'use strict';

const { expect } = require('chai');
const { v4 } = require('uuid');
const sinon = require('sinon');
const rewire = require('rewire');

const {
  requestEventMax,
  createdEventMax,
  createdEventInvalidEventId1,
} = require('../xml/event/js-requests');

const { oadrPoll1 } = require('../xml/poll/js-requests');

const { generatedFromNantumEvent1 } = require('../xml/event/js-responses');
const { sampleEvent1 } = require('../modules/nantum-responses');

describe('Event', function() {
  let clock;
  let sandbox, rewired;
  let fetchEventStub;

  after(async () => {
    clock.restore();
  });

  before(async () => {
    clock = sinon.useFakeTimers(new Date('2020-04-26T01:00:00.000Z').getTime());
    sandbox = sinon.createSandbox();

    let registration = {};
    let opted = {};

    fetchEventStub = sandbox.stub().resolves(sampleEvent1);
    rewired = rewire('../../../processes/event.js');
    rewired.__set__({
      nantum: {
        fetchRegistration: () => Promise.resolve(registration),
        fetchEvent: fetchEventStub,
        updateRegistration: async newRegistration => {
          registration = newRegistration;
        },
        fetchOpted: venId => Promise.resolve(opted[venId] || []),
        updateOpted: async (venId, newOpted) => {
          opted[venId] = newOpted || [];
        },
      },
    });
  });

  describe('retrieveEvents', function() {
    it('translates nantum event to oadr event', async () => {
      const venId = requestEventMax.venId;
      const commonName = v4()
        .replace(/-/g, '')
        .substring(0, 12);

      const events = await rewired.retrieveEvents(
        requestEventMax,
        commonName,
        venId,
      );
      expect(events).to.eql(generatedFromNantumEvent1);
    });
  });

  describe('poll and updateOptType', function() {
    it('should return the same event on subsequent polls if it has not been opted', async () => {
      const venId = oadrPoll1.venId;
      const commonName = v4()
        .replace(/-/g, '')
        .substring(0, 12);
      const pollResponse1 = await rewired.pollForEvents(
        oadrPoll1,
        commonName,
        venId,
      );
      expect(pollResponse1.events.length).to.eql(1);
      const pollResponse2 = await rewired.pollForEvents(
        oadrPoll1,
        commonName,
        venId,
      );
      expect(pollResponse2.events.length).to.eql(1);
    });

    it('should not return an opted event in subsequent poll response', async () => {
      const venId = oadrPoll1.venId;
      const commonName = v4()
        .replace(/-/g, '')
        .substring(0, 12);
      const pollResponse1 = await rewired.pollForEvents(
        oadrPoll1,
        commonName,
        venId,
      );
      expect(pollResponse1.events.length).to.eql(1);

      await rewired.updateOptType(createdEventMax, commonName, venId);
      const pollResponse2 = await rewired.pollForEvents(
        oadrPoll1,
        commonName,
        venId,
      );
      expect(pollResponse2).to.be.undefined;
    });

    it('should fail when an invalid eventId is optedIn', async () => {
      const venId = oadrPoll1.venId;
      const commonName = v4()
        .replace(/-/g, '')
        .substring(0, 12);

      const response = await rewired.updateOptType(
        createdEventInvalidEventId1,
        commonName,
        venId,
      );
      expect(response.responseCode).to.eql('454');
      expect(response.responseDescription).to.eql(
        'Event response references invalid event',
      );
    });

    it('should fail when an old modificationNumber is specified', async () => {
      const venId = oadrPoll1.venId;
      const commonName = v4()
        .replace(/-/g, '')
        .substring(0, 12);

      const response = await rewired.updateOptType(
        createdEventInvalidEventId1,
        commonName,
        venId,
      );
      expect(response.responseCode).to.eql('454');
      expect(response.responseDescription).to.eql(
        'Event response references invalid event',
      );
    });
  });
});