import { GlDropdown, GlDropdownItem, GlDatepicker, GlSprintf, GlLink, GlModal } from '@gitlab/ui';
import { shallowMount } from '@vue/test-utils';
import { stubComponent } from 'helpers/stub_component';
import waitForPromises from 'helpers/wait_for_promises';
import Api from '~/api';
import ExperimentTracking from '~/experimentation/experiment_tracking';
import InviteMembersModal from '~/invite_members/components/invite_members_modal.vue';
import { INVITE_MEMBERS_IN_COMMENT } from '~/invite_members/constants';

jest.mock('~/experimentation/experiment_tracking');

const id = '1';
const name = 'test name';
const isProject = false;
const inviteeType = 'members';
const accessLevels = { Guest: 10, Reporter: 20, Developer: 30, Maintainer: 40, Owner: 50 };
const defaultAccessLevel = 10;
const helpLink = 'https://example.com';

const user1 = { id: 1, name: 'Name One', username: 'one_1', avatar_url: '' };
const user2 = { id: 2, name: 'Name Two', username: 'one_2', avatar_url: '' };
const user3 = {
  id: 'user-defined-token',
  name: 'email@example.com',
  username: 'one_2',
  avatar_url: '',
};
const sharedGroup = { id: '981' };

const createComponent = (data = {}, props = {}) => {
  return shallowMount(InviteMembersModal, {
    propsData: {
      id,
      name,
      isProject,
      inviteeType,
      accessLevels,
      defaultAccessLevel,
      helpLink,
      ...props,
    },
    data() {
      return data;
    },
    stubs: {
      GlModal: stubComponent(GlModal, {
        template:
          '<div><slot name="modal-title"></slot><slot></slot><slot name="modal-footer"></slot></div>',
      }),
      GlDropdown: true,
      GlDropdownItem: true,
      GlSprintf,
    },
  });
};

const createInviteMembersToProjectWrapper = () => {
  return createComponent({ inviteeType: 'members' }, { isProject: true });
};

const createInviteMembersToGroupWrapper = () => {
  return createComponent({ inviteeType: 'members' }, { isProject: false });
};

const createInviteGroupToProjectWrapper = () => {
  return createComponent({ inviteeType: 'group' }, { isProject: true });
};

const createInviteGroupToGroupWrapper = () => {
  return createComponent({ inviteeType: 'group' }, { isProject: false });
};

describe('InviteMembersModal', () => {
  let wrapper;

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

  const findDropdown = () => wrapper.findComponent(GlDropdown);
  const findDropdownItems = () => findDropdown().findAllComponents(GlDropdownItem);
  const findDatepicker = () => wrapper.findComponent(GlDatepicker);
  const findLink = () => wrapper.findComponent(GlLink);
  const findIntroText = () => wrapper.find({ ref: 'introText' }).text();
  const findCancelButton = () => wrapper.findComponent({ ref: 'cancelButton' });
  const findInviteButton = () => wrapper.findComponent({ ref: 'inviteButton' });
  const clickInviteButton = () => findInviteButton().vm.$emit('click');

  describe('rendering the modal', () => {
    beforeEach(() => {
      wrapper = createComponent();
    });

    it('renders the modal with the correct title', () => {
      expect(wrapper.findComponent(GlModal).props('title')).toBe('Invite members');
    });

    it('renders the Cancel button text correctly', () => {
      expect(findCancelButton().text()).toBe('Cancel');
    });

    it('renders the Invite button text correctly', () => {
      expect(findInviteButton().text()).toBe('Invite');
    });

    describe('rendering the access levels dropdown', () => {
      it('sets the default dropdown text to the default access level name', () => {
        expect(findDropdown().attributes('text')).toBe('Guest');
      });

      it('renders dropdown items for each accessLevel', () => {
        expect(findDropdownItems()).toHaveLength(5);
      });
    });

    describe('rendering the help link', () => {
      it('renders the correct link', () => {
        expect(findLink().attributes('href')).toBe(helpLink);
      });
    });

    describe('rendering the access expiration date field', () => {
      it('renders the datepicker', () => {
        expect(findDatepicker()).toExist();
      });
    });
  });

  describe('displaying the correct introText', () => {
    describe('when inviting to a project', () => {
      describe('when inviting members', () => {
        it('includes the correct invitee, type, and formatted name', () => {
          wrapper = createInviteMembersToProjectWrapper();

          expect(findIntroText()).toBe("You're inviting members to the test name project.");
        });
      });

      describe('when sharing with a group', () => {
        it('includes the correct invitee, type, and formatted name', () => {
          wrapper = createInviteGroupToProjectWrapper();

          expect(findIntroText()).toBe("You're inviting a group to the test name project.");
        });
      });
    });

