feat: 完善库存锁定幂等与批次扣减策略

src/Application/TakeoutSaaS.Application/App/Inventory/InventoryMapping.cs

@@ -0,0 +1,49 @@
+using TakeoutSaaS.Application.App.Inventory.Dto;
+using TakeoutSaaS.Domain.Inventory.Entities;
+
+namespace TakeoutSaaS.Application.App.Inventory;
+
+/// <summary>
+/// 库存映射辅助。
+/// </summary>
+public static class InventoryMapping
+{
+    /// <summary>
+    /// 映射库存 DTO。
+    /// </summary>
+    public static InventoryItemDto ToDto(InventoryItem item) => new()
+    {
+        Id = item.Id,
+        TenantId = item.TenantId,
+        StoreId = item.StoreId,
+        ProductSkuId = item.ProductSkuId,
+        BatchNumber = item.BatchNumber,
+        QuantityOnHand = item.QuantityOnHand,
+        QuantityReserved = item.QuantityReserved,
+        SafetyStock = item.SafetyStock,
+        Location = item.Location,
+        ExpireDate = item.ExpireDate,
+        IsPresale = item.IsPresale,
+        PresaleStartTime = item.PresaleStartTime,
+        PresaleEndTime = item.PresaleEndTime,
+        PresaleCapacity = item.PresaleCapacity,
+        PresaleLocked = item.PresaleLocked,
+        MaxQuantityPerOrder = item.MaxQuantityPerOrder,
+        IsSoldOut = item.IsSoldOut
+    };
+
+    /// <summary>
+    /// 映射批次 DTO。
+    /// </summary>
+    public static InventoryBatchDto ToDto(InventoryBatch batch) => new()
+    {
+        Id = batch.Id,
+        StoreId = batch.StoreId,
+        ProductSkuId = batch.ProductSkuId,
+        BatchNumber = batch.BatchNumber,
+        ProductionDate = batch.ProductionDate,
+        ExpireDate = batch.ExpireDate,
+        Quantity = batch.Quantity,
+        RemainingQuantity = batch.RemainingQuantity
+    };
+}