Add 10-second preparation countdown to !duel

lib/commands/implementations/duel.js

@@ -51,8 +51,7 @@ function injectHomoglyph(phrase) {
 function duel(defaultMuteDuration) {
   let duelActive = false;
   let failSafeTimeout = null;
-
-  return (input, services, rawMessage) => {
+  return (input, services) => {
     if (duelActive) {
       return new CommandOutput(
         null,
@@ -82,56 +81,61 @@ function duel(defaultMuteDuration) {
     }
 
     const muteString = formatDuration(moment.duration(muteDuration, 'seconds'));
-    const phrase = generatePhrase();
-    const displayPhrase = injectHomoglyph(phrase);
-
-    const listener = services.messageRelay.startListenerForChatMessages('duel');
-    if (listener === false) {
-      return new CommandOutput(null, 'Something went wrong starting the duel. Try again.');
-    }
 
     duelActive = true;
 
-    failSafeTimeout = setTimeout(() => {
-      duelActive = false;
-      services.messageRelay.stopRelay('duel');
-      services.messageRelay.sendOutputMessage(
-        `DUEL between ${user1} and ${user2} has timed out. No one gets muted.`,
-      );
-    }, 30000);
-
-    listener.on('msg', (data) => {
-      const sender = data.user.toLowerCase();
-      if (sender !== user1.toLowerCase() && sender !== user2.toLowerCase()) {
-        return;
-      }
+    setTimeout(() => {
+      const phrase = generatePhrase();
+      const displayPhrase = injectHomoglyph(phrase);
 
-      if (data.message.trim().toLowerCase() !== phrase.toLowerCase()) {
+      const listener = services.messageRelay.startListenerForChatMessages('duel');
+      if (listener === false) {
+        duelActive = false;
+        services.messageRelay.sendOutputMessage(
+          'Something went wrong starting the duel. Try again.',
+        );
         return;
       }
 
-      clearTimeout(failSafeTimeout);
-      duelActive = false;
-      services.messageRelay.stopRelay('duel');
-
-      const winner = data.user;
-      const loser = sender === user1.toLowerCase() ? user2 : user1;
+      failSafeTimeout = setTimeout(() => {
+        duelActive = false;
+        services.messageRelay.stopRelay('duel');
+        services.messageRelay.sendOutputMessage(
+          `DUEL between ${user1} and ${user2} has timed out. No one gets muted.`,
+        );
+      }, 30000);
+
+      listener.on('msg', (data) => {
+        const sender = data.user.toLowerCase();
+        if (sender !== user1.toLowerCase() && sender !== user2.toLowerCase()) {
+          return;
+        }
+
+        if (data.message.trim().toLowerCase() !== phrase.toLowerCase()) {
+          return;
+        }
+
+        clearTimeout(failSafeTimeout);
+        duelActive = false;
+        services.messageRelay.stopRelay('duel');
+
+        const winner = data.user;
+        const loser = sender === user1.toLowerCase() ? user2 : user1;
+
+        services.messageRelay.sendOutputMessage(
+          `${winner} wins the duel! ${loser} gets muted for ${muteString}.`,
+        );
+        services.punishmentStream.write(makeMute(loser, muteDuration));
+      });
 
       services.messageRelay.sendOutputMessage(
-        `${winner} wins the duel! ${loser} gets muted for ${muteString}.`,
-      );
-      services.punishmentStream.write(
-        makeMute(
-          loser,
-          muteDuration,
-          `${loser} lost a duel to ${winner}, started by ${rawMessage.user}.`,
-        ),
+        `DUEL! ${user1} vs ${user2} -- First to type "${displayPhrase}" wins. Loser gets muted for ${muteString}. You have 30 seconds. GO!`,
       );
-    });
+    }, 10000);
 
     return new CommandOutput(
       null,
-      `DUEL! ${user1} vs ${user2} -- First to type "${displayPhrase}" wins. Loser gets muted for ${muteString}. You have 30 seconds.`,
+      `DUEL! ${user1} vs ${user2} -- Get ready! The phrase to type will appear in 10 seconds. Loser gets muted for ${muteString}.`,
     );
   };
 }