#!/usr/bin/env node
/**
 * 纯监听模式: 只打开真实验证码页面, **不派发任何鼠标事件**。
 * 由人工手动点选, 脚本在后台记录官方 SDK 自己发出的 verify 请求与响应,
 * 用来判定「人手动过验证码是否也会被 errorCode=12 拒绝」。
 *
 * 用法: node manual_captcha.js <originUrl> <aid> [--proxy=http://ip:port] [--minutes=20]
 */
const { spawn } = require('child_process');
const fs = require('fs');
const os = require('os');
const path = require('path');

const CHROME = process.env.REA_BROWSER_EXECUTABLE ||
    '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome';
const ORIGIN = process.argv[2] || 'https://1ms.run/';
const AID = process.argv[3] || '195672344';
const PROXY_ARG = process.argv.find(a => a.startsWith('--proxy='));
const PROXY = PROXY_ARG ? PROXY_ARG.slice(8) : null;
const MIN_ARG = process.argv.find(a => a.startsWith('--minutes='));
const MINUTES = MIN_ARG ? parseInt(MIN_ARG.slice(10), 10) : 20;
const MONITOR_ONLY = process.argv.includes('--monitor-only');
const OUT = '/tmp/1ms';
fs.mkdirSync(OUT, { recursive: true });
const LOG = fs.createWriteStream(path.join(OUT, 'manual.log'), { flags: 'a' });
const say = m => { const line = `[${new Date().toISOString().slice(11, 19)}] ${m}`;
                   process.stderr.write(line + '\n'); LOG.write(line + '\n'); };
const sleep = ms => new Promise(r => setTimeout(r, ms));

async function launchChrome(profile) {
    const args = ['--remote-debugging-port=0', '--no-first-run', '--no-default-browser-check',
        `--user-data-dir=${profile}`, '--window-size=1100,900', '--window-position=80,40'];
    if (PROXY) args.push(`--proxy-server=${PROXY}`);
    args.push('about:blank');
    const proc = spawn(CHROME, args, { stdio: ['ignore', 'pipe', 'pipe'] });
    const portFile = path.join(profile, 'DevToolsActivePort');
    for (let i = 0; i < 150; i++) {
        if (fs.existsSync(portFile)) {
            const p = parseInt(fs.readFileSync(portFile, 'utf8').split('\n')[0], 10);
            if (p) return { proc, port: p, profile };
        }
        await sleep(100);
    }
    proc.kill('SIGKILL');
    throw new Error('Chrome 未就绪');
}

class Cdp {
    constructor(ws) { this.ws = ws; this.id = 0; this.waits = new Map(); this.handlers = []; }
    static async connect(url) {
        const ws = new WebSocket(url);
        await new Promise((res, rej) => { ws.onopen = res; ws.onerror = rej; });
        const c = new Cdp(ws);
        ws.onmessage = ev => {
            const m = JSON.parse(ev.data);
            if (m.id && c.waits.has(m.id)) {
                const { res, rej } = c.waits.get(m.id);
                c.waits.delete(m.id);
                m.error ? rej(new Error(JSON.stringify(m.error))) : res(m.result);
            } else if (m.method) c.handlers.forEach(h => h(m));
        };
        return c;
    }
    send(method, params = {}, sessionId) {
        const id = ++this.id;
        return new Promise((res, rej) => {
            this.waits.set(id, { res, rej });
            this.ws.send(JSON.stringify({ id, method, params, sessionId }));
        });
    }
    async eval(expr, sessionId) {
        const r = await this.send('Runtime.evaluate',
            { expression: expr, awaitPromise: true, returnByValue: true }, sessionId);
        return r.exceptionDetails ? null : r.result.value;
    }
}

