const fs = require('fs');
const path = require('path');
const Puppeteer = require('macaca-puppeteer');

const puppeteer = new Puppeteer();

async function() {
  /**
    default options
    {
      headless: false,
      x: 0,
      y: 0,
      width: 800,
      height: 600,
      userAgent: 'userAgent string'
    }
  */
  await puppeteer.startDevice({
    headless: true // in silence
  });

  await puppeteer.maximize();
  await puppeteer.setWindowSize(null, 500, 500);
  await puppeteer.get('https://www.baidu.com');
  const imgData = await puppeteer.getScreenshot();
  const img = new Buffer(imgData, 'base64');
  const p = path.join(__dirname, '..', 'screenshot.png')
  fs.writeFileSync(p, img.toString('binary'), 'binary');
  console.log(`screenshot: ${p}`);

  await puppeteer.stopDevice();
};