Merge pull request #15 from DO-SOPT-CDS-TEAM-WEB7/feat/#14

[#14] feat : 나라별 예약 최저가격 순으로 조회하기

Author: sss4920

skyscanner/src/main/java/org/third/thirdseminar/controller/dto/response/AirReservationResponse.java

@@ -4,7 +4,7 @@
 
 public record AirReservationResponse(
         DateDto dateDto,
-        List<AirDto> airDto
+        List<ReservationDto> reservationListDto
 
 ){
 }

skyscanner/src/main/java/org/third/thirdseminar/controller/dto/response/AirDto.java renamed to skyscanner/src/main/java/org/third/thirdseminar/controller/dto/response/ReservationDto.java

@@ -2,16 +2,16 @@
 
 import org.third.thirdseminar.domain.Reservation;
 
-public record AirDto (
-        Long airId,
+public record ReservationDto (
+        Long reservationId,
         String airName,
         TimeRangeDto startTime,
         TimeRangeDto endTime,
         String price,
         int CO2
 ){
-    public static AirDto of(Reservation reservation, String price, TimeRangeDto startTime, TimeRangeDto endTime) {
-        return new AirDto(
+    public static ReservationDto of(Reservation reservation, String price, TimeRangeDto startTime, TimeRangeDto endTime) {
+        return new ReservationDto(
                 reservation.getId(),
                 reservation.getAir().getAirName(),
                 startTime,

skyscanner/src/main/java/org/third/thirdseminar/controller/dto/response/TimeRangeDto.java

@@ -2,12 +2,12 @@
 
 
 public record TimeRangeDto (
-        String startTime,
-        String endTime,
+        String start,
+        String end,
         String during){
-    public static TimeRangeDto of(String startTime, String endTime, String during) {
+    public static TimeRangeDto of(String start, String end, String during) {
         return new TimeRangeDto(
-                startTime, endTime, during
+                start, end, during
         );
     }
 }

skyscanner/src/main/java/org/third/thirdseminar/domain/ReservationMinPriceDTO.java

@@ -0,0 +1,12 @@
+package org.third.thirdseminar.domain;
+
+
+public record ReservationMinPriceDTO (
+    Reservation reservation,
+    Long minPrice
+){
+    public static ReservationMinPriceDTO of(Reservation reservation,Long minPrice) {
+        return new ReservationMinPriceDTO(reservation, minPrice);
+    }
+
+}

skyscanner/src/main/java/org/third/thirdseminar/infrastructure/ReservationJpaRepository.java

@@ -3,14 +3,23 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
+import org.third.thirdseminar.controller.dto.response.AirDto;
 import org.third.thirdseminar.domain.Reservation;
+import org.third.thirdseminar.domain.ReservationMinPriceDTO;
 
 import java.util.List;
+import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
 
 public interface ReservationJpaRepository extends JpaRepository<Reservation, Long> {
 	@Query("SELECT r FROM Reservation r WHERE r.cityName <> :cityName")
 	List<Reservation> findAllExcludingCity(@Param("cityName") String cityName);
 
+
+	@Query("SELECT r, MIN(t.price) FROM Reservation r JOIN r.tickets t WHERE r.country = :country GROUP BY r ORDER BY MIN(t.price) ASC")
+	List<Object[]> findReservations(@Param("country") String country);
+
+
 	Optional<Reservation> findById(Long reservationId);
 }

skyscanner/src/main/java/org/third/thirdseminar/service/ReservationService.java

@@ -5,16 +5,12 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.third.thirdseminar.controller.dto.request.AirReservationRequest;
-import org.third.thirdseminar.controller.dto.response.AirDto;
 import org.third.thirdseminar.controller.dto.response.AirReservationResponse;
 import org.third.thirdseminar.controller.dto.response.DateDto;
 import org.third.thirdseminar.controller.dto.response.TimeRangeDto;
 import org.third.thirdseminar.controller.dto.request.CreateReservationRequest;
 import org.third.thirdseminar.controller.dto.response.*;
-import org.third.thirdseminar.domain.Reservation;
-import org.third.thirdseminar.domain.ReservationResult;
-import org.third.thirdseminar.domain.Ticket;
-import org.third.thirdseminar.domain.TimeRange;
+import org.third.thirdseminar.domain.*;
 import org.third.thirdseminar.infrastructure.ReservationJpaRepository;
 import org.third.thirdseminar.infrastructure.ReservationResultJpaRepository;
 import org.third.thirdseminar.infrastructure.TicketJpaRepository;
@@ -39,12 +35,17 @@ public class ReservationService {
     private final DecimalFormat df = new DecimalFormat("###,###");
 
     public AirReservationResponse getReservations(AirReservationRequest reqeust){
-        List<Reservation> reservations = reservationJpaRepository.findAll();
+        List<ReservationMinPriceDTO> reservationMinPriceDtoList = reservationJpaRepository.findReservations("일본").stream().map(
+                row -> ReservationMinPriceDTO.of(
+                        (Reservation) row[0],
+                        (Long) row[1]
+                )).toList();
 
-        List<AirDto> airList = new ArrayList<>();
-        for(Reservation reservation : reservations){
-            List<Ticket> ticket= tickectJpaRepository.findByReservationIdOrderByPriceAsc(reservation.getId());
-            airList.add(AirDto.of(reservation, df.format(ticket.get(0).getPrice()), TimeRangeFormat(reservation.getStartTime()), TimeRangeFormat(reservation.getEndTime())));
+
+        List<ReservationDto> airList = new ArrayList<>();
+        for(ReservationMinPriceDTO reservationMinPriceDTO : reservationMinPriceDtoList){
+            Reservation reservation = reservationMinPriceDTO.reservation();
+            airList.add(ReservationDto.of(reservation, df.format(reservationMinPriceDTO.minPrice()), TimeRangeFormat(reservation.getStartTime()), TimeRangeFormat(reservation.getEndTime())));
         }
         DateDto dateDto = new DateDto(reqeust.startDate(), reqeust.endDate());
         return new AirReservationResponse(dateDto, airList);