feat: Add booking function (#62)

BE/airbnb/src/main/java/airbnb/controller/BookingController.java

@@ -0,0 +1,37 @@
+package airbnb.controller;
+
+import airbnb.domain.Booking;
+import airbnb.domain.Image;
+import airbnb.domain.Room;
+import airbnb.domain.User;
+import airbnb.request.BookingRequest;
+import airbnb.response.BookingResponse;
+import airbnb.service.BookingService;
+import airbnb.service.RoomService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api")
+public class BookingController {
+    private final RoomService roomService;
+    private final BookingService bookingService;
+
+    @PostMapping("/book/rooms/{roomId}")
+    public ResponseEntity<BookingResponse> reserve(@PathVariable Long roomId, @RequestBody BookingRequest reservationInfo) {
+        User user = new User();
+        Room room = roomService.findRoomById(roomId);
+        BookingResponse bookingResponse = bookingService.reserve(user, room, reservationInfo);
+        return ResponseEntity.ok(bookingResponse);
+    }
+
+    @DeleteMapping("/cancel/rooms/{roomId}")
+    public ResponseEntity<String> cancel() {
+        return new ResponseEntity<>("예약이 성공적으로 취소되었습니다.", HttpStatus.OK);
+    }
+
+}

BE/airbnb/src/main/java/airbnb/request/BookingRequest.java

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+package airbnb.request;
+
+import airbnb.domain.Guest;
+import lombok.Getter;
+
+@Getter
+public class BookingRequest {
+    private String checkIn;
+    private String checkOut;
+    private int adults;
+    private int children;
+    private int infants;
+    private int totalPrice;
+
+    public static Guest createGuest(BookingRequest bookingRequest) {
+        return Guest.builder()
+                .adults(bookingRequest.adults)
+                .children(bookingRequest.children)
+                .infants(bookingRequest.infants)
+                .build();
+    }
+}

BE/airbnb/src/main/java/airbnb/response/BookingResponse.java

@@ -0,0 +1,21 @@
+package airbnb.response;
+
+import lombok.Builder;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+@Getter
+@Builder
+public class BookingResponse {
+    private final String name;
+    private final List<String> roomImages;
+    private final String place;
+    private final String host;
+    private final LocalDateTime checkIn;
+    private final LocalDateTime checkOut;
+    private final int numberOfGuests;
+    private final int totalPrice;
+}

BE/airbnb/src/main/java/airbnb/service/BookingService.java

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+package airbnb.service;
+
+import airbnb.domain.Booking;
+import airbnb.domain.Room;
+import airbnb.domain.User;
+import airbnb.repository.BookingRepository;
+import airbnb.request.BookingRequest;
+import airbnb.response.BookingResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class BookingService {
+    private final BookingRepository bookingRepository;
+
+    public BookingResponse reserve(User user, Room room, BookingRequest reservationInfo) {
+        Booking booking = Room.createBooking(user, room, reservationInfo);
+        bookingRepository.save(booking);
+        return Booking.createBookingResponse(booking);
+    }
+}