'use strict';

const { readFileSync } = require('fs');
const path = require('path');
const { expect } = require('chai');
const sinon = require('sinon');

const { Ven } = require('../../client/ven');
const app = require('../../server');
const { sequelize, Ven: VenDb } = require('../../db');
const { port } = require('../../config');

describe('VEN registration', function() {

  describe('successful registration and event retrieval', async function() {

    let clock;

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

    let ven;

    before(async () => {
      clock = sinon.useFakeTimers(new Date('2020-04-26T01:00:00.000Z').getTime());
      await sequelize.sync();
      await VenDb.destroy({ truncate : true});
      await app.start();
      const clientCrtPem = readFileSync(path.join(__dirname, 'integration-client.crt'), 'utf-8');
      ven = new Ven(`http://127.0.0.1:${port}`, clientCrtPem, 'aabbccddeeff', '17:32:59:FD:0E:B5:99:31:27:9C', 'ven.js1');
    });

    it('should successfully return a vtnId from queryRegistration', async () => {
      const queryResponse = await ven.queryRegistration();
      expect(queryResponse.vtnId).to.be.a('string');
    });

    it('should successfully register and receive a vtnId and registrationId', async () => {
      const registrationResponse = await ven.register();
      expect(registrationResponse.vtnId).to.be.a('string');
      expect(registrationResponse.registrationId).to.be.a('string');
    });

    it('should successfully return a registrationId and venId from queryRegistration', async () => {
      const queryResponse = await ven.queryRegistration();
      expect(queryResponse.vtnId).to.be.a('string');
      expect(queryResponse.registrationId).to.be.a('string');
      expect(queryResponse.venId).to.be.a('string');
    });

    it('should return an event from requestEvents', async () => {
      const eventResponse = await ven.requestEvents();
      expect(eventResponse.events.length).to.eql(1);
      expect(eventResponse.vtnId).to.be.a('string');
    });

    it('should successfully cancel that registration', async () => {
      const cancelResponse = await ven.cancelRegistration();
      expect(cancelResponse.registrationId).to.be.a('string');
      expect(cancelResponse.venId).to.be.a('string');
    });

    after(async () => {
      await app.stop();
    });

  });

  describe('successful poll', async function() {
    let ven;

    let clock;

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

    before(async () => {
      clock = sinon.useFakeTimers(new Date('2020-04-26T01:00:00.000Z').getTime());
      await sequelize.sync();
      await VenDb.destroy({ truncate : true});
      await app.start();
      const clientCrtPem = readFileSync(path.join(__dirname, 'integration-client.crt'), 'utf-8');
      ven = new Ven(`http://127.0.0.1:${port}`, clientCrtPem, 'aabbccddeeff', '17:32:59:FD:0E:B5:99:31:27:9C', 'ven.js1');
      await ven.register();
    });

    it('should successfully poll for events', async () => {
      const pollResponse = await ven.poll();
      expect(pollResponse._type).to.eql('oadrDistributeEvent');
      expect(pollResponse.events.length).to.eql(1);
    });

    after(async () => {
      await app.stop();
    });

  });

  describe('successful optIn', async function() {

    let clock;

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

    let ven, events, pollResponse;

    before(async () => {
      clock = sinon.useFakeTimers(new Date('2020-04-26T01:00:00.000Z').getTime());
      await sequelize.sync();
      await VenDb.destroy({ truncate : true});
      await app.start();
      const clientCrtPem = readFileSync(path.join(__dirname, 'integration-client.crt'), 'utf-8');
      ven = new Ven(`http://127.0.0.1:${port}`, clientCrtPem, 'aabbccddeeff', '17:32:59:FD:0E:B5:99:31:27:9C', 'ven.js1');
      await ven.register();
      pollResponse = await ven.poll();
      events = pollResponse.events;
    });

    it('should successfully poll for events', async () => {
      expect(pollResponse._type).to.eql('oadrDistributeEvent');
      expect(pollResponse.events.length).to.eql(1);
    });

    it('should return same events if not opted', async () => {
      const pollResponse = await ven.poll();
      expect(pollResponse._type).to.eql('oadrDistributeEvent');
      expect(pollResponse.events.length).to.eql(1);
    });

    it('should return no events if opted', async () => {
      const eventId = events[0].eventDescriptor.eventId;
      const modificationNumber = events[0].eventDescriptor.modificationNumber;
      await ven.opt('optIn', eventId, modificationNumber);

      const pollResponse = await ven.poll();
      expect(pollResponse._type).to.eql('oadrResponse');
    });

    after(async () => {
      await app.stop();
    });

  });
});