From 3ed45fb624bb6dbab54820524c54a22988ac1980 Mon Sep 17 00:00:00 2001
From: Daniil Yastremskiy <Catharsis@post.cz>
Date: Sun, 29 Jan 2017 18:55:11 +0300
Subject: [PATCH] examples: Add webhook example for Heroku (#271)

---
 examples/herokuWebHook.js | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 examples/herokuWebHook.js

diff --git a/examples/herokuWebHook.js b/examples/herokuWebHook.js
new file mode 100644
index 00000000..6ae5fc95
--- /dev/null
+++ b/examples/herokuWebHook.js
@@ -0,0 +1,36 @@
+/**
+ * This example demonstrates setting up webhook
+ * on the Heroku platform.
+ */
+
+
+const TOKEN = process.env.TELEGRAM_TOKEN || 'YOUR_TELEGRAM_BOT_TOKEN';
+const TelegramBot = require('..');
+
+const options = {
+  webHook: {
+    //Port which you should bind to is assigned to $PORT variable
+    //See: https://devcenter.heroku.com/articles/dynos#local-environment-variables
+    port: process.env.PORT
+    // you do NOT need to set up certificates since Heroku provides
+    // the SSL certs already (https://<app-name>.herokuapp.com)
+    // Also no need to pass IP because on Heroku you need to bind to 0.0.0.0
+  }
+};
+// Heroku routes from port :443 to $PORT
+// Add URL of your app to env variable or enable Dyno Metadata
+// to get this automatically
+// See: https://devcenter.heroku.com/articles/dyno-metadata
+const url = process.env.APP_URL || 'https://<app-name>.herokuapp.com:443';
+const bot = new TelegramBot(TOKEN, options);
+
+
+// This informs the Telegram servers of the new webhook.
+// Note: we do not need to pass in the cert, as it already provided
+bot.setWebHook(`${url}/bot${TOKEN}`);
+
+
+// Just to ping!
+bot.on('message', function onMessage(msg) {
+  bot.sendMessage(msg.chat.id, 'Running on Heroku!');
+});