[BE] feat: 방 신청 구현(#32)

backend/src/main/java/corea/WebConfig.java

@@ -1,12 +1,20 @@
 package corea;
 
+import corea.auth.resolver.LoginMemberArgumentResolver;
+import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.web.servlet.config.annotation.CorsRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
+import java.util.List;
+
 @Configuration
+@RequiredArgsConstructor
 public class WebConfig implements WebMvcConfigurer {
 
+    private final LoginMemberArgumentResolver loginMemberArgumentResolver;
+
     @Override
     public void addCorsMappings(CorsRegistry registry) {
         registry.addMapping("/**")
@@ -15,4 +23,9 @@ public void addCorsMappings(CorsRegistry registry) {
                 .allowCredentials(true)
                 .maxAge(3000);
     }
+
+    @Override
+    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers) {
+        resolvers.add(loginMemberArgumentResolver);
+    }
 }

backend/src/main/java/corea/auth/RequestHandler.java

@@ -0,0 +1,14 @@
+package corea.auth;
+
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.stereotype.Component;
+
+@Component
+public class RequestHandler {
+
+    private static final String AUTHORIZATION_HEADER = "Authorization";
+
+    public String extract(HttpServletRequest request) {
+        return request.getHeader(AUTHORIZATION_HEADER);
+    }
+}

backend/src/main/java/corea/auth/annotation/LoginUser.java

@@ -0,0 +1,14 @@
+package corea.auth.annotation;
+
+import io.swagger.v3.oas.annotations.Hidden;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.PARAMETER)
+@Retention(RetentionPolicy.RUNTIME)
+@Hidden()
+public @interface LoginUser {
+}

backend/src/main/java/corea/auth/domain/AuthInfo.java

@@ -0,0 +1,34 @@
+package corea.auth.domain;
+
+import corea.member.domain.Member;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+import java.util.Objects;
+
+@RequiredArgsConstructor
+@Getter
+public class AuthInfo {
+
+    private final Long id;
+
+    private final String name;
+
+    private final String email;
+
+    public static AuthInfo from(Member member){
+        return new AuthInfo(member.getId(), member.getUserName(), member.getEmail());
+    }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (!(o instanceof AuthInfo authInfo)) return false;
+        return Objects.equals(id, authInfo.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(id);
+    }
+}

backend/src/main/java/corea/auth/resolver/LoginMemberArgumentResolver.java

@@ -0,0 +1,41 @@
+package corea.auth.resolver;
+
+import corea.auth.RequestHandler;
+import corea.auth.annotation.LoginUser;
+import corea.auth.domain.AuthInfo;
+import corea.exception.CoreaException;
+import corea.exception.ExceptionType;
+import corea.member.domain.Member;
+import corea.member.repository.MemberRepository;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import org.springframework.core.MethodParameter;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.support.WebDataBinderFactory;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.method.support.ModelAndViewContainer;
+
+@Component
+@RequiredArgsConstructor
+public class LoginMemberArgumentResolver implements HandlerMethodArgumentResolver {
+
+    private final RequestHandler requestHandler;
+    private final MemberRepository memberRepository;
+
+    @Override
+    public boolean supportsParameter(MethodParameter parameter) {
+        return parameter.hasParameterAnnotation(LoginUser.class);
+    }
+
+    @Override
+    public AuthInfo resolveArgument(MethodParameter parameter,
+                                    ModelAndViewContainer mavContainer,
+                                    NativeWebRequest webRequest,
+                                    WebDataBinderFactory binderFactory) {
+        HttpServletRequest request = (HttpServletRequest) webRequest.getNativeRequest();
+        Member member = memberRepository.findByEmail(requestHandler.extract(request))
+                .orElseThrow(()-> new CoreaException(ExceptionType.AUTHORIZATION_ERROR));
+        return AuthInfo.from(member);
+    }
+}

backend/src/main/java/corea/exception/CoreaException.java

@@ -1,9 +1,18 @@
 package corea.exception;
 
-public class CoreaException extends Exception {
+import org.springframework.http.HttpStatus;
+
+public class CoreaException extends RuntimeException {
+
     private final ExceptionType exceptionType;
 
     public CoreaException(ExceptionType exceptionType) {
+        super(exceptionType.getMessage());
+        this.exceptionType = exceptionType;
+    }
+
+    public CoreaException(ExceptionType exceptionType, String message) {
+        super(message);
         this.exceptionType = exceptionType;
     }
 
