Fall Festival Gem Promo (#138)

* content: add gems blocks

* gemsBlocks: include ios and android identifiers

* wip: promo code

* split common constants into multiple files

* add second promo part

* geCurrentEvent, refactor promo

* fix lint

* fix exports, use world state api

* start adding world state tests

* remove console.log

* use gems block for purchases

* remove comments

* fix most unit tests

* restore comment

* fix lint

* prevent apple/google gift tests from breaking other tests when stub is not reset

* fix unit tests, clarify tests names

* iap: use gift object when gifting gems

* allow gift object with less data

* fix iap tests, remove findById stubs

* iap: require less data from the mobile apps

* apply discounts

* add missing worldState file

* fix lint

* add test event

* start removing 20 gems option for web

* start adding support for all gems packages on web

* fix unit tests for apple, stripe and google

* amazon: support all gems blocks

* paypal: support all gems blocks

* fix payments unit tests, add tests for getGemsBlock

* web: add gems plans with discounts, update stripe

* fix amazon and paypal clients, payments success modals

* amazon pay: disabled state

* update icons, start abstracting payments buttons

* begin redesign

* redesign gems modal

* fix buttons

* fix hover color for gems modal close icon

* add key to world state current event

* extend test event length

* implement gems modals designs

* early test fall2020

* fix header banner position

* add missing files

* use iso 8601 for dates, minor ui fixes

* fix time zones

* events: fix ISO8601 format

* fix css indentation

* start abstracting banners

* refactor payments buttons

* test spooky, fix group plans box

* implement gems promo banners, refactor banners, fixes

* fix lint

* fix dates

* remove unused i18n strings

* fix stripe integration test

* fix world state integration tests

* the current active event

* add missing unit tests

* add storybook story for payments buttons component

* fix typo

* fix(stripe): correct label when gifting subscriptions

test/api/unit/libs/payments/payments.test.js

@@ -1,6 +1,7 @@
 import moment from 'moment';
 
 import * as sender from '../../../../../website/server/libs/email';
+import common from '../../../../../website/common';
 import api from '../../../../../website/server/libs/payments/payments';
 import * as analytics from '../../../../../website/server/libs/analyticsService';
 import * as notifications from '../../../../../website/server/libs/pushNotifications';
@@ -9,6 +10,7 @@ import { translate as t } from '../../../../helpers/api-integration/v3';
 import {
   generateGroup,
 } from '../../../../helpers/api-unit.helper';
+import * as worldState from '../../../../../website/server/libs/worldState';
 
 describe('payments/index', () => {
   let user; let group; let data; let
@@ -555,6 +557,7 @@ describe('payments/index', () => {
     beforeEach(() => {
       data = {
         user,
+        gemsBlock: common.content.gems['21gems'],
         paymentMethod: 'payment',
         headers: {
           'x-client': 'habitica-web',
@@ -564,22 +567,6 @@ describe('payments/index', () => {
     });
 
     context('Self Purchase', () => {
-      it('amount property defaults to 5', async () => {
-        expect(user.balance).to.eql(0);
-
-        await api.buyGems(data);
-
-        expect(user.balance).to.eql(5);
-      });
-
-      it('can set amount that is purchased', async () => {
-        data.amount = 13;
-
-        await api.buyGems(data);
-
-        expect(user.balance).to.eql(13);
-      });
-
       it('sends a donation email', async () => {
         await api.buyGems(data);
 
@@ -588,6 +575,51 @@ describe('payments/index', () => {
       });
     });
 
+    context('No Active Promotion', () => {
+      beforeEach(() => {
+        sinon.stub(worldState, 'getCurrentEvent').returns(null);
+      });
+
+      afterEach(() => {
+        worldState.getCurrentEvent.restore();
+      });
+
+      it('does not apply a discount', async () => {
+        const balanceBefore = user.balance;
+
+        await api.buyGems(data);
+
+        const balanceAfter = user.balance;
+        const balanceDiff = balanceAfter - balanceBefore;
+
+        expect(balanceDiff * 4).to.eql(21);
+      });
+    });
+
+    context('Active Promotion', () => {
+      beforeEach(() => {
+        sinon.stub(worldState, 'getCurrentEvent').returns({
+          ...common.content.events.fall2020,
+          event: 'fall2020',
+        });
+      });
+
+      afterEach(() => {
+        worldState.getCurrentEvent.restore();
+      });
+
+      it('applies a discount', async () => {
+        const balanceBefore = user.balance;
+
+        await api.buyGems(data);
+
+        const balanceAfter = user.balance;
+        const balanceDiff = balanceAfter - balanceBefore;
+
+        expect(balanceDiff * 4).to.eql(30);
+      });
+    });
+
     context('Gift', () => {
       let recipient;