feat: 扩展领域模型与配置

src/Domain/TakeoutSaaS.Domain/Orders/Entities/Order.cs

@@ -0,0 +1,111 @@
+using TakeoutSaaS.Domain.Orders.Enums;
+using TakeoutSaaS.Domain.Payments.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Entities;
+
+/// <summary>
+/// 交易订单。
+/// </summary>
+public sealed class Order : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 订单号。
+    /// </summary>
+    public string OrderNo { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 门店。
+    /// </summary>
+    public Guid StoreId { get; set; }
+
+    /// <summary>
+    /// 下单渠道。
+    /// </summary>
+    public OrderChannel Channel { get; set; } = OrderChannel.MiniProgram;
+
+    /// <summary>
+    /// 履约类型。
+    /// </summary>
+    public DeliveryType DeliveryType { get; set; } = DeliveryType.DineIn;
+
+    /// <summary>
+    /// 当前状态。
+    /// </summary>
+    public OrderStatus Status { get; set; } = OrderStatus.PendingPayment;
+
+    /// <summary>
+    /// 支付状态。
+    /// </summary>
+    public PaymentStatus PaymentStatus { get; set; } = PaymentStatus.Unpaid;
+
+    /// <summary>
+    /// 顾客姓名。
+    /// </summary>
+    public string? CustomerName { get; set; }
+
+    /// <summary>
+    /// 顾客手机号。
+    /// </summary>
+    public string? CustomerPhone { get; set; }
+
+    /// <summary>
+    /// 就餐桌号。
+    /// </summary>
+    public string? TableNo { get; set; }
+
+    /// <summary>
+    /// 排队号（如有）。
+    /// </summary>
+    public string? QueueNumber { get; set; }
+
+    /// <summary>
+    /// 预约 ID。
+    /// </summary>
+    public Guid? ReservationId { get; set; }
+
+    /// <summary>
+    /// 商品总额。
+    /// </summary>
+    public decimal ItemsAmount { get; set; }
+
+    /// <summary>
+    /// 优惠金额。
+    /// </summary>
+    public decimal DiscountAmount { get; set; }
+
+    /// <summary>
+    /// 应付金额。
+    /// </summary>
+    public decimal PayableAmount { get; set; }
+
+    /// <summary>
+    /// 实付金额。
+    /// </summary>
+    public decimal PaidAmount { get; set; }
+
+    /// <summary>
+    /// 支付时间。
+    /// </summary>
+    public DateTime? PaidAt { get; set; }
+
+    /// <summary>
+    /// 完成时间。
+    /// </summary>
+    public DateTime? FinishedAt { get; set; }
+
+    /// <summary>
+    /// 取消时间。
+    /// </summary>
+    public DateTime? CancelledAt { get; set; }
+
+    /// <summary>
+    /// 取消原因。
+    /// </summary>
+    public string? CancelReason { get; set; }
+
+    /// <summary>
+    /// 备注。
+    /// </summary>
+    public string? Remark { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Orders/Entities/OrderItem.cs

@@ -0,0 +1,59 @@
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Entities;
+
+/// <summary>
+/// 订单明细。
+/// </summary>
+public sealed class OrderItem : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 订单 ID。
+    /// </summary>
+    public Guid OrderId { get; set; }
+
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public Guid ProductId { get; set; }
+
+    /// <summary>
+    /// 商品名称。
+    /// </summary>
+    public string ProductName { get; set; } = string.Empty;
+
+    /// <summary>
+    /// SKU/规格描述。
+    /// </summary>
+    public string? SkuName { get; set; }
+
+    /// <summary>
+    /// 单位。
+    /// </summary>
+    public string? Unit { get; set; }
+
+    /// <summary>
+    /// 数量。
+    /// </summary>
+    public int Quantity { get; set; }
+
+    /// <summary>
+    /// 单价。
+    /// </summary>
+    public decimal UnitPrice { get; set; }
+
+    /// <summary>
+    /// 折扣金额。
+    /// </summary>
+    public decimal DiscountAmount { get; set; }
+
+    /// <summary>
+    /// 小计。
+    /// </summary>
+    public decimal SubTotal { get; set; }
+
+    /// <summary>
+    /// 自定义属性 JSON。
+    /// </summary>
+    public string? AttributesJson { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Orders/Entities/OrderStatusHistory.cs

