feat: 통계 기반 랭킹 구현

src/main/java/com/jiwon/mylog/domain/statistic/UserStatsController.java

@@ -1,6 +1,7 @@
 package com.jiwon.mylog.domain.statistic;
 
 import com.jiwon.mylog.domain.statistic.dto.DailyReportResponse;
+import com.jiwon.mylog.domain.statistic.dto.UserRankResponse;
 import com.jiwon.mylog.global.security.auth.annotation.LoginUser;
 import lombok.RequiredArgsConstructor;
 import org.springframework.format.annotation.DateTimeFormat;
@@ -11,6 +12,7 @@
 import org.springframework.web.bind.annotation.RestController;
 
 import java.time.LocalDate;
+import java.util.List;
 
 @RequiredArgsConstructor
 @RequestMapping("/api")
@@ -19,6 +21,19 @@ public class UserStatsController {
 
     private final UserStatsService userStatsService;
 
+    @GetMapping("/users/rankers/weekly")
+    public ResponseEntity<List<UserRankResponse>> getRanker(
+            @RequestParam(required = false) @DateTimeFormat(pattern = "yyyy-MM-dd") LocalDate startDate,
+            @RequestParam(required = false) @DateTimeFormat(pattern = "yyyy-MM-dd") LocalDate endDate
+    ) {
+        LocalDate end = endDate != null ? endDate : LocalDate.now().minusDays(1);
+        LocalDate start = startDate != null ? startDate : end.minusDays(6);
+
+        List<UserRankResponse> response = userStatsService.getRanker(start, end);
+        return ResponseEntity.ok(response);
+    }
+
+
     @GetMapping("/users/stats")
     public ResponseEntity<DailyReportResponse> getDailyStats(
             @LoginUser Long userId,

src/main/java/com/jiwon/mylog/domain/statistic/UserStatsService.java

@@ -1,13 +1,17 @@
 package com.jiwon.mylog.domain.statistic;
 
 import com.jiwon.mylog.domain.statistic.dto.DailyReportResponse;
+import com.jiwon.mylog.domain.statistic.dto.UserRankResponse;
+import com.jiwon.mylog.domain.statistic.repository.UserStatsRepository;
 import com.jiwon.mylog.global.redis.key.RedisKey;
 import com.jiwon.mylog.global.redis.RedisUtil;
 import lombok.RequiredArgsConstructor;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDate;
+import java.util.List;
 
 @RequiredArgsConstructor
 @Service
@@ -20,6 +24,12 @@ public class UserStatsService {
     private final static String REDIS_SET_DEFAULT = "0";
     private final static int REDIS_GET_DEFAULT = 0;
 
+    @Cacheable(value = "stat::ranker", key = "'start:' + #start + ':end:' + #end")
+    @Transactional(readOnly = true)
+    public List<UserRankResponse> getRanker(LocalDate start, LocalDate end) {
+        return userStatsRepository.findWeeklyTopUsers(start, end, 3);
+    }
+
     @Transactional(readOnly = true)
     public DailyReportResponse getUserDailyStats(Long userId, LocalDate date) {
         if (date.isEqual(LocalDate.now())) {

src/main/java/com/jiwon/mylog/domain/statistic/dto/UserRankResponse.java

@@ -0,0 +1,14 @@
+package com.jiwon.mylog.domain.statistic.dto;
+
+import com.jiwon.mylog.domain.user.dto.response.UserSummaryResponse;
+
+public record UserRankResponse(
+        Long userId,
+        String username,
+        String imageKey,
+        int receivedLikes,
+        int receivedComments,
+        int createdPosts,
+        int createdComments,
+        int total) {
+}

src/main/java/com/jiwon/mylog/domain/statistic/repository/UserStatsCustomRepository.java

