import { GlIcon, GlIntersectionObserver } from '@gitlab/ui';
import MockAdapter from 'axios-mock-adapter';
import { nextTick } from 'vue';
import { setHTMLFixture, resetHTMLFixture } from 'helpers/fixtures';
import { createMockDirective, getBinding } from 'helpers/vue_mock_directive';
import { shallowMountExtended } from 'helpers/vue_test_utils_helper';
import waitForPromises from 'helpers/wait_for_promises';
import { createAlert } from '~/flash';
import {
  IssuableStatusText,
  STATUS_CLOSED,
  STATUS_OPEN,
  STATUS_REOPENED,
  TYPE_EPIC,
  TYPE_ISSUE,
} from '~/issues/constants';
import IssuableApp from '~/issues/show/components/app.vue';
import DescriptionComponent from '~/issues/show/components/description.vue';
import EditedComponent from '~/issues/show/components/edited.vue';
import FormComponent from '~/issues/show/components/form.vue';
import TitleComponent from '~/issues/show/components/title.vue';
import IncidentTabs from '~/issues/show/components/incidents/incident_tabs.vue';
import PinnedLinks from '~/issues/show/components/pinned_links.vue';
import { POLLING_DELAY } from '~/issues/show/constants';
import eventHub from '~/issues/show/event_hub';
import axios from '~/lib/utils/axios_utils';
import { HTTP_STATUS_OK } from '~/lib/utils/http_status';
import { visitUrl } from '~/lib/utils/url_utility';
import {
  appProps,
  initialRequest,
  publishedIncidentUrl,
  secondRequest,
  zoomMeetingUrl,
} from '../mock_data/mock_data';

jest.mock('~/flash');
jest.mock('~/issues/show/event_hub');
jest.mock('~/lib/utils/url_utility');
jest.mock('~/behaviors/markdown/render_gfm');

const REALTIME_REQUEST_STACK = [initialRequest, secondRequest];

describe('Issuable output', () => {
  let mock;
  let realtimeRequestCount = 0;
  let wrapper;

  const findStickyHeader = () => wrapper.findByTestId('issue-sticky-header');
  const findLockedBadge = () => wrapper.findByTestId('locked');
  const findConfidentialBadge = () => wrapper.findByTestId('confidential');
  const findHiddenBadge = () => wrapper.findByTestId('hidden');

  const findTitle = () => wrapper.findComponent(TitleComponent);
  const findDescription = () => wrapper.findComponent(DescriptionComponent);
  const findEdited = () => wrapper.findComponent(EditedComponent);
  const findForm = () => wrapper.findComponent(FormComponent);
  const findPinnedLinks = () => wrapper.findComponent(PinnedLinks);

  const mountComponent = (props = {}, options = {}, data = {}) => {
    wrapper = shallowMountExtended(IssuableApp, {
      directives: {
        GlTooltip: createMockDirective(),
      },
      propsData: { ...appProps, ...props },
      provide: {
        fullPath: 'gitlab-org/incidents',
        iid: '19',
        uploadMetricsFeatureAvailable: false,
      },
      stubs: {
        HighlightBar: true,
        IncidentTabs: true,
      },
      data() {
        return {
          ...data,
        };
      },
      ...options,
    });
  };

  beforeEach(() => {
    setHTMLFixture(`
      <div>
        <title>Title</title>
        <div class="detail-page-description content-block">
        <details open>
          <summary>One</summary>
        </details>
        <details>
          <summary>Two</summary>
        </details>
      </div>
        <div class="flash-container"></div>
        <span id="task_status"></span>
      </div>
    `);

    mock = new MockAdapter(axios);
    mock
      .onGet('/gitlab-org/gitlab-shell/-/issues/9/realtime_changes/realtime_changes')
      .reply(() => {
        const res = Promise.resolve([HTTP_STATUS_OK, REALTIME_REQUEST_STACK[realtimeRequestCount]]);
        realtimeRequestCount += 1;
        return res;
      });

    mountComponent();

    jest.advanceTimersByTime(2);
  });

  afterEach(() => {
    mock.restore();
    realtimeRequestCount = 0;
    wrapper.vm.poll.stop();
    wrapper.destroy();
    resetHTMLFixture();
  });

  it('should render a title/description/edited and update title/description/edited on update', () => {
    return axios
      .waitForAll()
      .then(() => {
        expect(findTitle().props('titleText')).toContain('this is a title');
        expect(findDescription().props('descriptionText')).toContain('this is a description');

