/**
 * Real Browser 启动：puppeteer-real-browser（抗 Cloudflare Turnstile）
 * 注意：不与 puppeteer-extra 混用在同一 Browser 实例
 */
const {
    BASE_LAUNCH_ARGS,
    resolveChromeExecutable,
} = require('./constants');

/** @type {boolean|null} */
let realBrowserModuleChecked = null;

/** @type {boolean} */
let realBrowserAvailable = false;

/**
 * 检测 puppeteer-real-browser 是否已安装
 * @returns {boolean}
 */
function isRealBrowserAvailable() {
    if (realBrowserModuleChecked !== null) {
        return realBrowserAvailable;
    }
    try {
        require.resolve('puppeteer-real-browser');
        realBrowserAvailable = true;
    } catch (_) {
        realBrowserAvailable = false;
    }
    realBrowserModuleChecked = true;
    return realBrowserAvailable;
}

/**
 * 启动 real profile Browser（headless:false + Xvfb + turnstile 内置点击）
 * @param {string[]} [extraArgs]
 * @returns {Promise<{ browser: import('puppeteer').Browser, page: import('puppeteer').Page }>}
 */
async function launchRealBrowser(extraArgs = []) {
    if (!isRealBrowserAvailable()) {
        throw new Error(
            'puppeteer-real-browser 未安装。请在 puppeteer-api 目录执行: npm install puppeteer-real-browser@1.4.4'
        );
    }

    const { connect } = require('puppeteer-real-browser');
    const chromePath = resolveChromeExecutable();

    const result = await connect({
        headless: false,
        turnstile: true,
        disableXvfb: false,
        customConfig: { chromePath },
        args: [...BASE_LAUNCH_ARGS, '--mute-audio', ...extraArgs],
    });

    const browser = result.browser;
    const page = result.page;

    if (!browser || !page) {
        throw new Error('puppeteer-real-browser connect 未返回 browser/page');
    }

    return { browser, page };
}

module.exports = {
    isRealBrowserAvailable,
    launchRealBrowser,
};