using MockingTutorial.Exceptions;

using MockingTutorial.Services;

namespace MockingTutorial

{

public class ReservationSystem

{

private readonly IBookingService bookingService;

public ReservationSystem(IBookingService bookingService)

{

this.bookingService = bookingService;

}

public async Task ReserveAsync(int amountOfBeds)

{

var rooms = await bookingService.GetRoomsAsync(amountOfBeds);

var firstAvailableRoom = rooms.FirstOrDefault(room => !room.IsReserved);

if (firstAvailableRoom is null)

{

throw new NoAvailableRoomsException(amountOfBeds);

}

await bookingService.ReserveRoomAsync(firstAvailableRoom.RoomId);

}

}

}