/**
 * Copyright (c) Microsoft Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { playwrightTest as it, expect } from '../config/browserTest';
import net from 'net';
import type { SocksSocketClosedPayload, SocksSocketDataPayload, SocksSocketRequestedPayload } from '../../packages/playwright-core/src/common/socksProxy';
import { SocksProxy } from '../../packages/playwright-core/lib/common/socksProxy';
it.skip(({ mode }) => mode.startsWith('service'));
it('should throw for bad server value', async ({ browserType }) => {
  const error = await browserType.launch({
    // @ts-expect-error server must be a string
    proxy: { server: 123 }
  }).catch(e => e);
  expect(error.message).toContain('proxy.server: expected string, got number');
});
it('should use proxy @smoke', async ({ browserType, server, mode }) => {
  server.setRoute('/target.html', async (req, res) => {
    res.end('
Served by the proxy');
  });
  const browser = await browserType.launch({
    proxy: { server: `localhost:${server.PORT}` }
  });
  const page = await browser.newPage();
  await page.goto('http://non-existent.com/target.html');
  expect(await page.title()).toBe('Served by the proxy');
  await browser.close();
});
it('should use proxy for second page', async ({ browserType, server }) => {
  server.setRoute('/target.html', async (req, res) => {
    res.end('Served by the proxy');
  });
  const browser = await browserType.launch({
    proxy: { server: `localhost:${server.PORT}` }
  });
  const page = await browser.newPage();
  await page.goto('http://non-existent.com/target.html');
  expect(await page.title()).toBe('Served by the proxy');
  const page2 = await browser.newPage();
  await page2.goto('http://non-existent.com/target.html');
  expect(await page2.title()).toBe('Served by the proxy');
  await browser.close();
});
it('should work with IP:PORT notion', async ({ browserType, server }) => {
  server.setRoute('/target.html', async (req, res) => {
    res.end('Served by the proxy');
  });
  const browser = await browserType.launch({
    proxy: { server: `127.0.0.1:${server.PORT}` }
  });
  const page = await browser.newPage();
  await page.goto('http://non-existent.com/target.html');
  expect(await page.title()).toBe('Served by the proxy');
  await browser.close();
});
it.describe('should proxy local network requests', () => {
  for (const additionalBypass of [false, true]) {
    it.describe(additionalBypass ? 'with other bypasses' : 'by default', () => {
      for (const params of [
        {
          target: 'localhost',
          description: 'localhost',
        },
        {
          target: '127.0.0.1',
          description: 'loopback address',
        },
        {
          target: '169.254.3.4',
          description: 'link-local'
        }
      ]) {
        it(`${params.description}`, async ({ platform, browserName, browserType, server, proxyServer }) => {
          it.skip(browserName === 'webkit' && platform === 'darwin' && ['localhost', '127.0.0.1'].includes(params.target) && additionalBypass, 'Mac webkit does not proxy localhost when bypass rules are set.');
          const path = `/target-${additionalBypass}-${params.target}.html`;
          server.setRoute(path, async (req, res) => {
            res.end('Served by the proxy');
          });
          const url = `http://${params.target}:55555${path}`;
          proxyServer.forwardTo(server.PORT);
          const browser = await browserType.launch({
            proxy: { server: `localhost:${proxyServer.PORT}`, bypass: additionalBypass ? '1.non.existent.domain.for.the.test' : undefined }
          });
          const page = await browser.newPage();
          await page.goto(url);
          expect(proxyServer.requestUrls).toContain(url);
          expect(await page.title()).toBe('Served by the proxy');
          await page.goto('http://1.non.existent.domain.for.the.test/foo.html').catch(() => {});
          if (additionalBypass)
            expect(proxyServer.requestUrls).not.toContain('http://1.non.existent.domain.for.the.test/foo.html');
          else
            expect(proxyServer.requestUrls).toContain('http://1.non.existent.domain.for.the.test/foo.html');
          await browser.close();
        });
      }
    });
  }
});
it('should authenticate', async ({ browserType, server }) => {
  server.setRoute('/target.html', async (req, res) => {
    const auth = req.headers['proxy-authorization'];
    if (!auth) {
      res.writeHead(407, 'Proxy Authentication Required', {
        'Proxy-Authenticate': 'Basic realm="Access to internal site"'
      });
      res.end();
    } else {
      res.end(`${auth}`);
    }
  });
  const browser = await browserType.launch({
    proxy: { server: `localhost:${server.PORT}`, username: 'user', password: 'secret' }
  });
