feat: 즐겨찾기 기능 구현

src/docs/asciidoc/favorite/favorite-api.adoc

@@ -0,0 +1,52 @@
+ifndef::snippets[]
+:snippets: build/generated-snippets
+endif::[]
+
+= Favorite REST API Docs
+:doctype: book
+:icons: font
+:source-highlighter: highlightjs
+:toc: left
+:toclevels: 2
+
+[[Register]]
+== 즐겨찾기 등록
+
+즐겨찾기 등록 API 입니다.
+
+=== HttpRequest
+
+include::{snippets}/favorite-rest-controller-docs-test/register/http-request.adoc[]
+
+=== HttpResponse
+
+include::{snippets}/favorite-rest-controller-docs-test/register/http-response.adoc[]
+include::{snippets}/favorite-rest-controller-docs-test/register/response-fields.adoc[]
+
+[[Get-Favorites]]
+== 즐겨찾기 목록 조회
+
+즐겨찾기 목록 조회 API 입니다.
+
+=== HttpRequest
+
+include::{snippets}/favorite-rest-controller-docs-test/get-favorites/http-request.adoc[]
+
+=== HttpResponse
+
+include::{snippets}/favorite-rest-controller-docs-test/get-favorites/http-response.adoc[]
+include::{snippets}/favorite-rest-controller-docs-test/get-favorites/response-fields.adoc[]
+
+[[Cancel]]
+== 즐겨찾기 취소
+
+즐겨찾기 취소 API 입니다.
+
+=== HttpRequest
+
+include::{snippets}/favorite-rest-controller-docs-test/cancel/http-request.adoc[]
+
+=== HttpResponse
+
+include::{snippets}/favorite-rest-controller-docs-test/cancel/http-response.adoc[]
+include::{snippets}/favorite-rest-controller-docs-test/cancel/response-fields.adoc[]

src/main/java/com/fc/shimpyo_be/domain/favorite/controller/FavoriteRestController.java

@@ -0,0 +1,56 @@
+package com.fc.shimpyo_be.domain.favorite.controller;
+
+import com.fc.shimpyo_be.domain.favorite.dto.FavoriteResponseDto;
+import com.fc.shimpyo_be.domain.favorite.dto.FavoritesResponseDto;
+import com.fc.shimpyo_be.domain.favorite.entity.Favorite;
+import com.fc.shimpyo_be.domain.favorite.service.FavoriteService;
+import com.fc.shimpyo_be.domain.product.util.model.PageableConstraint;
+import com.fc.shimpyo_be.global.common.ResponseDto;
+import com.fc.shimpyo_be.global.util.SecurityUtil;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.web.PageableDefault;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@Slf4j
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/favorites")
+public class FavoriteRestController {
+
+    private final FavoriteService favoriteService;
+    private final SecurityUtil securityUtil;
+
+    @PostMapping("/{productId}")
+    public ResponseEntity<ResponseDto<FavoriteResponseDto>> register(@PathVariable long productId) {
+        log.debug("memberId: {}, productId: {}", securityUtil.getCurrentMemberId(), productId);
+        return ResponseEntity.status(HttpStatus.CREATED).body(ResponseDto.res(HttpStatus.CREATED,
+            favoriteService.register(securityUtil.getCurrentMemberId(), productId),
+            "성공적으로 즐겨찾기를 등록했습니다."));
+    }
+
+    @GetMapping
+    public ResponseEntity<ResponseDto<FavoritesResponseDto>> getFavorites(
+        @PageableConstraint(Favorite.class) @PageableDefault(size = 10, page = 0) Pageable pageable) {
+        log.debug("memberId: {}", securityUtil.getCurrentMemberId());
+        return ResponseEntity.status(HttpStatus.OK)
+            .body(ResponseDto.res(HttpStatus.OK, favoriteService.getFavorites(
+                securityUtil.getCurrentMemberId(), pageable), "성공적으로 즐겨찾기 목록을 조회했습니다."));
+    }
+
+    @DeleteMapping("/{productId}")
+    public ResponseEntity<ResponseDto<FavoriteResponseDto>> cancel(@PathVariable long productId) {
+        log.debug("memberId: {}, productId: {}", securityUtil.getCurrentMemberId(), productId);
+        return ResponseEntity.status(HttpStatus.OK).body(ResponseDto.res(HttpStatus.OK,
+            favoriteService.delete(securityUtil.getCurrentMemberId(), productId),
+            "성공적으로 즐겨찾기를 취소했습니다."));
+    }
+}

src/main/java/com/fc/shimpyo_be/domain/favorite/dto/FavoriteResponseDto.java

@@ -0,0 +1,30 @@
+package com.fc.shimpyo_be.domain.favorite.dto;
+
+import com.fc.shimpyo_be.domain.favorite.entity.Favorite;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class FavoriteResponseDto {
+
+    private Long favoriteId;
+    private Long memberId;
+    private Long productId;
+
+    @Builder
+    public FavoriteResponseDto(Long favoriteId, Long memberId, Long productId) {
+        this.favoriteId = favoriteId;
+        this.memberId = memberId;
+        this.productId = productId;
+    }
+
+    public static FavoriteResponseDto of(Favorite favorite) {
+        return FavoriteResponseDto.builder()
+            .favoriteId(favorite.getId())
+            .memberId(favorite.getMember().getId())
+            .productId(favorite.getProduct().getId())
+            .build();
+    }
+}

