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

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+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;
+}

src/Domain/TakeoutSaaS.Domain/Products/Enums/AddonSelectionType.cs

@@ -0,0 +1,17 @@
+namespace TakeoutSaaS.Domain.Products.Enums;
+
+/// <summary>
+/// 加料选择类型。
+/// </summary>
+public enum AddonSelectionType
+{
+    /// <summary>
+    /// 单选。
+    /// </summary>
+    Single = 0,
+
+    /// <summary>
+    /// 多选。
+    /// </summary>
+    Multiple = 1
+}

src/Domain/TakeoutSaaS.Domain/Products/Enums/AttributeSelectionType.cs

@@ -0,0 +1,17 @@
+namespace TakeoutSaaS.Domain.Products.Enums;
+
+/// <summary>
+/// 规格/加料的选择方式。
+/// </summary>
+public enum AttributeSelectionType
+{
+    /// <summary>
+    /// 单选。
+    /// </summary>
+    Single = 0,
+
+    /// <summary>
+    /// 多选。
+    /// </summary>
+    Multiple = 1
+}

src/Domain/TakeoutSaaS.Domain/Products/Enums/MediaAssetType.cs

@@ -0,0 +1,22 @@
+namespace TakeoutSaaS.Domain.Products.Enums;
+
+/// <summary>
+/// 商品媒资类型。
+/// </summary>
+public enum MediaAssetType
+{
+    /// <summary>
+    /// 图片。
+    /// </summary>
+    Image = 0,
+
+    /// <summary>
+    /// 视频。
+    /// </summary>
+    Video = 1,
+
+    /// <summary>
+    /// PDF 或说明文档。
+    /// </summary>
+    Document = 2
+}

src/Domain/TakeoutSaaS.Domain/Products/Enums/PricingRuleType.cs

@@ -0,0 +1,32 @@
+namespace TakeoutSaaS.Domain.Products.Enums;
+
+/// <summary>
+/// 价格策略类型。
+/// </summary>
+public enum PricingRuleType
+{
+    /// <summary>
+    /// 会员价格。
+    /// </summary>
+    Member = 0,
+
+    /// <summary>
+    /// 不同门店价格。
+    /// </summary>
+    Store = 1,
+
+    /// <summary>
+    /// 时间段价格。
+    /// </summary>
+    TimePeriod = 2,
+
+    /// <summary>
+    /// 区域价格。
+    /// </summary>
+    Region = 3,
+
+    /// <summary>
+    /// 活动价格。
+    /// </summary>
+    Promotion = 4
+}

src/Domain/TakeoutSaaS.Domain/Products/Enums/ProductStatus.cs

@@ -0,0 +1,12 @@
+namespace TakeoutSaaS.Domain.Products.Enums;
+
+/// <summary>
+/// 商品状态。
+/// </summary>
+public enum ProductStatus
+{
+    Draft = 0,
+    OnSale = 1,
+    OffShelf = 2,
+    Archived = 3
+}