  const page = await browser.newPage();
  await page.goto('http://non-existent.com/target.html');
  expect(await page.title()).toBe('Basic ' + Buffer.from('user:secret').toString('base64'));
  await browser.close();
});
it('should work with authenticate followed by redirect', async ({ browserName, browserType, server }) => {
  it.fixme(browserName === 'firefox', 'https://github.com/microsoft/playwright/issues/10095');
  function hasAuth(req, res) {
    const auth = req.headers['proxy-authorization'];
    if (!auth) {
      res.writeHead(407, 'Proxy Authentication Required', {
        'Proxy-Authenticate': 'Basic realm="Access to internal site"'
      });
      res.end();
      return false;
    }
    return true;
  }
  server.setRoute('/page1.html', async (req, res) => {
    if (!hasAuth(req, res))
      return;
    res.writeHead(302, { location: '/page2.html' });
    res.end();
  });
  server.setRoute('/page2.html', async (req, res) => {
    if (!hasAuth(req, res))
      return;
    res.end('Served by the proxy');
  });
  const browser = await browserType.launch({
    proxy: { server: `localhost:${server.PORT}`, username: 'user', password: 'secret' }
  });
  const page = await browser.newPage();
  await page.goto('http://non-existent.com/page1.html');
  expect(await page.title()).toBe('Served by the proxy');
  await browser.close();
});
it('should exclude patterns', async ({ browserType, server, browserName, headless }) => {
  server.setRoute('/target.html', async (req, res) => {
    res.end('Served by the proxy');
  });
  // FYI: using long and weird domain names to avoid ATT DNS hijacking
  // that resolves everything to some weird search results page.
  //
  // @see https://gist.github.com/CollinChaffin/24f6c9652efb3d6d5ef2f5502720ef00
  const browser = await browserType.launch({
    proxy: { server: `localhost:${server.PORT}`, bypass: '1.non.existent.domain.for.the.test, 2.non.existent.domain.for.the.test, .another.test' }
  });
  {
    const page = await browser.newPage();
    await page.goto('http://0.non.existent.domain.for.the.test/target.html');
    expect(await page.title()).toBe('Served by the proxy');
    await page.close();
  }
  {
    const page = await browser.newPage();
    const error = await page.goto('http://1.non.existent.domain.for.the.test/target.html').catch(e => e);
    expect(error.message).toBeTruthy();
    await page.close();
  }
  {
    const page = await browser.newPage();
    const error = await page.goto('http://2.non.existent.domain.for.the.test/target.html').catch(e => e);
    expect(error.message).toBeTruthy();
    await page.close();
  }
  {
    const page = await browser.newPage();
    const error = await page.goto('http://foo.is.the.another.test/target.html').catch(e => e);
    expect(error.message).toBeTruthy();
    await page.close();
  }
  {
    const page = await browser.newPage();
    await page.goto('http://3.non.existent.domain.for.the.test/target.html');
    expect(await page.title()).toBe('Served by the proxy');
    await page.close();
  }
  await browser.close();
});
it('should use socks proxy', async ({ browserType, socksPort }) => {
  const browser = await browserType.launch({
    proxy: { server: `socks5://localhost:${socksPort}` }
  });
  const page = await browser.newPage();
  await page.goto('http://non-existent.com');
  expect(await page.title()).toBe('Served by the SOCKS proxy');
  await browser.close();
});
it('should use socks proxy in second page', async ({ browserType, socksPort }) => {
  const browser = await browserType.launch({
    proxy: { server: `socks5://localhost:${socksPort}` }
  });
  const page = await browser.newPage();
  await page.goto('http://non-existent.com');
  expect(await page.title()).toBe('Served by the SOCKS proxy');
  const page2 = await browser.newPage();
  await page2.goto('http://non-existent.com');
  expect(await page2.title()).toBe('Served by the SOCKS proxy');
  await browser.close();
});
it('does launch without a port', async ({ browserType }) => {
  const browser = await browserType.launch({
    proxy: { server: 'http://localhost' }
  });
  await browser.close();
});
it('should use proxy with emulated user agent', async ({ browserType }) => {
  it.fixme(true, 'Non-emulated user agent is used in proxy CONNECT');
  let requestText = '';
  // This is our proxy server
  const server = net.createServer(socket => {
    socket.on('data', data => {
      requestText = data.toString();
      socket.end();
    });
  });
  await new Promise(f => server.listen(0, f));
  const browser = await browserType.launch({
    proxy: { server: `http://127.0.0.1:${(server.address() as any).port}` }
  });
  const page = await browser.newPage({
    userAgent: 'MyUserAgent'
  });
  // HTTPS over HTTP proxy will start with CONNECT request.
