Added email spamming throttle

common/throttle.js

@@ -0,0 +1,31 @@
+let CronJob = require('cron').CronJob;
+
+let emails = [];
+
+function throttle(email) {
+	emails[email] = new Date();
+}
+
+function isThrottled(email) {
+	if (emails[email] === undefined) {
+		return false;
+	}
+
+	if ( (emails[email] - new Date()) / 1000 > 3) { //3 seconds
+		return false;
+	}
+
+	return true;
+}
+
+//clear the memory once a day
+let job = new CronJob('0 7 * * * *', () => {
+	emails = [];
+});
+
+job.start();
+
+module.exports = {
+	throttle: throttle,
+	isThrottled: isThrottled
+};