@@ -12,7 +21,12 @@ public CoreaException(ExceptionType exceptionType, Throwable cause) {
         this.exceptionType = exceptionType;
     }
 
-    public ExceptionType getExceptionType() {
-        return exceptionType;
+    public HttpStatus getHttpStatus() {
+        return exceptionType.getHttpStatus();
+    }
+
+    @Override
+    public String getMessage() {
+        return exceptionType.getMessage();
     }
 }

backend/src/main/java/corea/exception/ExceptionResponseHandler.java

@@ -0,0 +1,25 @@
+package corea.exception;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+@Slf4j
+@ControllerAdvice
+public class ExceptionResponseHandler {
+
+    @ExceptionHandler(CoreaException.class)
+    public ResponseEntity<ErrorResponse> handleCoreaException(final CoreaException e) {
+        log.debug("Corea exception [statusCode = {}, errorMessage = {}, cause = {}]", e.getHttpStatus(), e.getMessage(), e.getCause());
+        return ResponseEntity.status(e.getHttpStatus())
+                .body(new ErrorResponse(e.getMessage()));
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<ErrorResponse> handleException(final Exception e) {
+        log.debug("Server exception [errorMessage = {}, cause = {}]", e.getMessage(), e.getCause());
+        return ResponseEntity.internalServerError()
+                .body(new ErrorResponse(e.getMessage()));
+    }
+}

backend/src/main/java/corea/exception/ExceptionType.java

@@ -3,6 +3,10 @@
 import org.springframework.http.HttpStatus;
 
 public enum ExceptionType {
+
+    NOT_FOUND_ERROR(HttpStatus.NOT_FOUND,"해당하는 값이 없습니다."),
+    AUTHORIZATION_ERROR(HttpStatus.UNAUTHORIZED,"인증에 실패했습니다."),
+    ALREADY_APPLY(HttpStatus.BAD_REQUEST,"해당 방에 이미 참여했습니다"),
     SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR,"서버에 문제가 발생했습니다.");
     private final HttpStatus httpStatus;
     private final String message;

backend/src/main/java/corea/matching/controller/ParticipateController.java

@@ -0,0 +1,27 @@
+package corea.matching.controller;
+
+import corea.auth.annotation.LoginUser;
+import corea.auth.domain.AuthInfo;
+import corea.matching.dto.ParticipationRequest;
+import corea.matching.service.ParticipationService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/participate")
+@RequiredArgsConstructor
+public class ParticipateController implements ParticipationControllerSpecification {
+
+    private final ParticipationService participationService;
+
+    @PostMapping("/{id}")
+    public ResponseEntity<Void> participate(@PathVariable long id, @LoginUser AuthInfo authInfo) {
+        participationService.participate(new ParticipationRequest(id, authInfo.getId()));
+        return ResponseEntity.ok()
+                .build();
+    }
+}

backend/src/main/java/corea/matching/controller/ParticipationControllerSpecification.java

@@ -0,0 +1,24 @@
+package corea.matching.controller;
+
+import corea.auth.domain.AuthInfo;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.ExampleObject;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import org.springframework.http.ResponseEntity;
+
+public interface ParticipationControllerSpecification {
+
+    @ApiResponses(
+            value = {
+                    @ApiResponse(responseCode = "404", content = @Content(mediaType = "application/json", examples = {
+                            @ExampleObject(name = "해당하는 방이 없는 경우", value = """
+                    {
+                        "message": "1에 해당하는 방 없습니다."
+                    }
+                    """)
+                    })),
+            }
+    )
+    ResponseEntity<Void> participate(long id, AuthInfo authInfo);
+}

backend/src/main/java/corea/matching/repository/ParticipationRepository.java

@@ -6,5 +6,8 @@
 import java.util.List;
 
 public interface ParticipationRepository extends JpaRepository<Participation, Long> {
+
     List<Participation> findAllByRoomId(long roomId);
+
+    boolean existsByRoomIdAndMemberId(long roomId, long memberId);
 }

backend/src/main/java/corea/matching/service/ParticipationService.java

@@ -1,10 +1,12 @@
 package corea.matching.service;
 
