Ignore message if it contains a URL

bot.js

@@ -171,30 +171,45 @@ function onMessageHandler (channel, userstate, message, self) {
 				console.log(`* buttsbot: User not authorized`);
 			}
 		} else {	
+			// ignore commands
 			if (message.startsWith("!"))
 				return;
 	
+			// ignore ignored users
 			if (config.ignoredUsers.includes(userstate['display-name']) || config.ignoredUsers.includes(userstate['username'])) {
 				console.log(`* User ${userstate['username']} is on the ignore list.`);
 				return;
 			}
+
+			// ignore messages containing URLs
+			let regex = /((http(s)?(\:\/\/))*(www\.)?([\w\-\.\/])*(\.[a-zA-Z]{2,3}\/?))[^\s\b\n|]*[^.,;:\?\!\@\^\$ -]/g;
+			let matches = message.match(regex);
+			if (matches && matches.length > 0) {
+				console.log(`* Message contained URL - skip`);
+				return;
+			}
+
+			// split messages into word array and try to determine syllabes
+			var words = message.split(' ');
+			var syllables = words.map(syllabify);
+			
+			// calculate syllabe count
+			var syllableCount = 0;
+			syllables.forEach((s) => {
+				syllableCount += s.length;
+			});
+
+			// ignore message if it doesn't contain enough syllabes
+			if (syllableCount < config.syllableCount) {
+				console.log(`* Message had too few syllables`);
+				return;
+			}
 	
+			// random chance
+			// TODO: find a better alternative
 			var number = Math.random() * 100;
 			if (number <= config.chance) {
-	
-				var words = message.split(' ');
-				var syllables = words.map(syllabify);
-				var syllableCount = 0;
 
-				syllables.forEach((s) => {
-					syllableCount += s.length;
-				});
-
-				if (syllableCount < config.syllableCount) {
-					console.log(`* Message had too few syllables`);
-					return;
-				}
-	
 				var buttCount = Math.ceil(words.length / config.limit);
 	
 				var randomNumbersUsed = [];