/**
 * 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.
 */

import expect from 'expect';
import {CDPSession} from '../../lib/cjs/puppeteer/common/Connection.js';
import {Frame} from '../../lib/cjs/puppeteer/common/Frame.js';
import {
  getTestState,
  itFailsFirefox,
  setupTestBrowserHooks,
  setupTestPageAndContextHooks,
} from './mocha-utils.js';
import utils, {dumpFrames} from './utils.js';

describe('Frame specs', function () {
  setupTestBrowserHooks();
  setupTestPageAndContextHooks();

  describe('Frame.executionContext', function () {
    itFailsFirefox('should work', async () => {
      const {page, server} = getTestState();

      await page.goto(server.EMPTY_PAGE);
      await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
      expect(page.frames().length).toBe(2);
      const [frame1, frame2] = page.frames();
      const context1 = await frame1!.executionContext();
      const context2 = await frame2!.executionContext();
      expect(context1).toBeTruthy();
      expect(context2).toBeTruthy();
      expect(context1 !== context2).toBeTruthy();
      expect(context1._world?.frame()).toBe(frame1);
      expect(context2._world?.frame()).toBe(frame2);

      await Promise.all([
        context1.evaluate(() => {
          return ((globalThis as any).a = 1);
        }),
        context2.evaluate(() => {
          return ((globalThis as any).a = 2);
        }),
      ]);
      const [a1, a2] = await Promise.all([
        context1.evaluate(() => {
          return (globalThis as any).a;
        }),
        context2.evaluate(() => {
          return (globalThis as any).a;
        }),
      ]);
      expect(a1).toBe(1);
      expect(a2).toBe(2);
    });
  });

  describe('Frame.evaluateHandle', function () {
    it('should work', async () => {
      const {page, server} = getTestState();

      await page.goto(server.EMPTY_PAGE);
      const mainFrame = page.mainFrame();
      const windowHandle = await mainFrame.evaluateHandle(() => {
        return window;
      });
      expect(windowHandle).toBeTruthy();
    });
  });

  describe('Frame.evaluate', function () {
    itFailsFirefox('should throw for detached frames', async () => {
      const {page, server} = getTestState();

      const frame1 = (await utils.attachFrame(
        page,
        'frame1',
        server.EMPTY_PAGE
      ))!;
      await utils.detachFrame(page, 'frame1');
      let error!: Error;
      await frame1
        .evaluate(() => {
          return 7 * 8;
        })
        .catch(error_ => {
          return (error = error_);
        });
      expect(error.message).toContain(
        'Execution context is not available in detached frame'
      );
    });

    it('allows readonly array to be an argument', async () => {
      const {page, server} = getTestState();
      await page.goto(server.EMPTY_PAGE);
      const mainFrame = page.mainFrame();

      // This test checks if Frame.evaluate allows a readonly array to be an argument.
      // See https://github.com/puppeteer/puppeteer/issues/6953.
      const readonlyArray: readonly string[] = ['a', 'b', 'c'];
      await mainFrame.evaluate(arr => {
        return arr;
      }, readonlyArray);
    });
  });

  describe('Frame.page', function () {
    it('should retrieve the page from a frame', async () => {
      const {page, server} = getTestState();
      await page.goto(server.EMPTY_PAGE);
      const mainFrame = page.mainFrame();
      expect(mainFrame.page()).toEqual(page);
    });
  });

  describe('Frame Management', function () {
    itFailsFirefox('should handle nested frames', async () => {
      const {page, server} = getTestState();

      await page.goto(server.PREFIX + '/frames/nested-frames.html');
      expect(dumpFrames(page.mainFrame())).toEqual([
        'http://localhost:<PORT>/frames/nested-frames.html',
        '    http://localhost:<PORT>/frames/two-frames.html (2frames)',
        '        http://localhost:<PORT>/frames/frame.html (uno)',
        '        http://localhost:<PORT>/frames/frame.html (dos)',
        '    http://localhost:<PORT>/frames/frame.html (aframe)',
      ]);
    });
    itFailsFirefox(
      'should send events when frames are manipulated dynamically',
      async () => {
        const {page, server} = getTestState();

