/**
 * Copyright 2018 Google Inc. All rights reserved.
 *
 * 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 expect = require('expect');
const {getTestState, setupTestBrowserHooks} = require('./mocha-utils');
const utils = require('./utils');

describe('BrowserContext', function() {
  setupTestBrowserHooks();
  itFailsFirefox('should have default context', async() => {
    const {browser} = getTestState();
    expect(browser.browserContexts().length).toEqual(1);
    const defaultContext = browser.browserContexts()[0];
    expect(defaultContext.isIncognito()).toBe(false);
    let error = null;
    await defaultContext.close().catch(e => error = e);
    expect(browser.defaultBrowserContext()).toBe(defaultContext);
    expect(error.message).toContain('cannot be closed');
  });
  itFailsFirefox('should create new incognito context', async() => {
    const {browser} = getTestState();

    expect(browser.browserContexts().length).toBe(1);
    const context = await browser.createIncognitoBrowserContext();
    expect(context.isIncognito()).toBe(true);
    expect(browser.browserContexts().length).toBe(2);
    expect(browser.browserContexts().indexOf(context) !== -1).toBe(true);
    await context.close();
    expect(browser.browserContexts().length).toBe(1);
  });
  itFailsFirefox('should close all belonging targets once closing context', async() => {
    const {browser} = getTestState();

    expect((await browser.pages()).length).toBe(1);

    const context = await browser.createIncognitoBrowserContext();
    await context.newPage();
    expect((await browser.pages()).length).toBe(2);
    expect((await context.pages()).length).toBe(1);

    await context.close();
    expect((await browser.pages()).length).toBe(1);
  });
  itFailsFirefox('window.open should use parent tab context', async() => {
    const {browser, server} = getTestState();

    const context = await browser.createIncognitoBrowserContext();
    const page = await context.newPage();
    await page.goto(server.EMPTY_PAGE);
    const [popupTarget] = await Promise.all([
      utils.waitEvent(browser, 'targetcreated'),
      page.evaluate(url => window.open(url), server.EMPTY_PAGE)
    ]);
    expect(popupTarget.browserContext()).toBe(context);
    await context.close();
  });
  itFailsFirefox('should fire target events', async() => {
    const {browser, server} = getTestState();

    const context = await browser.createIncognitoBrowserContext();
    const events = [];
    context.on('targetcreated', target => events.push('CREATED: ' + target.url()));
    context.on('targetchanged', target => events.push('CHANGED: ' + target.url()));
    context.on('targetdestroyed', target => events.push('DESTROYED: ' + target.url()));
    const page = await context.newPage();
    await page.goto(server.EMPTY_PAGE);
    await page.close();
    expect(events).toEqual([
      'CREATED: about:blank',
      `CHANGED: ${server.EMPTY_PAGE}`,
      `DESTROYED: ${server.EMPTY_PAGE}`
    ]);
    await context.close();
  });
  itFailsFirefox('should wait for a target', async() => {
    const {browser, server} = getTestState();

    const context = await browser.createIncognitoBrowserContext();
    let resolved = false;
    const targetPromise = context.waitForTarget(target => target.url() === server.EMPTY_PAGE);
    targetPromise.then(() => resolved = true);
    const page = await context.newPage();
    expect(resolved).toBe(false);
    await page.goto(server.EMPTY_PAGE);
    const target = await targetPromise;
    expect(await target.page()).toBe(page);
    await context.close();
  });

  it('should timeout waiting for a non-existent target', async() => {
    const {browser, server, puppeteer} = getTestState();

    const context = await browser.createIncognitoBrowserContext();
    const error = await context.waitForTarget(target => target.url() === server.EMPTY_PAGE, {timeout: 1}).catch(e => e);
    expect(error).toBeInstanceOf(puppeteer.errors.TimeoutError);
    await context.close();
  });

  itFailsFirefox('should isolate localStorage and cookies', async() => {
    const {browser, server} = getTestState();

    // Create two incognito contexts.
    const context1 = await browser.createIncognitoBrowserContext();
    const context2 = await browser.createIncognitoBrowserContext();
    expect(context1.targets().length).toBe(0);
    expect(context2.targets().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.targets().length).toBe(1);
    expect(context2.targets().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.targets().length).toBe(1);
    expect(context1.targets()[0]).toBe(page1.target());
    expect(context2.targets().length).toBe(1);
    expect(context2.targets()[0]).toBe(page2.target());

    // 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.browserContexts().length).toBe(1);
  });

  itFailsFirefox('should work across sessions', async() => {
    const {browser, puppeteer} = getTestState();

    expect(browser.browserContexts().length).toBe(1);
    const context = await browser.createIncognitoBrowserContext();
    expect(browser.browserContexts().length).toBe(2);
    const remoteBrowser = await puppeteer.connect({
      browserWSEndpoint: browser.wsEndpoint()
    });
    const contexts = remoteBrowser.browserContexts();
    expect(contexts.length).toBe(2);
    remoteBrowser.disconnect();
    await context.close();
  });
});