后台新增学员的最近一个月的学习统计api

pom.xml

@@ -127,12 +127,17 @@
         <dependency>
             <groupId>cn.hutool</groupId>
             <artifactId>hutool-json</artifactId>
-            <version>5.8.15</version>
+            <version>5.8.16</version>
         </dependency>
         <dependency>
             <groupId>cn.hutool</groupId>
             <artifactId>hutool-http</artifactId>
-            <version>5.8.15</version>
+            <version>5.8.16</version>
+        </dependency>
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-core</artifactId>
+            <version>5.8.16</version>
         </dependency>
 
         <dependency>

src/main/java/xyz/playedu/api/controller/backend/SystemController.java

@@ -40,8 +40,7 @@ import java.util.Map;
 @Slf4j
 public class SystemController {
 
-    @Autowired
-    private ImageCaptchaService imageCaptchaService;
+    @Autowired private ImageCaptchaService imageCaptchaService;
 
     @GetMapping("/image-captcha")
     public JsonResponse imageCaptcha() throws IOException {

src/main/java/xyz/playedu/api/controller/backend/UserController.java

@@ -15,6 +15,9 @@
  */
 package xyz.playedu.api.controller.backend;
 
+import cn.hutool.core.date.DateTime;
+
+import lombok.Data;
 import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
 
@@ -49,6 +52,7 @@ import java.util.stream.Collectors;
 
 /**
  * @Author 杭州白书科技有限公司
+ *
  * @create 2023/2/23 09:48
  */
 @RestController
@@ -56,29 +60,23 @@ import java.util.stream.Collectors;
 @RequestMapping("/backend/v1/user")
 public class UserController {
 
-    @Autowired
-    private UserService userService;
+    @Autowired private UserService userService;
 
-    @Autowired
-    private UserDepartmentService userDepartmentService;
+    @Autowired private UserDepartmentService userDepartmentService;
 
-    @Autowired
-    private DepartmentService departmentService;
+    @Autowired private DepartmentService departmentService;
 
-    @Autowired
-    private ApplicationContext context;
+    @Autowired private ApplicationContext context;
 
-    @Autowired
-    private UserCourseHourRecordService userCourseHourRecordService;
+    @Autowired private UserCourseHourRecordService userCourseHourRecordService;
 
-    @Autowired
-    private UserCourseRecordService userCourseRecordService;
+    @Autowired private UserCourseRecordService userCourseRecordService;
 
-    @Autowired
-    private CourseHourService courseHourService;
+    @Autowired private CourseHourService courseHourService;
 
-    @Autowired
-    private CourseService courseService;
+    @Autowired private CourseService courseService;
+
+    @Autowired private UserLearnDurationStatsService userLearnDurationStatsService;
 
     @BackendPermissionMiddleware(slug = BPermissionConstant.USER_INDEX)
     @GetMapping("/index")
@@ -441,12 +439,47 @@ public class UserController {
     @GetMapping("/{id}/learn-stats")
     @SneakyThrows
     public JsonResponse learn(@PathVariable(name = "id") Integer id) {
-        User user = userService.findOrFail(id);
-
-        // 学习时长统计
-        // 今天、昨天、本周、本月
         // 最近一个月的每天学习时长
+        String todayStr = DateTime.now().toDateStr();
+        String startDateStr = DateTime.of(DateTime.now().getTime() - 86400000L * 30).toDateStr();
+        long startTime = new DateTime(startDateStr).getTime();
+        long endTime = new DateTime(todayStr).getTime();
 
-        return JsonResponse.data(null);
+        List<UserLearnDurationStats> monthRecords =
+                userLearnDurationStatsService.dateBetween(id, startDateStr, todayStr);
+        Map<Date, Long> date2duration =
+                monthRecords.stream()
+                        .collect(
+                                Collectors.toMap(
+                                        UserLearnDurationStats::getCreatedDate,
+                                        UserLearnDurationStats::getDuration));
+
+        @Data
+        class StatsItem {
+            private String key;
+            private Long value;
+        }
+
+        List<StatsItem> data = new ArrayList<>();
+
+        while (startTime <= endTime) {
+            String dateKey = DateTime.of(startTime).toDateStr();
+            Date tmpDate = new Date(startTime);
+
+            Long duration = 0L;
+            if (date2duration.get(tmpDate) != null) {
+                duration = date2duration.get(tmpDate);
+            }
+
+            StatsItem tmpItem = new StatsItem();
+            tmpItem.setKey(dateKey);
+            tmpItem.setValue(duration);
+
+            data.add(tmpItem);
+
+            startTime += 86400000;
+        }
+
+        return JsonResponse.data(data);
     }
 }

src/main/java/xyz/playedu/api/service/UserLearnDurationStatsService.java

@@ -38,4 +38,6 @@ public interface UserLearnDurationStatsService extends IService<UserLearnDuratio
     Long todayUserDuration(Integer userId);
 
     Long userDuration(Integer userId);
+
+    List<UserLearnDurationStats> dateBetween(Integer userId, String startAt, String endAt);
 }

src/main/java/xyz/playedu/api/service/impl/UserLearnDurationStatsServiceImpl.java

@@ -109,4 +109,10 @@ public class UserLearnDurationStatsServiceImpl
         Long totalDuration = getBaseMapper().getUserDuration(userId);
         return totalDuration == null ? 0L : totalDuration;
     }
+
+    @Override
+    public List<UserLearnDurationStats> dateBetween(Integer userId, String startAt, String endAt) {
+        return list(
+                query().getWrapper().eq("user_id", userId).between("created_date", startAt, endAt));
+    }
 }