chore: complete the discount service and test the logic to create

src/modules/subscriptions/entities/subscription.entity.ts

@@ -6,7 +6,7 @@ import { UserSubscription } from "./user-subscription.entity";
 import { BaseEntity } from "../../../common/entities/base.entity";
 import { DecimalTransformer } from "../../../common/transformers/decimal.transformer";
 import { DanakService } from "../../danak-services/entities/danak-service.entity";
-import { DirectDiscount } from "../../discounts/entities/direct-discount.entity";
+import { Discount } from "../../discounts/entities/discount.entity";
 
 @Entity()
 @Index(["service", "name"], { unique: true })
@@ -29,8 +29,8 @@ export class SubscriptionPlan extends BaseEntity {
   @OneToMany(() => UserSubscription, (userSubscription) => userSubscription.plan)
   userSubscriptions: UserSubscription[];
 
-  @ManyToOne(() => DirectDiscount, (directDiscount) => directDiscount.subscriptionPlans, { nullable: true })
-  directDiscount?: DirectDiscount;
+  @ManyToOne(() => Discount, (discount) => discount.subscriptionPlans, { nullable: true })
+  directDiscount?: Discount;
 
   @DeleteDateColumn({ nullable: true })
   deletedAt?: Date;