
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}
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func onReady(s *discordgo.Session, event *discordgo.Ready) {
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log.Info("Received READY payload.")
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}
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func scontains(key string, options ...string) bool {
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for _, item := range options {
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if item == key {
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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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func displayBotStats(cid string) {
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stats := runtime.MemStats{}
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runtime.ReadMemStats(&stats)
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users := 0
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for _, guild := range discord.State.Ready.Guilds {
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users += len(guild.Members)
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}
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w := &tabwriter.Writer{}
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buf := &bytes.Buffer{}
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w.Init(buf, 0, 4, 0, ' ', 0)
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fmt.Fprintf(w, "```\n")
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fmt.Fprintf(w, "Discordgo: \t%s\n", discordgo.VERSION)
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fmt.Fprintf(w, "Go: \t%s\n", runtime.Version())
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fmt.Fprintf(w, "Memory: \t%s / %s (%s total allocated)\n", humanize.Bytes(stats.Alloc), humanize.Bytes(stats.Sys), humanize.Bytes(stats.TotalAlloc))
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fmt.Fprintf(w, "Tasks: \t%d\n", runtime.NumGoroutine())
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fmt.Fprintf(w, "Servers: \t%d\n", len(discord.State.Ready.Guilds))
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fmt.Fprintf(w, "Users: \t%d\n", users)
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fmt.Fprintf(w, "```\n")
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w.Flush()
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discord.ChannelMessageSend(cid, buf.String())
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}
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func utilGetMentioned(s *discordgo.Session, m *discordgo.MessageCreate) *discordgo.User {
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for _, mention := range m.Mentions {
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if mention.ID != s.State.Ready.User.ID {
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return mention
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}
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}
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return nil
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}
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// Handles bot operator messages, should be refactored (lmao)
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func handleBotControlMessages(s *discordgo.Session, m *discordgo.MessageCreate, parts []string, g *discordgo.Guild) {
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if len(parts) > 1 {
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if scontains(parts[1], "status") {
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displayBotStats(m.ChannelID)
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}
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}
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}
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func setIdleStatus() {
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games := []string{
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"Terranigma",
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"Secret of Mana",
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"Quake III Arena",
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"Duke Nukem 3D",
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"Monkey Island 2: LeChuck's Revenge",
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"Turtles in Time",
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"Unreal Tournament",
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"Half-Life",
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"Half-Life 2",
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"Warcraft II",
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"Starcraft",
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"Diablo",
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"Diablo II",
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"A Link to the Past",
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"Ocarina of Time",
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"Star Fox",
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"Tetris",
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"Pokémon Red",
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"Pokémon Blue",
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"Die Siedler II",
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"Day of the Tentacle",
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"Maniac Mansion",
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"Prince of Persia",
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"Super Mario Kart",
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"Pac-Man",
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"Frogger",
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"Donkey Kong",
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"Donkey Kong Country",
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"Asteroids",
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"Doom",
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"Breakout",
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"Street Fighter II",
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"Wolfenstein 3D",
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"Mega Man",
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"Myst",
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"R-Type",
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}
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for {
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discord.UpdateStreamingStatus(1, "", "")
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discord.UpdateGameStatus(0, games[randomRange(0, len(games))])
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time.Sleep(time.Duration(randomRange(5, 15)) * time.Minute)
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}
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}
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func onMessageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
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if m.Content == "ping" || m.Content == "pong" {
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// If the message is "ping" reply with "Pong!"
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if m.Content == "ping" {
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s.ChannelMessageSend(m.ChannelID, "Pong!")
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}
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// If the message is "pong" reply with "Ping!"
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if m.Content == "pong" {
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s.ChannelMessageSend(m.ChannelID, "Ping!")
