Add ping command per issue 47 (#50)

Co-authored-by: M Mou <[email protected]>

Author: ddworken

src/keybaseca/bot/bot.go

@@ -85,8 +85,15 @@ func StartBot(conf config.Config) error {
 			continue
 		}
 
-		if shared.IsAckRequest(messageBody) {
-			log.Debug("Responding to AckMessage")
+		if shared.IsPingRequest(messageBody, kbc.GetUsername()) {
+			// Respond to messages of the form `ping @botName` with `pong @senderName`
+			log.Debug("Responding to ping with pong")
+			_, err = kbc.SendMessageByConvID(msg.Message.ConvID, fmt.Sprintf(shared.GeneratePingResponse(msg.Message.Sender.Username)))
+			if err != nil {
+				LogError(conf, kbc, msg, err)
+				continue
+			}
+		} else if shared.IsAckRequest(messageBody) {
 			// Ack any AckRequests so that kssh can determine whether it has fully connected
 			_, err = kbc.SendMessageByConvID(msg.Message.ConvID, shared.GenerateAckResponse(messageBody))
 			if err != nil {

src/shared/chat_types.go

@@ -80,3 +80,23 @@ func IsAckRequest(msg string) bool {
 func IsAckResponse(msg string) bool {
 	return strings.HasPrefix(msg, "Ack--")
 }
+
+// Generate a ping request message
+func GeneratePingRequest(botname string) string {
+	return fmt.Sprintf("ping @%s", botname)
+}
+
+// Returns whether the given message is a ping request
+func IsPingRequest(msg, botUsername string) bool {
+	return strings.TrimSpace(msg) == fmt.Sprintf("ping @%s", botUsername)
+}
+
+// Generate a ping response message
+func GeneratePingResponse(botname string) string {
+	return fmt.Sprintf("pong @%s", botname)
+}
+
+// Returns whether the given message is a ping response
+func IsPingResponse(msg, localUsername string) bool {
+	return strings.TrimSpace(msg) == fmt.Sprintf("pong @%s", localUsername)
+}