feat: 增加尊享包商品及折扣逻辑，完善VIP与尊享包相关接口和数据返回

- 新增尊享包商品类型，支持 5000W 和 10000W Tokens
- 增加尊享包折扣计算与折扣后价格获取方法
- PayService 新增获取商品列表接口，支持尊享包折扣展示
- PayManager 支持尊享包订单金额按折扣计算，并新增获取用户累计充值金额方法
- OpenApiService Anthropic接口增加VIP与尊享包用量校验
- AiGateWayManager 增加尊享包Token扣减逻辑
- AiAccountService 返回用户VIP状态、到期时间及尊享包Token统计信息

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain.Shared/Enums/GoodsTypeEnum.cs

@@ -106,53 +106,18 @@ public enum GoodsTypeEnum
     YiXinVip8 = 8,
 
     // 尊享包服务 - 需要VIP资格才能购买
-    [Price(49.9, 0)]
-    [DisplayName("Premium Package 5M Tokens")]
+    [Price(188.9, 0)]
+    [DisplayName("Premium Package 5000W Tokens")]
     [GoodsCategory(GoodsCategoryType.PremiumPackage)]
-    [TokenAmount(5_000_000)]
-    PremiumPackage5M = 101,
+    [TokenAmount(5000)]
+    PremiumPackage5000W = 101,
 
-    [Price(99.9, 0)]
-    [DisplayName("Premium Package 10M Tokens")]
+    [Price(248.9, 0)]
+    [DisplayName("Premium Package 10000W Tokens")]
     [GoodsCategory(GoodsCategoryType.PremiumPackage)]
-    [TokenAmount(10_000_000)]
-    PremiumPackage10M = 102,
-
-    [Price(199.9, 0)]
-    [DisplayName("Premium Package 25M Tokens")]
-    [GoodsCategory(GoodsCategoryType.PremiumPackage)]
-    [TokenAmount(25_000_000)]
-    PremiumPackage25M = 103,
-
-    [Price(399.9, 0)]
-    [DisplayName("Premium Package 50M Tokens")]
-    [GoodsCategory(GoodsCategoryType.PremiumPackage)]
-    [TokenAmount(50_000_000)]
-    PremiumPackage50M = 104
-
-    // [Price(197.1, 9)]
-    // [DisplayName("YiXinVip 9 month")]
-    // YiXinVip9 = 9
-
-    // [Price(0.01, 1)]
-    // [DisplayName("YiXinVip Test")]
-    // YiXinVipTest = 0,
-    //
-    // [Price(0.01, 1)]
-    // [DisplayName("YiXinVip 1 month")]
-    // YiXinVip1 = 1,
-    //
-    // [Price(0.01, 3)]
-    // [DisplayName("YiXinVip 3 month")]
-    // YiXinVip3 = 3,
-    //
-    // [Price(0.01, 6)]
-    // [DisplayName("YiXinVip 6 month")]
-    // YiXinVip6 = 6,
-    //
-    // [Price(0.01, 10)]
-    // [DisplayName("YiXinVip 10 month")]
-    // YiXinVip10 = 10
+    [TokenAmount(10000)]
+    PremiumPackage10000W = 102,
+    
 }
 
 public static class GoodsTypeEnumExtensions
@@ -259,4 +224,42 @@ public static class GoodsTypeEnumExtensions
         var tokenAttribute = fieldInfo?.GetCustomAttribute<TokenAmountAttribute>();
         return tokenAttribute?.TokenAmount ?? 0;
     }
+
+    /// <summary>
+    /// 计算折扣金额（仅用于尊享包）
+    /// 规则：每累加充值10元，减少1元，最多减少20元
+    /// </summary>
+    /// <param name="goodsType">商品类型</param>
+    /// <param name="totalRechargeAmount">用户累加充值金额</param>
+    /// <returns>折扣金额</returns>
+    public static decimal CalculateDiscount(this GoodsTypeEnum goodsType, decimal totalRechargeAmount)
+    {
+        // 只有尊享包才有折扣
+        if (!goodsType.IsPremiumPackage())
+        {
+            return 0m;
+        }
+
+        // 每10元减1元
+        var discountAmount = Math.Floor(totalRechargeAmount / 10m);
+
+        // 最多减少20元
+        return Math.Min(discountAmount, 20m);
+    }
+
+    /// <summary>
+    /// 获取折扣后的价格（仅用于尊享包）
+    /// </summary>
+    /// <param name="goodsType">商品类型</param>
+    /// <param name="totalRechargeAmount">用户累加充值金额</param>
+    /// <returns>折扣后的价格</returns>
+    public static decimal GetDiscountedPrice(this GoodsTypeEnum goodsType, decimal totalRechargeAmount)
+    {
+        var originalPrice = goodsType.GetTotalAmount();
+        var discount = goodsType.CalculateDiscount(totalRechargeAmount);
+        var discountedPrice = originalPrice - discount;
+
+        // 确保价格不为负数，至少为0.01元
+        return Math.Max(discountedPrice, 0.01m);
+    }
 }