feat: 扩展领域模型与配置

src/Domain/TakeoutSaaS.Domain/Products/Entities/Product.cs

@@ -0,0 +1,100 @@
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 商品（SPU）信息。
+/// </summary>
+public sealed class Product : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 所属门店。
+    /// </summary>
+    public Guid StoreId { get; set; }
+
+    /// <summary>
+    /// 所属分类。
+    /// </summary>
+    public Guid CategoryId { get; set; }
+
+    /// <summary>
+    /// 商品编码。
+    /// </summary>
+    public string SpuCode { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 商品名称。
+    /// </summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 副标题/卖点。
+    /// </summary>
+    public string? Subtitle { get; set; }
+
+    /// <summary>
+    /// 售卖单位（份/杯等）。
+    /// </summary>
+    public string? Unit { get; set; }
+
+    /// <summary>
+    /// 现价。
+    /// </summary>
+    public decimal Price { get; set; }
+
+    /// <summary>
+    /// 原价。
+    /// </summary>
+    public decimal? OriginalPrice { get; set; }
+
+    /// <summary>
+    /// 库存数量（可选）。
+    /// </summary>
+    public int? StockQuantity { get; set; }
+
+    /// <summary>
+    /// 最大每单限购。
+    /// </summary>
+    public int? MaxQuantityPerOrder { get; set; }
+
+    /// <summary>
+    /// 商品状态。
+    /// </summary>
+    public ProductStatus Status { get; set; } = ProductStatus.Draft;
+
+    /// <summary>
+    /// 主图。
+    /// </summary>
+    public string? CoverImage { get; set; }
+
+    /// <summary>
+    /// Gallery 图片逗号分隔。
+    /// </summary>
+    public string? GalleryImages { get; set; }
+
+    /// <summary>
+    /// 商品描述。
+    /// </summary>
+    public string? Description { get; set; }
+
+    /// <summary>
+    /// 支持堂食。
+    /// </summary>
+    public bool EnableDineIn { get; set; } = true;
+
+    /// <summary>
+    /// 支持自提。
+    /// </summary>
+    public bool EnablePickup { get; set; } = true;
+
+    /// <summary>
+    /// 支持配送。
+    /// </summary>
+    public bool EnableDelivery { get; set; } = true;
+
+    /// <summary>
+    /// 是否热门推荐。
+    /// </summary>
+    public bool IsFeatured { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAddonGroup.cs

@@ -0,0 +1,45 @@
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 加料/做法分组。
+/// </summary>
+public sealed class ProductAddonGroup : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 所属商品。
+    /// </summary>
+    public Guid ProductId { get; set; }
+
+    /// <summary>
+    /// 分组名称。
+    /// </summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 选择类型。
+    /// </summary>
+    public AddonSelectionType SelectionType { get; set; } = AddonSelectionType.Single;
+
+    /// <summary>
+    /// 最小选择数量。
+    /// </summary>
+    public int? MinSelect { get; set; }
+
+    /// <summary>
+    /// 最大选择数量。
+    /// </summary>
+    public int? MaxSelect { get; set; }
+
+    /// <summary>
+    /// 是否必选。
+    /// </summary>
+    public bool IsRequired { get; set; }
+
+    /// <summary>
+    /// 排序值。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAddonOption.cs

@@ -0,0 +1,34 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 加料选项。
+/// </summary>
+public sealed class ProductAddonOption : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 所属加料分组。
+    /// </summary>
+    public Guid AddonGroupId { get; set; }
+
+    /// <summary>
+    /// 选项名称。
+    /// </summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 附加价格。
+    /// </summary>
+    public decimal? ExtraPrice { get; set; }
+
+    /// <summary>
+    /// 是否默认选项。
+    /// </summary>
+    public bool IsDefault { get; set; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAttributeGroup.cs

@@ -0,0 +1,35 @@
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 商品规格/属性分组。
+/// </summary>
+public sealed class ProductAttributeGroup : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 关联门店，可为空表示所有门店共享。
+    /// </summary>
+    public Guid? StoreId { get; set; }
+
+    /// <summary>
+    /// 分组名称，例如“辣度”“份量”。
+    /// </summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 选择类型（单选/多选）。
+    /// </summary>
+    public AttributeSelectionType SelectionType { get; set; } = AttributeSelectionType.Single;
+
+    /// <summary>
+    /// 是否必选。
+    /// </summary>
+    public bool IsRequired { get; set; }
+
+    /// <summary>
+    /// 显示排序。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductAttributeOption.cs