@@ -0,0 +1,10 @@
+package com.jiwon.mylog.domain.statistic.repository;
+
+import com.jiwon.mylog.domain.statistic.dto.UserRankResponse;
+
+import java.time.LocalDate;
+import java.util.List;
+
+public interface UserStatsCustomRepository {
+    List<UserRankResponse> findWeeklyTopUsers(LocalDate startDate, LocalDate endDate, int limit);
+}

src/main/java/com/jiwon/mylog/domain/statistic/UserStatsRepository.java → src/main/java/com/jiwon/mylog/domain/statistic/repository/UserStatsRepository.java

@@ -1,5 +1,6 @@
-package com.jiwon.mylog.domain.statistic;
+package com.jiwon.mylog.domain.statistic.repository;
 
+import com.jiwon.mylog.domain.statistic.UserDailyStats;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
@@ -10,7 +11,7 @@
 import java.util.Optional;
 
 @Repository
-public interface UserStatsRepository extends JpaRepository<UserDailyStats, Long> {
+public interface UserStatsRepository extends JpaRepository<UserDailyStats, Long>, UserStatsCustomRepository {
     Optional<UserDailyStats> findByUserIdAndDate(Long userId, LocalDate date);
 
     @Modifying

src/main/java/com/jiwon/mylog/domain/statistic/repository/UserStatsRepositoryImpl.java

@@ -0,0 +1,59 @@
+package com.jiwon.mylog.domain.statistic.repository;
+
+import com.jiwon.mylog.domain.image.entity.QProfileImage;
+import com.jiwon.mylog.domain.statistic.QUserDailyStats;
+import com.jiwon.mylog.domain.statistic.dto.UserRankResponse;
+import com.jiwon.mylog.domain.user.entity.QUser;
+import com.querydsl.core.types.Projections;
+import com.querydsl.core.types.dsl.NumberExpression;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Repository;
+
+import java.time.LocalDate;
+import java.util.List;
+
+@Slf4j
+@RequiredArgsConstructor
+@Repository
+public class UserStatsRepositoryImpl implements UserStatsCustomRepository {
+
+    private final JPAQueryFactory jpaQueryFactory;
+
+    @Override
+    public List<UserRankResponse> findWeeklyTopUsers(LocalDate startDate, LocalDate endDate, int limit) {
+        QUserDailyStats stat = QUserDailyStats.userDailyStats;
+        QUser user = QUser.user;
+        QProfileImage profileImage = QProfileImage.profileImage;
+
+        NumberExpression<Integer> receivedLikesSum = stat.receivedLikes.sum();
+        NumberExpression<Integer> receivedCommentsSum = stat.receivedComments.sum();
+        NumberExpression<Integer> createdPostsSum = stat.createdPosts.sum();
+        NumberExpression<Integer> createdCommentsSum = stat.createdComments.sum();
+        NumberExpression<Integer> totalScore = receivedLikesSum
+                .add(receivedCommentsSum)
+                .add(createdPostsSum)
+                .add(createdCommentsSum);
+
+        return jpaQueryFactory
+                .select(Projections.constructor(UserRankResponse.class,
+                        user.id,
+                        user.username,
+                        profileImage.fileKey.coalesce(""),
+                        receivedLikesSum,
+                        receivedCommentsSum,
+                        createdPostsSum,
+                        createdCommentsSum,
+                        totalScore
+                ))
+                .from(stat)
+                .join(stat.user, user)
+                .leftJoin(user.profileImage, profileImage)
+                .where(stat.date.between(startDate, endDate))
+                .groupBy(user.id)
+                .orderBy(totalScore.desc())
+                .limit(limit)
+                .fetch();
+    }
+}

src/main/java/com/jiwon/mylog/global/schedular/StatsScheduler.java

@@ -1,6 +1,6 @@
 package com.jiwon.mylog.global.schedular;
 
-import com.jiwon.mylog.domain.statistic.UserStatsRepository;
+import com.jiwon.mylog.domain.statistic.repository.UserStatsRepository;
 import com.jiwon.mylog.global.redis.key.RedisKey;
 import com.jiwon.mylog.global.redis.RedisUtil;
 import com.jiwon.mylog.global.redis.key.UserStatsKey;