import Vue, { nextTick } from 'vue';
import { createComponentWithStore } from 'helpers/vue_mount_component_helper';
import ActivityBar from '~/ide/components/activity_bar.vue';
import { leftSidebarViews } from '~/ide/constants';
import { createStore } from '~/ide/stores';

describe('IDE activity bar', () => {
  const Component = Vue.extend(ActivityBar);
  let vm;
  let store;

  const findChangesBadge = () => vm.$el.querySelector('.badge');

  beforeEach(() => {
    store = createStore();

    Vue.set(store.state.projects, 'abcproject', {
      web_url: 'testing',
    });
    Vue.set(store.state, 'currentProjectId', 'abcproject');

    vm = createComponentWithStore(Component, store);
  });

  afterEach(() => {
    vm.$destroy();
  });

  describe('updateActivityBarView', () => {
    beforeEach(() => {
      jest.spyOn(vm, 'updateActivityBarView').mockImplementation(() => {});

      vm.$mount();
    });

    it('calls updateActivityBarView with edit value on click', () => {
      vm.$el.querySelector('.js-ide-edit-mode').click();

      expect(vm.updateActivityBarView).toHaveBeenCalledWith(leftSidebarViews.edit.name);
    });

    it('calls updateActivityBarView with commit value on click', () => {
      vm.$el.querySelector('.js-ide-commit-mode').click();

      expect(vm.updateActivityBarView).toHaveBeenCalledWith(leftSidebarViews.commit.name);
    });

    it('calls updateActivityBarView with review value on click', () => {
      vm.$el.querySelector('.js-ide-review-mode').click();

      expect(vm.updateActivityBarView).toHaveBeenCalledWith(leftSidebarViews.review.name);
    });
  });

  describe('active item', () => {
    beforeEach(() => {
      vm.$mount();
    });

    it('sets edit item active', () => {
      expect(vm.$el.querySelector('.js-ide-edit-mode').classList).toContain('active');
    });

    it('sets commit item active', async () => {
      vm.$store.state.currentActivityView = leftSidebarViews.commit.name;

      await nextTick();
      expect(vm.$el.querySelector('.js-ide-commit-mode').classList).toContain('active');
    });
  });

  describe('changes badge', () => {
    it('is rendered when files are staged', () => {
      store.state.stagedFiles = [{ path: '/path/to/file' }];
      vm.$mount();

      expect(findChangesBadge()).toBeTruthy();
      expect(findChangesBadge().textContent.trim()).toBe('1');
    });

    it('is not rendered when no changes are present', () => {
      vm.$mount();
      expect(findChangesBadge()).toBeFalsy();
    });
  });
});