generate code

src/modules/coupons/providers/coupon.service.ts

@@ -8,6 +8,7 @@ import { EntityManager } from '@mikro-orm/postgresql';
 import { RequiredEntityData } from '@mikro-orm/core';
 import { Coupon, CouponType } from '../entities/coupon.entity';
 import { CouponMessage, RestMessage } from 'src/common/enums/message.enum';
+import { randomBytes } from 'node:crypto';
 
 @Injectable()
 export class CouponService {
@@ -250,4 +251,13 @@ export class CouponService {
       await this.em.persistAndFlush(coupon);
     }
   }
+
+  async generateCouponCode(restId: string): Promise<string> {
+    const code = randomBytes(8).toString('hex');
+    const existingCoupon = await this.couponRepository.findOne({ code, restaurant: { id: restId } });
+    if (existingCoupon) {
+      return this.generateCouponCode(restId);
+    }
+    return code;
+  }
 }