        await page.goto(server.EMPTY_PAGE);
        // validate frameattached events
        const attachedFrames: Frame[] = [];
        page.on('frameattached', frame => {
          return attachedFrames.push(frame);
        });
        await utils.attachFrame(page, 'frame1', './assets/frame.html');
        expect(attachedFrames.length).toBe(1);
        expect(attachedFrames[0]!.url()).toContain('/assets/frame.html');

        // validate framenavigated events
        const navigatedFrames: Frame[] = [];
        page.on('framenavigated', frame => {
          return navigatedFrames.push(frame);
        });
        await utils.navigateFrame(page, 'frame1', './empty.html');
        expect(navigatedFrames.length).toBe(1);
        expect(navigatedFrames[0]!.url()).toBe(server.EMPTY_PAGE);

        // validate framedetached events
        const detachedFrames: Frame[] = [];
        page.on('framedetached', frame => {
          return detachedFrames.push(frame);
        });
        await utils.detachFrame(page, 'frame1');
        expect(detachedFrames.length).toBe(1);
        expect(detachedFrames[0]!.isDetached()).toBe(true);
      }
    );
    it('should send "framenavigated" when navigating on anchor URLs', async () => {
      const {page, server} = getTestState();

      await page.goto(server.EMPTY_PAGE);
      await Promise.all([
        page.goto(server.EMPTY_PAGE + '#foo'),
        utils.waitEvent(page, 'framenavigated'),
      ]);
      expect(page.url()).toBe(server.EMPTY_PAGE + '#foo');
    });
    it('should persist mainFrame on cross-process navigation', async () => {
      const {page, server} = getTestState();

      await page.goto(server.EMPTY_PAGE);
      const mainFrame = page.mainFrame();
      await page.goto(server.CROSS_PROCESS_PREFIX + '/empty.html');
      expect(page.mainFrame() === mainFrame).toBeTruthy();
    });
    it('should not send attach/detach events for main frame', async () => {
      const {page, server} = getTestState();

      let hasEvents = false;
      page.on('frameattached', () => {
        return (hasEvents = true);
      });
      page.on('framedetached', () => {
        return (hasEvents = true);
      });
      await page.goto(server.EMPTY_PAGE);
      expect(hasEvents).toBe(false);
    });
    it('should detach child frames on navigation', async () => {
      const {page, server} = getTestState();

      let attachedFrames = [];
      let detachedFrames = [];
      let navigatedFrames = [];
      page.on('frameattached', frame => {
        return attachedFrames.push(frame);
      });
      page.on('framedetached', frame => {
        return detachedFrames.push(frame);
      });
      page.on('framenavigated', frame => {
        return navigatedFrames.push(frame);
      });
      await page.goto(server.PREFIX + '/frames/nested-frames.html');
      expect(attachedFrames.length).toBe(4);
      expect(detachedFrames.length).toBe(0);
      expect(navigatedFrames.length).toBe(5);

      attachedFrames = [];
      detachedFrames = [];
      navigatedFrames = [];
      await page.goto(server.EMPTY_PAGE);
      expect(attachedFrames.length).toBe(0);
      expect(detachedFrames.length).toBe(4);
      expect(navigatedFrames.length).toBe(1);
    });
    it('should support framesets', async () => {
      const {page, server} = getTestState();

      let attachedFrames = [];
      let detachedFrames = [];
      let navigatedFrames = [];
      page.on('frameattached', frame => {
        return attachedFrames.push(frame);
      });
      page.on('framedetached', frame => {
        return detachedFrames.push(frame);
      });
      page.on('framenavigated', frame => {
        return navigatedFrames.push(frame);
      });
      await page.goto(server.PREFIX + '/frames/frameset.html');
      expect(attachedFrames.length).toBe(4);
      expect(detachedFrames.length).toBe(0);
      expect(navigatedFrames.length).toBe(5);

