Feature: 티켓팅 서비스를 위해 기본적인 구현을 한다.

src/main/java/com/thirdparty/ticketing/domain/ticket/Ticket.java

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+package com.thirdparty.ticketing.domain.ticket;
+
+import java.util.UUID;
+
+import jakarta.persistence.*;
+
+import com.thirdparty.ticketing.domain.BaseEntity;
+import com.thirdparty.ticketing.domain.member.Member;
+import com.thirdparty.ticketing.domain.seat.Seat;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Entity
+@AllArgsConstructor
+@Table(name = "member")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Ticket extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private UUID ticketId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id")
+    private Member member;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "seat_id")
+    private Seat seat;
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/controller/TicketController.java

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+package com.thirdparty.ticketing.domain.ticket.controller;
+
+import jakarta.validation.Valid;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.thirdparty.ticketing.domain.ItemResult;
+import com.thirdparty.ticketing.domain.ticket.dto.SeatSelectionRequest;
+import com.thirdparty.ticketing.domain.ticket.dto.TicketElement;
+import com.thirdparty.ticketing.domain.ticket.dto.TicketPaymentRequest;
+import com.thirdparty.ticketing.domain.ticket.service.TicketService;
+import com.thirdparty.ticketing.global.security.LoginMember;
+
+import lombok.RequiredArgsConstructor;
+
+@RestController("/api")
+@RequiredArgsConstructor
+public class TicketController {
+    private final TicketService ticketService;
+
+    @GetMapping("/members/tickets")
+    public ResponseEntity<ItemResult<TicketElement>> selectMyTickets(@LoginMember String email) {
+        return ResponseEntity.ok().body(ticketService.selectMyTicket(email));
+    }
+
+    @PostMapping("/seats/select")
+    public ResponseEntity<Void> selectSeat(
+            @RequestBody @Valid SeatSelectionRequest seatSelectionRequest) {
+        ticketService.selectSeat(seatSelectionRequest);
+        return ResponseEntity.ok().build();
+    }
+
+    @PostMapping("/tickets")
+    public ResponseEntity<Void> payTicket(
+            @RequestBody @Valid TicketPaymentRequest ticketPaymentRequest) {
+        ticketService.reservationTicket(ticketPaymentRequest);
+        return ResponseEntity.ok().build();
+    }
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/dto/SeatSelectionRequest.java

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+package com.thirdparty.ticketing.domain.ticket.dto;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+
+import lombok.Data;
+
+@Data
+public class SeatSelectionRequest {
+    @NotNull(message = "좌석 ID를 요청하지 않았습니다.")
+    @Min(value = 1, message = "좌석 ID는 1 이상이어야 합니다.")
+    private Long seatId;
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/dto/TicketElement.java

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+package com.thirdparty.ticketing.domain.ticket.dto;
+
+import java.util.UUID;
+
+import com.thirdparty.ticketing.domain.ticket.Ticket;
+
+import lombok.Data;
+
+@Data
+public class TicketElement {
+    private final UUID id;
+
+    public static TicketElement of(Ticket ticket) {
+        return new TicketElement(ticket.getTicketId());
+    }
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/dto/TicketPaymentRequest.java

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+package com.thirdparty.ticketing.domain.ticket.dto;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+
+import lombok.Data;
+
+@Data
+public class TicketPaymentRequest {
+    @NotNull(message = "좌석 ID를 요청하지 않았습니다.")
+    @Min(value = 1, message = "좌석 ID는 1 이상이어야 합니다.")
+    private Long seatId;
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/repository/TicketRepository.java

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+package com.thirdparty.ticketing.domain.ticket.repository;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.thirdparty.ticketing.domain.member.Member;
+import com.thirdparty.ticketing.domain.ticket.Ticket;
+
+public interface TicketRepository extends JpaRepository<Ticket, Integer> {
+    List<Ticket> findAllByMember(Member member);
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/service/CacheTicketService.java

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+package com.thirdparty.ticketing.domain.ticket.service;
+
+import com.thirdparty.ticketing.domain.member.repository.MemberRepository;
+import com.thirdparty.ticketing.domain.seat.repository.SeatRepository;
+import com.thirdparty.ticketing.domain.ticket.dto.SeatSelectionRequest;
+import com.thirdparty.ticketing.domain.ticket.dto.TicketPaymentRequest;
+import com.thirdparty.ticketing.domain.ticket.repository.TicketRepository;
+
+public class CacheTicketService extends TicketService {
+    public CacheTicketService(
+            MemberRepository memberRepository,
+            TicketRepository ticketRepository,
+            SeatRepository seatRepository) {
+        super(memberRepository, ticketRepository, seatRepository);
+    }
+
+    @Override
+    public void selectSeat(SeatSelectionRequest seatSelectionRequest) {}
+
+    @Override
+    public void reservationTicket(TicketPaymentRequest ticketPaymentRequest) {}
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/service/PersistenceTicketService.java

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+package com.thirdparty.ticketing.domain.ticket.service;
+
+import org.springframework.stereotype.Service;
+
+import com.thirdparty.ticketing.domain.member.repository.MemberRepository;
+import com.thirdparty.ticketing.domain.seat.repository.SeatRepository;
+import com.thirdparty.ticketing.domain.ticket.dto.SeatSelectionRequest;
+import com.thirdparty.ticketing.domain.ticket.dto.TicketPaymentRequest;
+import com.thirdparty.ticketing.domain.ticket.repository.TicketRepository;
+
+@Service
+public class PersistenceTicketService extends TicketService {
+    public PersistenceTicketService(
+            MemberRepository memberRepository,
+            TicketRepository ticketRepository,
+            SeatRepository seatRepository) {
+        super(memberRepository, ticketRepository, seatRepository);
+    }
+
+    @Override
+    public void selectSeat(SeatSelectionRequest seatSelectionRequest) {}
+
+    @Override
+    public void reservationTicket(TicketPaymentRequest ticketPaymentRequest) {}
+}

src/main/java/com/thirdparty/ticketing/domain/ticket/service/TicketService.java

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+package com.thirdparty.ticketing.domain.ticket.service;
+
+import java.util.List;
+
+import com.thirdparty.ticketing.domain.ItemResult;
+import com.thirdparty.ticketing.domain.common.TicketingException;
+import com.thirdparty.ticketing.domain.member.Member;
+import com.thirdparty.ticketing.domain.member.repository.MemberRepository;
+import com.thirdparty.ticketing.domain.seat.repository.SeatRepository;
+import com.thirdparty.ticketing.domain.ticket.dto.SeatSelectionRequest;
+import com.thirdparty.ticketing.domain.ticket.dto.TicketElement;
+import com.thirdparty.ticketing.domain.ticket.dto.TicketPaymentRequest;
+import com.thirdparty.ticketing.domain.ticket.repository.TicketRepository;
+
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public abstract class TicketService {
+    private final MemberRepository memberRepository;
+    private final TicketRepository ticketRepository;
+    private final SeatRepository seatRepository;
+
+    public ItemResult<TicketElement> selectMyTicket(String memberEmail) {
+        Member member =
+                memberRepository
+                        .findByEmail(memberEmail)
+                        .orElseThrow(() -> new TicketingException("Member not found"));
+
+        List<TicketElement> ticketElementList =
+                ticketRepository.findAllByMember(member).stream().map(TicketElement::of).toList();
+
+        return ItemResult.of(ticketElementList);
+    }
+
+    public abstract void selectSeat(SeatSelectionRequest seatSelectionRequest);
+
+    public abstract void reservationTicket(TicketPaymentRequest ticketPaymentRequest);
+}