/**
 * Copyright 2018 Google Inc. All rights reserved.
 * Modifications 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.
 */

const utils = require('./utils');

/**
 * @type {BrowserTestSuite}
 */
module.exports.describe = function({testRunner, expect, playwright, CHROMIUM, FFOX, WEBKIT, LINUX}) {
  const {describe, xdescribe, fdescribe} = testRunner;
  const {it, fit, xit, dit} = testRunner;
  const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;

  describe('BrowserContext', function() {
    it('should create new context', async function({browser}) {
      expect(browser.contexts().length).toBe(0);
      const context = await browser.newContext();
      expect(browser.contexts().length).toBe(1);
      expect(browser.contexts().indexOf(context) !== -1).toBe(true);
      await context.close();
      expect(browser.contexts().length).toBe(0);
    });
    it('window.open should use parent tab context', async function({browser, server}) {
      const context = await browser.newContext();
      const page = await context.newPage();
      await page.goto(server.EMPTY_PAGE);
      const [popup] = await Promise.all([
        page.waitForEvent('popup'),
        page.evaluate(url => window.open(url), server.EMPTY_PAGE)
      ]);
      expect(popup.context()).toBe(context);
      await context.close();
    });
    it('should isolate localStorage and cookies', async function({browser, server}) {
      // Create two incognito contexts.
      const context1 = await browser.newContext();
      const context2 = await browser.newContext();
      expect(context1.pages().length).toBe(0);
      expect(context2.pages().length).toBe(0);

      // Create a page in first incognito context.
      const page1 = await context1.newPage();
      await page1.goto(server.EMPTY_PAGE);
      await page1.evaluate(() => {
        localStorage.setItem('name', 'page1');
        document.cookie = 'name=page1';
      });

      expect(context1.pages().length).toBe(1);
      expect(context2.pages().length).toBe(0);

      // Create a page in second incognito context.
      const page2 = await context2.newPage();
      await page2.goto(server.EMPTY_PAGE);
      await page2.evaluate(() => {
        localStorage.setItem('name', 'page2');
        document.cookie = 'name=page2';
      });

      expect(context1.pages().length).toBe(1);
      expect(context2.pages().length).toBe(1);
      expect(context1.pages()[0]).toBe(page1);
      expect(context2.pages()[0]).toBe(page2);

      // Make sure pages don't share localstorage or cookies.
      expect(await page1.evaluate(() => localStorage.getItem('name'))).toBe('page1');
      expect(await page1.evaluate(() => document.cookie)).toBe('name=page1');
      expect(await page2.evaluate(() => localStorage.getItem('name'))).toBe('page2');
      expect(await page2.evaluate(() => document.cookie)).toBe('name=page2');

      // Cleanup contexts.
      await Promise.all([
        context1.close(),
        context2.close()
      ]);
      expect(browser.contexts().length).toBe(0);
    });
    it('should propagate default viewport to the page', async({ browser }) => {
      const context = await browser.newContext({ viewport: { width: 456, height: 789 } });
      const page = await context.newPage();
      expect(page.viewportSize().width).toBe(456);
      expect(page.viewportSize().height).toBe(789);
      expect(await page.evaluate('window.innerWidth')).toBe(456);
      expect(await page.evaluate('window.innerHeight')).toBe(789);
      await context.close();
    });
    it('should make a copy of default viewport', async({ browser }) => {
      const viewport = { width: 456, height: 789 };
      const context = await browser.newContext({ viewport });
      viewport.width = 567;
      const page = await context.newPage();
      expect(page.viewportSize().width).toBe(456);
      expect(page.viewportSize().height).toBe(789);
      expect(await page.evaluate('window.innerWidth')).toBe(456);
      expect(await page.evaluate('window.innerHeight')).toBe(789);
      await context.close();
    });
    it('close() should work for empty context', async({ browser }) => {
      const context = await browser.newContext();
      await context.close();
    });
    it('close() should abort waitForEvent', async({ browser }) => {
      const context = await browser.newContext();
      const promise = context.waitForEvent('page').catch(e => e);
      await context.close();
      let error = await promise;
      expect(error.message).toContain('Context closed');
    });
  });

