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package bdiscord
import (
"github.com/42wim/matterbridge/bridge/config"
log "github.com/Sirupsen/logrus"
"github.com/bwmarrin/discordgo"
"regexp"
"strings"
"sync"
)
type bdiscord struct {
c *discordgo.Session
Config *config.Protocol
Remote chan config.Message
Account string
Channels []*discordgo.Channel
Nick string
UseChannelID bool
userMemberMap map[string]*discordgo.Member
guildID string
sync.RWMutex
}
var flog *log.Entry
var protocol = "discord"
func init() {
flog = log.WithFields(log.Fields{"module": protocol})
}
func New(cfg config.Protocol, account string, c chan config.Message) *bdiscord {
b := &bdiscord{}
b.Config = &cfg
b.Remote = c
b.Account = account
b.userMemberMap = make(map[string]*discordgo.Member)
return b
}
func (b *bdiscord) Connect() error {
var err error
flog.Info("Connecting")
if !strings.HasPrefix(b.Config.Token, "Bot ") {
b.Config.Token = "Bot " + b.Config.Token
}
b.c, err = discordgo.New(b.Config.Token)
if err != nil {
flog.Debugf("%#v", err)
return err
}
flog.Info("Connection succeeded")
b.c.AddHandler(b.messageCreate)
b.c.AddHandler(b.memberUpdate)
b.c.AddHandler(b.messageUpdate)
err = b.c.Open()
if err != nil {
flog.Debugf("%#v", err)
return err
}
guilds, err := b.c.UserGuilds()
if err != nil {
flog.Debugf("%#v", err)
return err
}
userinfo, err := b.c.User("@me")
if err != nil {
flog.Debugf("%#v", err)
return err
}
b.Nick = userinfo.Username
for _, guild := range guilds {
if guild.Name == b.Config.Server {
b.Channels, err = b.c.GuildChannels(guild.ID)
b.guildID = guild.ID
if err != nil {
flog.Debugf("%#v", err)
return err
}
}
}
return nil
}
func (b *bdiscord) Disconnect() error {
return nil
}
func (b *bdiscord) JoinChannel(channel string) error {
idcheck := strings.Split(channel, "ID:")
if len(idcheck) > 1 {
b.UseChannelID = true
}
return nil
}
func (b *bdiscord) Send(msg config.Message) error {
flog.Debugf("Receiving %#v", msg)
channelID := b.getChannelID(msg.Channel)
if channelID == "" {
flog.Errorf("Could not find channelID for %v", msg.Channel)
return nil
}
b.c.ChannelMessageSend(channelID, msg.Username+msg.Text)
return nil
}
func (b *bdiscord) messageUpdate(s *discordgo.Session, m *discordgo.MessageUpdate) {
if b.Config.EditDisable {
return
}
// only when message is actually edited
if m.Message.EditedTimestamp != "" {
flog.Debugf("Sending edit message")
m.Content = m.Content + b.Config.EditSuffix
b.messageCreate(s, (*discordgo.MessageCreate)(m))
}
}
func (b *bdiscord) messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
// not relay our own messages
if m.Author.Username == b.Nick {
return
}
if len(m.Attachments) > 0 {
for _, attach := range m.Attachments {
m.Content = m.Content + "\n" + attach.URL
}
}
if m.Content == "" {
return
}
flog.Debugf("Sending message from %s on %s to gateway", m.Author.Username, b.Account)
channelName := b.getChannelName(m.ChannelID)
if b.UseChannelID {
channelName = "ID:" + m.ChannelID
}
username := b.getNick(m.Author)
if len(m.MentionRoles) > 0 {
m.Message.Content = b.replaceRoleMentions(m.Message.Content)
}
m.Message.Content = b.stripCustomoji(m.Message.Content)
m.Message.Content = b.replaceChannelMentions(m.Message.Content)
b.Remote <- config.Message{Username: username, Text: m.ContentWithMentionsReplaced(), Channel: channelName,
Account: b.Account, Avatar: "https://cdn.discordapp.com/avatars/" + m.Author.ID + "/" + m.Author.Avatar + ".jpg",
UserID: m.Author.ID}
}
func (b *bdiscord) memberUpdate(s *discordgo.Session, m *discordgo.GuildMemberUpdate) {
b.Lock()
if _, ok := b.userMemberMap[m.Member.User.ID]; ok {
flog.Debugf("%s: memberupdate: user %s (nick %s) changes nick to %s", b.Account, m.Member.User.Username, b.userMemberMap[m.Member.User.ID].Nick, m.Member.Nick)
}
b.userMemberMap[m.Member.User.ID] = m.Member
b.Unlock()
}
func (b *bdiscord) getNick(user *discordgo.User) string {
var err error
b.Lock()
defer b.Unlock()
if _, ok := b.userMemberMap[user.ID]; ok {
if b.userMemberMap[user.ID] != nil {
if b.userMemberMap[user.ID].Nick != "" {
// only return if nick is set
return b.userMemberMap[user.ID].Nick
}
// otherwise return username
return user.Username
}
}
// if we didn't find nick, search for it
member, err := b.c.GuildMember(b.guildID, user.ID)
if err != nil {
return user.Username
}
b.userMemberMap[user.ID] = member
// only return if nick is set
if b.userMemberMap[user.ID].Nick != "" {
return b.userMemberMap[user.ID].Nick
}
return user.Username
}
func (b *bdiscord) getChannelID(name string) string {
idcheck := strings.Split(name, "ID:")
if len(idcheck) > 1 {
return idcheck[1]
}
for _, channel := range b.Channels {
if channel.Name == name {
return channel.ID
}
}
return ""
}
func (b *bdiscord) getChannelName(id string) string {
for _, channel := range b.Channels {
if channel.ID == id {
return channel.Name
}
}
return ""
}
func (b *bdiscord) replaceRoleMentions(text string) string {
roles, err := b.c.GuildRoles(b.guildID)
if err != nil {
flog.Debugf("%#v", string(err.(*discordgo.RESTError).ResponseBody))
return text
}
for _, role := range roles {
text = strings.Replace(text, "<@&"+role.ID+">", "@"+role.Name, -1)
}
return text
}
func (b *bdiscord) replaceChannelMentions(text string) string {
var err error
re := regexp.MustCompile("<#[0-9]+>")
text = re.ReplaceAllStringFunc(text, func(m string) string {
channel := b.getChannelName(m[2 : len(m)-1])
// if at first don't succeed, try again
if channel == "" {
b.Channels, err = b.c.GuildChannels(b.guildID)
if err != nil {
return "#unknownchannel"
}
channel = b.getChannelName(m[2 : len(m)-1])
return "#" + channel
}
return "#" + channel
})
return text
}
func (b *bdiscord) stripCustomoji(text string) string {
// <:doge:302803592035958784>
re := regexp.MustCompile("<(:.*?:)[0-9]+>")
return re.ReplaceAllString(text, `$1`)
}
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