Purchase API Refactoring: Health Potion (#10152)

* convert buyHealthPotion

* fix health potion tests

* fix lint

website/common/script/ops/buy/buy.js

@@ -3,7 +3,7 @@ import get from 'lodash/get';
 import {
   BadRequest,
 } from '../../libs/errors';
-import buyHealthPotion from './buyHealthPotion';
+import {BuyHealthPotionOperation} from './buyHealthPotion';
 import buyArmoire from './buyArmoire';
 import {BuyMarketGearOperation} from './buyMarketGear';
 import buyMysterySet from './buyMysterySet';
@@ -36,9 +36,12 @@ module.exports = function buy (user, req = {}, analytics) {
     case 'mystery':
       buyRes = buyMysterySet(user, req, analytics);
       break;
-    case 'potion':
-      buyRes = buyHealthPotion(user, req, analytics);
+    case 'potion': {
+      const buyOp = new BuyHealthPotionOperation(user, req, analytics);
+
+      buyRes = buyOp.purchase();
       break;
+    }
     case 'eggs':
     case 'hatchingPotions':
     case 'food':

website/common/script/ops/buy/buyHealthPotion.js

@@ -1,55 +1,55 @@
 import content from '../../content/index';
-import i18n from '../../i18n';
 import {
   NotAuthorized,
 } from '../../libs/errors';
 
-module.exports = function buyHealthPotion (user, req = {}, analytics) {
-  let item = content.potion;
-  let quantity = req.quantity || 1;
+import { AbstractGoldItemOperation} from './abstractBuyOperation';
 
-  if (user.stats.gp < item.value * quantity) {
-    throw new NotAuthorized(i18n.t('messageNotEnoughGold', req.language));
+export class BuyHealthPotionOperation extends AbstractGoldItemOperation {
+  constructor (user, req, analytics) {
+    super(user, req, analytics);
   }
 
-  if (item.canOwn && !item.canOwn(user)) {
-    throw new NotAuthorized(i18n.t('cannotBuyItem', req.language));
+  multiplePurchaseAllowed () {
+    return true;
   }
 
-  if (user.stats.hp >= 50) {
-    throw new NotAuthorized(i18n.t('messageHealthAlreadyMax', req.language));
+  extractAndValidateParams (user) {
+    let item = content.potion;
+    let userHp = user.stats.hp;
+
+    super.canUserPurchase(user, item);
+
+    if (userHp >= 50) {
+      throw new NotAuthorized(this.i18n('messageHealthAlreadyMax'));
+    }
+
+    if (userHp <= 0) {
+      throw new NotAuthorized(this.i18n('messageHealthAlreadyMin'));
+    }
   }
 
-  if (user.stats.hp <= 0) {
-    throw new NotAuthorized(i18n.t('messageHealthAlreadyMin', req.language));
-  }
+  executeChanges (user, item) {
+    user.stats.hp += 15 * this.quantity;
+    if (user.stats.hp > 50) {
+      user.stats.hp = 50;
+    }
 
-  user.stats.hp += 15 * quantity;
-  if (user.stats.hp > 50) {
-    user.stats.hp = 50;
-  }
+    this.substractCurrency(user, item, this.quantity);
 
-  user.stats.gp -= item.value * quantity;
-
-  let message = i18n.t('messageBought', {
-    itemText: item.text(req.language),
-  }, req.language);
-
-
-  if (analytics) {
-    analytics.track('acquire item', {
-      uuid: user._id,
-      itemKey: 'Potion',
-      acquireMethod: 'Gold',
-      goldCost: item.value,
-      category: 'behavior',
-      headers: req.headers,
-      quantityPurchased: quantity,
+    let message = this.i18n('messageBought', {
+      itemText: this.item.text(this.req.language),
     });
+
+    return [
+      this.user.stats,
+      message,
+    ];
   }
 
-  return [
-    user.stats,
-    message,
-  ];
-};
+  analyticsData () {
+    let data = super.analyticsData();
+    data.itemKey = 'Potion';
+    return data;
+  }
+}