예외 로직 구현

src/main/java/com/example/pnuunivmiryangcampus/librarySeat/LibrarySeat.java

@@ -31,4 +31,12 @@ private LibrarySeat(int seatNumber, String availability) {
     public static LibrarySeat of(int seatNumber, String availability) {
         return new LibrarySeat(seatNumber, availability);
     }
+
+    public void updateUnavailable() {
+        this.availability = "사용중";
+    }
+
+    public void updateAvailable() {
+        this.availability = "사용가능";
+    }
 }

src/main/java/com/example/pnuunivmiryangcampus/librarySeat/exception/LibrarySeatNotFoundException.java

@@ -0,0 +1,12 @@
+package com.example.pnuunivmiryangcampus.librarySeat.exception;
+
+import com.example.pnuunivmiryangcampus.support.exception.NotFoundException;
+
+public class LibrarySeatNotFoundException extends NotFoundException {
+
+    private static final String MESSAGE = "해당 좌석은 존재하지 않습니다.";
+
+    public LibrarySeatNotFoundException() {
+        super(MESSAGE);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/reservation/exception/DuplicateReservationException.java

@@ -0,0 +1,12 @@
+package com.example.pnuunivmiryangcampus.reservation.exception;
+
+import com.example.pnuunivmiryangcampus.support.exception.BadRequestException;
+
+public class DuplicateReservationException extends BadRequestException {
+
+    private static final String MESSAGE = "이미 예약된 좌석이 존재합니다.";
+
+    public DuplicateReservationException() {
+        super(MESSAGE);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/reservation/exception/ExpiredRenewalTimeException.java

@@ -0,0 +1,12 @@
+package com.example.pnuunivmiryangcampus.reservation.exception;
+
+import com.example.pnuunivmiryangcampus.support.exception.BadRequestException;
+
+public class ExpiredRenewalTimeException extends BadRequestException {
+
+    private static final String MESSAGE = "연장 가능 시간은 종료 시간의 30분 전입니다.";
+
+    public ExpiredRenewalTimeException() {
+        super(MESSAGE);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/reservation/exception/ReservationLimitExceededException.java

@@ -1,6 +1,8 @@
 package com.example.pnuunivmiryangcampus.reservation.exception;
 
-public class ReservationLimitExceededException extends IllegalArgumentException{
+import com.example.pnuunivmiryangcampus.support.exception.BadRequestException;
+
+public class ReservationLimitExceededException extends BadRequestException {
 
     private static final String MESSAGE = "연장 가능 횟수를 초과했습니다.";
 

src/main/java/com/example/pnuunivmiryangcampus/reservation/exception/ReservationNotFoundException.java

@@ -0,0 +1,12 @@
+package com.example.pnuunivmiryangcampus.reservation.exception;
+
+import com.example.pnuunivmiryangcampus.support.exception.NotFoundException;
+
+public class ReservationNotFoundException extends NotFoundException {
+
+    private static final String MESSAGE = "예약된 좌석을 찾을 수 없습니다.";
+
+    public ReservationNotFoundException() {
+        super(MESSAGE);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/reservation/service/ReservationService.java

@@ -1,16 +1,22 @@
 package com.example.pnuunivmiryangcampus.reservation.service;
 
+import com.example.pnuunivmiryangcampus.librarySeat.LibrarySeat;
+import com.example.pnuunivmiryangcampus.librarySeat.exception.LibrarySeatNotFoundException;
 import com.example.pnuunivmiryangcampus.librarySeat.repository.LibrarySeatRepository;
 import com.example.pnuunivmiryangcampus.reservation.Reservation;
 import com.example.pnuunivmiryangcampus.reservation.dto.ReservationDto;
 import com.example.pnuunivmiryangcampus.reservation.dto.response.ReservationRenewalResponse;
 import com.example.pnuunivmiryangcampus.reservation.dto.response.ReservationResponse;
+import com.example.pnuunivmiryangcampus.reservation.exception.DuplicateReservationException;
+import com.example.pnuunivmiryangcampus.reservation.exception.ExpiredRenewalTimeException;
 import com.example.pnuunivmiryangcampus.reservation.exception.ReservationLimitExceededException;
+import com.example.pnuunivmiryangcampus.reservation.exception.ReservationNotFoundException;
 import com.example.pnuunivmiryangcampus.reservation.repository.ReservationRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.time.LocalDateTime;
 import java.util.Optional;
 
