[Feature] 도서와 관련된 리뷰 조회 API 구현

src/docs/asciidoc/api/review/review.adoc

@@ -1,4 +1,18 @@
 [[review-create]]
+
+=== 도서와 연관된 리뷰 조회
+
+==== HTTP Request
+
+include::{snippets}/review/get-related-book/http-request.adoc[]
+include::{snippets}/review/get-related-book/path-parameters.adoc[]
+include::{snippets}/review/get-related-book/query-parameters.adoc[]
+
+==== HTTP Response
+
+include::{snippets}/review/get-related-book/http-response.adoc[]
+include::{snippets}/review/get-related-book/response-fields.adoc[]
+
 === 한줄평 생성
 
 ==== HTTP Request

src/main/java/com/jisungin/api/review/ReviewController.java

@@ -3,25 +3,39 @@
 import com.jisungin.api.ApiResponse;
 import com.jisungin.api.support.Auth;
 import com.jisungin.api.review.request.ReviewCreateRequest;
+import com.jisungin.application.OffsetLimit;
+import com.jisungin.application.SliceResponse;
 import com.jisungin.application.review.ReviewService;
+import com.jisungin.application.review.response.ReviewWithRatingResponse;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
 import org.springframework.web.bind.annotation.*;
 
-@RequestMapping("/v1/reviews")
+@RequestMapping("/v1")
 @RequiredArgsConstructor
 @RestController
 public class ReviewController {
 
     private final ReviewService reviewService;
 
-    @PostMapping
-    public ApiResponse<Void> createReview(@Valid @RequestBody ReviewCreateRequest request, @Auth Long userId) {
+    @GetMapping("/books/{isbn}/reviews")
+    public ApiResponse<SliceResponse<ReviewWithRatingResponse>> findBookReviews(
+            @PathVariable String isbn,
+            @RequestParam(required = false, defaultValue = "1") Integer page,
+            @RequestParam(required = false, defaultValue = "8") Integer size,
+            @RequestParam(required = false, defaultValue = "like") String order
+    ) {
+        return ApiResponse.ok(reviewService.findBookReviews(isbn, OffsetLimit.of(page, size, order)));
+    }
+
+    @PostMapping("/reviews")
+    public ApiResponse<Void> createReview(@Valid @RequestBody ReviewCreateRequest request,
+                                          @Auth Long userId) {
         reviewService.createReview(request.toServiceRequest(), userId);
         return ApiResponse.ok();
     }
 
-    @DeleteMapping("/{reviewId}")
+    @DeleteMapping("/reviews/{reviewId}")
     public ApiResponse<Void> deleteReview(@PathVariable Long reviewId, @Auth Long userId) {
         reviewService.deleteReview(reviewId, userId);
         return ApiResponse.ok();

src/main/java/com/jisungin/application/OffsetLimit.java

@@ -0,0 +1,42 @@
+package com.jisungin.application;
+
+import static java.lang.Math.*;
+
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+public class OffsetLimit {
+
+    private static final Integer MAX_SIZE = 2000;
+    private Integer offset;
+    private Integer limit;
+    private String order;
+
+    @Builder
+    private OffsetLimit(Integer offset, Integer limit, String order) {
+        this.offset = offset;
+        this.limit = limit;
+        this.order = order;
+    }
+
+    public static OffsetLimit of(Integer page, Integer size) {
+        return OffsetLimit.builder()
+                .offset(calculateOffset(page, size))
+                .limit(size)
+                .build();
+    }
+
+    public static OffsetLimit of(Integer page, Integer size, String order) {
+        return OffsetLimit.builder()
+                .offset(calculateOffset(page, size))
+                .limit(size)
+                .order(order)
+                .build();
+    }
+
+    private static Integer calculateOffset(Integer page, Integer size) {
+        return (max(1, page) - 1) * min(size, MAX_SIZE);
+    }
+
+}

src/main/java/com/jisungin/application/SliceResponse.java

@@ -0,0 +1,54 @@
+package com.jisungin.application;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import java.util.List;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+public class SliceResponse<T> {
+
+    private List<T> content;
+
+    private boolean hasContent;
+
+    @JsonProperty("isFirst")
+    private boolean first;
+
+    @JsonProperty("isLast")
+    private boolean last;
+
+    private Integer number;
+
+    private Integer size;
+
+    @Builder
+    private SliceResponse(List<T> content, boolean hasContent, boolean first, boolean last, Integer number,
+                          Integer size) {
+        this.content = content;
+        this.hasContent = hasContent;
+        this.first = first;
+        this.last = last;
+        this.number = number;
+        this.size = size;
+    }
+
+    public static <T> SliceResponse<T> of(List<T> content, Integer offset, Integer limit, boolean hasNext) {
+        boolean hasContent = !content.isEmpty();
+        boolean first = (offset == 0);
+        boolean last = !hasNext;
+
+        Integer number = (offset / limit) + 1;
+        Integer size = content.size();
+
+        return SliceResponse.<T>builder()
+                .content(content)
+                .hasContent(hasContent)
+                .first(first)
+                .last(last)
+                .number(number)
+                .size(size)
+                .build();
+    }
+
+}

src/main/java/com/jisungin/application/review/ReviewService.java

@@ -1,7 +1,14 @@
 package com.jisungin.application.review;
 
