Otel Rezervasyon Sistemi

using Microsoft.EntityFrameworkCore;
using OtelZone.DataAccess.Context;
using OtelZone.Entity.Entities;
 
namespace OtelZone.Business.HotelService
{
    public class HotelService : IHotelService
    {
        private readonly OtelZoneContext _context;
 
        public HotelService(OtelZoneContext context)
        {
            _context = context;
        }
 
        public async Task<bool> OtelKaydet(string hotelName, string hotelAddress, short rating, string hotelDesc, string hotelImgUrl, int cityId, int districtId)
        {
            if (string.IsNullOrWhiteSpace(hotelAddress)) return false;
 
            var existingHotel = await _context.Hotels
                .FirstOrDefaultAsync(u => u.HotelAdress == hotelAddress);
 
            if (existingHotel != null) return false;
 
            var hotel = new Hotel
            {
                HotelName = hotelName,
                HotelAdress = hotelAddress,
                Rating = rating,
                HotelDesc = hotelDesc,
                HotelImgUrl = hotelImgUrl,
                HotelIsActive = true,
                CityId = cityId,
                DistrictId = districtId
            };
 
            _context.Hotels.Add(hotel);
            await _context.SaveChangesAsync();
            return true;
        }
    }
}

public async Task<bool> IsRoomAvailableAsync(int roomId, DateTime checkIn, DateTime checkOut)
{
    return !await _context.Bookings.AnyAsync(b =>
        b.RoomId == roomId &&
        b.Status != BookingStatus.Cancelled &&
        checkIn < b.CheckOutDate &&
        checkOut > b.CheckInDate
    );
}