[BOOK-26]- 기본 도서 목록 랜덤 조회 API (#18)

* [BOOK-26]-feat: 기본 도서 목록 랜덤 조회 API

* [BOOK-26]-refactor: 스키마 변경

src/main/java/goorm/unit/booklog/domain/book/application/BookService.java

@@ -2,10 +2,13 @@
 
 import java.net.URI;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 import goorm.unit.booklog.domain.book.domain.Book;
+import goorm.unit.booklog.domain.book.presentation.response.BookListResponse;
 import goorm.unit.booklog.domain.book.presentation.response.UserBookListResponse;
 import goorm.unit.booklog.domain.file.domain.File;
 import goorm.unit.booklog.domain.review.domain.ReviewRepository;
@@ -33,7 +36,6 @@
 public class BookService {
 	private final BookRepository bookRepository;
 	private final UserService userService;
-	private final ReviewRepository reviewRepository;
 
 	@Value("${naver.api.clientId}")
 	private String clientId;
@@ -93,6 +95,16 @@ public BookPageResponse searchBooks(int page, int size, String keyword) {
 		return BookPageResponse.of(bookResponses, PageableResponse.of(PageRequest.of(page, size), (long)total));
 	}
 
+	public BookListResponse getDefaultBookList(int size) {
+		List<Book> books = bookRepository.findAll();
+		Collections.shuffle(books);
+		List<Book> randomBooks = books.stream()
+			.limit(size)
+			.collect(Collectors.toList());
+		return BookListResponse.of(randomBooks);
+	}
+
+
 	public Book getBookById(Long id) {
 		return bookRepository.findById(id).orElse(null);
 	}

src/main/java/goorm/unit/booklog/domain/book/domain/BookRepository.java

@@ -13,4 +13,5 @@ public interface BookRepository {
 
     Optional<Book> findByTitleAndAuthor(String title, String author);
 
+    List<Book> findAll();
 }

src/main/java/goorm/unit/booklog/domain/book/infrastructure/BookRepositoryImpl.java

@@ -28,5 +28,8 @@ public Optional<Book> findById(Long id) {
     public Optional<Book> findByTitleAndAuthor(String title, String author) {
         return jpaBookRepository.findByTitleAndAuthor(title, author);
     }
-
+    @Override
+    public List<Book> findAll() {
+        return jpaBookRepository.findAll();
+    }
 }

src/main/java/goorm/unit/booklog/domain/book/presentation/BookController.java

@@ -1,5 +1,6 @@
 package goorm.unit.booklog.domain.book.presentation;
 
+import goorm.unit.booklog.domain.book.presentation.response.BookListResponse;
 import goorm.unit.booklog.domain.book.presentation.response.UserBookListResponse;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -44,6 +45,22 @@ public ResponseEntity<BookPageResponse> searchBooks(
 		return ResponseEntity.ok(response);
 	}
 
+	@Operation(summary = "기본 도서 목록 조회", description = "랜덤으로 요청한 개수 만큼의 도서 목록을 반환합니다.")
+	@ApiResponses({
+		@ApiResponse(
+			responseCode = "200",
+			description = "기본 도서 목록 조회 성공",
+			content = @Content(schema = @Schema(implementation = BookListResponse.class))
+		)
+	})
+	@GetMapping
+	public ResponseEntity<BookListResponse> getDefaultBookList(
+		@Parameter(description = "응답 개수", example = "10", required = true) @RequestParam(value = "size", defaultValue = "10") int size
+	) {
+		BookListResponse response = bookService.getDefaultBookList(size);
+		return ResponseEntity.ok(response);
+	}
+
 	@Operation(summary = "유저 활동 내역 조회", description = " 작성한 독후감의 수와 읽은 책의 수, 표지, 제목을 반환합니다.")
 	@ApiResponses({
 			@ApiResponse(

src/main/java/goorm/unit/booklog/domain/book/presentation/response/BookListResponse.java

@@ -0,0 +1,28 @@
+package goorm.unit.booklog.domain.book.presentation.response;
+
+import static io.swagger.v3.oas.annotations.media.Schema.RequiredMode.REQUIRED;
+
+import java.util.List;
+
+import goorm.unit.booklog.common.response.PageableResponse;
+import goorm.unit.booklog.domain.book.domain.Book;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Builder;
+
+@Builder
+public record BookListResponse(
+	@Schema(
+		description = "도서 목록",
+		example = "[{\"id\": 1, \"title\": \"스프링 부트와 AWS로 혼자 구현하는 웹 서비스\", \"author\": \"이동욱\", \"description\": \"이 책은 스프링부트 입문자용 책입니다.\", \"file\": {\"id\": 1, \"logicalName\": \"example.jpg\", \"physicalPath\": \"https://example-bucket.ncp.com/files/example.jpg\"}}]",
+		requiredMode = REQUIRED
+	)
+	List<BookResponse> contents
+) {
+	public static BookListResponse of(List<Book> books) {
+		return BookListResponse.builder()
+			.contents(books.stream()
+				.map(BookResponse::from)
+				.toList())
+			.build();
+	}
+}

src/main/resources/application-local.yml

@@ -1,4 +1,8 @@
 spring:
   jpa:
     hibernate:
-      ddl-auto: update
+      ddl-auto: update
+  data:
+    redis:
+      host: localhost
+      port: 6379