import express, { json } from "express";
import cors from "cors";
import pLimit from "p-limit";
import BrowserPool from './pool/BrowserPool.js';
import { LRUCache } from 'lru-cache';
import fetch from 'node-fetch';
import { JSDOM } from 'jsdom';
import fs from 'fs/promises';

// Playwright with stealth plugin
import { chromium } from 'playwright-extra';
import StealthPlugin from 'puppeteer-extra-plugin-stealth';
chromium.use(StealthPlugin());

const app = express();
const PORT = process.env.PORT || 3000;
app.use(cors());
app.use(json());

const PROVIDERS = ["https://cdn.moviesapi.club"];
let browserPool;
const cache = new LRUCache({ max: 500, ttl: 15 * 60 * 1000 });
const limit = pLimit(2);

async function extractFirstIframeSrc(page, domain) {
    try {
        await page.waitForSelector('#player_iframe', { timeout: 15000 });
        const src = await page.evaluate(() => {
            const iframe = document.getElementById('player_iframe');
            if (!iframe) return null;
            
            let src = iframe.getAttribute('src') || '';
            if (src.startsWith('//')) {
                src = `https:${src}`;
            }
            return src;
        });
        
        if (!src) {
            throw new Error('First iframe src not found');
        }
        
        console.log(`[${domain}] Found first iframe src: ${src}`);
        return src;
    } catch (error) {
        console.error(`[${domain}] Error finding first iframe:`, error);
        throw error;
    }
}

async function getVideoAndSubtitles(finalUrl) {
    try {
        const response = await fetch(finalUrl);
        if (!response.ok) {
            throw new Error(`HTTP error! Status: ${response.status}`);
        }

        const html = await response.text();
        const dom = new JSDOM(html);
        const document = dom.window.document;
        const scriptTags = document.querySelectorAll('script');
        let videoFileUrl = null;
        let subtitleSources = null;
        
        for (const script of scriptTags) {
            if (script.textContent.includes('new Playerjs({')) {
                const fileMatch = script.textContent.match(/file:\s*['"](.*?)['"]/);
                if (fileMatch && fileMatch[1]) {
                    videoFileUrl = fileMatch[1];
                }
                
                const subtitlesMatch = script.textContent.match(/default_subtitles\s*=\s*['"](.*?)['"]/);
                if (subtitlesMatch && subtitlesMatch[1]) {
                    try {
                        subtitleSources = JSON.parse(subtitlesMatch[1]);
                    } catch (e) {
                        subtitleSources = subtitlesMatch[1].split(',').map(s => s.trim()).filter(Boolean);
                    }
                }
                
                if (videoFileUrl) {
                    break;
                }
            }
        }
        
        return { videoFileUrl, subtitleSources };
    } catch (error) {
        console.error('An error occurred during the process:', error);
        throw error;
    }
}


// 修改 scrapeProvider 函数
// 在 scrapeProvider 函数中添加调试代码
async function scrapeProvider_(domain, url, signal) {
    if (signal.aborted) throw new Error('Aborted');
    console.log(`\n[${domain}] Starting scrape for URL: ${url}`);

    let browserInstance = null;
    try {
        browserInstance = await browserPool.get();
        const browser = browserInstance.browser;
        
        // 创建初始页面
        const page = await browser.newPage();
        
        // 启用请求拦截
        await page.route('**/*', route => {
            console.log(`[${domain}] Request: ${route.request().url()}`);
            route.continue();
        });
        
        await page.goto(url, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 打印页面HTML内容用于调试
        const html = await page.content();
        console.log(`[${domain}] Page HTML:\n${html}`);
        
        // 检查是否有Turnstile
        const hasTurnstile = await page.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Has Turnstile: ${hasTurnstile}`);
        
        // 处理Turnstile
        if (hasTurnstile) {
            await handleSpecificTurnstile(page, domain);
        }

