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package btelegram
import (
"strconv"
"github.com/42wim/matterbridge/bridge/config"
log "github.com/Sirupsen/logrus"
"github.com/go-telegram-bot-api/telegram-bot-api"
)
type Btelegram struct {
c *tgbotapi.BotAPI
Config *config.Protocol
Remote chan config.Message
Account string
}
var flog *log.Entry
var protocol = "telegram"
func init() {
flog = log.WithFields(log.Fields{"module": protocol})
}
func New(cfg config.Protocol, account string, c chan config.Message) *Btelegram {
b := &Btelegram{}
b.Config = &cfg
b.Remote = c
b.Account = account
return b
}
func (b *Btelegram) Connect() error {
var err error
flog.Info("Connecting")
b.c, err = tgbotapi.NewBotAPI(b.Config.Token)
if err != nil {
flog.Debugf("%#v", err)
return err
}
updates, err := b.c.GetUpdatesChan(tgbotapi.NewUpdate(0))
if err != nil {
flog.Debugf("%#v", err)
return err
}
flog.Info("Connection succeeded")
go b.handleRecv(updates)
return nil
}
func (b *Btelegram) Disconnect() error {
return nil
}
func (b *Btelegram) JoinChannel(channel config.ChannelInfo) error {
return nil
}
func (b *Btelegram) Send(msg config.Message) (string, error) {
flog.Debugf("Receiving %#v", msg)
chatid, err := strconv.ParseInt(msg.Channel, 10, 64)
if err != nil {
return "", err
}
if b.Config.MessageFormat == "HTML" {
msg.Text = makeHTML(msg.Text)
}
if msg.Event == config.EVENT_MSG_DELETE {
if msg.ID == "" {
return "", nil
}
msgid, err := strconv.Atoi(msg.ID)
if err != nil {
return "", err
}
_, err = b.c.DeleteMessage(tgbotapi.DeleteMessageConfig{ChatID: chatid, MessageID: msgid})
return "", err
}
// edit the message if we have a msg ID
if msg.ID != "" {
msgid, err := strconv.Atoi(msg.ID)
if err != nil {
return "", err
}
m := tgbotapi.NewEditMessageText(chatid, msgid, msg.Username+msg.Text)
_, err = b.c.Send(m)
if err != nil {
return "", err
}
return "", nil
}
m := tgbotapi.NewMessage(chatid, msg.Username+msg.Text)
if b.Config.MessageFormat == "HTML" {
m.ParseMode = tgbotapi.ModeHTML
}
res, err := b.c.Send(m)
if err != nil {
return "", err
}
return strconv.Itoa(res.MessageID), nil
}
func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
for update := range updates {
flog.Debugf("Receiving from telegram: %#v", update.Message)
var message *tgbotapi.Message
username := ""
channel := ""
text := ""
// handle channels
if update.ChannelPost != nil {
message = update.ChannelPost
}
if update.EditedChannelPost != nil && !b.Config.EditDisable {
message = update.EditedChannelPost
message.Text = message.Text + b.Config.EditSuffix
}
// handle groups
if update.Message != nil {
message = update.Message
}
if update.EditedMessage != nil && !b.Config.EditDisable {
message = update.EditedMessage
message.Text = message.Text + b.Config.EditSuffix
}
if message.From != nil {
if b.Config.UseFirstName {
username = message.From.FirstName
}
if username == "" {
username = message.From.UserName
if username == "" {
username = message.From.FirstName
}
}
text = message.Text
channel = strconv.FormatInt(message.Chat.ID, 10)
}
if username == "" {
username = "unknown"
}
if message.Sticker != nil && b.Config.UseInsecureURL {
text = text + " " + b.getFileDirectURL(message.Sticker.FileID)
}
if message.Video != nil && b.Config.UseInsecureURL {
text = text + " " + b.getFileDirectURL(message.Video.FileID)
}
if message.Photo != nil && b.Config.UseInsecureURL {
photos := *message.Photo
// last photo is the biggest
text = text + " " + b.getFileDirectURL(photos[len(photos)-1].FileID)
}
if message.Document != nil && b.Config.UseInsecureURL {
text = text + " " + message.Document.FileName + " : " + b.getFileDirectURL(message.Document.FileID)
}
// quote the previous message
if message.ReplyToMessage != nil {
usernameReply := ""
if message.ReplyToMessage.From != nil {
if b.Config.UseFirstName {
usernameReply = message.ReplyToMessage.From.FirstName
}
if usernameReply == "" {
usernameReply = message.ReplyToMessage.From.UserName
if usernameReply == "" {
usernameReply = message.ReplyToMessage.From.FirstName
}
}
}
if usernameReply == "" {
usernameReply = "unknown"
}
text = text + " (re @" + usernameReply + ":" + message.ReplyToMessage.Text + ")"
}
if text != "" {
flog.Debugf("Sending message from %s on %s to gateway", username, b.Account)
msg := config.Message{Username: username, Text: text, Channel: channel, Account: b.Account, UserID: strconv.Itoa(message.From.ID), ID: strconv.Itoa(message.MessageID)}
flog.Debugf("Message is %#v", msg)
b.Remote <- msg
}
}
}
func (b *Btelegram) getFileDirectURL(id string) string {
res, err := b.c.GetFileDirectURL(id)
if err != nil {
return ""
}
return res
}
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