/* eslint-disable camelcase */

import sinon from 'sinon'; // eslint-disable-line no-shadow
import {
  generateUser,
} from '../../../helpers/common.helper';
import {
  BadRequest, NotAuthorized,
} from '../../../../website/common/script/libs/errors';
import i18n from '../../../../website/common/script/i18n';
import {BuyGemOperation} from '../../../../website/common/script/ops/buy/buyGem';
import planGemLimits from '../../../../website/common/script/libs/planGemLimits';

function buyGem (user, req, analytics) {
  let buyOp = new BuyGemOperation(user, req, analytics);

  return buyOp.purchase();
}

describe('shared.ops.buyGem', () => {
  let user;
  let analytics = {track () {}};
  let goldPoints = 40;
  let gemsBought = 40;
  let userGemAmount = 10;

  beforeEach(() => {
    user = generateUser({
      stats: { gp: goldPoints },
      balance: userGemAmount,
      purchased: {
        plan: {
          gemsBought: 0,
          customerId: 'costumer-id',
        },
      },
    });

    sinon.stub(analytics, 'track');
  });

  afterEach(() => {
    analytics.track.restore();
  });

  context('Gems', () => {
    it('purchases gems', () => {
      let [, message] = buyGem(user, {params: {type: 'gems', key: 'gem'}}, analytics);

      expect(message).to.equal(i18n.t('plusGem', {count: 1}));
      expect(user.balance).to.equal(userGemAmount + 0.25);
      expect(user.purchased.plan.gemsBought).to.equal(1);
      expect(user.stats.gp).to.equal(goldPoints - planGemLimits.convRate);
      expect(analytics.track).to.be.calledOnce;
    });

    it('purchases gems with a different language than the default', () => {
      let [, message] = buyGem(user, {params: {type: 'gems', key: 'gem'}, language: 'de'});

      expect(message).to.equal(i18n.t('plusGem', {count: 1}, 'de'));
      expect(user.balance).to.equal(userGemAmount + 0.25);
      expect(user.purchased.plan.gemsBought).to.equal(1);
      expect(user.stats.gp).to.equal(goldPoints - planGemLimits.convRate);
    });

    it('makes bulk purchases of gems', () => {
      let [, message] = buyGem(user, {
        params: {type: 'gems', key: 'gem'},
        quantity: 2,
      });

      expect(message).to.equal(i18n.t('plusGem', {count: 2}));
      expect(user.balance).to.equal(userGemAmount + 0.50);
      expect(user.purchased.plan.gemsBought).to.equal(2);
      expect(user.stats.gp).to.equal(goldPoints - planGemLimits.convRate * 2);
    });


    context('Failure conditions', () => {
      it('returns an error when key is not provided', (done) => {
        try {
          buyGem(user, {params: {type: 'gems'}});
        } catch (err) {
          expect(err).to.be.an.instanceof(BadRequest);
          expect(err.message).to.equal(i18n.t('missingKeyParam'));
          done();
        }
      });

      it('prevents unsubscribed user from buying gems', (done) => {
        delete user.purchased.plan.customerId;

        try {
          buyGem(user, {params: {type: 'gems', key: 'gem'}});
        } catch (err) {
          expect(err).to.be.an.instanceof(NotAuthorized);
          expect(err.message).to.equal(i18n.t('mustSubscribeToPurchaseGems'));
          done();
        }
      });

      it('prevents user with not enough gold from buying gems', (done) => {
        user.stats.gp = 15;

        try {
          buyGem(user, {params: {type: 'gems', key: 'gem'}});
        } catch (err) {
          expect(err).to.be.an.instanceof(NotAuthorized);
          expect(err.message).to.equal(i18n.t('messageNotEnoughGold'));
          done();
        }
      });

      it('prevents user that have reached the conversion cap from buying gems', (done) => {
        user.stats.gp = goldPoints;
        user.purchased.plan.gemsBought = gemsBought;

        try {
          buyGem(user, {params: {type: 'gems', key: 'gem'}});
        } catch (err) {
          expect(err).to.be.an.instanceof(NotAuthorized);
          expect(err.message).to.equal(i18n.t('reachedGoldToGemCap', {convCap: planGemLimits.convCap}));
          done();
        }
      });

      it('prevents user from buying an invalid quantity', (done) => {
        user.stats.gp = goldPoints;
        user.purchased.plan.gemsBought = gemsBought;

        try {
          buyGem(user, {params: {type: 'gems', key: 'gem'}, quantity: 'a'});
        } catch (err) {
          expect(err).to.be.an.instanceof(BadRequest);
          expect(err.message).to.equal(i18n.t('invalidQuantity'));
          done();
        }
      });
    });
  });
});