Merge pull request #22 from GDSC-DGU/feat/19

[feat] #19 매칭 대기자 목록 조회 API

src/main/java/org/harang/server/controller/MatchingController.java

@@ -8,6 +8,7 @@
 import org.harang.server.dto.request.MatchingRequest;
 import org.harang.server.dto.type.SuccessMessage;
 import org.harang.server.service.MatchingService;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PatchMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -38,4 +39,9 @@ public ApiResponse<?> finishMatching(final @NotNull @PathVariable("postId") Long
         matchingService.finishMatching(postId);
         return ApiResponse.success(SuccessMessage.OK);
     }
+
+    @GetMapping("/{postId}/waitings")
+    public ApiResponse<?> getWaitinglist(final @NotNull @PathVariable("postId") Long postId) {
+        return ApiResponse.success(matchingService.getWaitingList(postId));
+    }
 }

src/main/java/org/harang/server/domain/Member.java

@@ -28,13 +28,17 @@ public class Member {
     @Column(name = "age", nullable = false)
     private Long age;
 
+
     /* Relation Parent Mapping */
     @OneToMany(mappedBy = "member")
     private List<Matching> matchingList = new ArrayList<>();
 
     @OneToMany(mappedBy = "member")
     private List<Post> postList = new ArrayList<>();
 
+    @OneToMany(mappedBy = "member")
+    private List<Waiting> waitingList = new ArrayList<>();
+
     @Builder
     public Member(Type type, Gender gender, Long age) {
         this.type = type;

src/main/java/org/harang/server/domain/Post.java

@@ -61,6 +61,9 @@ public class Post {
     @OneToMany(mappedBy = "post")
     private List<PostCategory> postCategoryList = new ArrayList<>();
 
+    @OneToMany(mappedBy = "post")
+    private List<Waiting> waitingList = new ArrayList<>();
+
     @Builder
     public Post(Member member, LocalDateTime createdAt, String title, String content, String chatLink, Gender preferredGender, int preferredAge, LocalDate preferredStartAt, LocalDate preferredEndAt, Status status) {
         this.member = member;

src/main/java/org/harang/server/domain/Waiting.java

@@ -0,0 +1,37 @@
+package org.harang.server.domain;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Waiting {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "post_id", nullable = false)
+    private Post post;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id", nullable = false)
+    private Member member;
+
+    @Builder
+    public Waiting(Post post, Member member) {
+        this.post = post;
+        this.member = member;
+    }
+}

src/main/java/org/harang/server/dto/response/WaitingResponse.java

@@ -0,0 +1,16 @@
+package org.harang.server.dto.response;
+
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+public class WaitingResponse {
+    private Long memberId;
+    private String nickname;
+
+    @Builder
+    public WaitingResponse(Long memberId, String nickname) {
+        this.memberId = memberId;
+        this.nickname = nickname;
+    }
+}

src/main/java/org/harang/server/dto/type/ErrorMessage.java

@@ -36,6 +36,7 @@ public enum ErrorMessage {
     MEMBER_NOT_FOUND("40402", HttpStatus.NOT_FOUND, "사용자가 존재하지 않습니다."),
     POST_NOT_FOUND("40403", HttpStatus.NOT_FOUND, "게시글이 존재하지 않습니다."),
     MATCHING_NOT_FOUND("40404", HttpStatus.NOT_FOUND, "매칭이 존재하지 않습니다."),
+    MEMBER_INFO_NOT_FOUND("40405", HttpStatus.NOT_FOUND, "사용자의 정보가 존재하지 않습니다."),
 
 
     // method not allowed - 409

src/main/java/org/harang/server/repository/MemberInfoRepository.java

@@ -0,0 +1,17 @@
+package org.harang.server.repository;
+
+import java.util.Optional;
+import org.harang.server.domain.MemberInfo;
+import org.harang.server.dto.type.ErrorMessage;
+import org.harang.server.exception.CustomException;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface MemberInfoRepository extends JpaRepository<MemberInfo, Long> {
+    default MemberInfo findByMemberIdOrThrow(Long memberId) {
+        return findByMemberId(memberId).orElseThrow(() -> new CustomException(ErrorMessage.MEMBER_INFO_NOT_FOUND));
+    }
+
+    Optional<MemberInfo> findByMemberId(Long memberId);
+}

src/main/java/org/harang/server/repository/WaitingRepository.java

@@ -0,0 +1,12 @@
+package org.harang.server.repository;
+
+import java.util.List;
+import org.harang.server.domain.Member;
+import org.harang.server.domain.Waiting;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface WaitingRepository extends JpaRepository<Waiting, Long> {
+    List<Waiting> findAllByPostId(Long postId);
+}

src/main/java/org/harang/server/service/MatchingService.java

@@ -1,17 +1,22 @@
 package org.harang.server.service;
 
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.harang.server.domain.Matching;
 import org.harang.server.domain.Member;
 import org.harang.server.domain.Post;
+import org.harang.server.domain.Waiting;
 import org.harang.server.domain.enums.Status;
 import org.harang.server.domain.enums.Type;
 import org.harang.server.dto.request.MatchingRequest;
+import org.harang.server.dto.response.WaitingResponse;
 import org.harang.server.dto.type.ErrorMessage;
 import org.harang.server.exception.CustomException;
 import org.harang.server.repository.MatchingRepository;
+import org.harang.server.repository.MemberInfoRepository;
 import org.harang.server.repository.MemberRepository;
 import org.harang.server.repository.PostRepository;
+import org.harang.server.repository.WaitingRepository;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -21,6 +26,8 @@ public class MatchingService {
     private final MatchingRepository matchingRepository;
     private final MemberRepository memberRepository;
     private final PostRepository postRepository;
+    private final WaitingRepository waitingRepository;
+    private final MemberInfoRepository memberInfoRepository;
 
     @Transactional
     public void createMatching(Long memberId, MatchingRequest matchingRequest) {
@@ -76,4 +83,15 @@ public void finishMatching(Long postId) {
         postRepository.save(post);
         matchingRepository.save(matching);
     }
+
+    public List<WaitingResponse> getWaitingList(Long postId) {
+        List<Waiting> waitingList = waitingRepository.findAllByPostId(postId);
+
+        List<WaitingResponse> waitingListResponse = waitingList.stream()
+                .map(w -> WaitingResponse.builder()
+                        .memberId(w.getMember().getId())
+                        .nickname(memberInfoRepository.findByMemberIdOrThrow(w.getMember().getId()).getNickname())
+                        .build()).toList();
+        return waitingListResponse;
+    }
 }