Merge pull request #7 from KTB-HACKATHON-TEAM-FLIGHT/feature/posts-li…

…st-by-session

Feature: PPT 목록 및 반환 API 구현

src/main/java/team/flight/backend/controller/PostController.java

@@ -5,11 +5,16 @@
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 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.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 import team.flight.backend.dto.FirstPostRequest;
+import team.flight.backend.dto.PostDetailResponse;
+import team.flight.backend.dto.PostsResponse;
 import team.flight.backend.service.PostService;
 import team.flight.backend.service.dto.FirstResponse;
 
@@ -27,4 +32,16 @@ public ResponseEntity<FirstResponse> sendFirstRequest(@RequestBody FirstPostRequ
         return ResponseEntity.ok()
                 .body(postService.sendUserFirstRequest(UUID.fromString(request.sessionId()), request.postId(), request.request()));
     }
+
+    @GetMapping
+    public ResponseEntity<PostsResponse> getPosts(@RequestParam("sessionId") String sessionId) {
+        return ResponseEntity.ok().body(postService.findAllPostsBy(UUID.fromString(sessionId)));
+    }
+
+    @Operation(summary = "특정 게시글 결과 조회 API")
+    @GetMapping("/{id}")
+    public ResponseEntity<PostDetailResponse> getPostDetail(@PathVariable("id") Long postId,
+                                                            @RequestParam("sessionId") String sessionId) {
+        return ResponseEntity.ok().body(postService.findPostsBy(postId, UUID.fromString(sessionId)));
+    }
 }

src/main/java/team/flight/backend/dto/PostDetailResponse.java

@@ -0,0 +1,8 @@
+package team.flight.backend.dto;
+
+public record PostDetailResponse(
+        Long postId,
+        String request,
+        String result
+) {
+}

src/main/java/team/flight/backend/dto/PostInfoResponse.java

@@ -0,0 +1,12 @@
+package team.flight.backend.dto;
+
+import team.flight.backend.entity.Post;
+
+public record PostInfoResponse(
+        Long postId,
+        String request
+) {
+    public static PostInfoResponse from(Post post) {
+        return new PostInfoResponse(post.getId(), post.getRequest());
+    }
+}

src/main/java/team/flight/backend/dto/PostsResponse.java

@@ -0,0 +1,10 @@
+package team.flight.backend.dto;
+
+import java.util.List;
+import java.util.UUID;
+
+public record PostsResponse(
+        UUID sessionId,
+        List<PostInfoResponse> posts
+) {
+}

src/main/java/team/flight/backend/global/exception/ErrorCode.java

@@ -0,0 +1,16 @@
+package team.flight.backend.global.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+@AllArgsConstructor
+public enum ErrorCode {
+
+    ENTITY_NOT_FOUND(HttpStatus.NOT_FOUND, 4004, "해당 객체가 존재하지 않습니다.")
+    ;
+    private final HttpStatus httpStatus;
+    private final int code;
+    private final String message;
+}

src/main/java/team/flight/backend/global/exception/ErrorResponse.java

@@ -0,0 +1,28 @@
+package team.flight.backend.global.exception;
+
+import jakarta.servlet.http.HttpServletRequest;
+
+public record ErrorResponse(
+        int code,
+        String message,
+        String method,
+        String requestURI
+) {
+    public static ErrorResponse of(ErrorCode errorCode, HttpServletRequest request) {
+        return new ErrorResponse(
+                errorCode.getCode(),
+                errorCode.getMessage(),
+                request.getMethod(),
+                request.getRequestURI()
+        );
+    }
+
+    public static ErrorResponse of(HttpServletRequest request, ErrorCode errorCode, final String errorMessage) {
+        return new ErrorResponse(
+                errorCode.getCode(),
+                errorMessage,
+                request.getMethod(),
+                request.getRequestURI()
+        );
+    }
+}

src/main/java/team/flight/backend/global/exception/GlobalExceptionHandler.java

@@ -1,9 +1,23 @@
 package team.flight.backend.global.exception;
 
+import jakarta.persistence.EntityNotFoundException;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
 
+@Slf4j
 @RestControllerAdvice
 public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
 
+    @ExceptionHandler(EntityNotFoundException.class)
+    public ResponseEntity<ErrorResponse> handleEntityNotFoundException(HttpServletRequest request,
+                                                                       EntityNotFoundException ex) {
+        log.error("[Entity Not Found Exception 발생]: {}", ex.getMessage());
+        log.error("[발생 위치: {} {}]", request.getMethod(), request.getRequestURI());
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(ErrorResponse.of(ErrorCode.ENTITY_NOT_FOUND, request));
+    }
 }

src/main/java/team/flight/backend/repository/PostRepository.java

@@ -1,10 +1,13 @@
 package team.flight.backend.repository;
 
+import java.util.List;
 import java.util.Optional;
 import java.util.UUID;
 import org.springframework.data.jpa.repository.JpaRepository;
 import team.flight.backend.entity.Post;
 
 public interface PostRepository extends JpaRepository<Post, Long> {
     Optional<Post> findByIdAndSessionId(Long postId, UUID sessionId);
+
+    List<Post> findAllBySessionId(UUID sessionId);
 }

src/main/java/team/flight/backend/service/PostService.java

@@ -1,9 +1,14 @@
 package team.flight.backend.service;
 
+import jakarta.persistence.EntityNotFoundException;
+import java.util.List;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import team.flight.backend.dto.PostDetailResponse;
+import team.flight.backend.dto.PostInfoResponse;
+import team.flight.backend.dto.PostsResponse;
 import team.flight.backend.entity.Post;
 import team.flight.backend.repository.PostRepository;
 import team.flight.backend.service.dto.FirstResponse;
@@ -28,4 +33,20 @@ public FirstResponse sendUserFirstRequest(UUID sessionId, Long postId, String re
         postRepository.save(post);
         return FirstResponse.from(post);
     }
+
+    @Transactional(readOnly = true)
+    public PostsResponse findAllPostsBy(UUID sessionId) {
+        List<PostInfoResponse> response = postRepository.findAllBySessionId(sessionId).stream()
+                .map(PostInfoResponse::from)
+                .toList();
+        return new PostsResponse(sessionId, response);
+    }
+
+    @Transactional(readOnly = true)
+    public PostDetailResponse findPostsBy(Long postId, UUID sessionId) {
+        Post post = postRepository.findByIdAndSessionId(postId, sessionId)
+                .orElseThrow(() -> new EntityNotFoundException("해당 게시글을 찾을 수 없습니다."));
+
+        return new PostDetailResponse(post.getId(), post.getRequest(), post.getResult());
+    }
 }