[feat/#92] 통계 도메인 작성

Author: sejoon00

src/main/java/com/moplus/moplus_server/global/error/exception/ErrorCode.java

@@ -76,6 +76,11 @@ public enum ErrorCode {
     ALREADY_PUBLISHED_ERROR(HttpStatus.BAD_REQUEST, "이미 발행된 문항세트는 컨펌해제할 수 없습니다."),
     PROBLEM_SET_DELETED(HttpStatus.BAD_REQUEST, "삭제된 문항세트는 발행할 수 없습니다"),
     PROBLEM_SET_NOT_CONFIRMED(HttpStatus.BAD_REQUEST, "컨펌되지 않은 문항세트는 발행할 수 없습니다"),
+
+    // 통계
+    PROBLEM_STATISTIC_NOT_FOUND(HttpStatus.NOT_FOUND, "해당 문항의 통계 정보를 찾을 수 없습니다"),
+    PROBLEM_SET_STATISTIC_NOT_FOUND(HttpStatus.NOT_FOUND, "해당 문항세트의 통계 정보를 찾을 수 없습니다"),
+    CHILD_PROBLEM_STATISTIC_NOT_FOUND(HttpStatus.NOT_FOUND, "해당 새끼 문항의 통계 정보를 찾을 수 없습니다"),
     ;
 
 

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/ChildProblemStatistic.java

@@ -13,7 +13,7 @@
 @Getter
 @Entity
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-public class ChildProblemStatistic {
+public class ChildProblemStatistic implements StatisticCounter {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -29,4 +29,14 @@ public ChildProblemStatistic(Long childProblemId) {
         this.childProblemId = childProblemId;
         this.countStatistic = new CountStatistic();
     }
+
+    @Override
+    public void addViewCount() {
+        this.countStatistic.addViewCount();
+    }
+
+    @Override
+    public void addSubmitCount() {
+        this.countStatistic.addSubmitCount();
+    }
 }

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/CountStatistic.java

@@ -3,12 +3,22 @@
 import jakarta.persistence.Embeddable;
 
 @Embeddable
-public class CountStatistic {
+public class CountStatistic implements StatisticCounter {
     private Long viewCount;
     private Long submitCount;
 
     public CountStatistic() {
         this.viewCount = 0L;
         this.submitCount = 0L;
     }
+
+    @Override
+    public void addViewCount() {
+        this.viewCount++;
+    }
+
+    @Override
+    public void addSubmitCount() {
+        this.submitCount++;
+    }
 }

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/CountUpper.java

@@ -1,6 +1,7 @@
 package com.moplus.moplus_server.statistic.Problem.domain;
 
 import jakarta.persistence.Column;
+import jakarta.persistence.Embedded;
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
@@ -12,7 +13,7 @@
 @Getter
 @Entity
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-public class ProblemSetStatistic {
+public class ProblemSetStatistic implements StatisticCounter {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -23,9 +24,22 @@ public class ProblemSetStatistic {
     private Long viewCount;
     private Long submitCount;
 
+    @Embedded
+    private CountStatistic countStatistic;
+
     public ProblemSetStatistic(Long problemSetId, Long viewCount, Long submitCount) {
         this.problemSetId = problemSetId;
         this.viewCount = viewCount;
         this.submitCount = submitCount;
     }
+
+    @Override
+    public void addViewCount() {
+        this.countStatistic.addViewCount();
+    }
+
+    @Override
+    public void addSubmitCount() {
+        this.countStatistic.addSubmitCount();
+    }
 }

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/ProblemSetStatistic.java

@@ -1,6 +1,7 @@
 package com.moplus.moplus_server.statistic.Problem.domain;
 
 import jakarta.persistence.Column;
+import jakarta.persistence.Embedded;
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
@@ -13,7 +14,7 @@
 @Getter
 @Entity
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-public class ProblemStatistic {
+public class ProblemStatistic implements StatisticCounter {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -24,10 +25,23 @@ public class ProblemStatistic {
     private Long viewCount;
     private Long submitCount;
 
+    @Embedded
+    private CountStatistic countStatistic;
+
     @Builder
     public ProblemStatistic(Long problemId, Long viewCount, Long submitCount) {
         this.problemId = problemId;
         this.viewCount = viewCount;
         this.submitCount = submitCount;
     }
+
+    @Override
+    public void addViewCount() {
+        this.countStatistic.addViewCount();
+    }
+
+    @Override
+    public void addSubmitCount() {
+        this.countStatistic.addSubmitCount();
+    }
 }

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/ProblemStatistic.java

@@ -0,0 +1,11 @@
+package com.moplus.moplus_server.statistic.Problem.domain;
+
+public interface StatisticCounter {
+    void addSubmitCount();
+
+    void addViewCount();
+
+    default void updateCount(StatisticFieldType type) {
+        type.updateCount(this);
+    }
+}

