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package bzulip
import (
"encoding/json"
"fmt"
"io/ioutil"
"strconv"
"strings"
"sync"
"time"
"github.com/42wim/matterbridge/bridge"
"github.com/42wim/matterbridge/bridge/config"
"github.com/42wim/matterbridge/bridge/helper"
"github.com/42wim/matterbridge/version"
gzb "github.com/matterbridge/gozulipbot"
)
type Bzulip struct {
q *gzb.Queue
bot *gzb.Bot
streams map[int]string
*bridge.Config
sync.RWMutex
}
func New(cfg *bridge.Config) bridge.Bridger {
return &Bzulip{Config: cfg, streams: make(map[int]string)}
}
func (b *Bzulip) Connect() error {
bot := gzb.Bot{APIKey: b.GetString("token"), APIURL: b.GetString("server") + "/api/v1/", Email: b.GetString("login"), UserAgent: fmt.Sprintf("matterbridge/%s", version.Release)}
bot.Init()
q, err := bot.RegisterAll()
b.q = q
b.bot = &bot
if err != nil {
b.Log.Errorf("Connect() %#v", err)
return err
}
// init stream
b.getChannel(0)
b.Log.Info("Connection succeeded")
go b.handleQueue()
return nil
}
func (b *Bzulip) Disconnect() error {
return nil
}
func (b *Bzulip) JoinChannel(channel config.ChannelInfo) error {
return nil
}
func (b *Bzulip) Send(msg config.Message) (string, error) {
b.Log.Debugf("=> Receiving %#v", msg)
// Delete message
if msg.Event == config.EventMsgDelete {
if msg.ID == "" {
return "", nil
}
_, err := b.bot.UpdateMessage(msg.ID, "")
return "", err
}
// Upload a file if it exists
if msg.Extra != nil {
for _, rmsg := range helper.HandleExtra(&msg, b.General) {
b.sendMessage(rmsg)
}
if len(msg.Extra["file"]) > 0 {
return b.handleUploadFile(&msg)
}
}
// edit the message if we have a msg ID
if msg.ID != "" {
_, err := b.bot.UpdateMessage(msg.ID, msg.Username+msg.Text)
return "", err
}
// Post normal message
return b.sendMessage(msg)
}
func (b *Bzulip) getChannel(id int) string {
if name, ok := b.streams[id]; ok {
return name
}
streams, err := b.bot.GetRawStreams()
if err != nil {
b.Log.Errorf("getChannel: %#v", err)
return ""
}
for _, stream := range streams.Streams {
b.streams[stream.StreamID] = stream.Name
}
if name, ok := b.streams[id]; ok {
return name
}
return ""
}
func (b *Bzulip) handleQueue() error {
for {
messages, err := b.q.GetEvents()
if err != nil {
switch err {
case gzb.BackoffError:
time.Sleep(time.Second * 5)
case gzb.NoJSONError:
b.Log.Error("Response wasn't JSON, server down or restarting? sleeping 10 seconds")
time.Sleep(time.Second * 10)
case gzb.BadEventQueueError:
b.Log.Info("got a bad event queue id error, reconnecting")
b.bot.Queues = nil
for {
b.q, err = b.bot.RegisterAll()
if err != nil {
b.Log.Errorf("reconnecting failed: %s. Sleeping 10 seconds", err)
time.Sleep(time.Second * 10)
}
break
}
case gzb.HeartbeatError:
b.Log.Debug("heartbeat received.")
default:
b.Log.Debugf("receiving error: %#v", err)
time.Sleep(time.Second * 10)
}
continue
}
for _, m := range messages {
b.Log.Debugf("== Receiving %#v", m)
// ignore our own messages
if m.SenderEmail == b.GetString("login") {
continue
}
avatarURL := m.AvatarURL
if !strings.HasPrefix(avatarURL, "http") {
avatarURL = b.GetString("server") + avatarURL
}
rmsg := config.Message{
Username: m.SenderFullName,
Text: m.Content,
Channel: b.getChannel(m.StreamID) + "/topic:" + m.Subject,
Account: b.Account,
UserID: strconv.Itoa(m.SenderID),
Avatar: avatarURL,
}
b.Log.Debugf("<= Sending message from %s on %s to gateway", rmsg.Username, b.Account)
b.Log.Debugf("<= Message is %#v", rmsg)
b.Remote <- rmsg
}
time.Sleep(time.Second * 3)
}
}
func (b *Bzulip) sendMessage(msg config.Message) (string, error) {
topic := ""
if strings.Contains(msg.Channel, "/topic:") {
res := strings.Split(msg.Channel, "/topic:")
topic = res[1]
msg.Channel = res[0]
}
m := gzb.Message{
Stream: msg.Channel,
Topic: topic,
Content: msg.Username + msg.Text,
}
resp, err := b.bot.Message(m)
if err != nil {
return "", err
}
if resp != nil {
defer resp.Body.Close()
res, err := ioutil.ReadAll(resp.Body)
if err != nil {
return "", err
}
var jr struct {
ID int `json:"id"`
}
err = json.Unmarshal(res, &jr)
if err != nil {
return "", err
}
return strconv.Itoa(jr.ID), nil
}
return "", nil
}
func (b *Bzulip) handleUploadFile(msg *config.Message) (string, error) {
for _, f := range msg.Extra["file"] {
fi := f.(config.FileInfo)
if fi.Comment != "" {
msg.Text += fi.Comment + ": "
}
if fi.URL != "" {
msg.Text = fi.URL
if fi.Comment != "" {
msg.Text = fi.Comment + ": " + fi.URL
}
}
_, err := b.sendMessage(*msg)
if err != nil {
return "", err
}
}
return "", nil
}
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