    describe('when inviting to a group', () => {
      describe('when inviting members', () => {
        it('includes the correct invitee, type, and formatted name', () => {
          wrapper = createInviteMembersToGroupWrapper();

          expect(findIntroText()).toBe("You're inviting members to the test name group.");
        });
      });

      describe('when sharing with a group', () => {
        it('includes the correct invitee, type, and formatted name', () => {
          wrapper = createInviteGroupToGroupWrapper();

          expect(findIntroText()).toBe("You're inviting a group to the test name group.");
        });
      });
    });
  });

  describe('submitting the invite form', () => {
    const apiErrorMessage = 'Member already exists';

    describe('when inviting an existing user to group by user ID', () => {
      const postData = {
        user_id: '1',
        access_level: defaultAccessLevel,
        expires_at: undefined,
        format: 'json',
      };

      describe('when invites are sent successfully', () => {
        beforeEach(() => {
          wrapper = createInviteMembersToGroupWrapper();

          wrapper.setData({ newUsersToInvite: [user1] });
          wrapper.vm.$toast = { show: jest.fn() };
          jest.spyOn(Api, 'addGroupMembersByUserId').mockResolvedValue({ data: postData });
          jest.spyOn(wrapper.vm, 'showToastMessageSuccess');

          clickInviteButton();
        });

        it('calls Api addGroupMembersByUserId with the correct params', () => {
          expect(Api.addGroupMembersByUserId).toHaveBeenCalledWith(id, postData);
        });

        it('displays the successful toastMessage', () => {
          expect(wrapper.vm.showToastMessageSuccess).toHaveBeenCalled();
        });
      });

      describe('when the invite received an api error message', () => {
        beforeEach(() => {
          wrapper = createComponent({ newUsersToInvite: [user1] });

          wrapper.vm.$toast = { show: jest.fn() };
          jest
            .spyOn(Api, 'addGroupMembersByUserId')
            .mockRejectedValue({ response: { data: { message: apiErrorMessage } } });
          jest.spyOn(wrapper.vm, 'showToastMessageError');

          clickInviteButton();
        });

        it('displays the apiErrorMessage in the toastMessage', async () => {
          await waitForPromises();

          expect(wrapper.vm.showToastMessageError).toHaveBeenCalledWith({
            response: { data: { message: apiErrorMessage } },
          });
        });
      });

      describe('when any invite failed for any other reason', () => {
        beforeEach(() => {
          wrapper = createComponent({ newUsersToInvite: [user1, user2] });

          wrapper.vm.$toast = { show: jest.fn() };
          jest
            .spyOn(Api, 'addGroupMembersByUserId')
            .mockRejectedValue({ response: { data: { success: false } } });
          jest.spyOn(wrapper.vm, 'showToastMessageError');

          clickInviteButton();
        });

        it('displays the generic error toastMessage', async () => {
          await waitForPromises();

          expect(wrapper.vm.showToastMessageError).toHaveBeenCalled();
        });
      });
    });

    describe('when inviting a new user by email address', () => {
      const postData = {
        access_level: defaultAccessLevel,
        expires_at: undefined,
        email: 'email@example.com',
        format: 'json',
      };

      describe('when invites are sent successfully', () => {
        beforeEach(() => {
          wrapper = createComponent({ newUsersToInvite: [user3] });

          wrapper.vm.$toast = { show: jest.fn() };
          jest.spyOn(Api, 'inviteGroupMembersByEmail').mockResolvedValue({ data: postData });
          jest.spyOn(wrapper.vm, 'showToastMessageSuccess');

          clickInviteButton();
        });

        it('calls Api inviteGroupMembersByEmail with the correct params', () => {
          expect(Api.inviteGroupMembersByEmail).toHaveBeenCalledWith(id, postData);
        });

        it('displays the successful toastMessage', () => {
          expect(wrapper.vm.showToastMessageSuccess).toHaveBeenCalled();
        });
      });

      describe('when any invite failed for any reason', () => {
        beforeEach(() => {
          wrapper = createComponent({ newUsersToInvite: [user1, user2] });

          wrapper.vm.$toast = { show: jest.fn() };
          jest
            .spyOn(Api, 'addGroupMembersByUserId')
            .mockRejectedValue({ response: { data: { success: false } } });
          jest.spyOn(wrapper.vm, 'showToastMessageError');

          clickInviteButton();
        });

        it('displays the generic error toastMessage', async () => {
          await waitForPromises();

          expect(wrapper.vm.showToastMessageError).toHaveBeenCalled();
        });
      });
    });

    describe('when inviting members and non-members in same click', () => {
      const postData = {
        access_level: defaultAccessLevel,
        expires_at: undefined,
        format: 'json',
      };

      const emailPostData = { ...postData, email: 'email@example.com' };
      const idPostData = { ...postData, user_id: '1' };