+import static com.jisungin.exception.ErrorCode.BOOK_NOT_FOUND;
+import static com.jisungin.exception.ErrorCode.REVIEW_NOT_FOUND;
+import static com.jisungin.exception.ErrorCode.UNAUTHORIZED_REQUEST;
+import static com.jisungin.exception.ErrorCode.USER_NOT_FOUND;
+
+import com.jisungin.application.OffsetLimit;
+import com.jisungin.application.SliceResponse;
 import com.jisungin.application.review.request.ReviewCreateServiceRequest;
-import com.jisungin.application.review.response.ReviewResponse;
+import com.jisungin.application.review.response.ReviewWithRatingResponse;
 import com.jisungin.domain.book.Book;
 import com.jisungin.domain.book.repository.BookRepository;
 import com.jisungin.domain.review.Review;
@@ -13,8 +20,6 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import static com.jisungin.exception.ErrorCode.*;
-
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
 @Service
@@ -24,6 +29,14 @@ public class ReviewService {
     private final UserRepository userRepository;
     private final BookRepository bookRepository;
 
+    public SliceResponse<ReviewWithRatingResponse> findBookReviews(String isbn, OffsetLimit offsetLimit) {
+        Book book = bookRepository.findById(isbn)
+                .orElseThrow(() -> new BusinessException(BOOK_NOT_FOUND));
+
+        return reviewRepository.findAllByBookId(book.getIsbn(), offsetLimit.getOffset(), offsetLimit.getLimit(),
+                offsetLimit.getOrder());
+    }
+
     @Transactional
     public void createReview(ReviewCreateServiceRequest request, Long userId) {
         User user = userRepository.findById(userId)

src/main/java/com/jisungin/application/review/response/ReviewWithRatingResponse.java

@@ -0,0 +1,46 @@
+package com.jisungin.application.review.response;
+
+import com.querydsl.core.annotations.QueryProjection;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class ReviewWithRatingResponse {
+
+    private Long reviewId;
+    private Long ratingId;
+    private String username;
+    private String profileImage;
+    private String reviewContent;
+    private Double starRating;
+    private Long likeCount;
+
+    @Builder
+    @QueryProjection
+    public ReviewWithRatingResponse(Long reviewId, Long ratingId, String username, String profileImage,
+                                     String reviewContent, Double starRating, Long likeCount) {
+        this.reviewId = reviewId;
+        this.ratingId = ratingId;
+        this.username = username;
+        this.profileImage = profileImage;
+        this.reviewContent = reviewContent;
+        this.starRating = starRating;
+        this.likeCount = likeCount;
+    }
+
+    public static ReviewWithRatingResponse of(Long reviewId, Long ratingId, String username, String profileImage,
+                                              String reviewContent, Double starRating, Long likeCount) {
+       return ReviewWithRatingResponse.builder()
+               .reviewId(reviewId)
+               .ratingId(ratingId)
+               .username(username)
+               .profileImage(profileImage)
+               .reviewContent(reviewContent)
+               .starRating(starRating)
+               .likeCount(likeCount)
+               .build();
+    }
+
+}

src/main/java/com/jisungin/domain/review/ReviewOrderType.java

@@ -0,0 +1,57 @@
+package com.jisungin.domain.review;
+
+import static com.jisungin.domain.rating.QRating.rating1;
+import static com.jisungin.domain.review.QReview.review;
+import static com.jisungin.domain.reviewlike.QReviewLike.reviewLike;
+
+import com.querydsl.core.types.OrderSpecifier;
+import com.querydsl.jpa.impl.JPAQuery;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+public enum ReviewOrderType {
+
+    LIKE(() -> reviewLike.id.count().desc(), ReviewOrderType::leftJoinRating),
+    RECENT(review.createDateTime::desc, ReviewOrderType::leftJoinRating),
+    RATING_DESC(rating1.rating::desc, ReviewOrderType::joinRating),
+    RATING_ASC(rating1.rating::asc, ReviewOrderType::joinRating);
+
+    private final Supplier<OrderSpecifier<?>> orderSpecifierSupplier;
+    private final Consumer<JPAQuery<?>> joinRatingStrategy;
+
+    ReviewOrderType(Supplier<OrderSpecifier<?>> orderSpecifierSupplier, Consumer<JPAQuery<?>> joinRatingStrategy) {
+        this.orderSpecifierSupplier = orderSpecifierSupplier;
+        this.joinRatingStrategy = joinRatingStrategy;
+    }
+
+    public OrderSpecifier<?> getOrderSpecifier() {
+        return orderSpecifierSupplier.get();
+    }
+
+    public void applyJoinStrategy(JPAQuery<?> query) {
+        joinRatingStrategy.accept(query);
+        applyCommonJoinConditions(query);
+    }
+
+    public static ReviewOrderType fromString(String name) {
+        try {
+            return ReviewOrderType.valueOf(name.toUpperCase());
+        } catch (IllegalArgumentException | NullPointerException e) {
+            return ReviewOrderType.LIKE;
+        }
+    }
+
+    private static void joinRating(JPAQuery<?> query) {
+        query.join(rating1);
+    }
+
+    private static void leftJoinRating(JPAQuery<?> query) {
+        query.leftJoin(rating1);
+    }
+
+    private static void applyCommonJoinConditions(JPAQuery<?> query) {
+        query.on(review.user.eq(rating1.user)
+                .and(review.book.eq(rating1.book)));
+    }
+
+}

src/main/java/com/jisungin/domain/review/repository/ReviewRepositoryCustom.java

@@ -1,12 +1,16 @@
 package com.jisungin.domain.review.repository;
 
 import com.jisungin.application.PageResponse;
+import com.jisungin.application.SliceResponse;
 import com.jisungin.application.review.response.ReviewContentResponse;
+import com.jisungin.application.review.response.ReviewWithRatingResponse;
 import com.jisungin.domain.review.RatingOrderType;
 
 public interface ReviewRepositoryCustom {
 
     PageResponse<ReviewContentResponse> findAllReviewContentOrderBy(
             Long userId, RatingOrderType orderType, int size, int offset);
 
+    SliceResponse<ReviewWithRatingResponse> findAllByBookId(String isbn, Integer offset, Integer limit, String order);
+
 }