        expect(findEdited().exists()).toBe(true);
        expect(findEdited().props('updatedByPath')).toMatch(/\/some_user$/);
        expect(findEdited().props('updatedAt')).toBe(initialRequest.updated_at);
        expect(wrapper.vm.state.lock_version).toBe(initialRequest.lock_version);
      })
      .then(() => {
        wrapper.vm.poll.makeRequest();
        return axios.waitForAll();
      })
      .then(() => {
        expect(findTitle().props('titleText')).toContain('2');
        expect(findDescription().props('descriptionText')).toContain('42');

        expect(findEdited().exists()).toBe(true);
        expect(findEdited().props('updatedByName')).toBe('Other User');
        expect(findEdited().props('updatedByPath')).toMatch(/\/other_user$/);
        expect(findEdited().props('updatedAt')).toBe(secondRequest.updated_at);
      });
  });

  it('shows actions if permissions are correct', async () => {
    wrapper.vm.showForm = true;

    await nextTick();
    expect(findForm().exists()).toBe(true);
  });

  it('does not show actions if permissions are incorrect', async () => {
    wrapper.vm.showForm = true;
    wrapper.setProps({ canUpdate: false });

    await nextTick();
    expect(findForm().exists()).toBe(false);
  });

  it('does not update formState if form is already open', async () => {
    wrapper.vm.updateAndShowForm();

    wrapper.vm.state.titleText = 'testing 123';

    wrapper.vm.updateAndShowForm();

    await nextTick();
    expect(wrapper.vm.store.formState.title).not.toBe('testing 123');
  });

  describe('Pinned links propagated', () => {
    it.each`
      prop                      | value
      ${'zoomMeetingUrl'}       | ${zoomMeetingUrl}
      ${'publishedIncidentUrl'} | ${publishedIncidentUrl}
    `('sets the $prop correctly on underlying pinned links', ({ prop, value }) => {
      expect(findPinnedLinks().props(prop)).toBe(value);
    });
  });

  describe('updateIssuable', () => {
    it('fetches new data after update', async () => {
      const updateStoreSpy = jest.spyOn(wrapper.vm, 'updateStoreState');
      const getDataSpy = jest.spyOn(wrapper.vm.service, 'getData');
      jest.spyOn(wrapper.vm.service, 'updateIssuable').mockResolvedValue({
        data: { web_url: window.location.pathname },
      });

      await wrapper.vm.updateIssuable();
      expect(updateStoreSpy).toHaveBeenCalled();
      expect(getDataSpy).toHaveBeenCalled();
    });

    it('correctly updates issuable data', async () => {
      const spy = jest.spyOn(wrapper.vm.service, 'updateIssuable').mockResolvedValue({
        data: { web_url: window.location.pathname },
      });

      await wrapper.vm.updateIssuable();
      expect(spy).toHaveBeenCalledWith(wrapper.vm.formState);
      expect(eventHub.$emit).toHaveBeenCalledWith('close.form');
    });

    it('does not redirect if issue has not moved', async () => {
      jest.spyOn(wrapper.vm.service, 'updateIssuable').mockResolvedValue({
        data: {
          web_url: window.location.pathname,
          confidential: wrapper.vm.isConfidential,
        },
      });

      await wrapper.vm.updateIssuable();
      expect(visitUrl).not.toHaveBeenCalled();
    });

    it('does not redirect if issue has not moved and user has switched tabs', async () => {
      jest.spyOn(wrapper.vm.service, 'updateIssuable').mockResolvedValue({
        data: {
          web_url: '',
          confidential: wrapper.vm.isConfidential,
        },
      });

      await wrapper.vm.updateIssuable();
      expect(visitUrl).not.toHaveBeenCalled();
    });

    it('redirects if returned web_url has changed', async () => {
      jest.spyOn(wrapper.vm.service, 'updateIssuable').mockResolvedValue({
        data: {
          web_url: '/testing-issue-move',
          confidential: wrapper.vm.isConfidential,
        },
      });

      wrapper.vm.updateIssuable();

      await wrapper.vm.updateIssuable();
      expect(visitUrl).toHaveBeenCalledWith('/testing-issue-move');
    });

    describe('shows dialog when issue has unsaved changed', () => {
      it('confirms on title change', async () => {
        wrapper.vm.showForm = true;
        wrapper.vm.state.titleText = 'title has changed';
        const e = { returnValue: null };
        wrapper.vm.handleBeforeUnloadEvent(e);

