/* eslint-disable eslint-comments/disable-enable-pair */
/* eslint-disable @typescript-eslint/no-var-requires */
/* eslint-disable eslint-comments/no-unlimited-disable */
const { spawn } = require('child_process');
const puppeteer = require('puppeteer');
const { join, dirname } = require('path');
const fs = require('fs');
const getNpmRegistry = require('getnpmregistry');
const execa = require('execa');

const env = Object.create(process.env);
env.BROWSER = 'none';
env.TEST = true;
env.COMPRESS = 'none';
env.PROGRESS = 'none';
env.BLOCK_PAGES_LAYOUT = 'blankLayout';

let browser;

const startServer = async path => {
  let once = false;
  return new Promise(resolve => {
    env.PAGES_PATH = path + '/src';
    console.log(path);
    const startServer = spawn(/^win/.test(process.platform) ? 'npm.cmd' : 'npm', ['run', 'start'], {
      env,
    });

    console.log('Starting development server');
    startServer.stdout.on('data', data => {
      console.log(data.toString());
      // hack code , wait umi
      if (!once && data.toString().indexOf('Compiled successfully') >= 0) {
        // eslint-disable-next-line
        once = true;
        return resolve(startServer);
      }
    });
  });
};

const autoScroll = page => {
  return page.evaluate(() => {
    return new Promise((resolve, reject) => {
      var totalHeight = 0;
      var distance = 100;
      var timer = setInterval(() => {
        var scrollHeight = document.body.scrollHeight;
        window.scrollBy(0, distance);
        totalHeight += distance;
        if (totalHeight >= scrollHeight) {
          clearInterval(timer);
          resolve();
        }
      }, 100);
    });
  });
};

const getImage = async (page, path) => {
  const server = await startServer(path);

  await page.reload('http://127.0.0.1:8000');

  await page.setViewport({
    width: 1440,
    height: 800,
  });

  await autoScroll(page);

  await page.screenshot({
    path: join(path, 'snapshot.png'),
    fullPage: true,
  });

  server.kill();
};

const openBrowser = async () => {
  browser = await puppeteer.launch({
    headless: false,
    args: [
      '--disable-gpu',
      '--disable-dev-shm-usage',
      '--no-first-run',
      '--no-zygote',
      '--no-sandbox',
    ],
  });
  const page = await browser.newPage();
  page.goto('http://127.0.0.1:8000');
  return page;
};

const getAllFile = async () => {
  const cwd = join(__dirname, '../');
  const files = fs.readdirSync(cwd);
  return files.filter(path => {
    const itemPath = join(cwd, path);
    const stat = fs.statSync(itemPath);
    if (path.includes('.') || path.includes('_') || path.includes('node_modules')) {
      return false;
    }
    if (stat.isDirectory()) {
      return true;
    }
    return false;
  });
};

getAllFile().then(async dirList => {
  const registry = await getNpmRegistry();
  const page = await openBrowser();
  const loopGetImage = async index => {
    try {
      console.log('install ' + dirList[index] + ' dependencies');
      await execa('yarn', ['install', `--registry=${registry}`], {
        cwd: join(__dirname, '../' + dirList[index]),
      });
      await getImage(page, dirList[index]);

      if (dirList.length > index) {
        console.log('Screenshot ' + dirList[index]);

        return loopGetImage(index + 1);
      }
    } catch (error) {
      console.log(error);
    }
    return Promise.resolve(true);
  };
  await loopGetImage(0);
  browser.close();
});