@@ -0,0 +1,35 @@
+using TakeoutSaaS.Domain.Orders.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Entities;
+
+/// <summary>
+/// 订单状态流转记录。
+/// </summary>
+public sealed class OrderStatusHistory : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 订单标识。
+    /// </summary>
+    public Guid OrderId { get; set; }
+
+    /// <summary>
+    /// 变更后的状态。
+    /// </summary>
+    public OrderStatus Status { get; set; }
+
+    /// <summary>
+    /// 操作人标识（可为空表示系统）。
+    /// </summary>
+    public Guid? OperatorId { get; set; }
+
+    /// <summary>
+    /// 备注信息。
+    /// </summary>
+    public string? Notes { get; set; }
+
+    /// <summary>
+    /// 发生时间。
+    /// </summary>
+    public DateTime OccurredAt { get; set; } = DateTime.UtcNow;
+}

src/Domain/TakeoutSaaS.Domain/Orders/Entities/RefundRequest.cs

@@ -0,0 +1,50 @@
+using TakeoutSaaS.Domain.Orders.Enums;
+using TakeoutSaaS.Shared.Abstractions.Entities;
+
+namespace TakeoutSaaS.Domain.Orders.Entities;
+
+/// <summary>
+/// 售后/退款申请。
+/// </summary>
+public sealed class RefundRequest : MultiTenantEntityBase
+{
+    /// <summary>
+    /// 关联订单标识。
+    /// </summary>
+    public Guid OrderId { get; set; }
+
+    /// <summary>
+    /// 退款单号。
+    /// </summary>
+    public string RefundNo { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 申请金额。
+    /// </summary>
+    public decimal Amount { get; set; }
+
+    /// <summary>
+    /// 申请原因。
+    /// </summary>
+    public string Reason { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 退款状态。
+    /// </summary>
+    public RefundStatus Status { get; set; } = RefundStatus.Pending;
+
+    /// <summary>
+    /// 用户提交时间。
+    /// </summary>
+    public DateTime RequestedAt { get; set; } = DateTime.UtcNow;
+
+    /// <summary>
+    /// 审核完成时间。
+    /// </summary>
+    public DateTime? ProcessedAt { get; set; }
+
+    /// <summary>
+    /// 审核备注。
+    /// </summary>
+    public string? ReviewNotes { get; set; }
+}

src/Domain/TakeoutSaaS.Domain/Orders/Enums/DeliveryType.cs

@@ -0,0 +1,11 @@
+namespace TakeoutSaaS.Domain.Orders.Enums;
+
+/// <summary>
+/// 履约/交付方式。
+/// </summary>
+public enum DeliveryType
+{
+    DineIn = 0,
+    Pickup = 1,
+    Delivery = 2
+}

src/Domain/TakeoutSaaS.Domain/Orders/Enums/OrderChannel.cs

@@ -0,0 +1,14 @@
+namespace TakeoutSaaS.Domain.Orders.Enums;
+
+/// <summary>
+/// 下单渠道。
+/// </summary>
+public enum OrderChannel
+{
+    Unknown = 0,
+    MiniProgram = 1,
+    ScanToOrder = 2,
+    StaffConsole = 3,
+    PhoneReservation = 4,
+    ThirdPartyDelivery = 5
+}

src/Domain/TakeoutSaaS.Domain/Orders/Enums/OrderStatus.cs

@@ -0,0 +1,14 @@
+namespace TakeoutSaaS.Domain.Orders.Enums;
+
+/// <summary>
+/// 订单状态。
+/// </summary>
+public enum OrderStatus
+{
+    PendingPayment = 0,
+    AwaitingPreparation = 1,
+    InProgress = 2,
+    Ready = 3,
+    Completed = 4,
+    Cancelled = 5
+}

src/Domain/TakeoutSaaS.Domain/Orders/Enums/RefundStatus.cs

@@ -0,0 +1,27 @@
+namespace TakeoutSaaS.Domain.Orders.Enums;
+
+/// <summary>
+/// 退款申请状态。
+/// </summary>
+public enum RefundStatus
+{
+    /// <summary>
+    /// 等待审核。
+    /// </summary>
+    Pending = 0,
+
+    /// <summary>
+    /// 审核通过，待原路退款。
+    /// </summary>
+    Approved = 1,
+
+    /// <summary>
+    /// 已拒绝。
+    /// </summary>
+    Rejected = 2,
+
+    /// <summary>
+    /// 已完成退款。
+    /// </summary>
+    Refunded = 3
+}