        await nextTick();
        expect(e.returnValue).not.toBeNull();
      });

      it('confirms on description change', async () => {
        wrapper.vm.showForm = true;
        wrapper.vm.state.descriptionText = 'description has changed';
        const e = { returnValue: null };
        wrapper.vm.handleBeforeUnloadEvent(e);

        await nextTick();
        expect(e.returnValue).not.toBeNull();
      });

      it('does nothing when nothing has changed', async () => {
        const e = { returnValue: null };
        wrapper.vm.handleBeforeUnloadEvent(e);

        await nextTick();
        expect(e.returnValue).toBeNull();
      });
    });

    describe('error when updating', () => {
      it('closes form on error', async () => {
        jest.spyOn(wrapper.vm.service, 'updateIssuable').mockRejectedValue();

        await wrapper.vm.updateIssuable();
        expect(eventHub.$emit).not.toHaveBeenCalledWith('close.form');
        expect(createAlert).toHaveBeenCalledWith({ message: `Error updating issue` });
      });

      it('returns the correct error message for issuableType', async () => {
        jest.spyOn(wrapper.vm.service, 'updateIssuable').mockRejectedValue();
        wrapper.setProps({ issuableType: 'merge request' });

        await nextTick();
        await wrapper.vm.updateIssuable();
        expect(eventHub.$emit).not.toHaveBeenCalledWith('close.form');
        expect(createAlert).toHaveBeenCalledWith({ message: `Error updating merge request` });
      });

      it('shows error message from backend if exists', async () => {
        const msg = 'Custom error message from backend';
        jest
          .spyOn(wrapper.vm.service, 'updateIssuable')
          .mockRejectedValue({ response: { data: { errors: [msg] } } });

        await wrapper.vm.updateIssuable();
        expect(createAlert).toHaveBeenCalledWith({
          message: `${wrapper.vm.defaultErrorMessage}. ${msg}`,
        });
      });
    });
  });

  describe('updateAndShowForm', () => {
    it('shows locked warning if form is open & data is different', async () => {
      await nextTick();
      wrapper.vm.updateAndShowForm();

      wrapper.vm.poll.makeRequest();

      await new Promise((resolve) => {
        wrapper.vm.$watch('formState.lockedWarningVisible', (value) => {
          if (value) {
            resolve();
          }
        });
      });

      expect(wrapper.vm.formState.lockedWarningVisible).toBe(true);
      expect(wrapper.vm.formState.lock_version).toBe(1);
    });
  });

  describe('requestTemplatesAndShowForm', () => {
    let formSpy;

    beforeEach(() => {
      formSpy = jest.spyOn(wrapper.vm, 'updateAndShowForm');
    });

    it('shows the form if template names as hash request is successful', () => {
      const mockData = {
        test: [{ name: 'test', id: 'test', project_path: '/', namespace_path: '/' }],
      };
      mock
        .onGet('/issuable-templates-path')
        .reply(() => Promise.resolve([HTTP_STATUS_OK, mockData]));

      return wrapper.vm.requestTemplatesAndShowForm().then(() => {
        expect(formSpy).toHaveBeenCalledWith(mockData);
      });
    });

    it('shows the form if template names as array request is successful', () => {
      const mockData = [{ name: 'test', id: 'test', project_path: '/', namespace_path: '/' }];
      mock
        .onGet('/issuable-templates-path')
        .reply(() => Promise.resolve([HTTP_STATUS_OK, mockData]));

      return wrapper.vm.requestTemplatesAndShowForm().then(() => {
        expect(formSpy).toHaveBeenCalledWith(mockData);
      });
    });

    it('shows the form if template names request failed', () => {
      mock
        .onGet('/issuable-templates-path')
        .reply(() => Promise.reject(new Error('something went wrong')));

      return wrapper.vm.requestTemplatesAndShowForm().then(() => {
        expect(createAlert).toHaveBeenCalledWith({ message: 'Error updating issue' });

        expect(formSpy).toHaveBeenCalledWith();
      });
    });
  });

  describe('show inline edit button', () => {
    it('should render by default', () => {
      expect(findTitle().props('showInlineEditButton')).toBe(true);
    });

    it('should render if showInlineEditButton', async () => {
      wrapper.setProps({ showInlineEditButton: true });

      await nextTick();
      expect(findTitle().props('showInlineEditButton')).toBe(true);
    });

    it('should not render if showInlineEditButton is false', async () => {
      wrapper.setProps({ showInlineEditButton: false });

