#!/usr/bin/env node
/**
 * cdp_click.js —— 用 CDP 在页面里派发**真实(trusted)鼠标事件** (点击 / 拖动)。
 * 用于驱动真实浏览器里的验证码 widget (合成 MouseEvent 会被 isTrusted 检测)。
 *
 * 用法:
 *   # 依次点击若干点 (页面视口坐标)
 *   node tools/cdp_click.js --match 1ms.run --clicks "520,700;300,600"
 *   # 拖动: 从 (x,y) 水平/任意拖到 (x2,y2), 分 steps 步 (带中间移动)
 *   node tools/cdp_click.js --match 1ms.run --drag "200,700,600,700,30"
 *
 * 注意: 坐标是**顶层页面视口**坐标 (iframe 内的元素要先换算成页面坐标)。
 */
function arg(name, def) {
    const i = process.argv.indexOf('--' + name);
    if (i < 0) return def;
    const v = process.argv[i + 1];
    return (v === undefined || v.startsWith('--')) ? true : v;
}
class Cdp {
    constructor(ws) { this.ws = ws; this.id = 0; this.waits = new Map(); }
    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);
            }
        };
        return c;
    }
    send(method, params = {}) {
        const id = ++this.id;
        this.ws.send(JSON.stringify({ id, method, params }));
        return new Promise((res, rej) => this.waits.set(id, { res, rej }));
    }
    close() { try { this.ws.close(); } catch (e) {} }
}
const sleep = ms => new Promise(r => setTimeout(r, ms));

(async () => {
    const port = parseInt(arg('port', '9222'), 10);
    const match = arg('match', null);
    const targets = (await (await fetch(`http://127.0.0.1:${port}/json/list`)).json())
        .filter(t => t.type === 'page');
    const target = match ? targets.find(t => (t.url || '').includes(match)) : targets[0];
    if (!target) throw new Error('没有可用标签页');
    const cdp = await Cdp.connect(target.webSocketDebuggerUrl);

    const click = async (x, y) => {
        const base = { x: Math.round(x), y: Math.round(y), button: 'left', clickCount: 1,
                       buttons: 1, pointerType: 'mouse' };
        await cdp.send('Input.dispatchMouseEvent', { type: 'mouseMoved', ...base, buttons: 0 });
        await sleep(40);
        await cdp.send('Input.dispatchMouseEvent', { type: 'mousePressed', ...base });
        await sleep(60);
        await cdp.send('Input.dispatchMouseEvent', { type: 'mouseReleased', ...base });
        await sleep(260);
    };

    const clicks = arg('clicks', null);
    if (clicks && clicks !== true) {
        for (const p of String(clicks).split(';')) {
            const [x, y] = p.split(',').map(Number);
            if (Number.isFinite(x) && Number.isFinite(y)) await click(x, y);
        }
        console.log(JSON.stringify({ clicked: String(clicks).split(';').length, target: target.url }));
    }

    const drag = arg('drag', null);
    if (drag && drag !== true) {
        const [x1, y1, x2, y2, steps] = String(drag).split(',').map(Number);
        const n = steps || 30;
        const base = { button: 'left', buttons: 1, pointerType: 'mouse', clickCount: 1 };
        await cdp.send('Input.dispatchMouseEvent', { type: 'mouseMoved', x: x1, y: y1, buttons: 0 });
        await sleep(80);
        await cdp.send('Input.dispatchMouseEvent', { type: 'mousePressed', x: x1, y: y1, ...base });
        for (let i = 1; i <= n; i++) {
            const t = i / n;
            const ease = t < 0.5 ? 2 * t * t : 1 - Math.pow(-2 * t + 2, 2) / 2;
            const x = x1 + (x2 - x1) * ease + (Math.random() - 0.5) * 1.5;
            const y = y1 + (y2 - y1) * ease + (Math.random() - 0.5) * 1.5;
            await cdp.send('Input.dispatchMouseEvent', { type: 'mouseMoved', x: Math.round(x), y: Math.round(y), ...base });
            await sleep(12 + Math.random() * 10);
        }
        await cdp.send('Input.dispatchMouseEvent', { type: 'mouseReleased', x: x2, y: y2, ...base });
        console.log(JSON.stringify({ dragged: [x1, y1, x2, y2], steps: n, target: target.url }));
    }
    cdp.close();
})().catch(e => { console.error('CDP_ERROR: ' + e.message); process.exit(1); });