import { browser, element, by, promise } from 'protractor';
import { SitePage } from './app.po';

describe('site App', function() {
  let page: SitePage;

  beforeEach(() => {
    SitePage.setWindowWidth(1050);   // Make the window wide enough to show the SideNav side-by-side.
    page = new SitePage();
    page.navigateTo();
  });

  it('should show features text after clicking "Features"', () => {
    page.getLink('features').click();
    expect(page.getDocViewerText()).toMatch(/Progressive web apps/i);
  });

  it('should show the tutorial index page at `/tutorial/` after jitterbugging through features', () => {
    // check that we can navigate directly to the tutorial page
    page.navigateTo('tutorial/');
    expect(page.getDocViewerText()).toMatch(/Tutorial: Tour of Heroes/i);

    // navigate to a different page
    page.getLink('features').click();
    expect(page.getDocViewerText()).toMatch(/Progressive web apps/i);

    // Show the menu
    page.docsMenuLink.click();

    // Open the tutorial header
    page.getNavItem(/tutorial/i).click();

    // Navigate to the tutorial introduction via a link in the sidenav
    page.getNavItem(/introduction/i).click();
    expect(page.getDocViewerText()).toMatch(/Tutorial: Tour of Heroes/i);
  });

  it('should render `{@example}` dgeni tags as `<code-example>` elements with HTML escaped content', () => {
    page.navigateTo('guide/component-styles');
    const codeExample = element.all(by.css('code-example')).first();
    expect(page.getInnerHtml(codeExample)).toContain('&lt;h1&gt;Tour of Heroes&lt;/h1&gt;');
  });

  describe('scrolling to the top', () => {
    it('should scroll to the top when navigating to another page', () => {
      page.navigateTo('guide/docs');
      page.scrollToBottom();
      page.getScrollTop().then(scrollTop => expect(scrollTop).toBeGreaterThan(0));

      page.navigateTo('guide/api');
      page.getScrollTop().then(scrollTop => expect(scrollTop).toBe(0));
    });

    it('should scroll to the top when navigating to the same page', () => {
      page.navigateTo('guide/docs');
      page.scrollToBottom();
      page.getScrollTop().then(scrollTop => expect(scrollTop).toBeGreaterThan(0));

      page.navigateTo('guide/docs');
      page.getScrollTop().then(scrollTop => expect(scrollTop).toBe(0));
    });
  });

  describe('api-docs', () => {
    it('should show a link to github', () => {
      page.navigateTo('api/common/NgClass');
      expect(page.ghLink.getAttribute('href'))
          .toMatch(/https:\/\/github.com\/angular\/angular\/tree\/.+\/packages\/common\/src\/directives\/ng_class\.ts/);
    });
  });

  describe('tutorial docs', () => {
    it('should not render a paragraph element inside the h1 element', () => {
      page.navigateTo('tutorial/toh-pt1');
      expect(element(by.css('h1 p')).isPresent()).toBeFalsy();
    });
  });

  describe('google analytics', () => {
    beforeEach(done => page.gaReady.then(done));

    it('should call ga', done => {
      page.ga()
        .then(calls => {
          expect(calls.length).toBeGreaterThan(2, 'ga calls');
          done();
        });
    });

    it('should call ga with initial URL', done => {
      let path: string;

      page.locationPath()
        .then(p => path = p)
        .then(() => page.ga().then(calls => {
          expect(calls.length).toBeGreaterThan(2, 'ga calls');
          expect(calls[1]).toEqual(['set', 'page', path]);
          done();
        }));
    });

    // Todo: add test to confirm tracking URL when navigate.
  });

});