Add support for using avatars from discord,slack and gitter in slack

bridge/config/config.go

@@ -15,6 +15,7 @@ type Message struct {
 	Origin     string
 	FullOrigin string
 	Protocol   string
+	Avatar     string
 }
 
 type Protocol struct {

bridge/discord/discord.go

@@ -127,7 +127,7 @@ func (b *bdiscord) messageCreate(s *discordgo.Session, m *discordgo.MessageCreat
 		channelName = "ID:" + m.ChannelID
 	}
 	b.Remote <- config.Message{Username: m.Author.Username, Text: m.ContentWithMentionsReplaced(), Channel: channelName,
-		Origin: b.origin, Protocol: b.protocol, FullOrigin: b.FullOrigin()}
+		Origin: b.origin, Protocol: b.protocol, FullOrigin: b.FullOrigin(), Avatar: "https://cdn.discordapp.com/avatars/" + m.Author.ID + "/" + m.Author.Avatar + ".jpg"}
 }
 
 func (b *bdiscord) getChannelID(name string) string {

bridge/gitter/gitter.go

@@ -13,6 +13,7 @@ type Bgitter struct {
 	Remote   chan config.Message
 	protocol string
 	origin   string
+	Users    []gitter.User
 	Rooms    []gitter.Room
 }
 
@@ -64,6 +65,8 @@ func (b *Bgitter) JoinChannel(channel string) error {
 	if err != nil {
 		return err
 	}
+	users, _ := b.c.GetUsersInRoom(roomID)
+	b.Users = append(b.Users, users...)
 	stream := b.c.Stream(roomID)
 	go b.c.Listen(stream)
 
@@ -76,7 +79,7 @@ func (b *Bgitter) JoinChannel(channel string) error {
 				if !strings.HasSuffix(ev.Message.Text, "​") {
 					flog.Debugf("Sending message from %s on %s to gateway", ev.Message.From.Username, b.FullOrigin())
 					b.Remote <- config.Message{Username: ev.Message.From.Username, Text: ev.Message.Text, Channel: room,
-						Origin: b.origin, Protocol: b.protocol, FullOrigin: b.FullOrigin()}
+						Origin: b.origin, Protocol: b.protocol, FullOrigin: b.FullOrigin(), Avatar: b.getAvatar(ev.Message.From.Username)}
 				}
 			case *gitter.GitterConnectionClosed:
 				flog.Errorf("connection with gitter closed for room %s", room)
@@ -118,3 +121,15 @@ func (b *Bgitter) getRoomID(channel string) string {
 	}
 	return ""
 }
+
+func (b *Bgitter) getAvatar(user string) string {
+	var avatar string
+	if b.Users != nil {
+		for _, u := range b.Users {
+			if user == u.Username {
+				return u.AvatarURLSmall
+			}
+		}
+	}
+	return avatar
+}

bridge/slack/slack.go

@@ -24,6 +24,7 @@ type Bslack struct {
 	rtm      *slack.RTM
 	Plus     bool
 	Remote   chan config.Message
+	Users    []slack.User
 	protocol string
 	origin   string
 	si       *slack.Info
@@ -126,6 +127,9 @@ func (b *Bslack) Send(msg config.Message) error {
 	}
 	np.Username = nick
 	np.IconURL = config.GetIconURL(&msg, b.Config)
+	if msg.Avatar != "" {
+		np.IconURL = msg.Avatar
+	}
 	b.sc.PostMessage(schannel.ID, message, np)
 
 	/*
@@ -136,6 +140,18 @@ func (b *Bslack) Send(msg config.Message) error {
 	return nil
 }
 
+func (b *Bslack) getAvatar(user string) string {
+	var avatar string
+	if b.Users != nil {
+		for _, u := range b.Users {
+			if user == u.Name {
+				return u.Profile.Image48
+			}
+		}
+	}
+	return avatar
+}
+
 func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
 	if b.channels == nil {
 		return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.FullOrigin(), name)
@@ -166,7 +182,7 @@ func (b *Bslack) handleSlack() {
 		texts := strings.Split(message.Text, "\n")
 		for _, text := range texts {
 			flog.Debugf("Sending message from %s on %s to gateway", message.Username, b.FullOrigin())
-			b.Remote <- config.Message{Text: text, Username: message.Username, Channel: message.Channel, Origin: b.origin, Protocol: b.protocol, FullOrigin: b.FullOrigin()}
+			b.Remote <- config.Message{Text: text, Username: message.Username, Channel: message.Channel, Origin: b.origin, Protocol: b.protocol, FullOrigin: b.FullOrigin(), Avatar: b.getAvatar(message.Username)}
 		}
 	}
 }
@@ -201,6 +217,7 @@ func (b *Bslack) handleSlackClient(mchan chan *MMMessage) {
 		case *slack.ConnectedEvent:
 			b.channels = ev.Info.Channels
 			b.si = ev.Info
+			b.Users, _ = b.sc.GetUsers()
 		case *slack.InvalidAuthEvent:
 			flog.Fatalf("Invalid Token %#v", ev)
 		default:

vendor/github.com/42wim/go-gitter/gitter.go

@@ -125,6 +125,24 @@ func (gitter *Gitter) GetRooms() ([]Room, error) {
 	return rooms, nil
 }
 
+// GetUsersInRoom returns the users in the room with the passed id
+func (gitter *Gitter) GetUsersInRoom(roomID string) ([]User, error) {
+
+	var users []User
+	response, err := gitter.get(gitter.config.apiBaseURL + "rooms/" + roomID + "/users")
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	err = json.Unmarshal(response, &users)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+	return users, nil
+}
+
 // GetRoom returns a room with the passed id
 func (gitter *Gitter) GetRoom(roomID string) (*Room, error) {