  await page.goto('https://bing.com/').catch(() => {});
  await browser.close();
  server.close();
  // This connect request should have emulated user agent.
  expect(requestText).toContain('MyUserAgent');
});
async function setupSocksForwardingServer(port: number, forwardPort: number) {
  const connections = new Map();
  const socksProxy = new SocksProxy();
  socksProxy.setPattern('*');
  socksProxy.addListener(SocksProxy.Events.SocksRequested, async (payload: SocksSocketRequestedPayload) => {
    if (!['127.0.0.1', 'fake-localhost-127-0-0-1.nip.io'].includes(payload.host) || payload.port !== 1337) {
      socksProxy.sendSocketError({ uid: payload.uid, error: 'ECONNREFUSED' });
      return;
    }
    const target = new net.Socket();
    target.on('error', error => socksProxy.sendSocketError({ uid: payload.uid, error: error.toString() }));
    target.on('end', () => socksProxy.sendSocketEnd({ uid: payload.uid }));
    target.on('data', data => socksProxy.sendSocketData({ uid: payload.uid, data }));
    target.setKeepAlive(false);
    target.connect(forwardPort, '127.0.0.1');
    target.on('connect', () => {
      connections.set(payload.uid, target);
      socksProxy.socketConnected({ uid: payload.uid, host: target.localAddress, port: target.localPort });
    });
  });
  socksProxy.addListener(SocksProxy.Events.SocksData, async (payload: SocksSocketDataPayload) => {
    connections.get(payload.uid)?.write(payload.data);
  });
  socksProxy.addListener(SocksProxy.Events.SocksClosed, (payload: SocksSocketClosedPayload) => {
    connections.get(payload.uid)?.destroy();
    connections.delete(payload.uid);
  });
  await socksProxy.listen(port, 'localhost');
  return {
    closeProxyServer: () => socksProxy.close(),
    proxyServerAddr: `socks5://localhost:${port}`,
  };
}
it('should use SOCKS proxy for websocket requests', async ({ browserName, platform, browserType, server }, testInfo) => {
  it.fixme(browserName === 'webkit' && platform !== 'linux');
  const { proxyServerAddr, closeProxyServer } = await setupSocksForwardingServer(testInfo.workerIndex + 2048 + 2, server.PORT);
  const browser = await browserType.launch({
    proxy: {
      server: proxyServerAddr,
    }
  });
  server.sendOnWebSocketConnection('incoming');
  server.setRoute('/target.html', async (req, res) => {
    res.end('Served by the proxy');
  });
  const page = await browser.newPage();
  // Hosts get resolved by the client
  await page.goto('http://fake-localhost-127-0-0-1.nip.io:1337/target.html');
  expect(await page.title()).toBe('Served by the proxy');
  const value = await page.evaluate(() => {
    let cb;
    const result = new Promise(f => cb = f);
    const ws = new WebSocket('ws://fake-localhost-127-0-0-1.nip.io:1337/ws');
    ws.addEventListener('message', data => { ws.close(); cb(data.data); });
    return result;
  });
  expect(value).toBe('incoming');
  await browser.close();
  await closeProxyServer();
});