+import corea.exception.CoreaException;
+import corea.exception.ExceptionType;
 import corea.matching.domain.Participation;
 import corea.matching.dto.ParticipationRequest;
 import corea.matching.dto.ParticipationResponse;
-import corea.member.repository.MemberRepository;
 import corea.matching.repository.ParticipationRepository;
+import corea.member.repository.MemberRepository;
 import corea.room.repository.RoomRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -28,10 +30,13 @@ public ParticipationResponse participate(final ParticipationRequest request) {
 
     private void validateIdExist(final long roomId, final long memberId) {
         if (!roomRepository.existsById(roomId)) {
-            throw new IllegalArgumentException(String.format("해당 Id의 방이 없어 참여할 수 없습니다. 입력된 방 Id=%d", roomId));
+            throw new CoreaException(ExceptionType.NOT_FOUND_ERROR, String.format("%d에 해당하는 방이 없습니다.", roomId));
         }
         if (!memberRepository.existsById(memberId)) {
-            throw new IllegalArgumentException(String.format("해당 Id의 멤버가 없어 방에 참여할 수 없습니다. 입력된 멤버 Id=%d", memberId));
+            throw new CoreaException(ExceptionType.NOT_FOUND_ERROR, String.format("%d에 해당하는 멤버가 없습니다.", memberId));
+        }
+        if (participationRepository.existsByRoomIdAndMemberId(roomId, memberId)) {
+            throw new CoreaException(ExceptionType.ALREADY_APPLY);
         }
     }
 }

backend/src/main/java/corea/room/controller/RoomController.java

@@ -7,21 +7,23 @@
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
+@RequestMapping("/rooms")
 @RequiredArgsConstructor
 public class RoomController {
 
     private final RoomService roomService;
 
-    @GetMapping("/rooms/{id}")
+    @GetMapping("/{id}")
     public ResponseEntity<RoomResponse> room(@PathVariable final long id) {
         final RoomResponse response = roomService.findOne(id);
         return ResponseEntity.ok(response);
     }
 
-    @GetMapping("/rooms")
+    @GetMapping
     public ResponseEntity<RoomResponses> rooms() {
         final RoomResponses response = roomService.findAll();
         return ResponseEntity.ok(response);

backend/src/main/java/corea/room/domain/Room.java

@@ -40,6 +40,7 @@ public class Room {
     private int limitedParticipantsSize;
 
     @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "manager_id",foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
     private Member manager;
 
     private LocalDateTime recruitmentDeadline;

backend/src/main/java/corea/room/dto/RoomResponse.java

@@ -20,8 +20,11 @@ public record RoomResponse(
         LocalDateTime reviewDeadline
 ) {
 
-    //TODO 해당 객체를 사용한다면 반영
-    public static RoomResponse of(final Room room, final String author) {
-        return null;
+    public static RoomResponse of(final Room room) {
+        return new RoomResponse(
+                room.getId(), room.getTitle(), room.getContent(), room.getManager().getEmail(),
+                room.getRepositoryLink(), room.getThumbnailLink(), room.getMatchingSize(), List.of(room.getKeyword()),
+                room.getCurrentParticipantsSize(), room.getLimitedParticipantsSize(), room.getRecruitmentDeadline(), room.getReviewDeadline()
+        );
     }
 }

backend/src/main/java/corea/room/service/RoomService.java

@@ -1,6 +1,5 @@
 package corea.room.service;
 
-import corea.member.domain.Member;
 import corea.room.domain.Room;
 import corea.room.dto.RoomCreateRequest;
 import corea.room.dto.RoomResponse;
@@ -42,15 +41,8 @@ public RoomResponses findAll() {
                 .collect(collectingAndThen(toList(), RoomResponses::new));
     }
 
-    //TODO 해당 객체를 사용한다면 반영
     private RoomResponse toRoomResponse(final Room room) {
-        final Member member = null;
-        return RoomResponse.of(room, member.getEmail());
-    }
-
-    private Member getMember(final long memberId) {
-        return memberRepository.findById(memberId)
-                .orElseThrow(() -> new IllegalArgumentException(String.format("해당 Id의 멤버가 없습니다. 입력된 Id=%d", memberId)));
+        return RoomResponse.of(room);
     }
 
     private Room getRoom(final long roomId) {