feat:Initial commit

StoreService/Services/IOrderService.cs

@@ -0,0 +1,17 @@
+using StoreService.Models;
+
+namespace StoreService.Services;
+
+/// <summary>
+/// Service responsible for order lifecycle (create, pay, redeem) including price calculation.
+/// </summary>
+public interface IOrderService
+{
+    #region Methods
+    Task<OrderDto> CreateOrderAsync(CreateOrderRequest request, CancellationToken ct = default);
+    Task<OrderDto?> GetOrderAsync(long id, CancellationToken ct = default);
+    Task<OrderDto> PayOrderAsync(long id, CancellationToken ct = default);
+    Task<OrderDto> RedeemOrderItemsAsync(long id, CancellationToken ct = default);
+    #endregion
+}
+