feat(post) : #75 - 게시글 작성하기 이미지 s3 업로드

Author: youngseo22

src/main/java/com/example/FixLog/controller/PostController.java

@@ -4,15 +4,19 @@
 import com.example.FixLog.dto.Response;
 import com.example.FixLog.dto.post.PostResponseDto;
 import com.example.FixLog.service.PostService;
+import com.example.FixLog.service.S3Service;
 import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
 
 @RestController
 @RequestMapping("/posts")
 public class PostController {
     private final PostService postService;
+    private final S3Service s3Service;
 
-    public PostController(PostService postService){
+    public PostController(PostService postService, S3Service s3Service){
         this.postService = postService;
+        this.s3Service = s3Service;
     }
 
     @PostMapping
@@ -21,6 +25,12 @@ public Response<Object> createPost(@RequestBody PostRequestDto postRequestDto){
         return Response.success("게시글 작성 성공.", null);
     }
 
+    @PostMapping("/images")
+    public Response<String> uploadImage(@RequestPart("imageFile") MultipartFile imageFile){
+        String markdownImage = postService.uploadImage(imageFile);
+        return Response.success("이미지 마크다운 형식으로 변환", markdownImage);
+    }
+
     @GetMapping("/{postId}")
     public Response<Object> viewPost(@PathVariable("postId") Long postId){
         PostResponseDto viewPost = postService.viewPost(postId);

src/main/java/com/example/FixLog/exception/ErrorCode.java

@@ -28,7 +28,8 @@ public enum ErrorCode {
     SAME_AS_OLD_PASSWORD(HttpStatus.BAD_REQUEST, "다른 비밀번호 입력 바랍니다."),
     UNAUTHORIZED(HttpStatus.UNAUTHORIZED, "권한이 없습니다."),
     INVALID_REQUEST(HttpStatus.BAD_REQUEST, "요청 데이터가 유효하지 않습니다."),
-    S3_UPLOAD_FAILED(HttpStatus.BAD_REQUEST, "S3 파일 업로드에 실패했습니다.");
+    S3_UPLOAD_FAILED(HttpStatus.BAD_REQUEST, "S3 파일 업로드에 실패했습니다."),
+    IMAGE_UPLOAD_FAILED(HttpStatus.NOT_FOUND, "이미지 파일이 업로드되지 않았습니다.");
 
     private final HttpStatus status;
     private final String message;

src/main/java/com/example/FixLog/service/PostService.java

@@ -20,6 +20,7 @@
 import com.example.FixLog.repository.tag.TagRepository;
 import jakarta.transaction.Transactional;
 import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -36,16 +37,19 @@ public class PostService {
     private final TagRepository tagRepository;
     private final BookmarkFolderRepository bookmarkFolderRepository;
     private final MemberService memberService;
+    private final S3Service s3Service;
 
     public PostService(PostRepository postRepository, PostLikeRepository postLikeRepository,
                        BookmarkRepository bookmarkRepository, TagRepository tagRepository,
-                       BookmarkFolderRepository bookmarkFolderRepository, MemberService memberService){
+                       BookmarkFolderRepository bookmarkFolderRepository, MemberService memberService,
+                       S3Service s3Service){
         this.postRepository = postRepository;
         this.postLikeRepository = postLikeRepository;
         this.bookmarkRepository = bookmarkRepository;
         this.tagRepository = tagRepository;
         this.bookmarkFolderRepository = bookmarkFolderRepository;
         this.memberService = memberService;
+        this.s3Service = s3Service;
     }
 
     // 이미지 null일 때 default 사진으로 변경 (프로필 사진,
@@ -83,6 +87,7 @@ public void createPost(PostRequestDto postRequestDto){
                 .editedAt(LocalDateTime.now())
                 .postTags(new ArrayList<>())
                 .build();
+        // Todo : 여기서 사진 발생하면 s3 처리하기
 
         // 태그 저장
         for (Tag tag : tags) {
@@ -92,6 +97,16 @@ public void createPost(PostRequestDto postRequestDto){
         postRepository.save(newPost);
     }
 
+    // 이미지 파일 마크다운으로 변경
+    public String uploadImage(MultipartFile imageFile){
+        if (imageFile == null || imageFile.isEmpty()){
+            throw new CustomException(ErrorCode.IMAGE_UPLOAD_FAILED);
+        }
+
+        String imageUrl = s3Service.upload(imageFile, "post-image");
+        return "![image](" + imageUrl + ")";
+    }
+
     // 태그 다 선택 했는지
     private List<Tag> fetchAndValidateTags(List<Long> tagIds){
         // 태그 ID로 Tag 엔티티 조회