Merge pull request #142 from UMC-WOWMARKET/feat/like

[Feat] 프로젝트 Like 및 Unlike API 생성 #134

src/main/java/wowmarket/wow_server/detail/project/controller/ProjectController.java

@@ -2,12 +2,14 @@
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.*;
 import wowmarket.wow_server.detail.demandproject.dto.DemandDetailRequestDto;
 import wowmarket.wow_server.detail.project.dto.*;
 import wowmarket.wow_server.detail.project.service.ItemService;
 import wowmarket.wow_server.detail.project.service.OrderService;
 import wowmarket.wow_server.detail.project.service.ProjectService;
+import wowmarket.wow_server.domain.User;
 
 import java.util.List;
 
@@ -50,4 +52,16 @@ public ResponseEntity createDemandForm(@PathVariable Long project_id, @RequestBo
         return orderService.createOrderForm(project_id, requestDto);
     }
 
+    @PostMapping("/{project_id}/like")
+    public ResponseEntity<?> likeProject(@PathVariable Long project_id, @AuthenticationPrincipal User user) {
+        return projectService.likeProject(project_id, user);
+    }
+
+    @DeleteMapping("/{project_id}/unlike")
+    public ResponseEntity<?> unlikeProject(@PathVariable Long project_id, @AuthenticationPrincipal User user) {
+        return projectService.unLikeProject(project_id, user);
+    }
+
+
+
 }

src/main/java/wowmarket/wow_server/detail/project/service/ProjectService.java

@@ -1,36 +1,75 @@
 package wowmarket.wow_server.detail.project.service;
 
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.server.ResponseStatusException;
 import wowmarket.wow_server.detail.project.dto.ProjectImgResponseDto;
 import wowmarket.wow_server.detail.project.dto.ProjectInfoResponseDto;
+import wowmarket.wow_server.domain.Likes;
 import wowmarket.wow_server.domain.Project;
+import wowmarket.wow_server.domain.User;
 import wowmarket.wow_server.repository.ItemRepository;
+import wowmarket.wow_server.repository.LikesRepository;
 import wowmarket.wow_server.repository.ProjectRepository;
 import wowmarket.wow_server.repository.UserRepository;
 
+import java.util.Optional;
+
 @Service
+@RequiredArgsConstructor
 public class ProjectService {
     private final UserRepository userRepository;
     private final ProjectRepository projectRepository;
     private final ItemRepository itemRepository;
-
-    public ProjectService(ProjectRepository projectRepository, UserRepository userRepository, ItemRepository itemRepository) {
-        this.userRepository = userRepository;
-        this.projectRepository = projectRepository;
-        this.itemRepository = itemRepository;
-    }
+    private final LikesRepository likesRepository;
 
     //주문폼: 굿즈 소개(이미지 3개) 조회
-    public ProjectImgResponseDto getProjectImg(Long project_id){
+    public ProjectImgResponseDto getProjectImg(Long project_id) {
         Project project = projectRepository.findByProject_Id(project_id);
         return new ProjectImgResponseDto(project);
     }
 
     //주문폼: 상세 정보 조회
-    public ProjectInfoResponseDto getProjectInfo(Long project_id){
+    public ProjectInfoResponseDto getProjectInfo(Long project_id) {
         Project project = projectRepository.findByProject_Id(project_id);
         projectRepository.updateView(project_id); //상세정보 조회할 때마다 조회수 +1
         return new ProjectInfoResponseDto(project, itemRepository.getTotalOrderCountByProject(project),
                 itemRepository.getTotalGoalByProject(project));
     }
+
+    @Transactional
+    public ResponseEntity<?> likeProject(Long projectId, User user) {
+        Optional<Likes> likeExist = likesRepository.findByUserAndProject(user, projectId);
+        if (likeExist.isEmpty()) {
+            likesRepository.save(
+                    Likes.builder().user(user).project(projectRepository.findById(projectId).get()).build()
+            );
+            projectRepository.updateProjectLike(projectId);
+            userRepository.updateProjectLike(user);
+        } else {
+            throw new ResponseStatusException(HttpStatus.CONFLICT, "이미 like한 프로젝트");
+        }
+        return ResponseEntity.ok().build();
+    }
+
+    @Transactional
+    public ResponseEntity<?> unLikeProject(Long projectId, User user) {
+        Optional<Likes> likeExist = likesRepository.findByUserAndProject(user, projectId);
+        if (likeExist.isPresent()) {
+            if (projectRepository.findById(projectId).get().getLikeCnt() > 0
+                    && user.getProjectLike() > 0) {
+                likesRepository.deleteLikes(likeExist.get().getId());
+                projectRepository.updateProjectUnLike(projectId);
+                userRepository.updateProjectUnLike(user);
+            } else {
+                throw new ResponseStatusException(HttpStatus.NOT_FOUND, "like 수가 0이라 unlike할 수 없음");
+            }
+        } else {
+                throw new ResponseStatusException(HttpStatus.NOT_FOUND, "like하지 않아서 unlike할 수 없음");
+        }
+        return ResponseEntity.ok().build();
+    }
 }

