using BulletinBoardContracts.BindingModels;
using BulletinBoardContracts.ViewModels;
using BulletinBoardDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Diagnostics;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;

namespace BulletinBoardDatabase.Models
{
	public class City : ICityModel
	{
		[Required]
		public string CityName { get; set; } = string.Empty;

		[Required]
		public int? RegionId { get; set; }

		public int? Id { get; private set; }

		[ForeignKey("RegionId")]
		List<Announcement> AnnouncementCity { get; set; } = new();

		public virtual Region Region { get; set; }

		public static City? Create(CityBindingModel model)
		{
			if (model == null)
			{
				return null;
			}
			return new City()
			{
				Id = model.Id,
				CityName = model.CityName,
                RegionId = model.RegionId,
			};
		}

		public void Update(CityBindingModel model)
		{
			if (model == null)
			{
				return;
			}
			CityName = model.CityName;
			RegionId = model.RegionId;
		}

		public CityViewModel GetViewModel => new()
		{
			Id = Id,
			CityName = CityName,
			RegionId = RegionId,
			RegionName = Region == null ? string.Empty : Region.RegionName,
		};

		public string ObjectId => throw new NotImplementedException();
	}
}