 @RequiredArgsConstructor
@@ -23,15 +29,27 @@ public class ReservationService {
 
     @Transactional
     public void saveReservation(ReservationDto dto) {
+        checkDuplicateReservation(dto.userAccountId());
+
         reservationRepository.save(dto.toEntity());
+        LibrarySeat librarySeat = librarySeatRepository.findById(dto.librarySeatId()).orElseThrow(LibrarySeatNotFoundException::new);
+        librarySeat.updateUnavailable();
+    }
+
+    private void checkDuplicateReservation(Long userId) {
+        ReservationResponse reservationResponse = this.getReservationByUserId(userId);
+
+        if (reservationResponse != null) {
+            throw new DuplicateReservationException();
+        }
     }
 
     @Transactional(readOnly = true)
     public ReservationResponse getReservationByUserId(Long userId) {
         Optional<Reservation> reservation = reservationRepository.findByUserAccountId(userId);
 
         if (reservation.isPresent()) {
-            Long reservedSeatId = librarySeatRepository.findById(reservation.get().getLibrarySeatId()).orElseThrow().getId();
+            Long reservedSeatId = librarySeatRepository.findById(reservation.get().getLibrarySeatId()).orElseThrow(LibrarySeatNotFoundException::new).getId();
 
             return ReservationResponse.from(reservation.get(), reservedSeatId);
         }
@@ -41,14 +59,22 @@ public ReservationResponse getReservationByUserId(Long userId) {
 
     @Transactional
     public ReservationRenewalResponse updateReservationRenewalCount(Long reservationId) {
-        Reservation reservation = reservationRepository.findById(reservationId).orElseThrow();
+        Reservation reservation = reservationRepository.findById(reservationId).orElseThrow(ReservationNotFoundException::new);
+
+        checkRenewalTime(reservation);
 
         reservation.update(reservation.getEndAt().plusHours(3), reservation.getRenewalCount() + 1);
         checkRenewalCount(reservation);
 
         return ReservationRenewalResponse.from(reservation);
     }
 
+    private static void checkRenewalTime(Reservation reservation) {
+        if (LocalDateTime.now().isBefore(reservation.getEndAt().minusMinutes(30))) {
+            throw new ExpiredRenewalTimeException();
+        }
+    }
+
     private void checkRenewalCount(Reservation reservation) {
         if (reservation.getRenewalCount() > 4) {
             throw new ReservationLimitExceededException();
@@ -57,7 +83,15 @@ private void checkRenewalCount(Reservation reservation) {
 
     @Transactional
     public void deleteReservation(Long reservationId) {
-        reservationRepository.deleteById(reservationId);
+        reservationRepository.findById(reservationId)
+                .ifPresentOrElse(
+                        reservation -> {
+                            reservationRepository.deleteById(reservationId);
+                            LibrarySeat librarySeat = librarySeatRepository.findById(reservation.getLibrarySeatId()).orElseThrow(LibrarySeatNotFoundException::new);
+                            librarySeat.updateAvailable();
+                        },
+                        () -> { throw new ReservationNotFoundException(); }
+                );
     }
 }
 

src/main/java/com/example/pnuunivmiryangcampus/support/exception/BadRequestException.java

@@ -0,0 +1,8 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+public class BadRequestException extends BusinessException {
+
+    public BadRequestException(String message) {
+        super(message);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/exception/BusinessException.java

@@ -0,0 +1,8 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+public class BusinessException extends RuntimeException {
+
+    public BusinessException(String message) {
+        super(message);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/exception/ControllerAdvice.java

@@ -0,0 +1,35 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+public class ControllerAdvice {
+
+    @ExceptionHandler(NotFoundException.class)
+    public ResponseEntity<ErrorResponse> handleNotFoundException(NotFoundException e) {
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(new ErrorResponse(e.getMessage()));
+    }
+
+    @ExceptionHandler(BadRequestException.class)
+    public ResponseEntity<ErrorResponse> handleBadRequestException(BadRequestException e) {
+        return ResponseEntity.badRequest().body(new ErrorResponse(e.getMessage()));
+    }
+
+    @ExceptionHandler(ForbiddenException.class)
+    public ResponseEntity<ErrorResponse> handleForbiddenException(ForbiddenException e) {
+        return ResponseEntity.status(HttpStatus.FORBIDDEN).body(new ErrorResponse(e.getMessage()));
+    }
+
+    @ExceptionHandler(UnauthorizedException.class)
+    public ResponseEntity<ErrorResponse> handleUnauthorizedException(UnauthorizedException e) {
+        return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body(new ErrorResponse(e.getMessage()));
+    }
+
+    @ExceptionHandler(RuntimeException.class)
+    public ResponseEntity<ErrorResponse> handleRuntimeException(RuntimeException e) {
+        return ResponseEntity.internalServerError().body(new ErrorResponse("서버에 알 수 없는 문제가 발생했습니다."));
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/exception/ErrorResponse.java

