添加配置管理功能，包括获取和设置配置值的接口及实现

Service/ConfigService.cs

@@ -0,0 +1,77 @@
+namespace Service;
+
+public interface IConfigService
+{
+    /// <summary>
+    /// 根据Key获取配置值
+    /// </summary>
+    Task<T?> GetConfigByKeyAsync<T>(string key);
+
+    /// <summary>
+    /// 设置配置值
+    /// </summary>
+    Task<bool> SetConfigByKeyAsync<T>(string key, T value);
+}
+
+public class ConfigService(IConfigRepository configRepository) : IConfigService
+{
+    public async Task<T?> GetConfigByKeyAsync<T>(string key)
+    {
+        var config = await configRepository.GetByKeyAsync(key);
+        if (config == null || string.IsNullOrEmpty(config.Value))
+        {
+            return default;
+        }
+
+        return config.Type switch
+        {
+            ConfigType.Boolean => (T)(object)bool.Parse(config.Value),
+            ConfigType.String => (T)(object)config.Value,
+            ConfigType.Number => (T)Convert.ChangeType(config.Value, typeof(T)),
+            ConfigType.Json => JsonSerializer.Deserialize<T>(config.Value) ?? default,
+            _ => default
+        };
+    }
+
+    public async Task<bool> SetConfigByKeyAsync<T>(string key, T value)
+    {
+        if (value == null)
+        {
+            return false;
+        }
+
+        var config = await configRepository.GetByKeyAsync(key);
+        var type = typeof(T) switch
+        {
+            Type t when t == typeof(bool) => ConfigType.Boolean,
+            Type t when t == typeof(int)
+                || t == typeof(double)
+                || t == typeof(float)
+                || t == typeof(decimal) => ConfigType.Number,
+            Type t when t == typeof(string) => ConfigType.String,
+            _ => ConfigType.Json
+        };
+        var valueStr = type switch
+        {
+            ConfigType.Boolean => value.ToString()!.ToLower(),
+            ConfigType.Number => value.ToString()!,
+            ConfigType.String => value as string ?? string.Empty,
+            ConfigType.Json => JsonSerializer.Serialize(value),
+            _ => throw new InvalidOperationException("Unsupported config type")
+        };
+        if (config == null)
+        {
+            config = new ConfigEntity
+            {
+                Key = key,
+                Type = type,
+
+            };
+            return await configRepository.AddAsync(config);
+        }
+
+        config.Value = valueStr;
+        config.Type = type;
+        return await configRepository.UpdateAsync(config);
+    }
+}

Service/SmartHandleService.cs

@@ -14,7 +14,8 @@ public class SmartHandleService(
     ITextSegmentService textSegmentService,
     ILogger<SmartHandleService> logger,
     ITransactionCategoryRepository categoryRepository,
-    IOpenAiService openAiService
+    IOpenAiService openAiService,
+    IConfigService configService
 ) : ISmartHandleService
 {
     public async Task SmartClassifyAsync(long[] transactionIds, Action<(string, string)> chunkAction)
@@ -258,9 +259,9 @@ public class SmartHandleService(
         {
             // 第一步：使用AI生成聚合SQL查询
             var now = DateTime.Now;
-            var sqlPrompt = $"""
-            当前日期：{now:yyyy年M月d日}（{now:yyyy-MM-dd}）
-            用户问题：{userInput}
+            var sqlPrompt = $$"""
+            当前日期：{{now:yyyy年M月d日}}（{{now:yyyy-MM-dd}}）
+            用户问题：{{userInput}}
             
             数据库类型：SQLite
             数据库表名：TransactionRecord
@@ -291,22 +292,27 @@ public class SmartHandleService(
             - 提取日期：strftime('%Y-%m-%d', OccurredAt)
             - 不要使用 YEAR()、MONTH()、DAY() 函数，SQLite不支持
             
-            示例1（按分类统计）：
-            用户：这三个月坐车花了多少钱？
-            返回：SELECT Classify, COUNT(*) as TransactionCount, SUM(ABS(Amount)) as TotalAmount, AVG(ABS(Amount)) as AvgAmount FROM TransactionRecord WHERE Type = 0 AND OccurredAt >= '2025-10-01' AND OccurredAt < '2026-01-01' AND (Classify LIKE '%交通%' OR Reason LIKE '%打车%' OR Reason LIKE '%公交%' OR Reason LIKE '%地铁%') GROUP BY Classify ORDER BY TotalAmount DESC
-            
-            示例2（按月统计）：
-            用户：最近半年每月支出情况
-            返回：SELECT strftime('%Y', OccurredAt) as Year, strftime('%m', OccurredAt) as Month, COUNT(*) as TransactionCount, SUM(ABS(Amount)) as TotalAmount FROM TransactionRecord WHERE Type = 0 AND OccurredAt >= '2025-06-01' GROUP BY strftime('%Y', OccurredAt), strftime('%m', OccurredAt) ORDER BY Year, Month
-            
-            示例3（总体统计）：
-            用户：本月花了多少钱？
-            返回：SELECT COUNT(*) as TransactionCount, SUM(ABS(Amount)) as TotalAmount, AVG(ABS(Amount)) as AvgAmount, MAX(ABS(Amount)) as MaxAmount FROM TransactionRecord WHERE Type = 0 AND OccurredAt >= '2025-12-01' AND OccurredAt < '2026-01-01'
-            
-            示例4（详细记录 - 仅在用户明确要求详情时使用）：
-            用户：单笔超过1000元的支出有哪些？
-            返回：SELECT OccurredAt, Classify, Reason, ABS(Amount) as Amount FROM TransactionRecord WHERE Type = 0 AND ABS(Amount) > 1000 ORDER BY Amount DESC LIMIT 50
-            
+            【重要】最终的SQL会被一下DOTNET代码执行, 请确保你生成的代码可执行，不报错
+            ```C#
+            public async Task<List<dynamic>> ExecuteDynamicSqlAsync(string completeSql)
+            {
+                var dt = await FreeSql.Ado.ExecuteDataTableAsync(completeSql);
+                var result = new List<dynamic>();
+
+                foreach (System.Data.DataRow row in dt.Rows)
+                {
+                    var expando = new System.Dynamic.ExpandoObject() as IDictionary<string, object>;
+                    foreach (System.Data.DataColumn column in dt.Columns)
+                    {
+                        expando[column.ColumnName] = row[column];
+                    }
+                    result.Add(expando);
+                }
+
+                return result;
+            }
+            ```
+
             只返回SQL语句。
             """;
 
@@ -344,10 +350,15 @@ public class SmartHandleService(
                 Encoder = System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping
             });
 
+            var userPromptExtra = await configService.GetConfigByKeyAsync<string>("BillAnalysisPrompt");
+
             var dataPrompt = $"""
             当前日期：{DateTime.Now:yyyy年M月d日}
             用户问题：{userInput}
             
+            【用户要求（重要）】
+            {userInput}
+
             查询结果数据（JSON格式）：
             {dataJson}
             
@@ -375,6 +386,9 @@ public class SmartHandleService(
             13. 提供洞察分析：根据数据给出有价值的发现和趋势分析
             14. 给出实用建议：基于数据提供合理的财务建议
             15. 语言专业、清晰、简洁
+
+            【用户补充（重要）】
+            {userPromptExtra}
             
             直接输出纯净的HTML内容，不要markdown代码块标记。
             """;