        // 获取第一个iframe的URL
        const firstIframeSrc = await extractFirstIframeSrc(page, domain);
        if (!firstIframeSrc) throw new Error('First iframe not found');
        
        // 创建新页面来加载iframe内容
        const iframePage = await browser.newPage();
        await iframePage.goto(firstIframeSrc, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 打印iframe页面的HTML内容
        const iframeHtml = await iframePage.content();
        console.log(`[${domain}] Iframe HTML:\n${iframeHtml}`);
        
        // 处理可能存在的第二个Turnstile
        const iframeHasTurnstile = await iframePage.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Iframe has Turnstile: ${iframeHasTurnstile}`);
        
        if (iframeHasTurnstile) {
            await handleSpecificTurnstile(iframePage, domain);
        }

        // 获取最终iframe的URL
        const finalIframeSrc = await extractFinalIframeSrc(iframePage, domain);
        if (!finalIframeSrc) throw new Error('Final iframe not found');
        
        // 获取视频和字幕
        const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(finalIframeSrc);
        if (!videoFileUrl) throw new Error("HLS URL not found");
        
        return { source_domain: domain, hls_url: videoFileUrl, subtitles: subtitleSources, error: null };

    } catch (error) {
        console.error(`[${domain}] Error in scrapeProvider: ${error.message}`);
        throw error;
    } finally {
        if (browserInstance) {
            console.log(`[${domain}] Releasing browser ${browserInstance.id} back to pool.`);
            await browserPool.release(browserInstance);
        }
    }
}

async function scrapeProvider__(domain, url, signal) {
    if (signal.aborted) throw new Error('Aborted');
    console.log(`\n[${domain}] Starting scrape for URL: ${url}`);

    let browserInstance = null;
    try {
        browserInstance = await browserPool.get();
        const browser = browserInstance.browser;
        
        // 创建初始页面
        const page = await browser.newPage();
        
        // 启用请求拦截
        await page.route('**/*', route => {
            const requestUrl = route.request().url();
            console.log(`[${domain}] Request: ${requestUrl}`);
            
            // 如果是 cloudnestra.com/rcp/ 的请求，记录响应但不拦截
            if (requestUrl.includes('cloudnestra.com/rcp/')) {
                route.continue().then(response => {
                    response.text().then(text => {
                        console.log(`[${domain}] Cloudnestra response:`, text);
                        // 将响应保存到页面属性中
                        page.cloudnestraResponse = text;
                    });
                });
            } else {
                route.continue();
            }
        });
        
        await page.goto(url, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 检查是否有Turnstile
        const hasTurnstile = await page.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Has Turnstile: ${hasTurnstile}`);
        
        // 处理Turnstile
        if (hasTurnstile) {
            await handleSpecificTurnstile(page, domain);
        }

        // 获取第一个iframe的URL
        const firstIframeSrc = await extractFirstIframeSrc(page, domain);
        if (!firstIframeSrc) throw new Error('First iframe not found');
        
        // 创建新页面来加载iframe内容
        const iframePage = await browser.newPage();
        await iframePage.goto(firstIframeSrc, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 处理可能存在的第二个Turnstile
        const iframeHasTurnstile = await iframePage.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Iframe has Turnstile: ${iframeHasTurnstile}`);
        
        if (iframeHasTurnstile) {
            await handleSpecificTurnstile(iframePage, domain);
        }

        // 获取最终iframe的URL
        const finalIframeSrc = await extractFinalIframeSrc(iframePage, domain);
        if (!finalIframeSrc) throw new Error('Final iframe not found');
        
        // 检查是否是 cloudnestra.com/rcp/ 的URL
        if (finalIframeSrc.includes('cloudnestra.com/rcp/')) {
            // 使用保存的响应
            const responseText = page.cloudnestraResponse;
            if (!responseText) throw new Error('No cloudnestra response found');
            
