feat(notification): add telegram (#71)

src/notification/notification.ts

@@ -4,6 +4,7 @@ import {sendSMS} from './sms';
 import {playSound} from './sound';
 import {sendSlackMessage} from './slack';
 import sendPushoverNotification from './pushover';
+import {sendTelegramMessage} from './telegram';
 
 export function sendNotification(cartUrl: string) {
 	if (Config.notifications.email.username && Config.notifications.email.password) {
@@ -14,6 +15,10 @@ export function sendNotification(cartUrl: string) {
 		sendSlackMessage(cartUrl);
 	}
 
+	if (Config.notifications.telegram.botToken && Config.notifications.telegram.chatId) {
+		sendTelegramMessage(cartUrl);
+	}
+
 	if (Config.notifications.phone.number) {
 		const carrier = Config.notifications.phone.carrier.toLowerCase();
 		if (carrier && Config.notifications.phone.availableCarriers.has(carrier)) {
@@ -25,7 +30,7 @@ export function sendNotification(cartUrl: string) {
 		sendPushoverNotification(cartUrl);
 	}
 
-	if (Config.notifications.playSound) {
+	if (Config.notifications.playSound !== 'false') {
 		playSound();
 	}
 }

src/notification/telegram.ts

@@ -0,0 +1,21 @@
+import {Config} from '../config';
+import {Logger} from '../logger';
+import {TelegramClient} from 'messaging-api-telegram';
+
+const chatId = Config.notifications.telegram.chatId;
+const accessToken = Config.notifications.telegram.botToken;
+
+const client = new TelegramClient({
+	accessToken
+});
+
+export function sendTelegramMessage(text: string) {
+	(async () => {
+		try {
+			await client.sendMessage(chatId, text);
+			Logger.info(`✔ telegram message sent to '${chatId}': ${text}`);
+		} catch (error) {
+			Logger.error(error);
+		}
+	})();
+}