  describe('BrowserContext({userAgent})', function() {
    it('should work', async({browser, server}) => {
      {
        const context = await browser.newContext();
        const page = await context.newPage();
        expect(await page.evaluate(() => navigator.userAgent)).toContain('Mozilla');
        await context.close();
      }
      {
        const context = await browser.newContext({ userAgent: 'foobar' });
        const page = await context.newPage();
        const [request] = await Promise.all([
          server.waitForRequest('/empty.html'),
          page.goto(server.EMPTY_PAGE),
        ]);
        expect(request.headers['user-agent']).toBe('foobar');
        await context.close();
      }
    });
    it('should work for subframes', async({browser, server}) => {
      {
        const context = await browser.newContext();
        const page = await context.newPage();
        expect(await page.evaluate(() => navigator.userAgent)).toContain('Mozilla');
        await context.close();
      }
      {
        const context = await browser.newContext({ userAgent: 'foobar' });
        const page = await context.newPage();
        const [request] = await Promise.all([
          server.waitForRequest('/empty.html'),
          utils.attachFrame(page, 'frame1', server.EMPTY_PAGE),
        ]);
        expect(request.headers['user-agent']).toBe('foobar');
        await context.close();
      }
    });
    it('should emulate device user-agent', async({browser, server}) => {
      {
        const context = await browser.newContext();
        const page = await context.newPage();
        await page.goto(server.PREFIX + '/mobile.html');
        expect(await page.evaluate(() => navigator.userAgent)).not.toContain('iPhone');
        await context.close();
      }
      {
        const context = await browser.newContext({ userAgent: playwright.devices['iPhone 6'].userAgent });
        const page = await context.newPage();
        await page.goto(server.PREFIX + '/mobile.html');
        expect(await page.evaluate(() => navigator.userAgent)).toContain('iPhone');
        await context.close();
      }
    });
    it('should make a copy of default options', async({browser, server}) => {
      const options = { userAgent: 'foobar' };
      const context = await browser.newContext(options);
      options.userAgent = 'wrong';
      const page = await context.newPage();
      const [request] = await Promise.all([
        server.waitForRequest('/empty.html'),
        page.goto(server.EMPTY_PAGE),
      ]);
      expect(request.headers['user-agent']).toBe('foobar');
      await context.close();
    });
  });

  describe('BrowserContext({bypassCSP})', function() {
    it('should bypass CSP meta tag', async({browser, server}) => {
      // Make sure CSP prohibits addScriptTag.
      {
        const context = await browser.newContext();
        const page = await context.newPage();
        await page.goto(server.PREFIX + '/csp.html');
        await page.addScriptTag({content: 'window.__injected = 42;'}).catch(e => void e);
        expect(await page.evaluate(() => window.__injected)).toBe(undefined);
        await context.close();
      }

      // By-pass CSP and try one more time.
      {
        const context = await browser.newContext({ bypassCSP: true });
        const page = await context.newPage();
        await page.goto(server.PREFIX + '/csp.html');
        await page.addScriptTag({content: 'window.__injected = 42;'});
        expect(await page.evaluate(() => window.__injected)).toBe(42);
        await context.close();
      }
    });

    it('should bypass CSP header', async({browser, server}) => {
      // Make sure CSP prohibits addScriptTag.
      server.setCSP('/empty.html', 'default-src "self"');

      {
        const context = await browser.newContext();
        const page = await context.newPage();
        await page.goto(server.EMPTY_PAGE);
        await page.addScriptTag({content: 'window.__injected = 42;'}).catch(e => void e);
        expect(await page.evaluate(() => window.__injected)).toBe(undefined);
        await context.close();
      }

      // By-pass CSP and try one more time.
      {
        const context = await browser.newContext({ bypassCSP: true });
        const page = await context.newPage();
        await page.goto(server.EMPTY_PAGE);
        await page.addScriptTag({content: 'window.__injected = 42;'});
        expect(await page.evaluate(() => window.__injected)).toBe(42);
        await context.close();
      }
    });

    it('should bypass after cross-process navigation', async({browser, server}) => {
      const context = await browser.newContext({ bypassCSP: true });
      const page = await context.newPage();
      await page.goto(server.PREFIX + '/csp.html');
      await page.addScriptTag({content: 'window.__injected = 42;'});
      expect(await page.evaluate(() => window.__injected)).toBe(42);

      await page.goto(server.CROSS_PROCESS_PREFIX + '/csp.html');
      await page.addScriptTag({content: 'window.__injected = 42;'});
      expect(await page.evaluate(() => window.__injected)).toBe(42);
      await context.close();
    });
    it('should bypass CSP in iframes as well', async({browser, server}) => {
      // Make sure CSP prohibits addScriptTag in an iframe.
      {
        const context = await browser.newContext();
        const page = await context.newPage();
        await page.goto(server.EMPTY_PAGE);
        const frame = await utils.attachFrame(page, 'frame1', server.PREFIX + '/csp.html');
        await frame.addScriptTag({content: 'window.__injected = 42;'}).catch(e => void e);
        expect(await frame.evaluate(() => window.__injected)).toBe(undefined);
        await context.close();
      }

