feat(ADM-018): completed feature

project/src/modules/promotions/domain/promotion.ts

@@ -0,0 +1,30 @@
+export type PromotionType = 'percent' | 'fixed_amount';
+
+export interface Promotion {
+  code: string;
+  type: PromotionType;
+  value: number;
+  startsAt: Date;
+  endsAt: Date;
+  usageLimit: number | null;
+  usageCount: number;
+  active: boolean;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+export interface NewPromotion {
+  code: string;
+  type: PromotionType;
+  value: number;
+  startsAt: Date;
+  endsAt: Date;
+  usageLimit?: number | null;
+  active?: boolean;
+}
+
+export interface PromotionDiscount {
+  code: string;
+  type: PromotionType;
+  discountCents: number;
+}