Add support for edited messages (discord)

bridge/discord/discord.go

@@ -52,6 +52,7 @@ func (b *bdiscord) Connect() error {
 	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)
@@ -104,6 +105,18 @@ func (b *bdiscord) Send(msg config.Message) error {
 	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 {

matterbridge.toml.sample

@@ -391,6 +391,14 @@ Token="Yourtokenhere"
 #REQUIRED
 Server="yourservername"
 
+#Disable sending of edits to other bridges
+#OPTIONAL (default false)
+EditDisable=false
+
+#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