      // By-pass CSP and try one more time.
      {
        const context = await browser.newContext({ bypassCSP: true });
        const page = await context.newPage();
        await page.goto(server.EMPTY_PAGE);
        const frame = await utils.attachFrame(page, 'frame1', server.PREFIX + '/csp.html');
        await frame.addScriptTag({content: 'window.__injected = 42;'}).catch(e => void e);
        expect(await frame.evaluate(() => window.__injected)).toBe(42);
        await context.close();
      }
    });
  });

  describe('BrowserContext({javaScriptEnabled})', function() {
    it('should work', async({browser}) => {
      {
        const context = await browser.newContext({ javaScriptEnabled: false });
        const page = await context.newPage();
        await page.goto('data:text/html, <script>var something = "forbidden"</script>');
        let error = null;
        await page.evaluate('something').catch(e => error = e);
        if (WEBKIT)
          expect(error.message).toContain('Can\'t find variable: something');
        else
          expect(error.message).toContain('something is not defined');
        await context.close();
      }

      {
        const context = await browser.newContext();
        const page = await context.newPage();
        await page.goto('data:text/html, <script>var something = "forbidden"</script>');
        expect(await page.evaluate('something')).toBe('forbidden');
        await context.close();
      }
    });
    it('should be able to navigate after disabling javascript', async({browser, server}) => {
      const context = await browser.newContext({ javaScriptEnabled: false });
      const page = await context.newPage();
      await page.goto(server.EMPTY_PAGE);
      await context.close();
    });
  });

  describe('BrowserContext.pages()', function() {
    it('should return all of the pages', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      const second = await context.newPage();
      const allPages = context.pages();
      expect(allPages.length).toBe(2);
      expect(allPages).toContain(page);
      expect(allPages).toContain(second);
      await context.close();
    });
    it('should close all belonging pages once closing context', async function({browser}) {
      const context = await browser.newContext();
      await context.newPage();
      expect(context.pages().length).toBe(1);

      await context.close();
      expect(context.pages().length).toBe(0);
    });
  });

  describe('BrowserContext.exposeFunction', () => {
    it('should work', async({browser, server}) => {
      const context = await browser.newContext();
      await context.exposeFunction('add', (a, b) => a + b);
      const page = await context.newPage();
      await page.exposeFunction('mul', (a, b) => a * b);
      const result = await page.evaluate(async function() {
        return { mul: await mul(9, 4), add: await add(9, 4) };
      });
      expect(result).toEqual({ mul: 36, add: 13 });
      await context.close();
    });
    it('should throw for duplicate registrations', async({browser, server}) => {
      const context = await browser.newContext();
      await context.exposeFunction('foo', () => {});
      await context.exposeFunction('bar', () => {});
      let error = await context.exposeFunction('foo', () => {}).catch(e => e);
      expect(error.message).toBe('Function "foo" has been already registered');
      const page = await context.newPage();
      error = await page.exposeFunction('foo', () => {}).catch(e => e);
      expect(error.message).toBe('Function "foo" has been already registered in the browser context');
      await page.exposeFunction('baz', () => {});
      error = await context.exposeFunction('baz', () => {}).catch(e => e);
      expect(error.message).toBe('Function "baz" has been already registered in one of the pages');
      await context.close();
    });
    it('should be callable from-inside addInitScript', async({browser, server}) => {
      const context = await browser.newContext();
      let args = [];
      await context.exposeFunction('woof', function(arg) {
        args.push(arg);
      });
      await context.addInitScript(() => woof('context'));
      const page = await context.newPage();
      await page.addInitScript(() => woof('page'));
      args = [];
      await page.reload();
      expect(args).toEqual(['context', 'page']);
      await context.close();
    });
  });