async function main() {
    const profile = fs.mkdtempSync(path.join(os.tmpdir(), 'manual-cap-'));
    const { proc, port } = await launchChrome(profile);
    try {
        const ver = await (await fetch(`http://127.0.0.1:${port}/json/version`)).json();
        const cdp = await Cdp.connect(ver.webSocketDebuggerUrl);
        const { targetId } = await cdp.send('Target.createTarget', { url: ORIGIN });
        const { sessionId } = await cdp.send('Target.attachToTarget', { targetId, flatten: true });
        await cdp.send('Page.enable', {}, sessionId);
        await cdp.send('Runtime.enable', {}, sessionId);
        await cdp.send('Network.enable', {}, sessionId);
        await sleep(3000);

        const pending = new Set();
        let seq = 0;
        cdp.handlers.push(m => {
            if (m.method === 'Network.requestWillBeSent' &&
                /cap_union_new_verify/.test(m.params.request.url)) {
                const n = ++seq;
                pending.add(m.params.requestId);
                fs.writeFileSync(path.join(OUT, `manual_verify_req_${n}.txt`),
                    m.params.request.postData || '');
                say(`官方 verify #${n} 已发出 (body ${(m.params.request.postData || '').length} 字节)`);
            }
            if (m.method === 'Network.loadingFinished' && pending.has(m.params.requestId)) {
                const id = m.params.requestId;
                pending.delete(id);
                (async () => {
                    try {
                        const rb = await cdp.send('Network.getResponseBody', { requestId: id }, sessionId);
                        const txt = rb.base64Encoded
                            ? Buffer.from(rb.body, 'base64').toString('utf8') : rb.body;
                        let code = '?';
                        try { code = JSON.parse(txt).errorCode; } catch (_) {}
                        const rec = { errorCode: code, response: txt, at: new Date().toISOString() };
                        fs.writeFileSync(path.join(OUT, 'manual_result.json'),
                            JSON.stringify(rec, null, 2));
                        say(`★★★★ verify 响应 errorCode=${code}   已写入 ${OUT}/manual_result.json`);
                    } catch (e) { say('取响应体失败: ' + e.message); }
                })();
            }
        });

        if (MONITOR_ONLY) {
            say('====== [仅监听] 不做任何注入, 请在窗口里登录并走真实签到流程 ======');
            say('====== 真实验证码出现后请手动完成, 我会记录 verify 结果 ======');
            const until2 = Date.now() + MINUTES * 60000;
            while (Date.now() < until2) {
                await sleep(3000);
                const cb = await cdp.eval('window.__capcb || ""', sessionId).catch(() => '');
                if (cb) say('SDK 回调: ' + cb);
            }
            return;
        }
        await cdp.eval(`(async () => {
            window.__capcb = null;
            await new Promise((res, rej) => {
                const s = document.createElement('script');
                s.src = 'https://turing.captcha.qcloud.com/TJCaptcha.js';
                s.onload = res; s.onerror = () => rej(new Error('sdk'));
                document.head.appendChild(s);
            });
            new TencentCaptcha(${JSON.stringify(AID)}, r => {
                window.__capcb = JSON.stringify(r);
                document.title = 'CAPCB:' + JSON.stringify(r).slice(0, 80);
            }).show();
            return 'ok';
        })()`, sessionId);

        say('====== 页面已就绪, 验证码已弹出 ======');
        say('====== 请手动点选汉字 -> 点「确定」, 我不做任何点击 ======');
        say(`====== 代理: ${PROXY || '直连'}   监听 ${MINUTES} 分钟 ======`);

        const until = Date.now() + MINUTES * 60000;
        let lastCb = '';
        while (Date.now() < until) {
            await sleep(3000);
            const cb = await cdp.eval('window.__capcb || ""', sessionId);
            if (cb && cb !== lastCb) {
                lastCb = cb;
                say('★★★ SDK 回调 (成功才会触发): ' + cb);
                try {
                    fs.writeFileSync(path.join(OUT, 'manual_result.json'),
                        JSON.stringify({ callback: JSON.parse(cb) }, null, 2));
                } catch (_) {}
            }
        }
        say('监听结束, 浏览器保持打开');
    } catch (e) {
        say('异常: ' + e.message);
    }
}

main().catch(e => { console.error('ERR', e.message); process.exit(1); });