GETP-168 refactor: 프로젝트 좋아요 / 좋아요 취소 서비스를 추상화에 대한 구현체로 변경

src/main/java/es/princip/getp/domain/like/command/application/PeopleLikeService.java

@@ -3,8 +3,8 @@
 import es.princip.getp.domain.client.command.domain.Client;
 import es.princip.getp.domain.client.command.domain.ClientRepository;
 import es.princip.getp.domain.client.exception.NotFoundClientException;
-import es.princip.getp.domain.like.command.domain.Liker;
-import es.princip.getp.domain.like.command.domain.Unliker;
+import es.princip.getp.domain.like.command.domain.people.PeopleLiker;
+import es.princip.getp.domain.like.command.domain.people.PeopleUnliker;
 import es.princip.getp.domain.people.command.domain.People;
 import es.princip.getp.domain.people.command.domain.PeopleRepository;
 import es.princip.getp.domain.people.exception.NotFoundPeopleException;
@@ -13,12 +13,12 @@
 import org.springframework.transaction.annotation.Transactional;
 
 @Service
-@Transactional(readOnly = true)
 @RequiredArgsConstructor
+@Transactional(readOnly = true)
 public class PeopleLikeService {
 
-    private final Liker peopleLiker;
-    private final Unliker peopleUnliker;
+    private final PeopleLiker peopleLiker;
+    private final PeopleUnliker peopleUnliker;
 
     private final ClientRepository clientRepository;
     private final PeopleRepository peopleRepository;

src/main/java/es/princip/getp/domain/project/command/application/ProjectLikeService.java → src/main/java/es/princip/getp/domain/like/command/application/ProjectLikeService.java

@@ -1,9 +1,12 @@
-package es.princip.getp.domain.project.command.application;
+package es.princip.getp.domain.like.command.application;
 
+import es.princip.getp.domain.like.command.domain.project.ProjectLiker;
+import es.princip.getp.domain.like.command.domain.project.ProjectUnliker;
 import es.princip.getp.domain.people.command.domain.People;
 import es.princip.getp.domain.people.command.domain.PeopleRepository;
 import es.princip.getp.domain.people.exception.NotFoundPeopleException;
-import es.princip.getp.domain.project.command.domain.*;
+import es.princip.getp.domain.project.command.domain.Project;
+import es.princip.getp.domain.project.command.domain.ProjectRepository;
 import es.princip.getp.domain.project.exception.NotFoundProjectException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -16,7 +19,6 @@ public class ProjectLikeService {
 
     private final ProjectRepository projectRepository;
     private final PeopleRepository peopleRepository;
-    private final ProjectLikeRepository projectLikeRepository;
 
     private final ProjectLiker projectLiker;
     private final ProjectUnliker projectUnliker;
@@ -34,9 +36,7 @@ public void like(final Long memberId, final Long projectId) {
         final Project project = projectRepository.findById(projectId)
             .orElseThrow(NotFoundProjectException::new);
 
-        final ProjectLike like = projectLiker.like(people, project);
-
-        projectLikeRepository.save(like);
+        projectLiker.like(people, project);
     }
 
     /**

src/main/java/es/princip/getp/domain/like/command/domain/people/PeopleLiker.java

@@ -4,9 +4,9 @@
 import es.princip.getp.domain.like.command.domain.Likeable;
 import es.princip.getp.domain.like.command.domain.Liker;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
+import org.springframework.stereotype.Component;
 
-@Service
+@Component
 public class PeopleLiker extends Liker<PeopleLike> {
 
     private final PeopleLikeRepository peopleLikeRepository;

src/main/java/es/princip/getp/domain/like/command/domain/people/PeopleUnliker.java

@@ -2,9 +2,9 @@
 
 import es.princip.getp.domain.like.command.domain.Unliker;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
+import org.springframework.stereotype.Component;
 
-@Service
+@Component
 public class PeopleUnliker extends Unliker {
 
     @Autowired

src/main/java/es/princip/getp/domain/like/command/domain/project/ProjectLike.java

@@ -0,0 +1,31 @@
+package es.princip.getp.domain.like.command.domain.project;
+
+import es.princip.getp.domain.like.command.domain.Like;
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Entity
+@DiscriminatorColumn
+@Table(name = "project_like")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
+@AttributeOverrides(
+    {
+        @AttributeOverride(name = "id", column = @Column(name = "project_like_id")),
+        @AttributeOverride(name = "likerId", column = @Column(name = "people_id")),
+        @AttributeOverride(name = "likedId", column = @Column(name = "project_id"))
+    }
+)
+public class ProjectLike extends Like {
+
+    private ProjectLike(final Long peopleId, final Long projectId) {
+        super(peopleId, projectId);
+    }
+
+    public static ProjectLike of(final Long peopleId, final Long projectId) {
+        return new ProjectLike(peopleId, projectId);
+    }
+}

src/main/java/es/princip/getp/domain/like/command/domain/project/ProjectLikeRepository.java

@@ -0,0 +1,9 @@
+package es.princip.getp.domain.like.command.domain.project;
+
+import es.princip.getp.domain.like.command.domain.LikeRepository;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface ProjectLikeRepository extends JpaRepository<ProjectLike, Long>, LikeRepository {
+}

src/main/java/es/princip/getp/domain/like/command/domain/project/ProjectLiker.java

