add: 티켓팅 중복 생성에 관한 예외 추가

Author: kitaee

src/main/java/TiCatch/backend/domain/ticketing/service/TicketingService.java

@@ -35,6 +35,7 @@
 import java.util.List;
 import java.util.Map;
 import java.time.LocalDateTime;
+import java.util.Optional;
 
 import static TiCatch.backend.domain.ticketing.entity.TicketingLevel.*;
 import static TiCatch.backend.global.constant.TicketingConstants.*;
@@ -79,6 +80,10 @@ public void loadSectionInfo() {
 
     @Transactional
     public Mono<TicketingResponseDto> createTicket(CreateTicketingDto createTicketingDto, User user) {
+        ticketingRepository.findByUserAndTicketingStatusIn(user, List.of(TicketingStatus.IN_PROGRESS, TicketingStatus.WAITING))
+                .ifPresent(t -> { throw new DuplicatedTicketException(); });
+
+
         Ticketing newTicketing = ticketingRepository.save(
                 Ticketing.fromDtoToEntity(createTicketingDto, user, TicketingStatus.WAITING)
         );

src/main/java/TiCatch/backend/global/exception/DuplicatedTicketException.java

@@ -0,0 +1,12 @@
+package TiCatch.backend.global.exception;
+
+public class DuplicatedTicketException extends RuntimeException {
+
+    public DuplicatedTicketException() {
+        super(ExceptionCode.DUPLICATED_TICKET_EXCEPTION.getErrorMessage());
+    }
+
+    public DuplicatedTicketException(String message) {
+        super(message);
+    }
+}

src/main/java/TiCatch/backend/global/exception/ExceptionCode.java

@@ -18,6 +18,7 @@ public enum ExceptionCode {
 	NOT_EXIST_TICKET_EXCEPTION(441, "티켓팅이 존재하지 않습니다."),
 	NOT_IN_PROGRESS_TICKET_EXCEPTION(442, "진행 중인 티켓팅이 아닙니다."),
 	NOT_EXIST_IN_PROGRESS_TICKET_EXCEPTION(443, "진행 중인 티켓팅이 없습니다."),
+	DUPLICATED_TICKET_EXCEPTION(444, "티켓팅을 중복해서 생성할 수 없습니다."),
 
 	// RESERVATION
 	ALREADY_RESERVED_EXCEPTION(450, "이미 선점된 좌석입니다."),

src/main/java/TiCatch/backend/global/exception/ExceptionController.java

@@ -91,4 +91,9 @@ public ResponseResult JsonProcessException(JsonProcessException err) {
     public ResponseResult NotExistInProgressTicketException(NotExistInProgressTicketException err) {
         return ResponseResult.exceptionResponse(ExceptionCode.NOT_EXIST_IN_PROGRESS_TICKET_EXCEPTION, err.getMessage());
     }
+
+    @ExceptionHandler(DuplicatedTicketException.class)
+    public ResponseResult DuplicatedTicketException(DuplicatedTicketException err) {
+        return ResponseResult.exceptionResponse(ExceptionCode.DUPLICATED_TICKET_EXCEPTION, err.getMessage());
+    }
 }