      describe('when invites are sent successfully', () => {
        beforeEach(() => {
          wrapper = createComponent({ newUsersToInvite: [user1, user3] });

          wrapper.vm.$toast = { show: jest.fn() };
          jest.spyOn(Api, 'inviteGroupMembersByEmail').mockResolvedValue({ data: postData });
          jest.spyOn(Api, 'addGroupMembersByUserId').mockResolvedValue({ data: postData });
          jest.spyOn(wrapper.vm, 'showToastMessageSuccess');
          jest.spyOn(wrapper.vm, 'trackInvite');

          clickInviteButton();
        });

        it('calls Api inviteGroupMembersByEmail with the correct params', () => {
          expect(Api.inviteGroupMembersByEmail).toHaveBeenCalledWith(id, emailPostData);
        });

        it('calls Api addGroupMembersByUserId with the correct params', () => {
          expect(Api.addGroupMembersByUserId).toHaveBeenCalledWith(id, idPostData);
        });

        it('displays the successful toastMessage', () => {
          expect(wrapper.vm.showToastMessageSuccess).toHaveBeenCalled();
        });
      });

      describe('when any invite failed for any reason', () => {
        beforeEach(() => {
          wrapper = createComponent({ newUsersToInvite: [user1, user3] });

          wrapper.vm.$toast = { show: jest.fn() };

          jest
            .spyOn(Api, 'inviteGroupMembersByEmail')
            .mockRejectedValue({ response: { data: { success: false } } });

          jest.spyOn(Api, 'addGroupMembersByUserId').mockResolvedValue({ data: postData });
          jest.spyOn(wrapper.vm, 'showToastMessageError');

          clickInviteButton();
        });

        it('displays the generic error toastMessage', async () => {
          await waitForPromises();

          expect(wrapper.vm.showToastMessageError).toHaveBeenCalled();
        });
      });
    });

    describe('when inviting a group to share', () => {
      describe('when sharing the group is successful', () => {
        const groupPostData = {
          group_id: sharedGroup.id,
          group_access: defaultAccessLevel,
          expires_at: undefined,
          format: 'json',
        };

        beforeEach(() => {
          wrapper = createComponent({ groupToBeSharedWith: sharedGroup });

          wrapper.setData({ inviteeType: 'group' });
          wrapper.vm.$toast = { show: jest.fn() };
          jest.spyOn(Api, 'groupShareWithGroup').mockResolvedValue({ data: groupPostData });
          jest.spyOn(wrapper.vm, 'showToastMessageSuccess');

          clickInviteButton();
        });

        it('calls Api groupShareWithGroup with the correct params', () => {
          expect(Api.groupShareWithGroup).toHaveBeenCalledWith(id, groupPostData);
        });

        it('displays the successful toastMessage', () => {
          expect(wrapper.vm.showToastMessageSuccess).toHaveBeenCalled();
        });
      });

      describe('when sharing the group fails', () => {
        beforeEach(() => {
          wrapper = createComponent({ groupToBeSharedWith: sharedGroup });

          wrapper.setData({ inviteeType: 'group' });
          wrapper.vm.$toast = { show: jest.fn() };

          jest
            .spyOn(Api, 'groupShareWithGroup')
            .mockRejectedValue({ response: { data: { success: false } } });

          jest.spyOn(wrapper.vm, 'showToastMessageError');

          clickInviteButton();
        });

        it('displays the generic error toastMessage', async () => {
          await waitForPromises();

          expect(wrapper.vm.showToastMessageError).toHaveBeenCalled();
        });
      });
    });

    describe('tracking', () => {
      const postData = {
        user_id: '1',
        access_level: defaultAccessLevel,
        expires_at: undefined,
        format: 'json',
      };

      beforeEach(() => {
        wrapper = createComponent({ newUsersToInvite: [user3] });

        wrapper.vm.$toast = { show: jest.fn() };
        jest.spyOn(Api, 'inviteGroupMembersByEmail').mockResolvedValue({ data: postData });
      });

      it('tracks the invite', () => {
        wrapper.vm.openModal({ inviteeType: 'members', source: INVITE_MEMBERS_IN_COMMENT });

        clickInviteButton();

        expect(ExperimentTracking).toHaveBeenCalledWith(INVITE_MEMBERS_IN_COMMENT);
        expect(ExperimentTracking.prototype.event).toHaveBeenCalledWith('comment_invite_success');
      });

      it('does not track invite for unknown source', () => {
        wrapper.vm.openModal({ inviteeType: 'members', source: 'unknown' });

        clickInviteButton();

        expect(ExperimentTracking).not.toHaveBeenCalled();
      });

      it('does not track invite undefined source', () => {
        wrapper.vm.openModal({ inviteeType: 'members' });

        clickInviteButton();

        expect(ExperimentTracking).not.toHaveBeenCalled();
      });
    });
  });
});