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

export async function getBrowser() {
    const args = [
        `--no-sandbox`,
        `--window-size=${ 1920 },${ 1080 }`
    ];

    let env = process.env;

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

    const headless = !env.E2E_SHOW;
    const browser = await Puppeteer.launch({
        args,
        defaultViewport: null,
        headless: headless,
        slowMo: 0, // slow down by ms
    });

    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(4000);
    await page.goto(defaultURL, {waitUntil: 'load'});
    return {page, close: browser.close.bind(browser)};
}

export default getBrowser;