            // 解析响应
            try {
                const data = JSON.parse(responseText);
                if (data.file) {
                    console.log(`[${domain}] Found video URL in cloudnestra response:`, data.file);
                    return {
                        source_domain: domain,
                        hls_url: data.file,
                        subtitles: data.subtitles || [],
                        error: null
                    };
                }
                throw new Error("No video URL found in cloudnestra response");
            } catch (e) {
                throw new Error("Failed to parse cloudnestra response");
            }
        }
        
        // 如果不是 cloudnestra.com/rcp/ 的URL，使用原有的处理方式
        const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(finalIframeSrc);
        if (!videoFileUrl) throw new Error("HLS URL not found");
        
        return { source_domain: domain, hls_url: videoFileUrl, subtitles: subtitleSources, error: null };

    } catch (error) {
        console.error(`[${domain}] Error in scrapeProvider: ${error.message}`);
        throw error;
    } finally {
        if (browserInstance) {
            console.log(`[${domain}] Releasing browser ${browserInstance.id} back to pool.`);
            await browserPool.release(browserInstance);
        }
    }
}


async function scrapeProvider6(domain, url, signal) {
    if (signal.aborted) throw new Error('Aborted');
    console.log(`\n[${domain}] Starting scrape for URL: ${url}`);

    let browserInstance = null;
    try {
        browserInstance = await browserPool.get();
        const browser = browserInstance.browser;
        
        // 创建初始页面
        const page = await browser.newPage();
        let videoResult = null;
        
        // 启用请求拦截
        // await page.route('**/*', async (route) => {
        //     const requestUrl = route.request().url();
        //     console.log(`[${domain}] Request: ${requestUrl}`);
            
        //     // 如果是 cloudnestra.com/rcp/ 的请求，使用 getVideoAndSubtitles 解析
        //     if (requestUrl.includes('cloudnestra.com/rcp/')) {
        //         try {
        //             const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(requestUrl);
        //             if (!videoFileUrl) throw new Error("HLS URL not found");
                    
        //             videoResult = {
        //                 source_domain: domain,
        //                 hls_url: videoFileUrl,
        //                 subtitles: subtitleSources,
        //                 error: null
        //             };
        //             route.abort();
        //         } catch (error) {
        //             console.error(`[${domain}] Error processing cloudnestra request:`, error);
        //             route.continue();
        //         }
        //     } else {
        //         route.continue();
        //     }
        // });
      await page.route('**/*', async (route) => {
    const requestUrl = route.request().url();
    console.log(`[${domain}] Request: ${requestUrl}`);
    
    // 如果是 cloudnestra.com/rcp/ 请求，输出它的内容
    if (requestUrl.includes('cloudnestra.com/rcp/')) {
        console.log(`[${domain}] 🎯 检测到 cloudnestra.com/rcp/ 请求:`);
        console.log(`[${domain}] URL: ${requestUrl}`);
        
        try {
            // 获取请求的响应内容
            const response = await route.fetch();
            const content = await response.text();
            
            console.log(`[${domain}] 响应状态: ${response.status()}`);
            console.log(`[${domain}] 响应头:`, response.headers());
            console.log(`[${domain}] 响应内容长度: ${content.length}`);
            console.log(`[${domain}] 响应内容预览 (前500字符):`);
            console.log(content.substring(0, 500));
            
            // 如果内容看起来像JSON，尝试解析
            if (content.trim().startsWith('{') || content.trim().startsWith('[')) {
                try {
                    const jsonContent = JSON.parse(content);
                    console.log(`[${domain}] JSON内容:`, JSON.stringify(jsonContent, null, 2));
                } catch (e) {
                    console.log(`[${domain}] 不是有效的JSON格式`);
                }
            }
            
            // 继续正常的请求流程
            route.continue();
            
        } catch (error) {
            console.error(`[${domain}] 获取cloudnestra内容时出错:`, error);
            route.continue();
        }
    } else {
        route.continue();
    }
});
        
        await page.goto(url, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 如果已经从 cloudnestra 获取了视频链接，直接返回
        if (videoResult) {
            return videoResult;
        }
        
