feat(notification): twitter integration (#224)

src/notification/notification.ts

@@ -8,6 +8,7 @@ import {sendPushoverNotification} from './pushover';
 import {sendSMS} from './sms';
 import {sendSlackMessage} from './slack';
 import {sendTelegramMessage} from './telegram';
+import {sendTweet} from './twitter';
 
 const notifications = Config.notifications;
 
@@ -46,4 +47,13 @@ export function sendNotification(cartUrl: string, link: Link) {
 	if (notifications.desktop) {
 		sendDesktopNotification(cartUrl, link);
 	}
+
+	if (
+		notifications.twitter.accessTokenKey &&
+		notifications.twitter.accessTokenSecret &&
+		notifications.twitter.consumerKey &&
+		notifications.twitter.consumerSecret
+	) {
+		sendTweet(cartUrl, link);
+	}
 }

src/notification/twitter.ts

@@ -0,0 +1,29 @@
+import {Config} from '../config';
+import {Link} from '../store/model';
+import {Logger} from '../logger';
+import Twitter from 'twitter';
+
+const twitter = Config.notifications.twitter;
+
+const client = new Twitter({
+	access_token_key: twitter.accessTokenKey,
+	access_token_secret: twitter.accessTokenSecret,
+	consumer_key: twitter.consumerKey,
+	consumer_secret: twitter.consumerSecret
+});
+
+export function sendTweet(cartUrl: string, link: Link) {
+	let status = `🛎️ Stock Notification: ${link.brand} ${link.model}\n${cartUrl}`;
+
+	if (twitter.tweetTags) {
+		status += `\n\n${twitter.tweetTags}`;
+	}
+
+	client.post('statuses/update', {status}, err => {
+		if (err) {
+			Logger.error(err);
+		} else {
+			Logger.info(`↗ twitter notification sent: ${cartUrl}`);
+		}
+	});
+}