@@ -0,0 +1,34 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 商品规格选项。
+/// </summary>
+public sealed class ProductAttributeOption : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 所属规格组。
+    /// </summary>
+    public Guid AttributeGroupId { get; set; }
+
+    /// <summary>
+    /// 选项名称。
+    /// </summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 附加价格。
+    /// </summary>
+    public decimal? ExtraPrice { get; set; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
+
+    /// <summary>
+    /// 是否默认选中。
+    /// </summary>
+    public bool IsDefault { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductCategory.cs

@@ -0,0 +1,34 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 商品分类。
+/// </summary>
+public sealed class ProductCategory : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 所属门店。
+    /// </summary>
+    public Guid StoreId { get; set; }
+
+    /// <summary>
+    /// 分类名称。
+    /// </summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 分类描述。
+    /// </summary>
+    public string? Description { get; set; }
+
+    /// <summary>
+    /// 排序值。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
+
+    /// <summary>
+    /// 是否启用。
+    /// </summary>
+    public bool IsEnabled { get; set; } = true;
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductMediaAsset.cs

@@ -0,0 +1,35 @@
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 商品媒资素材。
+/// </summary>
+public sealed class ProductMediaAsset : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 商品标识。
+    /// </summary>
+    public Guid ProductId { get; set; }
+
+    /// <summary>
+    /// 媒体类型。
+    /// </summary>
+    public MediaAssetType MediaType { get; set; } = MediaAssetType.Image;
+
+    /// <summary>
+    /// 媒资链接。
+    /// </summary>
+    public string Url { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 描述或标题。
+    /// </summary>
+    public string? Caption { get; set; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; set; } = 100;
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductPricingRule.cs

@@ -0,0 +1,45 @@
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 商品价格策略，支持会员价/时段价等。
+/// </summary>
+public sealed class ProductPricingRule : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 所属商品。
+    /// </summary>
+    public Guid ProductId { get; set; }
+
+    /// <summary>
+    /// 策略类型。
+    /// </summary>
+    public PricingRuleType RuleType { get; set; } = PricingRuleType.Member;
+
+    /// <summary>
+    /// 条件描述（JSON），如会员等级、渠道等。
+    /// </summary>
+    public string ConditionsJson { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 特殊价格。
+    /// </summary>
+    public decimal Price { get; set; }
+
+    /// <summary>
+    /// 生效开始时间。
+    /// </summary>
+    public DateTime? StartTime { get; set; }
+
+    /// <summary>
+    /// 生效结束时间。
+    /// </summary>
+    public DateTime? EndTime { get; set; }
+
+    /// <summary>
+    /// 生效星期（JSON 数组）。
+    /// </summary>
+    public string? WeekdaysJson { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Products/Entities/ProductSku.cs

@@ -0,0 +1,49 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Products.Entities;
+
+/// <summary>
+/// 商品 SKU，记录具体规格组合价格。
+/// </summary>
+public sealed class ProductSku : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 所属商品标识。
+    /// </summary>
+    public Guid ProductId { get; set; }
+
+    /// <summary>
+    /// SKU 编码。
+    /// </summary>
+    public string SkuCode { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 条形码。
+    /// </summary>
+    public string? Barcode { get; set; }
+
+    /// <summary>
+    /// 售价。
+    /// </summary>
+    public decimal Price { get; set; }
+
+    /// <summary>
+    /// 原价。
+    /// </summary>
+    public decimal? OriginalPrice { get; set; }
+
+    /// <summary>
+    /// 可售库存。
+    /// </summary>
+    public int? StockQuantity { get; set; }
+
+    /// <summary>
+    /// 重量（千克）。
+    /// </summary>
+    public decimal? Weight { get; set; }
+
+    /// <summary>
+    /// 规格属性 JSON（记录选项 ID）。
+    /// </summary>
+    public string AttributesJson { get; set; } = string.Empty;
+}