        // 检查是否有Turnstile
        const hasTurnstile = await page.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Has Turnstile: ${hasTurnstile}`);
        
        // 处理Turnstile
        if (hasTurnstile) {
            await handleSpecificTurnstile(page, domain);
        }

        // 获取第一个iframe的URL
        const firstIframeSrc = await extractFirstIframeSrc(page, domain);
        if (!firstIframeSrc) throw new Error('First iframe not found');
        
        // 创建新页面来加载iframe内容
        const iframePage = await browser.newPage();
        await iframePage.goto(firstIframeSrc, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 处理可能存在的第二个Turnstile
        const iframeHasTurnstile = await iframePage.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Iframe has Turnstile: ${iframeHasTurnstile}`);
        
        if (iframeHasTurnstile) {
            await handleSpecificTurnstile(iframePage, domain);
        }

        // 获取最终iframe的URL
        const finalIframeSrc = await extractFinalIframeSrc(iframePage, domain);
        if (!finalIframeSrc) throw new Error('Final iframe not found');
        
        // 使用 getVideoAndSubtitles 函数获取视频和字幕
        const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(finalIframeSrc);
        if (!videoFileUrl) throw new Error("HLS URL not found");
        
        return { source_domain: domain, hls_url: videoFileUrl, subtitles: subtitleSources, error: null };

    } catch (error) {
        console.error(`[${domain}] Error in scrapeProvider: ${error.message}`);
        throw error;
    } finally {
        if (browserInstance) {
            console.log(`[${domain}] Releasing browser ${browserInstance.id} back to pool.`);
            await browserPool.release(browserInstance);
        }
    }
}


async function scrapeProvider(domain, url, signal) {
    if (signal.aborted) throw new Error('Aborted');
    console.log(`\n[${domain}] Starting scrape for URL: ${url}`);

    let browserInstance = null;
    let cloudnestraData = null;
    
    try {
        browserInstance = await browserPool.get();
        const browser = browserInstance.browser;
        
        // 创建带有上下文的页面
        const context = await browser.newContext({
            userAgent: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
            extraHTTPHeaders: {
                'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
                'Accept-Language': 'en-US,en;q=0.5',
                'Accept-Encoding': 'gzip, deflate, br',
                'DNT': '1',
                'Connection': 'keep-alive',
                'Upgrade-Insecure-Requests': '1',
            },
            viewport: { width: 1920, height: 1080 }
        });
        
        // 移除自动化痕迹
        await context.addInitScript(() => {
            Object.defineProperty(navigator, 'webdriver', { get: () => undefined });
            Object.defineProperty(navigator, 'plugins', { get: () => [1, 2, 3, 4, 5] });
            Object.defineProperty(navigator, 'languages', { get: () => ['en-US', 'en'] });
        });
        
        const page = await context.newPage();
        
        // 启用请求拦截
        await page.route('**/*', async (route) => {
            const requestUrl = route.request().url();
            console.log(`[${domain}] Request: ${requestUrl}`);
            
            // 如果是 cloudnestra.com/rcp/ 请求，特殊处理
            if (requestUrl.includes('cloudnestra.com/rcp/')) {
                console.log(`[${domain}] 🎯 检测到 cloudnestra.com/rcp/ 请求: ${requestUrl}`);
                
                try {
                    // 添加随机延迟模拟人类行为
                    await new Promise(resolve => setTimeout(resolve, Math.random() * 1000 + 500));
                    
                    // 使用真实的请求头获取内容
                    const response = await route.fetch({
                        headers: {
                            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
                            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
                            'Accept-Language': 'en-US,en;q=0.9',
                            'Referer': domain,
                            'Cache-Control': 'no-cache'
                        }
                    });
                    
                    console.log(`[${domain}] Cloudnestra 响应状态: ${response.status()}`);
                    
                    if (response.status() === 200) {
                        const content = await response.text();
                        console.log(`[${domain}] ✅ 成功获取 cloudnestra 内容，长度: ${content.length}`);
                        