      await nextTick();
      expect(findTitle().props('showInlineEditButton')).toBe(false);
    });
  });

  describe('updateStoreState', () => {
    it('should make a request and update the state of the store', () => {
      const data = { foo: 1 };
      const getDataSpy = jest.spyOn(wrapper.vm.service, 'getData').mockResolvedValue({ data });
      const updateStateSpy = jest
        .spyOn(wrapper.vm.store, 'updateState')
        .mockImplementation(jest.fn);

      return wrapper.vm.updateStoreState().then(() => {
        expect(getDataSpy).toHaveBeenCalled();
        expect(updateStateSpy).toHaveBeenCalledWith(data);
      });
    });

    it('should show error message if store update fails', () => {
      jest.spyOn(wrapper.vm.service, 'getData').mockRejectedValue();
      wrapper.setProps({ issuableType: 'merge request' });

      return wrapper.vm.updateStoreState().then(() => {
        expect(createAlert).toHaveBeenCalledWith({
          message: `Error updating ${wrapper.vm.issuableType}`,
        });
      });
    });
  });

  describe('issueChanged', () => {
    beforeEach(() => {
      wrapper.vm.store.formState.title = '';
      wrapper.vm.store.formState.description = '';
      wrapper.setProps({
        initialDescriptionText: '',
        initialTitleText: '',
      });
    });

    it('returns true when title is changed', () => {
      wrapper.vm.store.formState.title = 'RandomText';

      expect(wrapper.vm.issueChanged).toBe(true);
    });

    it('returns false when title is empty null', () => {
      wrapper.vm.store.formState.title = null;

      expect(wrapper.vm.issueChanged).toBe(false);
    });

    it('returns true when description is changed', () => {
      wrapper.vm.store.formState.description = 'RandomText';

      expect(wrapper.vm.issueChanged).toBe(true);
    });

    it('returns false when description is empty null', () => {
      wrapper.vm.store.formState.description = null;

      expect(wrapper.vm.issueChanged).toBe(false);
    });

    it('returns false when `initialDescriptionText` is null and `formState.description` is empty string', () => {
      wrapper.vm.store.formState.description = '';
      wrapper.setProps({ initialDescriptionText: null });

      expect(wrapper.vm.issueChanged).toBe(false);
    });
  });

  describe('sticky header', () => {
    describe('when title is in view', () => {
      it('is not shown', () => {
        expect(findStickyHeader().exists()).toBe(false);
      });
    });

    describe('when title is not in view', () => {
      beforeEach(() => {
        wrapper.vm.state.titleText = 'Sticky header title';
        wrapper.findComponent(GlIntersectionObserver).vm.$emit('disappear');
      });

      it('shows with title', () => {
        expect(findStickyHeader().text()).toContain('Sticky header title');
      });

      it('shows with title for an epic', async () => {
        wrapper.setProps({ issuableType: 'epic' });

        await nextTick();

        expect(findStickyHeader().text()).toContain('Sticky header title');
      });

      it.each`
        issuableType  | issuableStatus   | statusIcon
        ${TYPE_ISSUE} | ${STATUS_OPEN}   | ${'issues'}
        ${TYPE_ISSUE} | ${STATUS_CLOSED} | ${'issue-closed'}
        ${TYPE_EPIC}  | ${STATUS_OPEN}   | ${'epic'}
        ${TYPE_EPIC}  | ${STATUS_CLOSED} | ${'epic-closed'}
      `(
        'shows with state icon "$statusIcon" for $issuableType when status is $issuableStatus',
        async ({ issuableType, issuableStatus, statusIcon }) => {
          wrapper.setProps({ issuableType, issuableStatus });

          await nextTick();

          expect(findStickyHeader().findComponent(GlIcon).props('name')).toBe(statusIcon);
        },
      );

      it.each`
        title                                        | state
        ${'shows with Open when status is opened'}   | ${STATUS_OPEN}
        ${'shows with Closed when status is closed'} | ${STATUS_CLOSED}
        ${'shows with Open when status is reopened'} | ${STATUS_REOPENED}
      `('$title', async ({ state }) => {
        wrapper.setProps({ issuableStatus: state });

        await nextTick();

        expect(findStickyHeader().text()).toContain(IssuableStatusText[state]);
      });

      it.each`
        title                                                                | isConfidential
        ${'does not show confidential badge when issue is not confidential'} | ${false}
        ${'shows confidential badge when issue is confidential'}             | ${true}
      `('$title', async ({ isConfidential }) => {
        wrapper.setProps({ isConfidential });

