Created a discount system related to the user's e-mail address and applied to the packages

src/interfaces/paypal.ts

@@ -1,50 +1,55 @@
 export interface TokenSuccess {
-	scope: string;
-	access_token: string;
-	token_type: string;
-	app_id: string;
-	expires_in: number;
-	nonce: string;
+  scope: string;
+  access_token: string;
+  token_type: string;
+  app_id: string;
+  expires_in: number;
+  nonce: string;
 }
 
 export interface TokenError {
-	error: string;
-	error_description: string;
+  error: string;
+  error_description: string;
 }
 
 export interface Package {
-	id: string;
-	currency: string;
-	duration: number;
-	duration_unit: DurationUnit;
-	price: number;
+  id: string;
+  currency: string;
+  duration: number;
+  duration_unit: DurationUnit;
+  price: number;
+}
+
+export interface Discount {
+  id: string;
+  percentage: number;
+  domain: string;
 }
 
 export type DurationUnit = "weeks" | "days" | "months" | "years";
 
 export interface Payment {
-	id: string;
-	corporate: string;
-	agent?: string;
-	agentCommission: number;
-	agentValue: number;
-	currency: string;
-	value: number;
-	isPaid: boolean;
-	date: Date | string;
-	corporateTransfer?: string;
-	commissionTransfer?: string;
+  id: string;
+  corporate: string;
+  agent?: string;
+  agentCommission: number;
+  agentValue: number;
+  currency: string;
+  value: number;
+  isPaid: boolean;
+  date: Date | string;
+  corporateTransfer?: string;
+  commissionTransfer?: string;
 }
 
-
 export interface PaypalPayment {
-	orderId: string;
-	userId: string;
-	status: string;
-	createdAt: Date;
-	value: number;
-	currency: string;
-	subscriptionDuration: number;
-	subscriptionDurationUnit: DurationUnit;
-	subscriptionExpirationDate: Date;
-}
+  orderId: string;
+  userId: string;
+  status: string;
+  createdAt: Date;
+  value: number;
+  currency: string;
+  subscriptionDuration: number;
+  subscriptionDurationUnit: DurationUnit;
+  subscriptionExpirationDate: Date;
+}