                        // 尝试从内容中提取 src
                        const srcMatch = content.match(/src\s*:\s*['"](.*?)['"]/);
                        if (srcMatch && srcMatch[1]) {
                            let finalUrl = srcMatch[1];
                            
                            // 构造完整URL
                            if (finalUrl.startsWith('/')) {
                                const baseUrl = requestUrl.split('/rcp')[0];
                                finalUrl = `${baseUrl}${finalUrl}`;
                            }
                            finalUrl = finalUrl.replace('http://', 'https://');
                            
                            console.log(`[${domain}] 从 cloudnestra 提取到的 URL: ${finalUrl}`);
                            
                            // 获取视频和字幕
                            const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(finalUrl);
                            if (videoFileUrl) {
                                cloudnestraData = {
                                    source_domain: domain,
                                    hls_url: videoFileUrl,
                                    subtitles: subtitleSources,
                                    error: null
                                };
                                console.log(`[${domain}] 🎉 成功从 cloudnestra 获取视频: ${videoFileUrl}`);
                            }
                        }
                        
                        // 如果内容看起来像JSON，尝试直接解析
                        if (content.trim().startsWith('{') || content.trim().startsWith('[')) {
                            try {
                                const jsonContent = JSON.parse(content);
                                if (jsonContent.file) {
                                    cloudnestraData = {
                                        source_domain: domain,
                                        hls_url: jsonContent.file,
                                        subtitles: jsonContent.subtitles || [],
                                        error: null
                                    };
                                    console.log(`[${domain}] 🎉 从 JSON 响应获取视频: ${jsonContent.file}`);
                                }
                            } catch (e) {
                                console.log(`[${domain}] 内容不是有效的JSON格式`);
                            }
                        }
                        
                        // 继续正常的请求流程
                        route.continue();
                    } else if (response.status() === 522) {
                        console.log(`[${domain}] ❌ Cloudflare 连接超时 (522)`);
                        route.continue();
                    } else if (response.status() === 403) {
                        console.log(`[${domain}] ❌ 被 Cloudflare 拒绝访问 (403)`);
                        route.continue();
                    } else {
                        console.log(`[${domain}] ⚠️ 异常响应状态: ${response.status()}`);
                        route.continue();
                    }
                    
                } catch (error) {
                    console.error(`[${domain}] ❌ 处理 cloudnestra 请求失败:`, error.message);
                    route.continue();
                }
            } else {
                route.continue();
            }
        });
        
        await page.goto(url, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 如果已经从 cloudnestra 获取了视频链接，直接返回
        if (cloudnestraData) {
            console.log(`[${domain}] 🎯 使用 cloudnestra 数据`);
            return cloudnestraData;
        }
        
        // 继续原有的处理流程...
        // 检查是否有Turnstile
        const hasTurnstile = await page.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Has Turnstile: ${hasTurnstile}`);
        
        // 处理Turnstile
        if (hasTurnstile) {
            await handleSpecificTurnstile(page, domain);
        }

        // 获取第一个iframe的URL
        const firstIframeSrc = await extractFirstIframeSrc(page, domain);
        if (!firstIframeSrc) throw new Error('First iframe not found');
        
        // 创建新页面来加载iframe内容
        const iframePage = await context.newPage();
        await iframePage.goto(firstIframeSrc, { 
            waitUntil: 'networkidle',
            timeout: 60000 
        });
        
        // 处理可能存在的第二个Turnstile
        const iframeHasTurnstile = await iframePage.evaluate(() => {
            return document.querySelector('.cf-turnstile') !== null;
        });
        console.log(`[${domain}] Iframe has Turnstile: ${iframeHasTurnstile}`);
        
        if (iframeHasTurnstile) {
            await handleSpecificTurnstile(iframePage, domain);
        }