        await nextTick();

        const confidentialEl = findConfidentialBadge();
        expect(confidentialEl.exists()).toBe(isConfidential);
        if (isConfidential) {
          expect(confidentialEl.props()).toMatchObject({
            workspaceType: 'project',
            issuableType: 'issue',
          });
        }
      });

      it.each`
        title                                                    | isLocked
        ${'does not show locked badge when issue is not locked'} | ${false}
        ${'shows locked badge when issue is locked'}             | ${true}
      `('$title', async ({ isLocked }) => {
        wrapper.setProps({ isLocked });

        await nextTick();

        expect(findLockedBadge().exists()).toBe(isLocked);
      });

      it.each`
        title                                                    | isHidden
        ${'does not show hidden badge when issue is not hidden'} | ${false}
        ${'shows hidden badge when issue is hidden'}             | ${true}
      `('$title', async ({ isHidden }) => {
        wrapper.setProps({ isHidden });

        await nextTick();

        const hiddenBadge = findHiddenBadge();

        expect(hiddenBadge.exists()).toBe(isHidden);

        if (isHidden) {
          expect(hiddenBadge.attributes('title')).toBe(
            'This issue is hidden because its author has been banned',
          );
          expect(getBinding(hiddenBadge.element, 'gl-tooltip')).not.toBeUndefined();
        }
      });
    });
  });

  describe('Composable description component', () => {
    const findIncidentTabs = () => wrapper.findComponent(IncidentTabs);
    const borderClass = 'gl-border-b-1 gl-border-b-gray-100 gl-border-b-solid gl-mb-6';

    describe('when using description component', () => {
      it('renders the description component', () => {
        expect(findDescription().exists()).toBe(true);
      });

      it('does not render incident tabs', () => {
        expect(findIncidentTabs().exists()).toBe(false);
      });

      it('adds a border below the header', () => {
        expect(findPinnedLinks().attributes('class')).toContain(borderClass);
      });
    });

    describe('when using incident tabs description wrapper', () => {
      beforeEach(() => {
        mountComponent(
          {
            descriptionComponent: IncidentTabs,
            showTitleBorder: false,
          },
          {
            mocks: {
              $apollo: {
                queries: {
                  alert: {
                    loading: false,
                  },
                },
              },
            },
          },
        );
      });

      it('does not the description component', () => {
        expect(findDescription().exists()).toBe(false);
      });

      it('renders incident tabs', () => {
        expect(findIncidentTabs().exists()).toBe(true);
      });

      it('does not add a border below the header', () => {
        expect(findPinnedLinks().attributes('class')).not.toContain(borderClass);
      });
    });
  });

  describe('taskListUpdateStarted', () => {
    it('stops polling', () => {
      jest.spyOn(wrapper.vm.poll, 'stop');

      wrapper.vm.taskListUpdateStarted();

      expect(wrapper.vm.poll.stop).toHaveBeenCalled();
    });
  });

  describe('taskListUpdateSucceeded', () => {
    it('enables polling', () => {
      jest.spyOn(wrapper.vm.poll, 'enable');
      jest.spyOn(wrapper.vm.poll, 'makeDelayedRequest');

      wrapper.vm.taskListUpdateSucceeded();

      expect(wrapper.vm.poll.enable).toHaveBeenCalled();
      expect(wrapper.vm.poll.makeDelayedRequest).toHaveBeenCalledWith(POLLING_DELAY);
    });
  });

  describe('taskListUpdateFailed', () => {
    it('enables polling and calls updateStoreState', () => {
      jest.spyOn(wrapper.vm.poll, 'enable');
      jest.spyOn(wrapper.vm.poll, 'makeDelayedRequest');
      jest.spyOn(wrapper.vm, 'updateStoreState');

      wrapper.vm.taskListUpdateFailed();

      expect(wrapper.vm.poll.enable).toHaveBeenCalled();
      expect(wrapper.vm.poll.makeDelayedRequest).toHaveBeenCalledWith(POLLING_DELAY);
      expect(wrapper.vm.updateStoreState).toHaveBeenCalled();
    });
  });

  describe('saveDescription event', () => {
    it('makes request to update issue', async () => {
      const description = 'I have been updated!';
      findDescription().vm.$emit('saveDescription', description);
      await waitForPromises();

      expect(mock.history.put[0].data).toContain(description);
    });
  });
});