Feat: 가입 신청 취소 API 추가

Author: stoneTiger0912

src/main/java/flipnote/group/adapter/in/web/JoinController.java

@@ -2,6 +2,7 @@
 
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PatchMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -16,9 +17,11 @@
 import flipnote.group.api.dto.response.ApplicationFormResponseDto;
 import flipnote.group.api.dto.response.FindJoinFormListResponseDto;
 import flipnote.group.api.dto.response.JoinRespondResponseDto;
+import flipnote.group.application.port.in.DeleteJoinUseCase;
 import flipnote.group.application.port.in.JoinRespondUseCase;
 import flipnote.group.application.port.in.JoinUseCase;
 import flipnote.group.application.port.in.command.ApplicationFormCommand;
+import flipnote.group.application.port.in.command.DeleteJoinCommand;
 import flipnote.group.application.port.in.command.FindJoinFormCommand;
 import flipnote.group.application.port.in.command.JoinRespondCommand;
 import flipnote.group.application.port.in.result.ApplicationFormResult;
@@ -34,6 +37,7 @@ public class JoinController {
 
 	private final JoinUseCase joinUseCase;
 	private final JoinRespondUseCase joinRespondUseCase;
+	private final DeleteJoinUseCase deleteJoinUseCase;
 
 	/**
 	 * 가입 신청 요청
@@ -101,4 +105,23 @@ public ResponseEntity<JoinRespondResponseDto> respondToJoinRequest(
 		return ResponseEntity.ok(res);
 	}
 
+	/**
+	 * 가입 신청 취소
+	 * @param userId
+	 * @param groupId
+	 * @param joinId
+	 * @return
+	 */
+	@DeleteMapping("/{joinId}")
+	public ResponseEntity<Void> deleteJoin(
+		@RequestHeader("X-USER-ID") Long userId,
+		@PathVariable("groupId") Long groupId,
+		@PathVariable("joinId") Long joinId
+	) {
+		DeleteJoinCommand cmd = new DeleteJoinCommand(userId, joinId);
+		deleteJoinUseCase.deleteJoin(cmd);
+
+		return ResponseEntity.ok().build();
+	}
+
 }

src/main/java/flipnote/group/adapter/out/persistence/JoinRepositoryAdapter.java

@@ -55,4 +55,9 @@ public List<JoinEntity> findMyJoinList(Long userId) {
 
 		return joinList;
 	}
+
+	@Override
+	public void delete(JoinEntity join) {
+		joinRepository.delete(join);
+	}
 }

src/main/java/flipnote/group/application/port/in/DeleteJoinUseCase.java

@@ -0,0 +1,7 @@
+package flipnote.group.application.port.in;
+
+import flipnote.group.application.port.in.command.DeleteJoinCommand;
+
+public interface DeleteJoinUseCase {
+	void deleteJoin(DeleteJoinCommand cmd);
+}

src/main/java/flipnote/group/application/port/in/command/DeleteJoinCommand.java

@@ -0,0 +1,7 @@
+package flipnote.group.application.port.in.command;
+
+public record DeleteJoinCommand(
+	Long userId,
+	Long joinId
+) {
+}

src/main/java/flipnote/group/application/port/out/JoinRepositoryPort.java

@@ -16,4 +16,6 @@ public interface JoinRepositoryPort {
 	JoinEntity updateJoin(JoinEntity join);
 
 	List<JoinEntity> findMyJoinList(Long userId);
+
+	void delete(JoinEntity join);
 }

src/main/java/flipnote/group/application/service/DeleteJoinService.java

@@ -0,0 +1,31 @@
+package flipnote.group.application.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import flipnote.group.adapter.out.entity.JoinEntity;
+import flipnote.group.adapter.out.persistence.JoinRepositoryAdapter;
+import flipnote.group.application.port.in.DeleteJoinUseCase;
+import flipnote.group.application.port.in.command.DeleteJoinCommand;
+import flipnote.group.domain.policy.BusinessException;
+import flipnote.group.domain.policy.ErrorCode;
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class DeleteJoinService implements DeleteJoinUseCase {
+
+	private final JoinRepositoryAdapter joinRepository;
+
+	@Override
+	@Transactional
+	public void deleteJoin(DeleteJoinCommand cmd) {
+
+		JoinEntity join = joinRepository.findJoin(cmd.joinId());
+
+		if(!join.getUserId().equals(cmd.userId())) {
+			throw new BusinessException(ErrorCode.PERMISSION_DENIED);
+		}
+		joinRepository.delete(join);
+	}
+}

src/main/java/flipnote/group/domain/model/BaseEntity.java

@@ -2,6 +2,7 @@
 
 import java.time.LocalDateTime;
 
+import org.hibernate.annotations.SQLRestriction;
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.annotation.LastModifiedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
@@ -14,6 +15,7 @@
 @Getter
 @MappedSuperclass
 @EntityListeners(AuditingEntityListener.class)
+@SQLRestriction("deleted_at IS NULL")
 public abstract class BaseEntity {
 
 	@CreatedDate