src/main/java/com/fc/shimpyo_be/domain/favorite/dto/FavoritesResponseDto.java

@@ -0,0 +1,23 @@
+package com.fc.shimpyo_be.domain.favorite.dto;
+
+import com.fc.shimpyo_be.domain.product.dto.response.ProductResponse;
+import java.util.List;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class FavoritesResponseDto {
+
+    private int pageCount;
+    private Boolean isLast;
+    private List<ProductResponse> products;
+
+    @Builder
+    public FavoritesResponseDto(int pageCount, Boolean isLast, List<ProductResponse> products) {
+        this.pageCount = pageCount;
+        this.isLast = isLast;
+        this.products = products;
+    }
+}

src/main/java/com/fc/shimpyo_be/domain/favorite/exception/FavoriteAlreadyRegisterException.java

@@ -0,0 +1,11 @@
+package com.fc.shimpyo_be.domain.favorite.exception;
+
+import com.fc.shimpyo_be.global.exception.ApplicationException;
+import com.fc.shimpyo_be.global.exception.ErrorCode;
+
+public class FavoriteAlreadyRegisterException extends ApplicationException {
+
+    public FavoriteAlreadyRegisterException() {
+        super(ErrorCode.FAVORITE_ALREADY_REGISTER);
+    }
+}

src/main/java/com/fc/shimpyo_be/domain/favorite/exception/FavoriteNotFoundException.java

@@ -0,0 +1,11 @@
+package com.fc.shimpyo_be.domain.favorite.exception;
+
+import com.fc.shimpyo_be.global.exception.ApplicationException;
+import com.fc.shimpyo_be.global.exception.ErrorCode;
+
+public class FavoriteNotFoundException extends ApplicationException {
+
+    public FavoriteNotFoundException() {
+        super(ErrorCode.FAVORITE_NOT_FOUND);
+    }
+}

src/main/java/com/fc/shimpyo_be/domain/favorite/repository/FavoriteCustomRepository.java

@@ -0,0 +1,10 @@
+package com.fc.shimpyo_be.domain.favorite.repository;
+
+import com.fc.shimpyo_be.domain.favorite.entity.Favorite;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+public interface FavoriteCustomRepository {
+
+    Page<Favorite> findAllByMemberId(long memberId, Pageable pageable);
+}

src/main/java/com/fc/shimpyo_be/domain/favorite/repository/FavoriteCustomRepositoryImpl.java

@@ -0,0 +1,55 @@
+package com.fc.shimpyo_be.domain.favorite.repository;
+
+import static com.fc.shimpyo_be.domain.favorite.entity.QFavorite.favorite;
+import static com.fc.shimpyo_be.domain.member.entity.QMember.member;
+import static com.fc.shimpyo_be.domain.product.entity.QProduct.product;
+
+import com.fc.shimpyo_be.domain.favorite.entity.Favorite;
+import com.fc.shimpyo_be.global.util.QueryDslUtil;
+import com.querydsl.core.types.Order;
+import com.querydsl.core.types.OrderSpecifier;
+import com.querydsl.jpa.impl.JPAQuery;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import java.util.LinkedList;
+import java.util.List;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.support.PageableExecutionUtils;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class FavoriteCustomRepositoryImpl implements FavoriteCustomRepository {
+
+    private final JPAQueryFactory queryFactory;
+
+    FavoriteCustomRepositoryImpl(JPAQueryFactory jpaQueryFactory) {
+        this.queryFactory = jpaQueryFactory;
+    }
+
+    @Override
+    public Page<Favorite> findAllByMemberId(long memberId, Pageable pageable) {
+        JPAQuery<Favorite> query = queryFactory
+            .selectDistinct(favorite)
+            .from(favorite)
+            .leftJoin(favorite.member, member)
+            .leftJoin(favorite.product, product)
+            .where(member.id.eq(memberId))
+            .offset(pageable.getOffset())
+            .orderBy(getAllOrderSpecifiers(pageable).toArray(OrderSpecifier[]::new))
+            .limit(pageable.getPageSize());
+        JPAQuery<Favorite> countQuery = queryFactory
+            .selectDistinct(favorite)
+            .from(favorite)
+            .leftJoin(favorite.member, member)
+            .leftJoin(favorite.product, product)
+            .where(member.id.eq(memberId));
+        List<Favorite> content = query.fetch();
+        return PageableExecutionUtils.getPage(content, pageable, () -> countQuery.fetch().size());
+    }
+
+    private List<OrderSpecifier<?>> getAllOrderSpecifiers(Pageable pageable) {
+        List<OrderSpecifier<?>> ORDERS = new LinkedList<>();
+        ORDERS.add(QueryDslUtil.getSortedColumn(Order.DESC, favorite, "id"));
+        return ORDERS;
+    }
+}

src/main/java/com/fc/shimpyo_be/domain/favorite/repository/FavoriteRepository.java

