feat: add payment module and factory

src/modules/payments/providers/payments.service.ts

@@ -0,0 +1,42 @@
+import { Injectable } from "@nestjs/common";
+import { QueryRunner } from "typeorm";
+
+import { User } from "../../users/entities/user.entity";
+// import { PaymentMethod } from "../entities/payment-method.entity";
+import { Payment } from "../entities/payment.entity";
+import { PaymentGatewayFactory } from "../factories/payment.factory";
+// import { PaymentsRepository } from "../repositories/payments.repository";
+import { GatewayType } from "../types/gateway.type";
+
+@Injectable()
+export class PaymentsService {
+  constructor(
+    private readonly gatewayFactory: PaymentGatewayFactory,
+    // private readonly paymentsRepository: PaymentsRepository,
+  ) {}
+  //*********************************** */
+  //*********************************** */
+  async processPayment(provider: GatewayType, amount: number, description: string, email?: string, mobile?: string) {
+    const paymentGateway = this.gatewayFactory.getPaymentGateway(provider);
+    return paymentGateway.processPayment({ amount, description, email, mobile });
+  }
+  //*********************************** */
+  //*********************************** */
+  async createPaymentForUser(user: User, amount: number, reference: string, queryRunner: QueryRunner) {
+    // const paymentMethod = queryRunner.manager.create(PaymentMethod, {});
+
+    const payment = queryRunner.manager.create(Payment, {
+      amount,
+      reference,
+      user,
+    });
+
+    await queryRunner.manager.save(Payment, payment);
+    return payment;
+  }
+  //*********************************** */
+  //*********************************** */
+  async getAvailableGateways() {
+    return this.gatewayFactory.getAvailablePaymentGateways();
+  }
+}