[Feature] #9 - 뉴스 관련 API 구현

src/main/java/dgu/newsee/domain/news/controller/UserNewsController.java

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+package dgu.newsee.domain.news.controller;
+
+import dgu.newsee.domain.news.dto.NewsDetailDTO;
+import dgu.newsee.domain.news.dto.NewsDTO;
+import dgu.newsee.domain.news.dto.SavedNewsDTO;
+import dgu.newsee.domain.news.service.NewsService;
+import dgu.newsee.domain.user.entity.Level;
+import dgu.newsee.domain.user.entity.User;
+import dgu.newsee.domain.user.repository.UserRepository;
+import dgu.newsee.global.exception.NewsException;
+import dgu.newsee.global.payload.ApiResponse;
+import dgu.newsee.global.payload.ResponseCode;
+import io.swagger.v3.oas.annotations.Operation;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/news")
+public class UserNewsController {
+
+    private final NewsService newsService;
+    private final UserRepository userRepository;
+
+    @GetMapping
+    @Operation(summary = "전체 뉴스 조회 (비회원은 중 레벨)")
+    public ApiResponse<List<NewsDTO>> getAllNews(Authentication authentication) {
+        Long userId = extractUserId(authentication);
+        return newsService.getAllNews(userId, null);
+    }
+
+    @GetMapping("/{newsId}")
+    @Operation(summary = "뉴스 상세 조회 (비회원은 중 레벨)")
+    public ApiResponse<NewsDetailDTO> getNewsDetail(@PathVariable Long newsId, Authentication authentication) {
+        Long userId = extractUserId(authentication);
+        return newsService.getNewsDetail(newsId, userId, null);
+    }
+
+    @GetMapping("/search")
+    @Operation(summary = "뉴스 검색 (비회원은 중 레벨)")
+    public ApiResponse<List<NewsDTO>> searchNews(@RequestParam String keyword, Authentication authentication) {
+        Long userId = extractUserId(authentication);
+        return newsService.searchNews(keyword, userId, null);
+    }
+
+    @GetMapping("/user/saved-news")
+    @Operation(summary = "북마크한 뉴스 목록 조회 (회원만 가능)")
+    public ApiResponse<List<SavedNewsDTO>> getSavedNews(Authentication authentication) {
+        Long userId = extractUserId(authentication);
+        if (userId == null) {
+            throw new NewsException(ResponseCode.USER_UNAUTHORIZED);
+        }
+        return newsService.getSavedNews(userId, null);
+    }
+
+    @PostMapping("/{newsId}")
+    @Operation(summary = "뉴스 북마크 저장 (회원만 가능)")
+    public ApiResponse<?> saveNews(@PathVariable Long newsId, Authentication authentication) {
+        Long userId = extractUserId(authentication);
+
+        if (userId == null) {
+            throw new NewsException(ResponseCode.USER_UNAUTHORIZED);
+        }
+
+        return newsService.saveNews(userId, newsId, null);
+    }
+
+    @DeleteMapping("/{savedNewsId}")
+    @Operation(summary = "뉴스 북마크 삭제 (회원만 가능)")
+    public ApiResponse<?> deleteNewsBookmark(
+            @PathVariable Long savedNewsId,
+            Authentication authentication
+    ) {
+        Long userId = extractUserId(authentication);
+
+        if (userId == null) {
+            throw new NewsException(ResponseCode.USER_UNAUTHORIZED);
+        }
+
+        return newsService.deleteNewsBookmark(userId, savedNewsId);
+    }
+
+    private Long extractUserId(Authentication authentication) {
+        if (authentication == null || authentication.getName() == null) {
+            return null;
+        }
+        return Long.parseLong(authentication.getName());
+    }
+}

src/main/java/dgu/newsee/domain/news/converter/NewsConverter.java

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+package dgu.newsee.domain.news.converter;
+
+import dgu.newsee.domain.crawlednews.entity.NewsOrigin;
+import dgu.newsee.domain.news.dto.NewsDetailDTO;
+import dgu.newsee.domain.news.dto.NewsDTO;
+import dgu.newsee.domain.news.dto.SavedNewsDTO;
+import dgu.newsee.domain.news.entity.SavedNews;
+import dgu.newsee.domain.transformednews.entity.NewsTransformed;
+
+import java.util.List;
+
+public class NewsConverter {
+
+    public static NewsDTO toNewsDto(NewsOrigin origin, NewsTransformed transformed, boolean isBookmarked) {
+        return NewsDTO.builder()
+                .newsId(origin.getId())
+                .title(transformed.getNews().getTitle())  // transformed 제목
+                .category(origin.getCategory())
+                .transformedContent(transformed.getTransformedContent()) // transformed 내용
+                .source(origin.getSource())
+                .time(origin.getTime().toString())
+                .url(origin.getOriginalUrl())
+                .imageUrl(origin.getImageUrl())
+                .isBookmarked(isBookmarked)
+                .build();
+    }
+
+    public static SavedNewsDTO toSavedNewsDto(
+            SavedNews savedNews,
+            NewsTransformed transformed
+    ) {
+        NewsOrigin origin = savedNews.getNewsOrigin();
+        return SavedNewsDTO.builder()
+                .savedNewsId(savedNews.getId())
+                .newsId(origin.getId())
+                .title(transformed != null ? transformed.getNews().getTitle() : origin.getTitle())
+                .category(origin.getCategory())
+                .source(origin.getSource())
+                .time(origin.getTime().toString())
+                .url(origin.getOriginalUrl())
+                .imageUrl(origin.getImageUrl())
+                .transformedContent(transformed != null ? transformed.getTransformedContent() : null)
+                .build();
+    }
+
+    public static NewsDetailDTO toNewsDetailDto(
+            NewsOrigin origin,
+            NewsTransformed transformed,
+            String userLevel,
+            boolean isBookmarked,
+            List<NewsDetailDTO.KeywordDto> keywords
+    ) {
+        return NewsDetailDTO.builder()
+                .newsId(origin.getId())
+                .title(transformed.getNews().getTitle())
+                .category(origin.getCategory())
+                .source(origin.getSource())
+                .time(origin.getTime().toString())
+                .url(origin.getOriginalUrl())
+                .imageUrl(origin.getImageUrl())
+                .userLevel(userLevel)
+                .isBookmarked(isBookmarked)
+                .transformedContent(transformed.getTransformedContent())
+                .summary(transformed.getSummarized())
+                .keywords(keywords)
+                .build();
+    }
+}

