TwitchNotificationBot

main.js

// Include Telegraf module
const Telegraf = require('telegraf');
const twitch = require('twitch-api-v5');

twitch.clientID = '';
const bot = new Telegraf('');

const channelName = '';
const telegramGroupId = -1;
const pinNotification = true;

var lastStream;
var lastPinnedMessage;

function update() {
    console.log('Checking user ' + channelName + '!');
    // Resolve user id by name
    twitch.users.usersByName({users: [channelName]}, (error, result) => {
        var userId = result.users[0]._id; // We requested a single name, grab the first element
        console.log('UserId is ' + userId + '!');
        // Get the channel's current stream
        twitch.streams.channel({channelID: userId}, (error, result) => {
            var stream = result.stream;
            if(!stream) {
                // Handle offline
                console.log('Not online!');
                // Unpin the pinned notification, if present
                if(lastPinnedMessage) {
                    bot.telegram.getChat(telegramGroupId).then(chat => {
                        var pinnedMessage = chat.pinned_message;
                        if(!pinnedMessage || pinnedMessage.message_id != lastPinnedMessage) {
                            lastPinnedMessage = null;
                            return;
                        }
                        console.log('Unpinnig notification!'); 
                        bot.telegram.unpinChatMessage(telegramGroupId);
                        lastPinnedMessage = null;
                    });
                }
                return;
            }
            // Handle online
            var channel = stream.channel;
            var title = channel.status;
            console.log('Online: ' + title);
            // Check if this stream was already notified
            if(lastStream == stream._id) {
               console.log('Already notified! Skip...');
               return;
            }
            lastStream = stream._id;
            console.log('New stream detected! Notify!');
            // Send notification and pin message
            bot.telegram.sendMessage(telegramGroupId, title + " | IN ONDA | " + channel.url).then(result => {
                var messageId = result.message_id;
                if(pinNotification) {
                    bot.telegram.pinChatMessage(telegramGroupId, messageId);
                    lastPinnedMessage = messageId;
                }
            });
        });
    });
}

// First update
update();
// Schedule next updates
setInterval(update, 60 * 1000);