        // 获取最终iframe的URL
        const finalIframeSrc = await extractFinalIframeSrc(iframePage, domain);
        if (!finalIframeSrc) throw new Error('Final iframe not found');
        
        // 使用 getVideoAndSubtitles 函数获取视频和字幕
        const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(finalIframeSrc);
        if (!videoFileUrl) throw new Error("HLS URL not found");
        
        return { source_domain: domain, hls_url: videoFileUrl, subtitles: subtitleSources, error: null };

    } catch (error) {
        console.error(`[${domain}] Error in scrapeProvider: ${error.message}`);
        throw error;
    } finally {
        if (browserInstance) {
            console.log(`[${domain}] Releasing browser ${browserInstance.id} back to pool.`);
            // 关闭上下文
            if (typeof context !== 'undefined') {
                await context.close();
            }
            await browserPool.release(browserInstance);
        }
    }
}
async function scrapeProvider4(domain, url, signal) {
    if (signal.aborted) throw new Error('Aborted');
    console.log(`\n[${domain}] Starting scrape for URL: ${url}`);
    let browserInstance = null;
    try {
        browserInstance = await browserPool.get();
        const browser = browserInstance.browser;
        
        // 创建初始页面
        const page = await browser.newPage();
        let videoResult = null;
        
        // 启用请求拦截
        await page.route('**/*', async (route) => {
            const requestUrl = route.request().url();
            console.log(`[${domain}] Request: ${requestUrl}`);
            
            // 如果是 cloudnestra.com/rcp/ 的请求，使用 getVideoAndSubtitles 解析
            if (requestUrl.includes('cloudnestra.com/rcp/')) {
                try {
                    const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(requestUrl);
                    if (!videoFileUrl) throw new Error("HLS URL not found");
                    
                    videoResult = {
                        source_domain: domain,
                        hls_url: videoFileUrl,
                        subtitles: subtitleSources,
                        error: null
                    };
                    route.abort();
                    // 中止所有后续请求
                    await page.unroute('**/*');
                } catch (error) {
                    console.error(`[${domain}] Error processing cloudnestra request:`, error);
                    route.abort();
                    // 中止所有后续请求
                    await page.unroute('**/*');
                }
            } else {
                route.abort(); // 中止所有非 cloudnestra.com/rcp/ 的请求
            }
        });
        
        // 等待 videoResult 被设置
        await page.waitForFunction(
            () => videoResult !== null,
            { timeout: 30000 }
        ).catch(() => {
            throw new Error('Timeout waiting for cloudnestra.com/rcp/ request');
        });
        return videoResult;
    } catch (error) {
        console.error(`[${domain}] Error in scrapeProvider: ${error.message}`);
        throw error;
    } finally {
        if (browserInstance) {
            console.log(`[${domain}] Releasing browser ${browserInstance.id} back to pool.`);
            await browserPool.release(browserInstance);
        }
    }
}


async function scrapeProvider5(domain, url, signal) {
    if (signal.aborted) throw new Error('Aborted');
    console.log(`\n[${domain}] Starting scrape for URL: ${url}`);

    let browserInstance = null;
    try {
        browserInstance = await browserPool.get();
        const browser = browserInstance.browser;
        
        // 创建初始页面
        const page = await browser.newPage();
        let videoResult = null;
        
        // 启用请求拦截
        await page.route('**/*', async (route) => {
            const requestUrl = route.request().url();
            console.log(`[${domain}] Request: ${requestUrl}`);
            
            // 如果是 cloudnestra.com/rcp/ 的请求
            if (requestUrl.includes('cloudnestra.com/rcp/')) {
                try {
                    // 获取响应
                    const response = await route.fetch();
                    const html = await response.text();
                    
