import Puppeteer from 'puppeteer';
import {extendPage} from './extensions';
import {url as defaultURL} from './config';

export async function getBrowser() {
    const args = [
        `--window-size=${ 1920 },${ 1080 }`,
        // '--disable-gpu'
        // '--no-sandbox',
        // '--single-process',
        // '--no-zygote',
        // '--disable-dev-shm-usage'
        // '--full-memory-crash-report',
        // '--unlimited-storage'
    ];

    const env = process.env;

    if (env.E2E_DEBUG) {
        args.push('--auto-open-devtools-for-tabs');
        env.E2E_SHOW = true;
    }

    const headless = env.E2E_SHOW ? false : 'new';

    const browser = await Puppeteer.launch({
        args,
        defaultViewport: null,
        headless: headless,
        slowMo: 20, // slow down by ms
        // ignoreDefaultArgs: ['--disable-extensions'],
        // executablePath: '/usr/bin/google-chrome-stable',
        // executablePath: '/usr/bin/firefox-developer-edition',
    });

    let page = (await browser.pages())[0];
    await page.evaluateOnNewDocument(() => {
        Object.defineProperty(navigator, 'language', {
            get: function() {
                return 'en';
            }
        });
        Object.defineProperty(navigator, 'languages', {
            get: function() {
                return ['en'];
            }
        });
    });
    page = extendPage(page);
    page.setDefaultTimeout(5000);

    await page.goto(defaultURL, {waitUntil: 'load'});
    return {page, close: browser.close.bind(browser)};
}

export default getBrowser;