Add rng function

lorebot/lorebot.go

@@ -199,7 +199,7 @@ func staticCommandHandler(rtm *slack.RTM, ev *slack.MessageEvent, redisClient *r
 	case "help2":
 		advancedhelpmsg(rtm, ev)
 	case "rng":
-		rtm.SendMessage(rtm.NewOutgoingMessage("command not yet supported", ev.Channel))
+		rnghandler(rtm, ev, redisClient)
 	case "version":
 		rtm.SendMessage(rtm.NewOutgoingMessage("command not yet supported", ev.Channel))
 	case "lorelist":
@@ -269,6 +269,24 @@ func rekhandler(rtm *slack.RTM, ev *slack.MessageEvent, target string, redisClie
 	rtm.SendMessage(rtm.NewOutgoingMessage(rekFmt, ev.Channel))
 }
 
+func rnghandler(rtm *slack.RTM, ev *slack.MessageEvent, redisClient *redis.Client) {
+	// get random lore from list
+	rngLore, err := redisClient.SRandMember("index:lore:added").Result()
+	if err != nil {
+		fmt.Printf("%v\n", err)
+	}
+
+	// get lore content
+	rngContent, err := loreCheck(rngLore, "lore", redisClient)
+	if err != nil {
+		fmt.Printf("%v\n", err)
+		rtm.SendMessage(rtm.NewOutgoingMessage("beep boop.. broken bot..", ev.Channel))
+		return
+	}
+	rngMsg := fmt.Sprintf("Random lore: `%s`\n%s", rngLore, rngContent)
+	rtm.SendMessage(rtm.NewOutgoingMessage(rngMsg, ev.Channel))
+}
+
 func gnuhandler(rtm *slack.RTM, ev *slack.MessageEvent, target string) {
 	gnuFmt := fmt.Sprintf("slaps the nonfree software out of %s's hands", target)
 	rtm.SendMessage(rtm.NewOutgoingMessage(gnuFmt, ev.Channel))