@@ -0,0 +1,27 @@
+package es.princip.getp.domain.like.command.domain.project;
+
+import es.princip.getp.domain.like.command.domain.LikeReceivable;
+import es.princip.getp.domain.like.command.domain.Likeable;
+import es.princip.getp.domain.like.command.domain.Liker;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ProjectLiker extends Liker<ProjectLike> {
+
+    private final ProjectLikeRepository projectLikeRepository;
+
+    @Autowired
+    public ProjectLiker(ProjectLikeRepository projectLikeRepository) {
+        super(projectLikeRepository);
+        this.projectLikeRepository = projectLikeRepository;
+    }
+
+    @Override
+    public ProjectLike like(final Likeable likeable, final LikeReceivable likeReceivable) {
+        checkAlreadyLiked(likeable.getId(), likeReceivable.getId());
+        final ProjectLike like = ProjectLike.of(likeable.getId(), likeReceivable.getId());
+        projectLikeRepository.save(like);
+        return like;
+    }
+}

src/main/java/es/princip/getp/domain/like/command/domain/project/ProjectUnliker.java

@@ -0,0 +1,14 @@
+package es.princip.getp.domain.like.command.domain.project;
+
+import es.princip.getp.domain.like.command.domain.Unliker;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ProjectUnliker extends Unliker {
+
+    @Autowired
+    public ProjectUnliker(ProjectLikeRepository projectLikeRepository) {
+        super(projectLikeRepository);
+    }
+}

src/main/java/es/princip/getp/domain/project/command/presentation/ProjectLikeController.java → src/main/java/es/princip/getp/domain/like/command/presentation/ProjectLikeController.java

@@ -1,6 +1,6 @@
-package es.princip.getp.domain.project.command.presentation;
+package es.princip.getp.domain.like.command.presentation;
 
-import es.princip.getp.domain.project.command.application.ProjectLikeService;
+import es.princip.getp.domain.like.command.application.ProjectLikeService;
 import es.princip.getp.infra.dto.response.ApiResponse;
 import es.princip.getp.infra.dto.response.ApiResponse.ApiSuccessResult;
 import es.princip.getp.infra.security.details.PrincipalDetails;

src/main/java/es/princip/getp/domain/like/query/dao/ProjectLikeDao.java

@@ -0,0 +1,4 @@
+package es.princip.getp.domain.like.query.dao;
+
+public interface ProjectLikeDao extends LikeDao {
+}

src/main/java/es/princip/getp/domain/like/query/dao/ProjectLikeQueryDslDao.java

@@ -0,0 +1,40 @@
+package es.princip.getp.domain.like.query.dao;
+
+import es.princip.getp.infra.support.QueryDslSupport;
+import org.springframework.stereotype.Repository;
+
+import java.util.Map;
+import java.util.Optional;
+
+import static es.princip.getp.domain.like.command.domain.project.QProjectLike.projectLike;
+import static java.util.stream.Collectors.toMap;
+
+@Repository
+public class ProjectLikeQueryDslDao extends QueryDslSupport implements ProjectLikeDao {
+
+    @Override
+    // TODO: 좋아요 수 조회 성능 개선 필요
+    public Long countByLikedId(final Long projectId) {
+        return queryFactory.select(projectLike.count())
+            .from(projectLike)
+            .where(projectLike.likedId.eq(projectId))
+            .fetchOne();
+    }
+
+    @Override
+    public Map<Long, Long> countByLikedIds(final Long... likedIds) {
+        return queryFactory.select(projectLike.likedId, projectLike.count())
+            .from(projectLike)
+            .where(projectLike.likedId.in(likedIds))
+            .groupBy(projectLike.likedId)
+            .fetch()
+            .stream()
+            .collect(
+                toMap(
+                    tuple -> tuple.get(projectLike.likedId),
+                    tuple -> Optional.ofNullable(tuple.get(projectLike.count()))
+                        .orElse(0L)
+                )
+            );
+    }
+}

src/main/java/es/princip/getp/domain/people/query/dao/PeopleQueryDslDao.java

@@ -3,7 +3,7 @@
 import com.querydsl.core.Tuple;
 import com.querydsl.core.types.Projections;
 import com.querydsl.core.types.dsl.Expressions;
-import es.princip.getp.domain.like.query.dao.LikeDao;
+import es.princip.getp.domain.like.query.dao.PeopleLikeDao;
 import es.princip.getp.domain.people.command.domain.People;
 import es.princip.getp.domain.people.command.domain.PeopleProfile;
 import es.princip.getp.domain.people.command.domain.QPeople;
@@ -37,7 +37,7 @@
 // TODO: 조회 성능 개선 필요
 public class PeopleQueryDslDao extends QueryDslSupport implements PeopleDao {
 
-    private final LikeDao peopleLikeDao;
+    private final PeopleLikeDao peopleLikeDao;
 
     private Map<Long, Tuple> findMemberAndPeopleByPeopleId(final Long... peopleId) {
         return queryFactory.select(

src/main/java/es/princip/getp/domain/project/command/domain/Project.java

@@ -3,6 +3,7 @@
 import es.princip.getp.domain.common.domain.BaseTimeEntity;
 import es.princip.getp.domain.common.domain.Duration;
 import es.princip.getp.domain.common.domain.Hashtag;
+import es.princip.getp.domain.like.command.domain.LikeReceivable;
 import jakarta.persistence.*;
 import lombok.*;
 
@@ -16,7 +17,7 @@
 @Table(name = "project")
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @Getter
-public class Project extends BaseTimeEntity {
+public class Project extends BaseTimeEntity implements LikeReceivable {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -127,4 +128,9 @@ public List<Hashtag> getHashtags() {
     public boolean isApplicationClosed(final Clock clock) {
         return applicationDuration.isEnded(clock) || status != ProjectStatus.APPLYING;
     }
+
+    @Override
+    public Long getId() {
+        return projectId;
+    }
 }