@@ -1,8 +1,13 @@
 package com.fc.shimpyo_be.domain.favorite.repository;
 
 import com.fc.shimpyo_be.domain.favorite.entity.Favorite;
+import com.fc.shimpyo_be.domain.member.entity.Member;
+import com.fc.shimpyo_be.domain.product.entity.Product;
+import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface FavoriteRepository extends JpaRepository<Favorite, Long> {
+public interface FavoriteRepository extends JpaRepository<Favorite, Long>,
+    FavoriteCustomRepository {
 
+    Optional<Favorite> findByMemberAndProduct(Member member, Product product);
 }

src/main/java/com/fc/shimpyo_be/domain/favorite/service/FavoriteService.java

@@ -0,0 +1,70 @@
+package com.fc.shimpyo_be.domain.favorite.service;
+
+import com.fc.shimpyo_be.domain.favorite.dto.FavoriteResponseDto;
+import com.fc.shimpyo_be.domain.favorite.dto.FavoritesResponseDto;
+import com.fc.shimpyo_be.domain.favorite.entity.Favorite;
+import com.fc.shimpyo_be.domain.favorite.exception.FavoriteAlreadyRegisterException;
+import com.fc.shimpyo_be.domain.favorite.exception.FavoriteNotFoundException;
+import com.fc.shimpyo_be.domain.favorite.repository.FavoriteRepository;
+import com.fc.shimpyo_be.domain.member.entity.Member;
+import com.fc.shimpyo_be.domain.member.service.MemberService;
+import com.fc.shimpyo_be.domain.product.dto.response.ProductResponse;
+import com.fc.shimpyo_be.domain.product.entity.Product;
+import com.fc.shimpyo_be.domain.product.exception.ProductNotFoundException;
+import com.fc.shimpyo_be.domain.product.repository.ProductRepository;
+import com.fc.shimpyo_be.domain.product.util.ProductMapper;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class FavoriteService {
+
+    private final FavoriteRepository favoriteRepository;
+    private final MemberService memberService;
+    private final ProductRepository productRepository;
+
+    public FavoriteResponseDto register(long memberId, long productId) {
+        Member member = memberService.getMemberById(memberId);
+        Product product = productRepository.findById(productId).orElseThrow(
+            ProductNotFoundException::new);
+        Optional<Favorite> favorite = favoriteRepository.findByMemberAndProduct(member, product);
+        if (favorite.isPresent()) {
+            throw new FavoriteAlreadyRegisterException();
+        }
+        return FavoriteResponseDto.of(favoriteRepository.save(Favorite.builder()
+            .member(member)
+            .product(product)
+            .build()));
+    }
+
+    public FavoritesResponseDto getFavorites(long memberId, Pageable pageable) {
+        List<ProductResponse> productResponses = new ArrayList<>();
+        Member member = memberService.getMemberById(memberId);
+        Page<Favorite> favorites = favoriteRepository.findAllByMemberId(member.getId(), pageable);
+        for (Favorite favorite : favorites) {
+            productResponses.add(ProductMapper.toProductResponse(favorite.getProduct()));
+        }
+        return FavoritesResponseDto.builder()
+            .pageCount(favorites.getTotalPages())
+            .isLast(favorites.isLast())
+            .products(productResponses)
+            .build();
+    }
+
+    public FavoriteResponseDto delete(long memberId, long productId) {
+        Member member = memberService.getMemberById(memberId);
+        Product product = productRepository.findById(productId).orElseThrow(
+            ProductNotFoundException::new);
+        Favorite favorite = favoriteRepository.findByMemberAndProduct(member, product)
+            .orElseThrow(FavoriteNotFoundException::new);
+        FavoriteResponseDto favoriteResponseDto = FavoriteResponseDto.of(favorite);
+        favoriteRepository.delete(favorite);
+        return favoriteResponseDto;
+    }
+}

src/main/java/com/fc/shimpyo_be/global/exception/ErrorCode.java

@@ -42,8 +42,12 @@ public enum ErrorCode {
     HTTP_CLIENT_CONNECTION_ERROR(HttpStatus.UNAUTHORIZED, "외부 API 연결에 실패했습니다."),
     OPEN_API_ERROR(HttpStatus.NOT_FOUND, "오픈 API에서 데이터를 불러오는데 실패했습니다."),
 
-    //Common
-    INVALID_DATE(HttpStatus.BAD_REQUEST,"잘못된 날짜 데이터입니다.");
+    // Common
+    INVALID_DATE(HttpStatus.BAD_REQUEST,"잘못된 날짜 데이터입니다."),
+
+    // 즐겨찾기
+    FAVORITE_ALREADY_REGISTER(HttpStatus.BAD_REQUEST, "이미 즐겨찾기에 등록한 숙소입니다."),
+    FAVORITE_NOT_FOUND(HttpStatus.NOT_FOUND, "즐겨찾기 정보를 찾을 수 없습니다.");
 
     private final HttpStatus httpStatus;
     private final String simpleMessage;