feat: POST 북토크 참여신청

src/main/java/org/sophy/sophy/controller/BooktalkController.java

@@ -3,6 +3,7 @@
 import lombok.RequiredArgsConstructor;
 import org.sophy.sophy.common.dto.ApiResponseDto;
 import org.sophy.sophy.controller.dto.BooktalkUpdateDto;
+import org.sophy.sophy.controller.dto.request.BooktalkParticipationRequestDto;
 import org.sophy.sophy.controller.dto.request.BooktalkRequestDto;
 import org.sophy.sophy.controller.dto.request.CityRequestDto;
 import org.sophy.sophy.controller.dto.response.*;
@@ -49,6 +50,12 @@ public ApiResponseDto<BooktalkDetailResponseDto> getBooktalkDetail(@PathVariable
     public ApiResponseDto<List<BooktalkResponseDto>> getPlacesByCity(@Valid @RequestBody CityRequestDto cityRequestDto) {
         return ApiResponseDto.success(SuccessStatus.GET_BOOKTALKS_BY_CITY_SUCCESS, booktalkService.getBooktalksByCity(cityRequestDto));
     }
+    @PostMapping("/participation")
+    @ResponseStatus(HttpStatus.CREATED)
+    public ApiResponseDto postBooktalkParticipation(@Valid @RequestBody BooktalkParticipationRequestDto booktalkParticipationRequestDto) {
+        booktalkService.postBooktalkParticipation(booktalkParticipationRequestDto);
+        return ApiResponseDto.success(SuccessStatus.CREATE_BOOKTALK_PARTICIPATION_SUCCESS);
+    }
 
     @GetMapping("/deadline-upcoming")
     @ResponseStatus(HttpStatus.OK)

src/main/java/org/sophy/sophy/controller/dto/request/BooktalkParticipationRequestDto.java

@@ -0,0 +1,23 @@
+package org.sophy.sophy.controller.dto.request;
+
+import lombok.Getter;
+import org.sophy.sophy.domain.Booktalk;
+import org.sophy.sophy.domain.Member;
+import org.sophy.sophy.domain.MemberBooktalk;
+
+import javax.validation.constraints.NotNull;
+
+@Getter
+public class BooktalkParticipationRequestDto {
+    @NotNull
+    private Long booktalkId;
+    @NotNull
+    private Long memberId;
+
+    public MemberBooktalk toMemberBooktalk(Booktalk booktalk, Member member) {
+        return MemberBooktalk.builder()
+                .booktalk(booktalk)
+                .member(member)
+                .build();
+    }
+}

src/main/java/org/sophy/sophy/domain/Member.java

@@ -1,19 +1,23 @@
 package org.sophy.sophy.domain;
 
-import lombok.*;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
 import org.sophy.sophy.controller.dto.request.MemberAdditionalInfoDto;
 import org.sophy.sophy.domain.dto.MyInfoDto;
 
 import javax.persistence.*;
-import java.util.ArrayList;
-import java.util.List;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Pattern;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
 
 @Entity
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-public class Member extends AuditingTimeEntity{
+public class Member extends AuditingTimeEntity {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     @Column(name = "member_id")
@@ -94,4 +98,10 @@ public void patchMyInfo(MyInfoDto myInfoDto) {
         this.myCity = myInfoDto.getCity();
         this.marketingAgree = myInfoDto.getMarketingAgree();
     }
+
+    public void addUserBooktalkandSortByStartDate(MemberBooktalk memberBooktalk) {
+        this.getUserBookTalkList().add(memberBooktalk);
+        // 시작날짜순으로 정렬(예정된 북토크)
+        this.getUserBookTalkList().sort(Comparator.comparing(o -> o.getBooktalk().getStartDate()));
+    }
 }

src/main/java/org/sophy/sophy/domain/MemberBooktalk.java

@@ -27,8 +27,9 @@ public class MemberBooktalk extends AuditingTimeEntity {
     // 연관 관계 편의 메서드
     public void setMember(Member member) {
         this.member = member;
-        if(!member.getUserBookTalkList().contains(this)) {
-            member.getUserBookTalkList().add(this);
+        if (!member.getUserBookTalkList().contains(this)) {
+            // 시작날짜로 순으로 정렬해서 추가
+            member.addUserBooktalkandSortByStartDate(this);
         }
     }
 
