Add support for edited messages (gitter)

bridge/gitter/gitter.go

@@ -2,10 +2,12 @@ package bgitter
 
 import (
 	"fmt"
+	"strings"
+	"time"
+
 	"github.com/42wim/matterbridge/bridge/config"
 	log "github.com/Sirupsen/logrus"
 	"github.com/sromku/go-gitter"
-	"strings"
 )
 
 type Bgitter struct {
@@ -71,15 +73,39 @@ func (b *Bgitter) JoinChannel(channel string) error {
 	}
 	users, _ := b.c.GetUsersInRoom(roomID)
 	b.Users = append(b.Users, users...)
+
+	// we need to use (experimental) faye for edits.
+	// streaming API doesn't show edits.
+	if !b.Config.EditDisable {
+		faye := b.c.Faye(roomID)
+		go faye.Listen()
+		go func(stream *gitter.Faye, room string) {
+			for event := range stream.Event {
+				b.handleEvent(event, room)
+			}
+		}(faye, room.Name)
+		return nil
+	}
 	stream := b.c.Stream(roomID)
 	go b.c.Listen(stream)
 
 	go func(stream *gitter.Stream, room string) {
 		for event := range stream.Event {
+			b.handleEvent(event, room)
+		}
+	}(stream, room.Name)
+	return nil
+}
+
+func (b *Bgitter) handleEvent(event gitter.Event, room string) {
+	flog.Debugf("event: %#v %#v", event.Data, event.Data.(*gitter.MessageReceived).Message.EditedAt.Sub(time.Now()).String())
 	switch ev := event.Data.(type) {
 	case *gitter.MessageReceived:
 		// check for ZWSP to see if it's not an echo
 		if !strings.HasSuffix(ev.Message.Text, "​") {
+			if !ev.Message.EditedAt.IsZero() && !b.Config.EditDisable {
+				ev.Message.Text = ev.Message.Text + b.Config.EditSuffix
+			}
 			flog.Debugf("Sending message from %s on %s to gateway", ev.Message.From.Username, b.Account)
 			b.Remote <- config.Message{Username: ev.Message.From.Username, Text: ev.Message.Text, Channel: room,
 				Account: b.Account, Avatar: b.getAvatar(ev.Message.From.Username)}
@@ -87,9 +113,6 @@ func (b *Bgitter) JoinChannel(channel string) error {
 	case *gitter.GitterConnectionClosed:
 		flog.Errorf("connection with gitter closed for room %s", room)
 	}
-		}
-	}(stream, room.Name)
-	return nil
 }
 
 func (b *Bgitter) Send(msg config.Message) error {

changelog.md

@@ -1,8 +1,17 @@
 # v0.12.0
+## Changes
+* gitter: The default support for edited messages enables experimental FAYE support for gitter.
+  If you need stable code add EditDisable=true to your gitter configuration.
+
 ## New features
 * general: add support for edited messages. 
   Add new keyword EditDisable (false/true), default false. Which means by default edited messages will be sent to other bridges.
-  Add new keyword EditSuffix , default "". You can change this eg to "(edited)", this will be appended to every edit message.
+  Add new keyword EditSuffix , default "". You can change this eg to " (edited)", this will be appended to every edit message.
+
+* discord: Add support for edited messages. See EditDisable/EditSuffix
+* mattermost: Add support for edited messages. See EditDisable/EditSuffix
+* telegram: Add support for edited messages. See EditDisable/EditSuffix
+* gitter: Add support for edited messages. See EditDisable/EditSuffix
 
 ## Enhancements
 * discord: Strip custom emoji metadata (discord). Closes #148

matterbridge.toml.sample

@@ -282,6 +282,15 @@ ShowJoinPart=false
 #REQUIRED
 Token="Yourtokenhere"
 
+#Disable sending of edits to other bridges
+#WARNING: the default uses FAYE which is experimental. If you need stability set EditDisable=true
+#OPTIONAL (default false)
+EditDisable=true
+
+#Message to be appended to every edited message
+#OPTIONAL (default empty)
+EditSuffix=" (edited)"
+
 #Nicks you want to ignore. 
 #Messages from those users will not be sent to other bridges.
 #OPTIONAL