wa-js-part2

const { Client,  MessageMedia } = require('whatsapp-web.js');
var qrcode = require('qrcode-terminal');
const axios = require('axios');
const Scraper = require('@yimura/scraper').default;
const youtube = new Scraper();

function downloadGambar(url){
    return axios.get(url, {responseType: 'arraybuffer'})
        .then(response => Buffer.from(response.data, "binary").toString("base64"))
}

const client = new Client();


client.on('authenticated', (session) => {
    console.log('AUTHENTICATED', session);
});


client.on('qr', (qr) => {
        // Generate and scan this code with your phone
        console.log('QR RECEIVED', qr);

    qrcode.generate(qr, {small: true}, function (qrcode) {
            console.log(qrcode)
    });

});

client.on('ready', () => {
    console.log('Client is ready!');
});

const prefix = "!";

client.on('message', async msg => {
        if (msg.body == '!ping') {
            msg.reply('pong');
        }

    if (msg.body == "selamat pagi") {
        client.sendMessage(msg.from, 'selamat pagi juga');
    }

    if (msg.body[0] == prefix){
        var [cmd, ...args] = msg.body.slice(1).split(" ");
        args = args.join(" ");

        if (cmd == "say"){
            client.sendMessage(msg.from, args);
        }

        if (cmd == "gambar"){
            const media = MessageMedia.fromFilePath('./anime/anime-cry.gif');
            client.sendMessage(msg.from, media);
        }
        if (cmd == "kanata"){
            //https://i.waifu.pics/sS-rREz.jpg
            const gambar = await downloadGambar("https://i.waifu.pics/sS-rREz.jpg");
            const media = new MessageMedia('image/jpg', gambar);
            client.sendMessage(msg.from, media);
        }

        if (cmd == "yt" || cmd == "youtube"){
            youtube.search(args).then(results => {
                    //console.log(results.videos[0]);
                client.sendMessage(msg.from,  results.videos[0].description + " " + results.videos[0].link );
            });
        }

    }


});

client.initialize();