      attachedFrames = [];
      detachedFrames = [];
      navigatedFrames = [];
      await page.goto(server.EMPTY_PAGE);
      expect(attachedFrames.length).toBe(0);
      expect(detachedFrames.length).toBe(4);
      expect(navigatedFrames.length).toBe(1);
    });
    itFailsFirefox('should report frame from-inside shadow DOM', async () => {
      const {page, server} = getTestState();

      await page.goto(server.PREFIX + '/shadow.html');
      await page.evaluate(async (url: string) => {
        const frame = document.createElement('iframe');
        frame.src = url;
        document.body.shadowRoot!.appendChild(frame);
        await new Promise(x => {
          return (frame.onload = x);
        });
      }, server.EMPTY_PAGE);
      expect(page.frames().length).toBe(2);
      expect(page.frames()[1]!.url()).toBe(server.EMPTY_PAGE);
    });
    itFailsFirefox('should report frame.name()', async () => {
      const {page, server} = getTestState();

      await utils.attachFrame(page, 'theFrameId', server.EMPTY_PAGE);
      await page.evaluate((url: string) => {
        const frame = document.createElement('iframe');
        frame.name = 'theFrameName';
        frame.src = url;
        document.body.appendChild(frame);
        return new Promise(x => {
          return (frame.onload = x);
        });
      }, server.EMPTY_PAGE);
      expect(page.frames()[0]!.name()).toBe('');
      expect(page.frames()[1]!.name()).toBe('theFrameId');
      expect(page.frames()[2]!.name()).toBe('theFrameName');
    });
    itFailsFirefox('should report frame.parent()', async () => {
      const {page, server} = getTestState();

      await utils.attachFrame(page, 'frame1', server.EMPTY_PAGE);
      await utils.attachFrame(page, 'frame2', server.EMPTY_PAGE);
      expect(page.frames()[0]!.parentFrame()).toBe(null);
      expect(page.frames()[1]!.parentFrame()).toBe(page.mainFrame());
      expect(page.frames()[2]!.parentFrame()).toBe(page.mainFrame());
    });
    itFailsFirefox(
      'should report different frame instance when frame re-attaches',
      async () => {
        const {page, server} = getTestState();

        const frame1 = await utils.attachFrame(
          page,
          'frame1',
          server.EMPTY_PAGE
        );
        await page.evaluate(() => {
          (globalThis as any).frame = document.querySelector('#frame1');
          (globalThis as any).frame.remove();
        });
        expect(frame1!.isDetached()).toBe(true);
        const [frame2] = await Promise.all([
          utils.waitEvent(page, 'frameattached'),
          page.evaluate(() => {
            return document.body.appendChild((globalThis as any).frame);
          }),
        ]);
        expect(frame2.isDetached()).toBe(false);
        expect(frame1).not.toBe(frame2);
      }
    );
    it('should support url fragment', async () => {
      const {page, server} = getTestState();

      await page.goto(server.PREFIX + '/frames/one-frame-url-fragment.html');

      expect(page.frames().length).toBe(2);
      expect(page.frames()[1]!.url()).toBe(
        server.PREFIX + '/frames/frame.html?param=value#fragment'
      );
    });
    itFailsFirefox('should support lazy frames', async () => {
      const {page, server} = getTestState();

      await page.setViewport({width: 1000, height: 1000});
      await page.goto(server.PREFIX + '/frames/lazy-frame.html');

      expect(
        page.frames().map(frame => {
          return frame._hasStartedLoading;
        })
      ).toEqual([true, true, false]);
    });
  });

  describe('Frame.client', function () {
    it('should return the client instance', async () => {
      const {page} = getTestState();
      expect(page.mainFrame()._client()).toBeInstanceOf(CDPSession);
    });
  });
});