@@ -41,7 +42,7 @@ public void setBooktalk(Booktalk booktalk) {
 
     @Builder
     public MemberBooktalk(Member member, Booktalk booktalk) {
-        setMember(member);
         setBooktalk(booktalk);
+        setMember(member);
     }
 }

src/main/java/org/sophy/sophy/exception/SuccessStatus.java

@@ -32,6 +32,8 @@ public enum SuccessStatus {
      */
     SIGNUP_SUCCESS(HttpStatus.CREATED, "회원가입이 완료되었습니다."),
     CREATE_BOOKTALK_SUCCESS(HttpStatus.CREATED, "북토크를 생성했습니다."),
+    CREATE_BOOKTALK_PARTICIPATION_SUCCESS(HttpStatus.CREATED, "북토크 참여 신청을 성공했습니다."),
+
     ;
 
     private final HttpStatus httpStatus;

src/main/java/org/sophy/sophy/infrastructure/MemberBooktalkRepository.java

@@ -0,0 +1,9 @@
+package org.sophy.sophy.infrastructure;
+
+import org.sophy.sophy.domain.MemberBooktalk;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface MemberBooktalkRepository extends JpaRepository<MemberBooktalk, Long> {
+}

src/main/java/org/sophy/sophy/service/BooktalkService.java

@@ -2,6 +2,7 @@
 
 import lombok.RequiredArgsConstructor;
 import org.sophy.sophy.controller.dto.BooktalkUpdateDto;
+import org.sophy.sophy.controller.dto.request.BooktalkParticipationRequestDto;
 import org.sophy.sophy.controller.dto.request.BooktalkRequestDto;
 import org.sophy.sophy.controller.dto.request.CityRequestDto;
 import org.sophy.sophy.controller.dto.response.*;
@@ -10,6 +11,7 @@
 import org.sophy.sophy.exception.model.ForbiddenException;
 import org.sophy.sophy.exception.model.NotFoundException;
 import org.sophy.sophy.infrastructure.BooktalkRepository;
+import org.sophy.sophy.infrastructure.MemberBooktalkRepository;
 import org.sophy.sophy.infrastructure.MemberRepository;
 import org.sophy.sophy.infrastructure.PlaceRepository;
 import org.springframework.stereotype.Service;
@@ -25,6 +27,7 @@ public class BooktalkService {
     private final BooktalkRepository booktalkRepository;
     private final PlaceRepository placeRepository;
     private final MemberRepository memberRepository;
+    private final MemberBooktalkRepository memberBooktalkRepository;
 
     @Transactional
     public BooktalkCreateResponseDto createBooktalk(BooktalkRequestDto booktalkRequestDto) {
@@ -60,6 +63,15 @@ public BooktalkDetailResponseDto getBooktalkDetail(Long booktalkId) {
         return BooktalkDetailResponseDto.of(booktalk);
     }
 
+    @Transactional
+    public void postBooktalkParticipation(BooktalkParticipationRequestDto booktalkParticipationRequestDto) {
+        Member member = getMemberById(booktalkParticipationRequestDto.getMemberId());
+        Booktalk booktalk = getBooktalkById(booktalkParticipationRequestDto.getBooktalkId());
+        // 복합키?
+        MemberBooktalk memberBooktalk = booktalkParticipationRequestDto.toMemberBooktalk(booktalk, member);
+        memberBooktalkRepository.save(memberBooktalk);
+    }
+
     public List<BooktalkDeadlineUpcomingDto> getBooktalkDeadlineUpcoming() {
         List<Place> placeList = placeRepository.findAll();
 
@@ -78,6 +90,7 @@ public List<BooktalkDeadlineUpcomingDto> getBooktalkDeadlineUpcoming() {
         booktalkList.sort(Comparator.comparing(BooktalkDeadlineUpcomingDto::getEndDate));
 
         return booktalkList;
+
     }
 
     private Member getMemberById(Long memberId) {