优化目录结构

backend/src/main/java/com/openisle/controller/DraftController.java

@@ -0,0 +1,67 @@
+package com.openisle.controller;
+
+import com.openisle.model.Draft;
+import com.openisle.service.DraftService;
+import lombok.Data;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/api/drafts")
+@RequiredArgsConstructor
+public class DraftController {
+    private final DraftService draftService;
+
+    @PostMapping
+    public ResponseEntity<DraftDto> saveDraft(@RequestBody DraftRequest req, Authentication auth) {
+        Draft draft = draftService.saveDraft(auth.getName(), req.getCategoryId(), req.getTitle(), req.getContent(), req.getTagIds());
+        return ResponseEntity.ok(toDto(draft));
+    }
+
+    @GetMapping("/me")
+    public ResponseEntity<DraftDto> getMyDraft(Authentication auth) {
+        return draftService.getDraft(auth.getName())
+                .map(d -> ResponseEntity.ok(toDto(d)))
+                .orElseGet(() -> ResponseEntity.noContent().build());
+    }
+
+    @DeleteMapping("/me")
+    public ResponseEntity<?> deleteMyDraft(Authentication auth) {
+        draftService.deleteDraft(auth.getName());
+        return ResponseEntity.ok().build();
+    }
+
+    private DraftDto toDto(Draft draft) {
+        DraftDto dto = new DraftDto();
+        dto.setId(draft.getId());
+        dto.setTitle(draft.getTitle());
+        dto.setContent(draft.getContent());
+        if (draft.getCategory() != null) {
+            dto.setCategoryId(draft.getCategory().getId());
+        }
+        dto.setTagIds(draft.getTags().stream().map(com.openisle.model.Tag::getId).collect(Collectors.toList()));
+        return dto;
+    }
+
+    @Data
+    private static class DraftRequest {
+        private String title;
+        private String content;
+        private Long categoryId;
+        private List<Long> tagIds;
+    }
+
+    @Data
+    private static class DraftDto {
+        private Long id;
+        private String title;
+        private String content;
+        private Long categoryId;
+        private List<Long> tagIds;
+    }
+}