@@ -0,0 +1,13 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+import lombok.Getter;
+
+@Getter
+public class ErrorResponse {
+
+    private final String message;
+
+    public ErrorResponse(String message) {
+        this.message = message;
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/exception/ForbiddenException.java

@@ -0,0 +1,8 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+public class ForbiddenException extends BusinessException {
+
+    public ForbiddenException(String message) {
+        super(message);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/exception/InternalException.java

@@ -0,0 +1,8 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+public class InternalException extends BusinessException {
+
+    public InternalException(String message) {
+        super(message);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/exception/NotFoundException.java

@@ -0,0 +1,8 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+public class NotFoundException extends BusinessException {
+
+    public NotFoundException(String message) {
+        super(message);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/exception/UnauthorizedException.java

@@ -0,0 +1,8 @@
+package com.example.pnuunivmiryangcampus.support.exception;
+
+public class UnauthorizedException extends BusinessException {
+
+    public UnauthorizedException(String message) {
+        super(message);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/token/JwtOIDCProvider.java

@@ -2,6 +2,9 @@
 
 import com.example.pnuunivmiryangcampus.auth.OIDCDecodePayload;
 import com.example.pnuunivmiryangcampus.auth.OIDCPublicKeyDto;
+import com.example.pnuunivmiryangcampus.support.token.exception.ExpiredTokenException;
+import com.example.pnuunivmiryangcampus.support.token.exception.InvalidTokenException;
+import com.example.pnuunivmiryangcampus.support.token.exception.JsonParsingException;
 import io.jsonwebtoken.Claims;
 import io.jsonwebtoken.ExpiredJwtException;
 import io.jsonwebtoken.Jws;
@@ -31,7 +34,7 @@ public String getKidFromTokenHeader(String token) {
             JSONObject jsonObject = new JSONObject(decodedHeader);
             return jsonObject.get(KID).toString();
         } catch (JSONException e) {
-            return e.toString();
+            throw new JsonParsingException(e.getMessage());
         }
     }
 
@@ -44,10 +47,10 @@ public Jws<Claims> getOIDCTokenJws(String token, OIDCPublicKeyDto oidcPublicKeyD
                     .build()
                     .parseSignedClaims(token);
         } catch (ExpiredJwtException e) {
-            throw new Exception500(e.getMessage());
+            throw new ExpiredTokenException();
         } catch (Exception e) {
             log.error(e.toString());
-            throw new Exception500(e.getMessage());
+            throw new InvalidTokenException();
         }
     }
 

src/main/java/com/example/pnuunivmiryangcampus/support/token/exception/ExpiredTokenException.java

@@ -0,0 +1,12 @@
+package com.example.pnuunivmiryangcampus.support.token.exception;
+
+import com.example.pnuunivmiryangcampus.support.exception.UnauthorizedException;
+
+public class ExpiredTokenException extends UnauthorizedException {
+
+    private static final String MESSAGE = "Token의 유효기간이 만료되었습니다.";
+
+    public ExpiredTokenException() {
+        super(MESSAGE);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/token/exception/InvalidTokenException.java

@@ -0,0 +1,12 @@
+package com.example.pnuunivmiryangcampus.support.token.exception;
+
+import com.example.pnuunivmiryangcampus.support.exception.UnauthorizedException;
+
+public class InvalidTokenException extends UnauthorizedException {
+
+    private static final String MESSAGE = "유효하지 않는 Token 입니다.";
+
+    public InvalidTokenException() {
+        super(MESSAGE);
+    }
+}

src/main/java/com/example/pnuunivmiryangcampus/support/token/exception/JsonParsingException.java

@@ -0,0 +1,12 @@
+package com.example.pnuunivmiryangcampus.support.token.exception;
+
+import com.example.pnuunivmiryangcampus.support.exception.InternalException;
+
+public class JsonParsingException extends InternalException {
+
+    private static final String MESSAGE = "JSON Parsing 과정에서 오류가 발생했습니다.";
+
+    public JsonParsingException(String message) {
+        super(MESSAGE + ": " + message);
+    }
+}