chore: add discount logic to apply to the plan price and ...

src/modules/discounts/entities/discount.entity.ts

@@ -3,6 +3,7 @@ import { Column, DeleteDateColumn, Entity, OneToMany } from "typeorm";
 import { UsageDiscount } from "./usage-discount.entity";
 import { BaseEntity } from "../../../common/entities/base.entity";
 import { DecimalTransformer } from "../../../common/transformers/decimal.transformer";
+import { Invoice } from "../../invoices/entities/invoice.entity";
 import { SubscriptionPlan } from "../../subscriptions/entities/subscription.entity";
 import { DiscountApplicationType } from "../enums/discount-application-type.enum";
 import { DiscountType } from "../enums/discount-type.enum";
@@ -45,4 +46,7 @@ export class Discount extends BaseEntity {
 
   @OneToMany(() => SubscriptionPlan, (subscriptionPlan) => subscriptionPlan.directDiscount)
   subscriptionPlans: SubscriptionPlan[];
+
+  @OneToMany(() => Invoice, (invoice) => invoice.discount)
+  invoices: Invoice[];
 }