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feat: 마이페이지 맞춤형 배너 알림 조회 API 구현
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‎src/main/java/com/ongil/backend/domain/banner/controller/BannerController.java‎

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package com.ongil.backend.domain.banner.controller;
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import org.springframework.http.ResponseEntity;
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import org.springframework.security.core.annotation.AuthenticationPrincipal;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import com.ongil.backend.domain.banner.dto.response.BannerResponse;
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import com.ongil.backend.domain.banner.service.BannerService;
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import com.ongil.backend.global.common.dto.DataResponse;
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import io.swagger.v3.oas.annotations.Operation;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import lombok.RequiredArgsConstructor;
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@Tag(name = "Banner", description = "배너 알림 관련 API")
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@RestController
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@RequiredArgsConstructor
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@RequestMapping("/api/banner")
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public class BannerController {
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private final BannerService bannerService;
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@GetMapping
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@Operation(summary = "배너 조회 API", description = "토큰 필요. 현재 사용자에게 보여줄 배너를 조회합니다. 구매 직후 리뷰 유도, 한달 후기 유도, 매거진 추천 중 우선순위에 따라 반환됩니다.")
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public ResponseEntity<DataResponse<BannerResponse>> getBanner(
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@AuthenticationPrincipal Long userId
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) {
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BannerResponse response = bannerService.getBanner(userId);
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return ResponseEntity.ok(DataResponse.from(response));
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}
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}

‎src/main/java/com/ongil/backend/domain/banner/converter/BannerConverter.java‎

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package com.ongil.backend.domain.banner.converter;
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import org.springframework.stereotype.Component;
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import com.ongil.backend.domain.banner.dto.response.BannerResponse;
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import com.ongil.backend.domain.banner.enums.BannerType;
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@Component
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public class BannerConverter {
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public BannerResponse toResponse(BannerType type, String title, String buttonText,
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String targetUrl, Long targetId, boolean enabled) {
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return BannerResponse.builder()
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.type(type)
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.title(title)
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.buttonText(buttonText)
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.targetUrl(targetUrl)
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.targetId(targetId)
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.enabled(enabled)
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.build();
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}
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}

‎src/main/java/com/ongil/backend/domain/banner/dto/response/BannerResponse.java‎

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package com.ongil.backend.domain.banner.dto.response;
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import com.ongil.backend.domain.banner.enums.BannerType;
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import lombok.Builder;
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@Builder
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public record BannerResponse(
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BannerType type,
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String title,
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String buttonText,
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String targetUrl,
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Long targetId,
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boolean enabled
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) {
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}

‎src/main/java/com/ongil/backend/domain/banner/enums/BannerType.java‎

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package com.ongil.backend.domain.banner.enums;
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import lombok.Getter;
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import lombok.RequiredArgsConstructor;
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@Getter
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@RequiredArgsConstructor
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public enum BannerType {
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MAGAZINE("매거진 유도"),
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REVIEW_PROMPT("구매 직후 리뷰 작성 유도"),
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MONTHLY_REVIEW_PROMPT("한달 후 리뷰 작성 유도");
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private final String description;
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}

