feat: payment service with IPG

src/application/IPG/PaymentGateway.ts

@@ -0,0 +1,18 @@
+import { Injectable } from "@nestjs/common";
+import { ZarinPalGateway } from "./gateways/zarinpal";
+
+@Injectable()
+export class PaymentGateway {
+
+    constructor(
+        private zarinpalGateway: ZarinPalGateway,
+    ) { }
+
+    async requestPayment(data: any) {
+        return await this.zarinpalGateway.processPayment(data.amount, data.userId, data.callbackPath);
+    }
+
+    async verifyPayment(data: any) {
+        return await this.zarinpalGateway.verifyPayment(data.authority, data.amount);
+    }
+}