feat: 新增ai-stock模块

Yi.Abp.Net8/module/ai-stock/Yi.Framework.Stock.Domain/Entities/StockHoldingAggregateRoot.cs

@@ -0,0 +1,141 @@
+using SqlSugar;
+using Volo.Abp.Auditing;
+using Volo.Abp.Domain.Entities;
+using Yi.Framework.Core.Data;
+
+namespace Yi.Framework.Stock.Domain.Entities
+{
+    /// <summary>
+    /// 用户股票持仓聚合根
+    /// </summary>
+    /// <remarks>
+    /// 记录用户持有的股票数量和相关信息
+    /// </remarks>
+    [SugarTable("Stock_Holding")]
+    public class StockHoldingAggregateRoot : AggregateRoot<Guid>, ISoftDelete, IAuditedObject
+    {
+
+        /// <summary>
+        /// 逻辑删除
+        /// </summary>
+        public bool IsDeleted { get; set; }
+
+        /// <summary>
+        /// 创建时间
+        /// </summary>
+        public DateTime CreationTime { get; set; } = DateTime.Now;
+
+        /// <summary>
+        /// 创建者
+        /// </summary>
+        public Guid? CreatorId { get; set; }
+
+        /// <summary>
+        /// 最后修改者
+        /// </summary>
+        public Guid? LastModifierId { get; set; }
+
+        /// <summary>
+        /// 最后修改时间
+        /// </summary>
+        public DateTime? LastModificationTime { get; set; }
+
+        /// <summary>
+        /// 用户ID
+        /// </summary>
+        /// <remarks>关联到持有股票的用户</remarks>
+        public Guid UserId { get; set; }
+
+        /// <summary>
+        /// 股票ID
+        /// </summary>
+        /// <remarks>关联到具体的股票</remarks>
+        public Guid StockId { get; set; }
+
+        /// <summary>
+        /// 股票代码
+        /// </summary>
+        /// <remarks>冗余字段，方便查询</remarks>
+        public string StockCode { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 股票名称
+        /// </summary>
+        /// <remarks>冗余字段，方便查询</remarks>
+        public string StockName { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 持有数量
+        /// </summary>
+        /// <remarks>用户持有的股票数量</remarks>
+        public int Quantity { get; set; }
+
+        /// <summary>
+        /// 平均成本价
+        /// </summary>
+        /// <remarks>用户购买这些股票的平均成本价</remarks>
+        public decimal AverageCostPrice { get; set; }
+
+        /// <summary>
+        /// 持仓成本
+        /// </summary>
+        /// <remarks>总投入成本 = 平均成本价 * 持有数量</remarks>
+        [SugarColumn(IsIgnore = true)]
+        public decimal TotalCost => AverageCostPrice * Quantity;
+
+        public StockHoldingAggregateRoot() { }
+
+        public StockHoldingAggregateRoot(
+            Guid userId,
+            Guid stockId,
+            string stockCode,
+            string stockName,
+            int quantity,
+            decimal averageCostPrice)
+        {
+            UserId = userId;
+            StockId = stockId;
+            StockCode = stockCode;
+            StockName = stockName;
+            Quantity = quantity;
+            AverageCostPrice = averageCostPrice;
+        }
+
+        /// <summary>
+        /// 增加持仓数量
+        /// </summary>
+        /// <param name="quantity">增加的数量</param>
+        /// <param name="price">本次购买价格</param>
+        public void AddQuantity(int quantity, decimal price)
+        {
+            if (quantity <= 0)
+                throw new ArgumentException("增加的数量必须大于0");
+
+            // 计算新的平均成本价
+            decimal totalCost = AverageCostPrice * Quantity + price * quantity;
+            Quantity += quantity;
+            AverageCostPrice = totalCost / Quantity;
+        }
+
+        /// <summary>
+        /// 减少持仓数量
+        /// </summary>
+        /// <param name="quantity">减少的数量</param>
+        public void ReduceQuantity(int quantity)
+        {
+            if (quantity <= 0)
+                throw new ArgumentException("减少的数量必须大于0");
+
+            if (quantity > Quantity)
+                throw new ArgumentException("减少的数量不能大于持有数量");
+
+            Quantity -= quantity;
+
+            // 如果数量为0，标记为删除
+            if (Quantity == 0)
+            {
+                IsDeleted = true;
+            }
+        }
+    }
+}