[Feature] Step-2 잔여 좌석 조회 API 개발

app/src/main/java/com/picketing/www/business/domain/show/seatgrade/Seat.java → app/src/main/java/com/picketing/www/business/domain/show/seat/grade/Seat.java

@@ -1,4 +1,4 @@
-package com.picketing.www.business.domain.show.seatgrade;
+package com.picketing.www.business.domain.show.seat.grade;
 
 import com.picketing.www.persistence.table.BaseEntity;
 
@@ -8,10 +8,12 @@
 import jakarta.persistence.Id;
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
 
 @Entity
+@Table(name = "SEATS")
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class Seat extends BaseEntity {
 	@Id
@@ -21,7 +23,4 @@ public class Seat extends BaseEntity {
 	@ManyToOne
 	@JoinColumn(name = "SEAT_GRADE_ID")
 	private SeatGrade seatGrade;
-
-	// TODO 23.09.13: Time schedule id mapping. @ManyToOne
-	private Long timeScheduleId;
 }

app/src/main/java/com/picketing/www/business/domain/show/seatgrade/SeatGrade.java → app/src/main/java/com/picketing/www/business/domain/show/seat/grade/SeatGrade.java

@@ -1,18 +1,27 @@
-package com.picketing.www.business.domain.show.seatgrade;
+package com.picketing.www.business.domain.show.seat.grade;
+
+import java.util.ArrayList;
+import java.util.List;
 
 import com.picketing.www.business.domain.show.Show;
 
 import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
 import lombok.AccessLevel;
+import lombok.Getter;
 import lombok.NoArgsConstructor;
 
 @Entity
+@Table(name = "SEAT_GRADES")
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter(AccessLevel.PROTECTED)
 public class SeatGrade {
 
 	@Id
@@ -23,4 +32,11 @@ public class SeatGrade {
 	@ManyToOne
 	@JoinColumn(name = "SHOW_ID")
 	private Show show;
+
+	@OneToMany(mappedBy = "seatGrade", fetch = FetchType.LAZY)
+	private List<Seat> seats = new ArrayList<>();
+
+	private Long timeScheduleId;
+
+	private Long remainingSeatCount;
 }

app/src/main/java/com/picketing/www/business/domain/show/seat/grade/SeatGradeFactory.java

@@ -0,0 +1,19 @@
+package com.picketing.www.business.domain.show.seat.grade;
+
+import java.util.List;
+
+import org.springframework.stereotype.Component;
+
+import com.picketing.www.presentation.dto.response.show.seat.grade.RemainingSeatCountResponse;
+
+@Component
+public class SeatGradeFactory {
+	public List<RemainingSeatCountResponse> toRemainingSeatCountResponses(List<SeatGrade> seatGrades) {
+		return seatGrades.stream()
+			.map(seatGrade -> {
+				return new RemainingSeatCountResponse(seatGrade.getId(), seatGrade.getName(),
+					seatGrade.getRemainingSeatCount());
+			})
+			.toList();
+	}
+}

app/src/main/java/com/picketing/www/business/service/show/ShowService.java

@@ -6,6 +6,8 @@
 import org.springframework.stereotype.Service;
 
 import com.picketing.www.business.domain.show.Show;
+import com.picketing.www.business.domain.show.seat.grade.SeatGrade;
+import com.picketing.www.business.service.show.seat.grade.SeatGradeService;
 import com.picketing.www.business.type.Genre;
 import com.picketing.www.business.type.SubGenre;
 import com.picketing.www.persistence.repository.show.ShowRepository;
@@ -17,8 +19,13 @@
 public class ShowService {
 
 	private final ShowRepository showRepository;
+	private final SeatGradeService seatGradeService;
 
 	public List<Show> getShowList(Genre genre, SubGenre subGenre, Pageable pageable) {
 		return showRepository.findShowsByGenreAndSubGenre(genre, subGenre, pageable);
 	}
+
+	public List<SeatGrade> getRemainingSeatCounts(Long showId, Long timeScheduleId) {
+		return seatGradeService.getRemainingSeatGradeCount(showId, timeScheduleId);
+	}
 }

app/src/main/java/com/picketing/www/business/service/show/seat/grade/SeatGradeService.java