                    // 使用正则表达式提取 src 值
                    const proMatch = html.match(/src\s*:\s*'([^']+)'/);
                    let finalUrl = proMatch?.[1];
                    
                    if (!finalUrl) {
                        throw new Error('Could not find src in response');
                    }
                    
                    // 确保使用 HTTPS 协议
                    const baseUrl = requestUrl.split('/rcp')[0]; // 获取基础 URL
                    finalUrl = `${baseUrl}${finalUrl}`; // 拼接完整 URL
                    finalUrl = finalUrl.replace('http://', 'https://'); // 确保使用 HTTPS
                    console.log('Final URL:', finalUrl);
                    
                    // 调用 getVideoAndSubtitles
                    const { videoFileUrl, subtitleSources } = await getVideoAndSubtitles(finalUrl);
                    if (!videoFileUrl) throw new Error("HLS URL not found");
                    
                    videoResult = {
                        source_domain: domain,
                        hls_url: videoFileUrl,
                        subtitles: subtitleSources,
                        error: null
                    };
                    
                    // 中止所有后续请求
                    await page.unroute('**/*');
                    route.abort();
                } catch (error) {
                    console.error(`[${domain}] Error processing cloudnestra request:`, error);
                    route.abort();
                    await page.unroute('**/*');
                }
            } else {
                route.abort();
            }
        });
        
        // 等待 videoResult 被设置
        await page.waitForFunction(
            () => videoResult !== null,
            { timeout: 30000 }
        ).catch(() => {
            throw new Error('Timeout waiting for cloudnestra.com/rcp/ request');
        });

        return videoResult;

    } catch (error) {
        console.error(`[${domain}] Error in scrapeProvider: ${error.message}`);
        throw error;
    } finally {
        if (browserInstance) {
            console.log(`[${domain}] Releasing browser ${browserInstance.id} back to pool.`);
            await browserPool.release(browserInstance);
        }
    }
}


// 修改 handleSpecificTurnstile 函数
async function handleSpecificTurnstile(page, domain) {
    try {
        console.log(`[${domain}] Checking for Turnstile...`);
        
        // 检查是否存在Turnstile
        const turnstileExists = await page.waitForSelector('.cf-turnstile', { 
            timeout: 10000,
            state: 'attached' 
        }).then(() => true).catch(() => false);

        if (!turnstileExists) {
            console.log(`[${domain}] No Turnstile detected`);
            return;
        }

        console.log(`[${domain}] Turnstile detected - bypassing...`);
        
        // 等待Turnstile加载
        await page.waitForSelector('.cf-turnstile', { 
            timeout: 10000,
            state: 'visible' 
        });

        // 直接触发回调
        await page.evaluate(() => {
            const mockToken = 'mock-token-' + Math.random().toString(36).substring(2);
            if (typeof window.cftCallback === 'function') {
                window.cftCallback(mockToken);
            }
            
            // 提交表单
            const form = document.createElement('form');
            form.method = 'POST';
            form.action = '/rcp_verify';
            const input = document.createElement('input');
            input.type = 'hidden';
            input.name = 'token';
            input.value = mockToken;
            form.appendChild(input);
            document.body.appendChild(form);
            form.submit();
        });

        // 等待页面响应
        await page.waitForNavigation({ 
            waitUntil: 'networkidle',  // 使用Playwright支持的等待策略
            timeout: 30000 
        });
        console.log(`[${domain}] Turnstile bypass completed`);

    } catch (error) {
        console.warn(`[${domain}] Turnstile bypass warning: ${error.message}`);
    }
}


// 修改 extractFinalIframeSrc 函数
async function extractFinalIframeSrc(page, domain) {
    try {
        // 等待动态内容加载
        await page.waitForFunction(() => {
            return document.querySelectorAll('script, iframe').length > 0;
        }, { timeout: 15000 });

        return await page.evaluate(() => {
            // Method 1: 检查直接iframe
            const iframe = document.querySelector('iframe:not([style*="display:none"])');
            if (iframe?.src) return iframe.src;