  describe('BrowserContext.route', () => {
    it('should intercept', async({browser, server}) => {
      const context = await browser.newContext();
      let intercepted = false;
      await context.route('**/empty.html', route => {
        intercepted = true;
        const request = route.request();
        expect(request.url()).toContain('empty.html');
        expect(request.headers()['user-agent']).toBeTruthy();
        expect(request.method()).toBe('GET');
        expect(request.postData()).toBe(null);
        expect(request.isNavigationRequest()).toBe(true);
        expect(request.resourceType()).toBe('document');
        expect(request.frame() === page.mainFrame()).toBe(true);
        expect(request.frame().url()).toBe('about:blank');
        route.continue();
      });
      const page = await context.newPage();
      const response = await page.goto(server.EMPTY_PAGE);
      expect(response.ok()).toBe(true);
      expect(intercepted).toBe(true);
      await context.close();
    });
    it('should yield to page.route', async({browser, server}) => {
      const context = await browser.newContext();
      await context.route('**/empty.html', route => {
        route.fulfill({ status: 200, body: 'context' });
      });
      const page = await context.newPage();
      await page.route('**/empty.html', route => {
        route.fulfill({ status: 200, body: 'page' });
      });
      const response = await page.goto(server.EMPTY_PAGE);
      expect(response.ok()).toBe(true);
      expect(await response.text()).toBe('page');
      await context.close();
    });
  });

  describe('BrowserContext.setHTTPCredentials', function() {
    it('should work', async({browser, server}) => {
      server.setAuth('/empty.html', 'user', 'pass');
      const context = await browser.newContext();
      const page = await context.newPage();
      let response = await page.goto(server.EMPTY_PAGE);
      expect(response.status()).toBe(401);
      await context.setHTTPCredentials({
        username: 'user',
        password: 'pass'
      });
      response = await page.reload();
      expect(response.status()).toBe(200);
      await context.close();
    });
    it('should fail if wrong credentials', async({browser, server}) => {
      server.setAuth('/empty.html', 'user', 'pass');
      const context = await browser.newContext({
        httpCredentials: { username: 'foo', password: 'bar' }
      });
      const page = await context.newPage();
      let response = await page.goto(server.EMPTY_PAGE);
      expect(response.status()).toBe(401);
      await context.setHTTPCredentials({
        username: 'user',
        password: 'pass'
      });
      response = await page.goto(server.EMPTY_PAGE);
      expect(response.status()).toBe(200);
      await context.close();
    });
    it('should allow disable authentication', async({browser, server}) => {
      server.setAuth('/empty.html', 'user', 'pass');
      const context = await browser.newContext({
        httpCredentials: { username: 'user', password: 'pass' }
      });
      const page = await context.newPage();
      let response = await page.goto(server.EMPTY_PAGE);
      expect(response.status()).toBe(200);
      await context.setHTTPCredentials(null);
      // Navigate to a different origin to bust Chromium's credential caching.
      response = await page.goto(server.CROSS_PROCESS_PREFIX + '/empty.html');
      expect(response.status()).toBe(401);
      await context.close();
    });
    it('should return resource body', async({browser, server}) => {
      server.setAuth('/playground.html', 'user', 'pass');
      const context = await browser.newContext({
        httpCredentials: { username: 'user', password: 'pass' }
      });
      const page = await context.newPage();
      let response = await page.goto(server.PREFIX + '/playground.html');
      expect(response.status()).toBe(200);
      expect(await page.title()).toBe("Playground");
      expect((await response.body()).toString()).toContain("Playground");
      await context.close();
    });
  });

  describe('BrowserContext.setOffline', function() {
    it('should work with initial option', async({browser, server}) => {
      const context = await browser.newContext({offline: true});
      const page = await context.newPage();
      let error = null;
      await page.goto(server.EMPTY_PAGE).catch(e => error = e);
      expect(error).toBeTruthy();
      await context.setOffline(false);
      const response = await page.goto(server.EMPTY_PAGE);
      expect(response.status()).toBe(200);
      await context.close();
    });
    it('should emulate navigator.onLine', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      expect(await page.evaluate(() => window.navigator.onLine)).toBe(true);
      await context.setOffline(true);
      expect(await page.evaluate(() => window.navigator.onLine)).toBe(false);
      await context.setOffline(false);
      expect(await page.evaluate(() => window.navigator.onLine)).toBe(true);
      await context.close();
    });
  });