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/StatisticCounter.java

@@ -0,0 +1,5 @@
+package com.moplus.moplus_server.statistic.Problem.domain;
+
+public enum StatisticEntityTarget {
+    PROBLEM, PROBLEM_SET, CHILD_PROBLEM
+}

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/StatisticEntityTarget.java

@@ -0,0 +1,16 @@
+package com.moplus.moplus_server.statistic.Problem.domain;
+
+import java.util.function.Consumer;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public enum StatisticFieldType {
+    VIEW(StatisticCounter::addViewCount),
+    SUBMIT(StatisticCounter::addSubmitCount);
+
+    private final Consumer<StatisticCounter> countUpdater;
+
+    public void updateCount(StatisticCounter counter) {
+        countUpdater.accept(counter);
+    }
+} 

src/main/java/com/moplus/moplus_server/statistic/Problem/domain/StatisticFieldType.java

@@ -0,0 +1,13 @@
+package com.moplus.moplus_server.statistic.Problem.repository;
+
+import com.moplus.moplus_server.global.error.exception.ErrorCode;
+import com.moplus.moplus_server.global.error.exception.NotFoundException;
+import com.moplus.moplus_server.statistic.Problem.domain.ChildProblemStatistic;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ChildProblemStatisticRepository extends JpaRepository<ChildProblemStatistic, Long> {
+    default ChildProblemStatistic findByIdElseThrow(Long id) {
+        return findById(id)
+            .orElseThrow(() -> new NotFoundException(ErrorCode.CHILD_PROBLEM_STATISTIC_NOT_FOUND));
+    }
+} 

src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ChildProblemStatisticRepository.java

@@ -0,0 +1,13 @@
+package com.moplus.moplus_server.statistic.Problem.repository;
+
+import com.moplus.moplus_server.global.error.exception.ErrorCode;
+import com.moplus.moplus_server.global.error.exception.NotFoundException;
+import com.moplus.moplus_server.statistic.Problem.domain.ProblemSetStatistic;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ProblemSetStatisticRepository extends JpaRepository<ProblemSetStatistic, Long> {
+    default ProblemSetStatistic findByIdElseThrow(Long id) {
+        return findById(id)
+            .orElseThrow(() -> new NotFoundException(ErrorCode.PROBLEM_SET_STATISTIC_NOT_FOUND));
+    }
+} 

src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemSetStatisticRepository.java

@@ -0,0 +1,13 @@
+package com.moplus.moplus_server.statistic.Problem.repository;
+
+import com.moplus.moplus_server.global.error.exception.ErrorCode;
+import com.moplus.moplus_server.global.error.exception.NotFoundException;
+import com.moplus.moplus_server.statistic.Problem.domain.ProblemStatistic;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ProblemStatisticRepository extends JpaRepository<ProblemStatistic, Long> {
+    default ProblemStatistic findByIdElseThrow(Long id) {
+        return findById(id)
+            .orElseThrow(() -> new NotFoundException(ErrorCode.PROBLEM_STATISTIC_NOT_FOUND));
+    }
+} 

src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemStatisticRepository.java

@@ -0,0 +1,33 @@
+package com.moplus.moplus_server.statistic.Problem.service;
+
+import com.moplus.moplus_server.statistic.Problem.domain.StatisticCounter;
+import com.moplus.moplus_server.statistic.Problem.domain.StatisticEntityTarget;
+import com.moplus.moplus_server.statistic.Problem.domain.StatisticFieldType;
+import com.moplus.moplus_server.statistic.Problem.repository.ChildProblemStatisticRepository;
+import com.moplus.moplus_server.statistic.Problem.repository.ProblemSetStatisticRepository;
+import com.moplus.moplus_server.statistic.Problem.repository.ProblemStatisticRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class CountStatisticsUpdateService {
+    private final ProblemStatisticRepository problemStatisticRepository;
+    private final ProblemSetStatisticRepository problemSetStatisticRepository;
+    private final ChildProblemStatisticRepository childProblemStatisticRepository;
+
+    @Transactional
+    public void updateStatistics(Long id, StatisticFieldType type, StatisticEntityTarget target) {
+        StatisticCounter statistic = findStatistic(id, target);
+        statistic.updateCount(type);
+    }
+
+    private StatisticCounter findStatistic(Long id, StatisticEntityTarget target) {
+        return switch (target) {
+            case PROBLEM -> problemStatisticRepository.findByIdElseThrow(id);
+            case PROBLEM_SET -> problemSetStatisticRepository.findByIdElseThrow(id);
+            case CHILD_PROBLEM -> childProblemStatisticRepository.findByIdElseThrow(id);
+        };
+    }
+}