import { shallowMount, createLocalVue } from '@vue/test-utils';
import createStore from '~/notes/stores';
import noteableDiscussion from '~/notes/components/noteable_discussion.vue';
import ReplyPlaceholder from '~/notes/components/discussion_reply_placeholder.vue';
import '~/behaviors/markdown/render_gfm';
import { noteableDataMock, discussionMock, notesDataMock } from '../mock_data';
import mockDiffFile from '../../diffs/mock_data/diff_file';

const discussionWithTwoUnresolvedNotes = 'merge_requests/resolved_diff_discussion.json';

describe('noteable_discussion component', () => {
  let store;
  let wrapper;

  preloadFixtures(discussionWithTwoUnresolvedNotes);

  beforeEach(() => {
    window.mrTabs = {};
    store = createStore();
    store.dispatch('setNoteableData', noteableDataMock);
    store.dispatch('setNotesData', notesDataMock);

    const localVue = createLocalVue();
    wrapper = shallowMount(noteableDiscussion, {
      store,
      propsData: { discussion: discussionMock },
      localVue,
      sync: false,
    });
  });

  afterEach(() => {
    wrapper.destroy();
  });

  it('should render user avatar', () => {
    expect(wrapper.find('.user-avatar-link').exists()).toBe(true);
  });

  it('should not render discussion header for non diff discussions', () => {
    expect(wrapper.find('.discussion-header').exists()).toBe(false);
  });

  it('should render discussion header', done => {
    const discussion = { ...discussionMock };
    discussion.diff_file = mockDiffFile;
    discussion.diff_discussion = true;

    wrapper.setProps({ discussion });

    wrapper.vm
      .$nextTick()
      .then(() => {
        expect(wrapper.find('.discussion-header').exists()).toBe(true);
      })
      .then(done)
      .catch(done.fail);
  });

  describe('actions', () => {
    it('should toggle reply form', done => {
      const replyPlaceholder = wrapper.find(ReplyPlaceholder);

      wrapper.vm
        .$nextTick()
        .then(() => {
          expect(wrapper.vm.isReplying).toEqual(false);

          replyPlaceholder.vm.$emit('onClick');
        })
        .then(() => wrapper.vm.$nextTick())
        .then(() => {
          expect(wrapper.vm.isReplying).toEqual(true);
          expect(wrapper.vm.$refs.noteForm).not.toBeNull();
        })
        .then(done)
        .catch(done.fail);
    });

    it('does not render jump to discussion button', () => {
      expect(
        wrapper.find('*[data-original-title="Jump to next unresolved discussion"]').exists(),
      ).toBe(false);
    });
  });

  describe('methods', () => {
    describe('jumpToNextDiscussion', () => {
      it('expands next unresolved discussion', done => {
        const discussion2 = getJSONFixture(discussionWithTwoUnresolvedNotes)[0];
        discussion2.resolved = false;
        discussion2.active = true;
        discussion2.id = 'next'; // prepare this for being identified as next one (to be jumped to)
        store.dispatch('setInitialNotes', [discussionMock, discussion2]);
        window.mrTabs.currentAction = 'show';

        wrapper.vm
          .$nextTick()
          .then(() => {
            spyOn(wrapper.vm, 'expandDiscussion').and.stub();

            const nextDiscussionId = discussion2.id;

            setFixtures(`
              <div class="discussion" data-discussion-id="${nextDiscussionId}"></div>
            `);

            wrapper.vm.jumpToNextDiscussion();

            expect(wrapper.vm.expandDiscussion).toHaveBeenCalledWith({
              discussionId: nextDiscussionId,
            });
          })
          .then(done)
          .catch(done.fail);
      });
    });
  });

  describe('componentData', () => {
    it('should return first note object for placeholder note', () => {
      const data = {
        isPlaceholderNote: true,
        notes: [{ body: 'hello world!' }],
      };

      const note = wrapper.vm.componentData(data);

      expect(note).toEqual(data.notes[0]);
    });

    it('should return given note for nonplaceholder notes', () => {
      const data = {
        notes: [{ id: 12 }],
      };

      const note = wrapper.vm.componentData(data);

      expect(note).toEqual(data);
    });
  });

  describe('action text', () => {
    const commitId = 'razupaltuff';
    const truncatedCommitId = commitId.substr(0, 8);
    let commitElement;

    beforeEach(done => {
      store.state.diffs = {
        projectPath: 'something',
      };

      wrapper.setProps({
        discussion: {
          ...discussionMock,
          for_commit: true,
          commit_id: commitId,
          diff_discussion: true,
          diff_file: {
            ...mockDiffFile,
          },
        },
        renderDiffFile: true,
      });

      wrapper.vm
        .$nextTick()
        .then(() => {
          commitElement = wrapper.find('.commit-sha');
        })
        .then(done)
        .catch(done.fail);
    });

    describe('for commit discussions', () => {
      it('should display a monospace started a discussion on commit', () => {
        expect(wrapper.text()).toContain(`started a discussion on commit ${truncatedCommitId}`);
        expect(commitElement.exists()).toBe(true);
        expect(commitElement.text()).toContain(truncatedCommitId);
      });
    });

    describe('for diff discussion with a commit id', () => {
      it('should display started discussion on commit header', done => {
        wrapper.vm.discussion.for_commit = false;

        wrapper.vm.$nextTick(() => {
          expect(wrapper.text()).toContain(`started a discussion on commit ${truncatedCommitId}`);

          expect(commitElement).not.toBe(null);

          done();
        });
      });

      it('should display outdated change on commit header', done => {
        wrapper.vm.discussion.for_commit = false;
        wrapper.vm.discussion.active = false;

        wrapper.vm.$nextTick(() => {
          expect(wrapper.text()).toContain(
            `started a discussion on an outdated change in commit ${truncatedCommitId}`,
          );

          expect(commitElement).not.toBe(null);

          done();
        });
      });
    });

    describe('for diff discussions without a commit id', () => {
      it('should show started a discussion on the diff text', done => {
        Object.assign(wrapper.vm.discussion, {
          for_commit: false,
          commit_id: null,
        });

        wrapper.vm.$nextTick(() => {
          expect(wrapper.text()).toContain('started a discussion on the diff');

          done();
        });
      });

      it('should show discussion on older version text', done => {
        Object.assign(wrapper.vm.discussion, {
          for_commit: false,
          commit_id: null,
          active: false,
        });

        wrapper.vm.$nextTick(() => {
          expect(wrapper.text()).toContain('started a discussion on an old version of the diff');

          done();
        });
      });
    });
  });
});