后台管理功能补充

backend-single/src/main/java/com/emotion/service/impl/DashboardServiceImpl.java

@@ -1,8 +1,12 @@
 package com.emotion.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.emotion.dto.request.AiConfigCallStatsRequest;
+import com.emotion.dto.response.AiConfigCallStatsResponse;
+import com.emotion.dto.response.AiConfigCallStatsItem;
 import com.emotion.dto.response.DashboardStatsResponse;
 import com.emotion.entity.*;
+import com.emotion.mapper.AiConfigMapper;
 import com.emotion.service.*;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -56,6 +60,9 @@ public class DashboardServiceImpl implements DashboardService {
     @Autowired
     private AdminService adminService;
 
+    @Autowired
+    private AiConfigMapper aiConfigMapper;
+
     @Autowired
     private AchievementService achievementService;
 
@@ -464,6 +471,26 @@ public class DashboardServiceImpl implements DashboardService {
         return recentLogins;
     }
 
+    @Override
+    public AiConfigCallStatsResponse getAiConfigCallStats(AiConfigCallStatsRequest request) {
+        Integer limit = request != null ? request.getLimit() : null;
+        if (limit == null) {
+            limit = 20;
+        }
+        // 防御性限制，避免过大查询
+        if (limit > 200) {
+            limit = 200;
+        }
+        if (limit < 1) {
+            limit = 1;
+        }
+
+        List<AiConfigCallStatsItem> items = aiConfigMapper.selectAiConfigCallStats(limit);
+        return AiConfigCallStatsResponse.builder()
+                .items(items)
+                .build();
+    }
+
     /**
      * 格式化时间描述
      */