import {
  generateUser,
  generateChallenge,
  createAndPopulateGroup,
  translate as t,
} from '../../../../helpers/api-v3-integration.helper';
import { v4 as generateUUID } from 'uuid';

describe('POST /challenges/:challengeId/leave', () => {
  it('returns error when challengeId is not a valid UUID', async () => {
    let user = await generateUser();

    await expect(user.post('/challenges/test/leave')).to.eventually.be.rejected.and.eql({
      code: 400,
      error: 'BadRequest',
      message: t('invalidReqParams'),
    });
  });

  it('returns error when challengeId is not for a valid challenge', async () => {
    let user = await generateUser();

    await expect(user.post(`/challenges/${generateUUID()}/leave`)).to.eventually.be.rejected.and.eql({
      code: 404,
      error: 'NotFound',
      message: t('challengeNotFound'),
    });
  });

  context('Leaving a valid challenge', () => {
    let groupLeader;
    let group;
    let challenge;
    let notInChallengeUser;
    let leavingUser;
    let taskText;

    beforeEach(async () => {
      let populatedGroup = await createAndPopulateGroup({
        members: 2,
      });

      groupLeader = populatedGroup.groupLeader;
      group = populatedGroup.group;
      leavingUser = populatedGroup.members[0];
      notInChallengeUser = populatedGroup.members[1];

      challenge = await generateChallenge(groupLeader, group);

      taskText = 'A challenge task text';

      await groupLeader.post(`/tasks/challenge/${challenge._id}`, [
        {type: 'habit', text: taskText},
      ]);

      await leavingUser.post(`/challenges/${challenge._id}/join`);

      await challenge.sync();
    });

    it('returns an error when user doesn\'t have permissions to view the challenge', async () => {
      let unauthorizedUser = await generateUser();

      await expect(unauthorizedUser.post(`/challenges/${challenge._id}/leave`)).to.eventually.be.rejected.and.eql({
        code: 404,
        error: 'NotFound',
        message: t('challengeNotFound'),
      });
    });

    it('returns an error when user isn\'t a member of the challenge', async () => {
      await expect(notInChallengeUser.post(`/challenges/${challenge._id}/leave`)).to.eventually.be.rejected.and.eql({
        code: 401,
        error: 'NotAuthorized',
        message: t('challengeMemberNotFound'),
      });
    });

    it('removes challenge from user challenges', async () => {
      await leavingUser.post(`/challenges/${challenge._id}/leave`);

      await leavingUser.sync();

      expect(leavingUser).to.have.property('challenges').to.not.include(challenge._id);
    });

    it('decreases memberCount of challenge', async () => {
      let oldMemberCount = challenge.memberCount;

      await leavingUser.post(`/challenges/${challenge._id}/leave`);

      await challenge.sync();

      expect(challenge).to.have.property('memberCount', oldMemberCount - 1);
    });

    it('unlinks challenge tasks from leaving user when remove-all is passed', async () => {
      await leavingUser.post(`/challenges/${challenge._id}/leave`, {
        keep: 'remove-all',
      });
      let tasks = await leavingUser.get('/tasks/user');
      let tasksTexts = tasks.map((task) => {
        return task.text;
      });

      expect(tasksTexts).to.not.include(taskText);
    });

    it('doesn\'t unlink challenge tasks from leaving user when remove-all isn\'t passed', async () => {
      await leavingUser.post(`/challenges/${challenge._id}/leave`, {
        keep: 'test',
      });

      let tasks = await leavingUser.get('/tasks/user');
      let testTask = _.find(tasks, (task) => {
        return task.text === taskText;
      });

      expect(testTask).to.not.be.undefined;
      expect(testTask.challenge).to.eql({});
    });
  });
});