slack: add image support

* Make untappd checkins embed images
* Added attachment types as an optional send arg

bot/interfaces.go

@@ -30,6 +30,11 @@ const (
 	SelfMessage
 )
 
+type ImageAttachment struct {
+	URL    string
+	AltTxt string
+}
+
 type Kind int
 type Callback func(Kind, msg.Message, ...interface{}) bool
 type CallbackMap map[string]map[Kind][]Callback

connectors/irc/irc.go

@@ -60,9 +60,9 @@ func (i *Irc) Send(kind bot.Kind, args ...interface{}) (string, error) {
 	switch kind {
 	case bot.Reply:
 	case bot.Message:
-		return i.sendMessage(args[0].(string), args[1].(string))
+		return i.sendMessage(args[0].(string), args[1].(string), args...)
 	case bot.Action:
-		return i.sendAction(args[0].(string), args[1].(string))
+		return i.sendAction(args[0].(string), args[1].(string), args...)
 	default:
 	}
 	return "", nil
@@ -73,7 +73,7 @@ func (i *Irc) JoinChannel(channel string) {
 	i.Client.Out <- irc.Msg{Cmd: irc.JOIN, Args: []string{channel}}
 }
 
-func (i *Irc) sendMessage(channel, message string) (string, error) {
+func (i *Irc) sendMessage(channel, message string, args ...interface{}) (string, error) {
 	for len(message) > 0 {
 		m := irc.Msg{
 			Cmd:  "PRIVMSG",
@@ -96,15 +96,32 @@ func (i *Irc) sendMessage(channel, message string) (string, error) {
 		<-throttle
 
 		i.Client.Out <- m
+
+		if len(args) > 0 {
+			for _, a := range args {
+				switch a := a.(type) {
+				case bot.ImageAttachment:
+					m = irc.Msg{
+						Cmd: "PRIVMSG",
+						Args: []string{channel, fmt.Sprintf("%s: %s",
+							a.AltTxt, a.URL)},
+					}
+
+					<-throttle
+
+					i.Client.Out <- m
+				}
+			}
+		}
 	}
 	return "NO_IRC_IDENTIFIERS", nil
 }
 
 // Sends action to channel
-func (i *Irc) sendAction(channel, message string) (string, error) {
+func (i *Irc) sendAction(channel, message string, args ...interface{}) (string, error) {
 	message = actionPrefix + " " + message + "\x01"
 
-	return i.sendMessage(channel, message)
+	return i.sendMessage(channel, message, args...)
 }
 
 func (i *Irc) GetEmojiList() map[string]string {

connectors/slackapp/slackApp.go

@@ -171,9 +171,9 @@ func (s *SlackApp) msgReceivd(msg *slackevents.MessageEvent) {
 func (s *SlackApp) Send(kind bot.Kind, args ...interface{}) (string, error) {
 	switch kind {
 	case bot.Message:
-		return s.sendMessage(args[0].(string), args[1].(string))
+		return s.sendMessage(args[0].(string), args[1].(string), false, args...)
 	case bot.Action:
-		return s.sendAction(args[0].(string), args[1].(string))
+		return s.sendMessage(args[0].(string), args[1].(string), true, args...)
 	case bot.Edit:
 		return s.edit(args[0].(string), args[1].(string), args[2].(string))
 	case bot.Reply:
@@ -192,20 +192,45 @@ func (s *SlackApp) Send(kind bot.Kind, args ...interface{}) (string, error) {
 	return "", fmt.Errorf("No handler for message type %d", kind)
 }
 
-func (s *SlackApp) sendMessageType(channel, message string, meMessage bool) (string, error) {
+func (s *SlackApp) sendMessage(channel, message string, meMessage bool, args ...interface{}) (string, error) {
 	ts, err := "", fmt.Errorf("")
 	nick := s.config.Get("Nick", "bot")
 
-	if meMessage {
+	options := []slack.MsgOption{
-		_, ts, err = s.api.PostMessage(channel,
+		slack.MsgOptionUsername(nick),
-			slack.MsgOptionUsername(nick),
+		slack.MsgOptionText(message, false),
-			slack.MsgOptionText(message, false),
-			slack.MsgOptionMeMessage())
-	} else {
-		_, ts, err = s.api.PostMessage(channel,
-			slack.MsgOptionUsername(nick),
-			slack.MsgOptionText(message, false))
 	}
+	if meMessage {
+		options = append(options, slack.MsgOptionMeMessage())
+	}
+
+	// Check for message attachments
+	attachments := []slack.Attachment{}
+	if len(args) > 0 {
+		for _, a := range args {
+			switch a := a.(type) {
+			case bot.ImageAttachment:
+				attachments = append(attachments, slack.Attachment{
+					ImageURL: a.URL,
+					Text:     a.AltTxt,
+				})
+			}
+		}
+	}
+
+	if len(attachments) > 0 {
+		options = append(options, slack.MsgOptionAttachments(attachments...))
+	}
+
+	log.Debug().
+		Str("channel", channel).
+		Str("message", message).
+		Int("attachment count", len(attachments)).
+		Int("option count", len(options)).
+		Int("arg count", len(args)).
+		Msg("Sending message")
+
+	_, ts, err = s.api.PostMessage(channel, options...)
 
 	if err != nil {
 		log.Error().Err(err).Msg("Error sending message")
@@ -215,24 +240,6 @@ func (s *SlackApp) sendMessageType(channel, message string, meMessage bool) (str
 	return ts, nil
 }
 
-func (s *SlackApp) sendMessage(channel, message string) (string, error) {
-	log.Debug().
-		Str("channel", channel).
-		Str("message", message).
-		Msg("Sending message")
-	identifier, err := s.sendMessageType(channel, message, false)
-	return identifier, err
-}
-
-func (s *SlackApp) sendAction(channel, message string) (string, error) {
-	log.Debug().
-		Str("channel", channel).
-		Str("message", message).
-		Msg("Sending action")
-	identifier, err := s.sendMessageType(channel, "_"+message+"_", true)
-	return identifier, err
-}
-
 func (s *SlackApp) replyToMessageIdentifier(channel, message, identifier string) (string, error) {
 	nick := s.config.Get("Nick", "bot")
 	icon := s.config.Get("IconURL", "https://placekitten.com/128/128")

plugins/beers/beers.go

@@ -408,11 +408,18 @@ func (p *BeersPlugin) checkUntappd(channel string) {
 				msg, checkin.Checkin_comment)
 		}
 
+		args := []interface{}{
+			channel,
+			msg,
+		}
 		if checkin.Media.Count > 0 {
 			if strings.Contains(checkin.Media.Items[0].Photo.Photo_img_lg, "photos-processing") {
 				continue
 			}
-			msg += "\nHere's a photo: " + checkin.Media.Items[0].Photo.Photo_img_lg
+			args = append(args, bot.ImageAttachment{
+				URL:    checkin.Media.Items[0].Photo.Photo_img_lg,
+				AltTxt: "Here's a photo",
+			})
 		}
 
 		user.lastCheckin = checkin.Checkin_id
@@ -427,7 +434,7 @@ func (p *BeersPlugin) checkUntappd(channel string) {
 			Int("checkin_id", checkin.Checkin_id).
 			Str("msg", msg).
 			Msg("checkin")
-		p.Bot.Send(bot.Message, channel, msg)
+		p.Bot.Send(bot.Message, args...)
 	}
 }