fix: the bug in the payment service

database/seeders/payment-gateway.seeder.ts

@@ -0,0 +1,34 @@
+import { EntityManager, RequiredEntityData } from "@mikro-orm/postgresql";
+import { Seeder } from "@mikro-orm/seeder";
+import { Logger } from "@nestjs/common";
+
+import { PaymentGateway } from "../../src/modules/payments/entities/payment-gateway.entity";
+import { GatewayEnum } from "../../src/modules/payments/enums/gateway.enum";
+
+export class PaymentGatewaySeeder extends Seeder {
+  private readonly logger = new Logger(PaymentGatewaySeeder.name);
+
+  async run(em: EntityManager): Promise<void> {
+    const paymentGateways: RequiredEntityData<PaymentGateway>[] = [
+      {
+        name: GatewayEnum.ZARINPAL,
+        nameFa: "زرین پال",
+        logoUrl: "https://storage.danakcorp.com/logo/fa-dark.png",
+        description: "درگاه پرداخت زرین پال",
+      },
+    ];
+
+    for (const paymentGateway of paymentGateways) {
+      const existingPaymentGateway = await em.findOne(PaymentGateway, { name: paymentGateway.name });
+
+      if (!existingPaymentGateway) {
+        const createdPaymentGateway = em.create(PaymentGateway, paymentGateway);
+
+        await em.persistAndFlush(createdPaymentGateway);
+        this.logger.log(`[PaymentGatewaySeeder] Created payment gateway: ${createdPaymentGateway.name}`);
+      } else {
+        this.logger.log(`[PaymentGatewaySeeder] Payment gateway already exists: ${paymentGateway.name}`);
+      }
+    }
+  }
+}