src/main/java/dgu/newsee/domain/news/dto/NewsDTO.java

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+package dgu.newsee.domain.news.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+@Builder
+public class NewsDTO {
+    private Long newsId;
+    private String title;
+    private String category;
+    private String source;
+    private String time;
+    private String url;
+    private String imageUrl;
+    private boolean isBookmarked;
+    private String transformedContent;
+
+    @JsonProperty("isBookmarked")
+    public boolean getIsBookmarked() {
+        return isBookmarked;
+    }
+
+//    private String level;
+}

src/main/java/dgu/newsee/domain/news/dto/NewsDetailDTO.java

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+package dgu.newsee.domain.news.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.util.List;
+
+@Getter
+@AllArgsConstructor
+@Builder
+public class NewsDetailDTO {
+    private Long newsId;
+    private String title;
+    private String category;
+    private String source;
+    private String time;
+    private String url;
+    private String imageUrl;
+    private String userLevel;
+    private boolean isBookmarked;
+
+    @JsonProperty("isBookmarked")
+    public boolean getIsBookmarked() {
+        return isBookmarked;
+    }
+
+    private String transformedContent;
+    private String summary;
+    private List<KeywordDto> keywords;
+
+    @Getter
+    @AllArgsConstructor
+    @Builder
+    public static class KeywordDto {
+        private Long wordId;
+        private String term;
+        private String description;
+        private String source;
+    }
+}

src/main/java/dgu/newsee/domain/news/dto/SaveNewsResponseDTO.java

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+package dgu.newsee.domain.news.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class SaveNewsResponseDTO {
+    private Long userId;
+    private Long newsId;
+}

src/main/java/dgu/newsee/domain/news/dto/SavedNewsDTO.java

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+package dgu.newsee.domain.news.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+@Builder
+public class SavedNewsDTO {
+    private Long savedNewsId;
+    private Long newsId;
+    private String title;
+    private String category;
+    private String source;
+    private String time;
+    private String url;
+    private String imageUrl;
+    private String transformedContent;
+}

src/main/java/dgu/newsee/domain/news/entity/SavedNews.java

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+package dgu.newsee.domain.news.entity;
+
+import dgu.newsee.domain.crawlednews.entity.NewsOrigin;
+import dgu.newsee.domain.transformednews.entity.TransformLevel;
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+@Builder
+public class SavedNews {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private Long userId;
+
+    @Enumerated(EnumType.STRING)
+    private TransformLevel savedLevel; // 북마크 당시 level로 저장
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "news_origin_id")
+    private NewsOrigin newsOrigin;
+}

src/main/java/dgu/newsee/domain/news/repository/NewsQueryRepository.java

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+package dgu.newsee.domain.news.repository;
+
+import dgu.newsee.domain.crawlednews.entity.NewsOrigin;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface NewsQueryRepository extends JpaRepository<NewsOrigin, Long> {
+
+    // 자동 크롤링만 가져오기
+    List<NewsOrigin> findByStatus(dgu.newsee.domain.crawlednews.entity.NewsStatus status);
+
+}

src/main/java/dgu/newsee/domain/news/repository/SavedNewsRepository.java

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+package dgu.newsee.domain.news.repository;
+
+import dgu.newsee.domain.news.entity.SavedNews;
+import org.springframework.data.jpa.repository.JpaRepository;
+import dgu.newsee.domain.transformednews.entity.TransformLevel;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface SavedNewsRepository extends JpaRepository<SavedNews, Long> {
+    List<SavedNews> findByUserId(Long userId);
+
+    boolean existsByUserIdAndNewsOriginIdAndSavedLevel(Long userId, Long newsOriginId, TransformLevel savedLevel);
+}

src/main/java/dgu/newsee/domain/news/service/NewsService.java

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+package dgu.newsee.domain.news.service;
+
+import dgu.newsee.domain.news.dto.NewsDetailDTO;
+import dgu.newsee.domain.news.dto.NewsDTO;
+import dgu.newsee.domain.news.dto.SavedNewsDTO;
+import dgu.newsee.global.payload.ApiResponse;
+
+import java.util.List;
+
+public interface NewsService {
+
+    ApiResponse<List<NewsDTO>> getAllNews(Long userId, String levelKor);
+
+    ApiResponse<NewsDetailDTO> getNewsDetail(Long newsId, Long userId, String levelKor);
+
+    ApiResponse<List<NewsDTO>> searchNews(String keyword, Long userId, String levelKor);
+
+    ApiResponse<List<SavedNewsDTO>> getSavedNews(Long userId, String levelKor);
+
+    ApiResponse<?> saveNews(Long userId, Long newsId, String levelKor);
+
+    ApiResponse<?> deleteNewsBookmark(Long userId, Long savedNewsId);
+
+}