            // Method 2: 检查脚本中的iframe URL
            const scripts = Array.from(document.querySelectorAll('script'));
            for (const script of scripts) {
                if (!script.textContent) continue;
                
                // 查找loadIframe模式
                if (script.textContent.includes('loadIframe')) {
                    const srcMatch = script.textContent.match(/src:\s*['"](.*?)['"]/);
                    if (srcMatch) return new URL(srcMatch[1], window.location.href).href;
                }
                
                // 查找直接URL模式
                const urlMatch = script.textContent.match(/(https?:)?\/\/[^'"]+embed[^'"]*/);
                if (urlMatch) {
                    return urlMatch[0].startsWith('http') ? urlMatch[0] : `https:${urlMatch[0]}`;
                }
            }
            
            return null;
        });
    } catch (error) {
        console.error(`[${domain}] Error finding final iframe: ${error.message}`);
        return null;
    }
}

app.get("/extract", async (req, res) => {
    const type = req.query.type || "movie";
    const tmdb_id = req.query.tmdb_id;
    const season = req.query.season ? parseInt(req.query.season) : undefined;
    const episode = req.query.episode ? parseInt(req.query.episode) : undefined;

    if (!tmdb_id) { return res.status(400).json({ success: false, error: "tmdb_id is required" }); }
    if (type === "tv" && (season == null || episode == null)) { return res.status(400).json({ success: false, error: "season and episode are required" }); }

    const cacheKey = JSON.stringify(req.query);
    const cached = cache.get(cacheKey);
    if (cached) { 
        console.log("Serving from cache");
        return res.json(cached); 
    }

    const urls = PROVIDERS.reduce((acc, domain) => {
        acc[domain] = type === "tv" ? `${domain}/embed/tv?tmdb=${tmdb_id}&season=${season}&episode=${episode}` : `${domain}/embed/movie/${tmdb_id}`;
        return acc;
    }, {});

    const controller = new AbortController();
    const signal = controller.signal;

    try {
        const promises = Object.entries(urls).map(([domain, url]) =>
            limit(() => scrapeProvider(domain, url, signal))
        );
        const firstSuccessfulResult = await Promise.any(promises);
        controller.abort();
        const response = { success: true, result: firstSuccessfulResult };
        cache.set(cacheKey, response);
        res.json(response);
    } catch (err) {
        if (err instanceof AggregateError) {
            console.error("All providers failed to find a link.");
            res.status(404).json({ success: false, error: "Could not find the video from any provider." });
        } else {
            console.error("An unexpected server error occurred:", err);
            res.status(500).json({ success: false, error: "Unexpected server error" });
        }
    }
});

(async () => {
    try {
        browserPool = new BrowserPool({
            chromium: chromium,
            minSize: 1,
            maxSize: 5,
            maxUsage: 100,
            launchOptions: {
                headless: true,
                args: [
                    '--no-sandbox',
                    '--disable-setuid-sandbox',
                    '--disable-dev-shm-usage',
                    '--disable-gpu',
                    '--disable-extensions',
                    '--disable-notifications',
                    '--disable-infobars',
                    '--disable-web-security',
                    '--disable-features=IsolateOrigins,site-per-process'
                ]
            }
        });
        await browserPool.initialize();
        console.log("Browser pool initialized successfully.");
        app.listen(PORT, () => console.log(`🚀 Universal Video Extractor running at http://localhost:${PORT}`));
    } catch (error) {
        console.error("Failed to initialize browser pool:", error);
        process.exit(1);
    }
})();

process.on("SIGINT", async () => {
    console.log("Shutting down gracefully...");
    if (browserPool) await browserPool.shutdown();
    process.exit(0);
});

process.on("SIGTERM", async () => {
    console.log("Shutting down gracefully...");
    if (browserPool) await browserPool.shutdown();
    process.exit(0);
});