‎src/main/java/com/ongil/backend/domain/banner/service/BannerService.java‎

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package com.ongil.backend.domain.banner.service;
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import java.time.LocalDateTime;
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import java.util.List;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import com.ongil.backend.domain.banner.converter.BannerConverter;
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import com.ongil.backend.domain.banner.dto.response.BannerResponse;
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import com.ongil.backend.domain.banner.enums.BannerType;
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import com.ongil.backend.domain.order.entity.Order;
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import com.ongil.backend.domain.order.entity.OrderItem;
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import com.ongil.backend.domain.order.enums.OrderStatus;
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import com.ongil.backend.domain.order.repository.OrderRepository;
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import com.ongil.backend.domain.review.enums.ReviewType;
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import com.ongil.backend.domain.review.repository.ReviewRepository;
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import lombok.RequiredArgsConstructor;
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@Service
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@RequiredArgsConstructor
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@Transactional(readOnly = true)
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public class BannerService {
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private final OrderRepository orderRepository;
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private final ReviewRepository reviewRepository;
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private final BannerConverter bannerConverter;
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public BannerResponse getBanner(Long userId) {
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// 1순위: 구매직후 후기 미작성
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BannerResponse initialReviewBanner = checkInitialReviewBanner(userId);
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if (initialReviewBanner != null) {
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return initialReviewBanner;
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}
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// 2순위: 한달 후 후기 미작성
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BannerResponse monthlyReviewBanner = checkMonthlyReviewBanner(userId);
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if (monthlyReviewBanner != null) {
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return monthlyReviewBanner;
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}
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// 3순위: 매거진 유도 알림
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return createMagazineBanner();
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}
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private BannerResponse checkInitialReviewBanner(Long userId) {
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List<Order> confirmedOrders = orderRepository.findByUserIdAndStatus(
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userId,
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OrderStatus.CONFIRMED
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);
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for (Order order : confirmedOrders) {
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OrderItem pendingItem = findPendingInitialReviewItem(order);
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if (pendingItem != null) {
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return bannerConverter.toResponse(
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BannerType.REVIEW_PROMPT,
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"구매하신 상품은 어떠셨나요?",
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"작성하러 가기",
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"/review/write",
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order.getId(),
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true
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);
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}
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}
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return null;
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}
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private BannerResponse checkMonthlyReviewBanner(Long userId) {
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LocalDateTime fiveDaysAgo = LocalDateTime.now().minusDays(5);
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List<Order> orders = orderRepository.findByUserIdAndStatusAndConfirmedAtBefore(
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userId,
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OrderStatus.CONFIRMED,
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fiveDaysAgo
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);
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for (Order order : orders) {
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OrderItem pendingItem = findPendingMonthlyReviewItem(order);
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if (pendingItem != null) {
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return bannerConverter.toResponse(
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BannerType.MONTHLY_REVIEW_PROMPT,
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"한달 후기를 작성해주세요!",
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"작성하러 가기",
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"/review/monthly/write",
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order.getId(),
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true
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);
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}
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}
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return null;
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}
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private BannerResponse createMagazineBanner() {
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return bannerConverter.toResponse(
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BannerType.MAGAZINE,
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"추천 매거진을 확인해보세요",
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"보러가기",
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"/magazine",
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null,
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true
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);
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}
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private OrderItem findPendingInitialReviewItem(Order order) {
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for (OrderItem item : order.getOrderItems()) {
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boolean hasInitialReview = reviewRepository.existsByOrderItemIdAndReviewType(
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item.getId(),
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ReviewType.INITIAL
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);
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if (!hasInitialReview) {
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return item;
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}
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}
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return null;
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}
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private OrderItem findPendingMonthlyReviewItem(Order order) {
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for (OrderItem item : order.getOrderItems()) {
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boolean hasMonthlyReview = reviewRepository.existsByOrderItemIdAndReviewType(
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item.getId(),
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ReviewType.ONE_MONTH
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);
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if (!hasMonthlyReview) {
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return item;
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}
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}
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return null;
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}
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}

‎src/main/java/com/ongil/backend/domain/order/repository/OrderRepository.java‎

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package com.ongil.backend.domain.order.repository;
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import java.time.LocalDateTime;
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import java.util.List;
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import org.springframework.data.jpa.repository.JpaRepository;
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import org.springframework.data.jpa.repository.Query;
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import org.springframework.data.repository.query.Param;
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import com.ongil.backend.domain.order.entity.Order;
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import com.ongil.backend.domain.order.enums.OrderStatus;
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public interface OrderRepository extends JpaRepository<Order, Long> {
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// 특정 사용자의 주문 확정 시간 범위로 주문 조회
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@Query("SELECT o FROM Order o " +
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"WHERE o.user.id = :userId " +
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"AND o.orderStatus = :status " +
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"AND o.confirmedAt >= :startTime " +
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"AND o.confirmedAt < :endTime " +
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"ORDER BY o.confirmedAt DESC")
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List<Order> findByUserIdAndStatusAndConfirmedAtBetween(
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@Param("userId") Long userId,
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@Param("status") OrderStatus status,
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@Param("startTime") LocalDateTime startTime,
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@Param("endTime") LocalDateTime endTime
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);
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// 특정 사용자의 주문 확정 시간 이후 주문 조회 (5일 전 이후 확정된 주문)
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@Query("SELECT o FROM Order o " +
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"WHERE o.user.id = :userId " +
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"AND o.orderStatus = :status " +
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"AND o.confirmedAt >= :afterTime " +
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"ORDER BY o.confirmedAt ASC")
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List<Order> findByUserIdAndStatusAndConfirmedAtAfter(
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@Param("userId") Long userId,
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@Param("status") OrderStatus status,
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@Param("afterTime") LocalDateTime afterTime
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);
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// 특정 사용자의 특정 상태 주문 조회
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@Query("SELECT o FROM Order o " +
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"WHERE o.user.id = :userId " +
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"AND o.orderStatus = :status " +
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"ORDER BY o.confirmedAt DESC")
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List<Order> findByUserIdAndStatus(
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@Param("userId") Long userId,
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@Param("status") OrderStatus status
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);
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// 특정 사용자의 주문 확정 시간 이전 주문 조회 (한달 이상 경과)
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@Query("SELECT o FROM Order o " +
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"WHERE o.user.id = :userId " +
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"AND o.orderStatus = :status " +
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"AND o.confirmedAt <= :beforeTime " +
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"ORDER BY o.confirmedAt DESC")
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List<Order> findByUserIdAndStatusAndConfirmedAtBefore(
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@Param("userId") Long userId,
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@Param("status") OrderStatus status,
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@Param("beforeTime") LocalDateTime beforeTime
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);
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}

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