  describe('Events.BrowserContext.Page', function() {
    it('should have url', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      const [otherPage] = await Promise.all([
        context.waitForEvent('page'),
        page.evaluate(url => window.open(url), server.EMPTY_PAGE)
      ]);
      expect(otherPage.url()).toBe(server.EMPTY_PAGE);
      await context.close();
    });
    it('should have url after domcontentloaded', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      const [otherPage] = await Promise.all([
        context.waitForEvent('page'),
        page.evaluate(url => window.open(url), server.EMPTY_PAGE)
      ]);
      await otherPage.waitForLoadState('domcontentloaded');
      expect(otherPage.url()).toBe(server.EMPTY_PAGE);
      await context.close();
    });
    it('should have about:blank url with domcontentloaded', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      const [otherPage] = await Promise.all([
        context.waitForEvent('page'),
        page.evaluate(url => window.open(url), 'about:blank')
      ]);
      await otherPage.waitForLoadState('domcontentloaded');
      expect(otherPage.url()).toBe('about:blank');
      await context.close();
    });
    it('should have about:blank for empty url with domcontentloaded', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      const [otherPage] = await Promise.all([
        context.waitForEvent('page'),
        page.evaluate(() => window.open())
      ]);
      await otherPage.waitForLoadState('domcontentloaded');
      expect(otherPage.url()).toBe('about:blank');
      await context.close();
    });
    it('should report when a new page is created and closed', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      const [otherPage] = await Promise.all([
        context.waitForEvent('page'),
        page.evaluate(url => window.open(url), server.CROSS_PROCESS_PREFIX + '/empty.html'),
      ]);
      // The url is about:blank in FF when 'page' event is fired.
      expect(otherPage.url()).toContain(server.CROSS_PROCESS_PREFIX);
      expect(await otherPage.evaluate(() => ['Hello', 'world'].join(' '))).toBe('Hello world');
      expect(await otherPage.$('body')).toBeTruthy();

      let allPages = context.pages();
      expect(allPages).toContain(page);
      expect(allPages).toContain(otherPage);

      let closeEventReceived;
      otherPage.once('close', () => closeEventReceived = true);
      await otherPage.close();
      expect(closeEventReceived).toBeTruthy();

      allPages = context.pages();
      expect(allPages).toContain(page);
      expect(allPages).not.toContain(otherPage);
      await context.close();
    });
    it('should report initialized pages', async({browser, server}) => {
      const context = await browser.newContext();
      const pagePromise = context.waitForEvent('page');
      context.newPage();
      const newPage = await pagePromise;
      expect(newPage.url()).toBe('about:blank');

      const popupPromise = context.waitForEvent('page');
      const evaluatePromise = newPage.evaluate(() => window.open('about:blank'));
      const popup = await popupPromise;
      expect(popup.url()).toBe('about:blank');
      await evaluatePromise;
      await context.close();
    });
    it('should not crash while redirecting of original request was missed', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      let serverResponse = null;
      server.setRoute('/one-style.css', (req, res) => serverResponse = res);
      // Open a new page. Use window.open to connect to the page later.
      const [newPage] = await Promise.all([
        context.waitForEvent('page'),
        page.evaluate(url => window.open(url), server.PREFIX + '/one-style.html'),
        server.waitForRequest('/one-style.css')
      ]);
      // Issue a redirect.
      serverResponse.writeHead(302, { location: '/injectedstyle.css' });
      serverResponse.end();
      await newPage.waitForLoadState('domcontentloaded');
      expect(newPage.url()).toBe(server.PREFIX + '/one-style.html');
      // Cleanup.
      await context.close();
    });
    it('should have an opener', async({browser, server}) => {
      const context = await browser.newContext();
      const page = await context.newPage();
      await page.goto(server.EMPTY_PAGE);
      const [popup] = await Promise.all([
        context.waitForEvent('page'),
        page.goto(server.PREFIX + '/popup/window-open.html')
      ]);
      // The url is still about:blank in FF when 'page' event is fired.
      expect(popup.url()).toBe(server.PREFIX + '/popup/popup.html');
      expect(await popup.opener()).toBe(page);
      expect(await page.opener()).toBe(null);
      await context.close();
    });
    it('should fire page lifecycle events', async function({browser, server}) {
      const context = await browser.newContext();
      const events = [];
      context.on('page', async page => {
        events.push('CREATED: ' + page.url());
        page.on('close', () => events.push('DESTROYED: ' + page.url()));
      });
      const page = await context.newPage();
      await page.goto(server.EMPTY_PAGE);
      await page.close();
      expect(events).toEqual([
        'CREATED: about:blank',
        `DESTROYED: ${server.EMPTY_PAGE}`
      ]);
      await context.close();
    });
  });
};