@@ -0,0 +1,24 @@
+package com.picketing.www.business.service.show.seat.grade;
+
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.picketing.www.business.domain.show.seat.grade.SeatGrade;
+import com.picketing.www.persistence.repository.show.seat.grade.SeatGradeRepository;
+
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class SeatGradeService {
+
+	private final SeatGradeRepository seatGradeRepository;
+
+	@Transactional(readOnly = true)
+	public List<SeatGrade> getRemainingSeatGradeCount(Long showId, Long timeScheduleId) {
+		return seatGradeRepository.findAllByShowIdAndTimeScheduleId(showId,
+			timeScheduleId);
+	}
+}

app/src/main/java/com/picketing/www/persistence/repository/show/seat/grade/SeatGradeRepository.java

@@ -0,0 +1,11 @@
+package com.picketing.www.persistence.repository.show.seat.grade;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.picketing.www.business.domain.show.seat.grade.SeatGrade;
+
+public interface SeatGradeRepository extends JpaRepository<SeatGrade, Long> {
+	List<SeatGrade> findAllByShowIdAndTimeScheduleId(Long showId, Long timeScheduleId);
+}

app/src/main/java/com/picketing/www/presentation/controller/show/ShowController.java

@@ -9,16 +9,20 @@
 import org.springframework.data.domain.Sort;
 import org.springframework.data.web.PageableDefault;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 import com.picketing.www.business.domain.show.Show;
 import com.picketing.www.business.domain.show.ShowFactory;
+import com.picketing.www.business.domain.show.seat.grade.SeatGrade;
+import com.picketing.www.business.domain.show.seat.grade.SeatGradeFactory;
 import com.picketing.www.business.service.show.ShowService;
 import com.picketing.www.business.type.Genre;
 import com.picketing.www.business.type.SubGenre;
 import com.picketing.www.presentation.dto.response.show.ShowMainResponse;
+import com.picketing.www.presentation.dto.response.show.seat.grade.RemainingSeatCountResponse;
 
 import lombok.RequiredArgsConstructor;
 
@@ -28,6 +32,7 @@
 public class ShowController {
 
 	private final ShowFactory showFactory;
+	private final SeatGradeFactory seatGradeFactory;
 
 	private final ShowService showService;
 
@@ -42,4 +47,12 @@ public Page<ShowMainResponse> getShowListWithPagination(
 			.collect(Collectors.toList());
 		return new PageImpl<>(response, pageable, response.size());
 	}
+
+	@GetMapping("/{showId}/schedule/times/{timeScheduleId}/seats/grades/remaining-counts")
+	public List<RemainingSeatCountResponse> getRemainingSeatCountsInShow(
+		@PathVariable Long showId, @PathVariable Long timeScheduleId
+	) {
+		List<SeatGrade> remainingSeatCounts = showService.getRemainingSeatCounts(showId, timeScheduleId);
+		return seatGradeFactory.toRemainingSeatCountResponses(remainingSeatCounts);
+	}
 }

app/src/main/java/com/picketing/www/presentation/dto/response/show/seat/grade/RemainingSeatCountResponse.java

@@ -0,0 +1,8 @@
+package com.picketing.www.presentation.dto.response.show.seat.grade;
+
+public record RemainingSeatCountResponse(
+	Long id,
+	String name,
+	Long remainingSeatCount
+) {
+}

app/src/test/java/com/picketing/www/presentation/controller/show/ShowControllerTest.java

@@ -104,4 +104,33 @@ void hasGenreAndSubGenreSearchQuery() throws Exception {
 				.andExpect(status().isOk());
 		}
 	}
+
+	@Nested
+	@DisplayName("SeatGrade 남은 좌석 조회")
+	class GetRemainingSeatCountsInShow {
+
+		@Test
+		@DisplayName("데이터가 존재하지 않는 경우 정상 조회")
+		void noDataButOk() throws Exception {
+			MockHttpSession session = new MockHttpSession();
+			session.setAttribute("login_user", 1L);
+
+			Integer showId = 1;
+			Integer timeScheduleId = 1;
+			String url = String.format(
+				"/api/shows/%s/schedule/times/%s/seats/grades/remaining-counts",
+				showId, timeScheduleId
+			);
+
+			System.out.println("url: " + url);
+
+			mockMvc.perform(
+					MockMvcRequestBuilders
+						.get(url)
+						.session(session)
+						.accept(MediaType.APPLICATION_JSON)
+				).andDo(print())
+				.andExpect(status().isOk());
+		}
+	}
 }