const { chromium } = require('playwright');

let browser = null;
let browserLaunchPromise = null;

async function getBrowser() {
    if (browser && browser.isConnected()) {
        return browser;
    }

    if (browserLaunchPromise) {
        return browserLaunchPromise;
    }

    browserLaunchPromise = chromium.launch({
        headless: true,
        args: [
            '--no-sandbox',
            '--disable-setuid-sandbox',
            '--disable-dev-shm-usage',
            '--disable-accelerated-2d-canvas',
            '--disable-gpu',
        ],
    });

    try {
        browser = await browserLaunchPromise;
        browserLaunchPromise = null;
        return browser;
    } catch (error) {
        browserLaunchPromise = null;
        throw error;
    }
}

async function closeBrowser() {
    if (browser) {
        await browser.close();
        browser = null;
    }
}

function isBrowserConnected() {
    return browser && browser.isConnected();
}

module.exports = {
    getBrowser,
    closeBrowser,
    isBrowserConnected,
};