src/main/java/wowmarket/wow_server/domain/Likes.java

@@ -0,0 +1,29 @@
+package wowmarket.wow_server.domain;
+
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@Getter
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Likes extends BaseEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "like_id")
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "project_id")
+    private Project project;
+
+    @Builder
+    public Likes(User user, Project project) {
+        this.user = user;
+        this.project = project;
+    }
+}

src/main/java/wowmarket/wow_server/domain/Project.java

@@ -2,6 +2,7 @@
 
 import jakarta.persistence.*;
 import lombok.*;
+import org.hibernate.annotations.Check;
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -74,6 +75,8 @@ public class Project extends BaseEntity{
     @Column(columnDefinition = "integer default 0", nullable = false)
     private int view; //조회수
 
+    @Column(columnDefinition = "integer default 0", nullable = false)
+    private int likeCnt;
 
     public void setUser(User user){
         this.user = user;

src/main/java/wowmarket/wow_server/domain/User.java

@@ -2,6 +2,7 @@
 
 import jakarta.persistence.*;
 import lombok.*;
+import org.hibernate.annotations.Check;
 import org.hibernate.annotations.ColumnDefault;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
@@ -50,6 +51,12 @@ public class User extends BaseEntity implements UserDetails {
     @Enumerated(EnumType.STRING)
     private Login_Method login_method;
 
+    @Column(columnDefinition = "integer default 0", nullable = false)
+    private int projectLike;
+
+    @Column(columnDefinition = "integer default 0", nullable = false)
+    private int demandLike;
+
     public void encodePassword(PasswordEncoder passwordEncoder) {
         this.password = passwordEncoder.encode(password);
     }

src/main/java/wowmarket/wow_server/repository/LikesRepository.java

@@ -0,0 +1,22 @@
+package wowmarket.wow_server.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+import wowmarket.wow_server.domain.Likes;
+import wowmarket.wow_server.domain.User;
+
+import java.util.Optional;
+
+@Repository
+public interface LikesRepository extends JpaRepository<Likes, Long> {
+    @Query("SELECT l FROM Likes l " +
+            "WHERE l.user = :user AND l.project.id = :projectId")
+    Optional<Likes> findByUserAndProject(@Param("user") User user, @Param("projectId") Long projectId);
+
+    @Modifying
+    @Query("DELETE FROM Likes l WHERE l.id = :likesId")
+    void deleteLikes(@Param("likesId") Long likesId);
+}

src/main/java/wowmarket/wow_server/repository/ProjectRepository.java

@@ -55,4 +55,13 @@ Page<Project> findBySearchUserUniv(@Param("current_date") LocalDate current_date
     @Query(nativeQuery = true, value = "update project p set p.participant_number=p.participant_number+1 where project_id=?")
     int updateParticipantNumber(Long projectId);
 
+    @Modifying
+    @Query("UPDATE Project p SET p.likeCnt = p.likeCnt + 1 " +
+            "WHERE p.id = :projectId")
+    void updateProjectLike(@Param("projectId") Long projectId);
+
+    @Modifying
+    @Query("UPDATE Project p SET p.likeCnt = p.likeCnt - 1 " +
+            "WHERE p.id = :projectId")
+    void updateProjectUnLike(@Param("projectId") Long projectId);
 }

src/main/java/wowmarket/wow_server/repository/UserRepository.java

@@ -1,10 +1,22 @@
 package wowmarket.wow_server.repository;
 
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import wowmarket.wow_server.domain.User;
 import java.util.Optional;
 
 public interface UserRepository extends JpaRepository<User, Long> {
     Optional<User> findByEmail(String email);
 
+    @Modifying
+    @Query("UPDATE User u SET u.projectLike = u.projectLike + 1 " +
+            "WHERE u = :user")
+    void updateProjectLike(@Param("user") User user);
+
+    @Modifying
+    @Query("UPDATE User u SET u.projectLike = u.projectLike - 1 " +
+            "WHERE u = :user")
+    void updateProjectUnLike(@Param("user") User user);
 }