Improve Jeopardy cashout message

Print only a single message instead of one per winner to reduce chat
clutter.
Skip cashout to users who won less than the possible cashout value as
limited by the division value to avoid congratulating someone who only
gets 0.
Abort should a regression cause the logic to process an empty set of
finishers to prevent unexpected behavior.

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>

wat/integration.go

@@ -65,6 +65,23 @@ func (w *WatIntegration) Jeopardy(m *irc.Message, msgargs []string) {
 	//   8. The result is an array like "[nick1:1000, nick2:2000]"
 	finisherPrizes := strings.Split(strings.Replace(strings.Replace(strings.Replace(strings.Replace(strings.Join(msgargs[2:], " "), ") (", ";", -1), ": ", ":", -1), "(", "", 1), ")", "", 1), ";")
 	fmt.Printf("Processing Jeopardy: %s\n", finisherPrizes)
+	var msg string
+	var many bool
+	fiprcount := len(finisherPrizes)
+	cashoutcount := 0
+	// only a single winner
+	if fiprcount == 1 {
+		msg = "smartass %s :) gave u %d"
+		many = false
+	// multiple winners
+	} else if fiprcount > 1 {
+		msg = "gang of smartasses :) gave %s %d"
+		many = true
+	// no winners (should never get here)
+	} else {
+		fmt.Printf("Empty finishers, aborting Jeopardy processing")
+		return
+	}
 	// iterate over the "$nick:$value" string elements
 	for _, pair := range finisherPrizes {
 		// turn the string element into an array, where the first entry is the nickname, and the second the value
@@ -77,6 +94,10 @@ func (w *WatIntegration) Jeopardy(m *irc.Message, msgargs []string) {
 		name := nameCoinPair[0]
 		// Jeopardy prizes are quite a lot of $$$, make it a bit more sane
 		coins = coins / 40
+		if coins == 0 {
+			continue
+		}
+		cashoutcount += 1
 		// name   = we assume the Jeopardy player name to match a Watbot player name
 		// host   = we could use some WHO logic to find the host, but assuming nickname lookup to be sufficient here
 		// create = based on the above, maybe rather not create Watbot players based on only a nick?
@@ -85,10 +106,21 @@ func (w *WatIntegration) Jeopardy(m *irc.Message, msgargs []string) {
 		if player.Nick == "" {
 			fmt.Printf("Player %s does not exist in Watbot, skipping cashout.\n", name)
 			continue
-		} else {
-			w.bot.reply(m, fmt.Sprintf("smartass %s, gave u %d :)", player.Nick, coins))
+		}
+		// fill previous format placeholders
+		msg = fmt.Sprintf(msg, player.Nick, coins)
+		if many {
+			// append additional ones for filling in the next loop iteration
+			msg = msg + ", %s %d"
+		}
 		player.Coins += coins
 		w.db.Update(player)
 	}
+	if many {
+		// remove format placeholders from last loop iteration
+		msg = strings.Replace(msg, ", %s %d", ".", 1)
+	}
+	if cashoutcount > 0 {
+		w.bot.reply(m, msg)
 	}
 }