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}
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// Updating bot status
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s.UpdateGameStatus(0, "Ping Pong with "+m.Author.Username)
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}
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if len(m.Content) <= 0 || (m.Content[0] != '!' && len(m.Mentions) < 1) {
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return
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}
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if m.Content == "!list" {
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var list string
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for _, c := range COLLECTIONS {
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list += "**!" + c.Prefix + "**\n"
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for _, sounds := range c.Sounds {
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list += sounds.Name + "\n"
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}
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list += "\n"
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}
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st, _ := s.UserChannelCreate(m.Author.ID)
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s.ChannelMessageSend(st.ID, list)
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go deleteCommandMessage(s, m.ChannelID, m.ID)
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}
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msg := strings.Replace(m.ContentWithMentionsReplaced(), s.State.Ready.User.Username, "username", 1)
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parts := strings.Split(strings.ToLower(msg), " ")
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channel, _ := discord.State.Channel(m.ChannelID)
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if channel == nil {
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log.WithFields(log.Fields{
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"channel": m.ChannelID,
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"message": m.ID,
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}).Warning("Failed to grab channel")
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return
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}
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guild, _ := discord.State.Guild(channel.GuildID)
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if guild == nil {
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log.WithFields(log.Fields{
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"guild": channel.GuildID,
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"channel": channel,
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"message": m.ID,
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}).Warning("Failed to grab guild")
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return
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}
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// If this is a mention, it should come from the owner (otherwise we don't care)
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if len(m.Mentions) > 0 && m.Author.ID == OWNER && len(parts) > 0 {
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mentioned := false
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for _, mention := range m.Mentions {
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mentioned = (mention.ID == s.State.Ready.User.ID)
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if mentioned {
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break
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}
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}
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if mentioned {
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handleBotControlMessages(s, m, parts, guild)
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}
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return
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}
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// Find the collection for the command we got
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findAndPlaySound(s, m, parts, guild)
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}
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func findSoundAndCollection(command string, soundname string) (*Sound, *SoundCollection) {
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for _, c := range COLLECTIONS {
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if scontains(command, c.Commands...) {
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for _, s := range c.Sounds {
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if soundname == s.Name {
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return s, c
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}
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}
|
|
return nil, c
|
|
}
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
// Find sound in collection and play it or do nothing if not found
|
|
func findAndPlaySound(s *discordgo.Session, m *discordgo.MessageCreate, parts []string, g *discordgo.Guild) {
|
|
for _, coll := range COLLECTIONS {
|
|
if scontains(parts[0], coll.Commands...) {
|
|
go deleteCommandMessage(s, m.ChannelID, m.ID)
|
|
|
|
// If they passed a specific sound effect, find and select that (otherwise play nothing)
|
|
var sound *Sound
|
|
if len(parts) > 1 {
|
|
for _, s := range coll.Sounds {
|
|
if parts[1] == s.Name {
|
|
sound = s
|
|
}
|
|
}
|
|
|
|
if sound == nil {
|
|
return
|
|
}
|
|
}
|
|
|
|
go enqueuePlay(m.Author, g, coll, sound)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// Delete the message after a delay so the channel does not get cluttered
|
|
func deleteCommandMessage(s *discordgo.Session, channelID string, messageID string) {
|
|
time.Sleep(30 * time.Second)
|
|
err := s.ChannelMessageDelete(channelID, messageID)
|
|
if err != nil {
|
|
log.WithFields(log.Fields{
|
|
"error": err,
|
|
}).Error("Failed to delete message.")
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
var (
|
|
Token = flag.String("t", "", "Discord Authentication Token")
|
|
Shard = flag.String("s", "", "Shard ID")
|
|
ShardCount = flag.String("c", "", "Number of shards")
|
|
Owner = flag.String("o", "", "Owner ID")
|
|
Port = flag.Int("p", 0, "Web server port")
|
|
RedirectURL = flag.String("r", "", "Address where the web server will be available without slash at the end. For example: \"http://bot.example.org:12345\"")
|
|
Ci = flag.Int("ci", 0, "ClientID")
|
|
Cs = flag.String("cs", "", "ClientSecret")
|
|
err error
|
|
)
|
|
flag.Parse()
|
|
|
|
// create SoundCollections by scanning the audio folder
|
|
createCollections()
|
|
|
|
// Start Webserver if a valid port is provided and if ClientID and ClientSecret are set
|
|
if *Port != 0 && *Port >= 1 && *Ci != 0 && *Cs != "" && *RedirectURL != "" {
|
|
log.Infoln("Starting web server on port " + strconv.Itoa(*Port))
|
|
go startWebServer(strconv.Itoa(*Port), strconv.Itoa(*Ci), *Cs, *RedirectURL)
|
|
} else {
|
|
log.Infoln("Required web server arguments missing or invalid. Skipping web server start.")
|
|
}
|
|
|
|
if *Owner != "" {
|
|
OWNER = *Owner
|
|
}
|
|
|
|
// Preload all the sounds
|
|
log.Info("Preloading sounds...")
|
|
for _, coll := range COLLECTIONS {
|
|
coll.Load()
|
|
}
|
|
|
|
// Create a discord session
|
|
log.Info("Starting discord session...")
|
|
discord, err = discordgo.New("Bot " + *Token)
|
|
if err != nil {
|
|
log.WithFields(log.Fields{
|
|
"error": err,
|
|
}).Fatal("Failed to create discord session")
|
|
return
|
|
}
|
|
|
|
// Set sharding info
|
|
discord.ShardID, _ = strconv.Atoi(*Shard)
|
|
discord.ShardCount, _ = strconv.Atoi(*ShardCount)
|
|
|
|
if discord.ShardCount <= 0 {
|
|
discord.ShardCount = 1
|
|
}
|
|
|
|
discord.AddHandler(onReady)
|
|
discord.AddHandler(onMessageCreate)
|
|
|
|
err = discord.Open()
|
|
if err != nil {
|
|
log.WithFields(log.Fields{
|
|
"error": err,
|
|
}).Fatal("Failed to create discord websocket connection")
|
|
return
|
|
}
|
|
|
|
go setIdleStatus()
|
|
// We're running!
|
|
log.Info("Gidbig is ready. Quit with CTRL-C.")
|
|
|
|
// Wait for a signal to quit
|
|
c := make(chan os.Signal, 1)
|
|
signal.Notify(c, os.Interrupt, os.Kill)
|
|
<-c
|
|
}
|