using LawFimDataModels.Enums;
using LawFimDataModels.Models;
using LawFirmContracts.BindingModels;
using LawFirmContracts.ViewModels;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.Design;

namespace LawFirmDatabaseImplement.Models
{
	public class Hearing :IHearingModel
	{
		public int Id { get; private set; }
		[Required]
		public DateTime HearingDate { get; private set; }
		[Required]
		public string Judge{ get; private set; } = string.Empty;
		public int GuarantorId { get; set; }
		private Dictionary<int, ILawyerModel>? _hearingLawyers = null;
		[NotMapped]
		public Dictionary<int, ILawyerModel> HearingLawyers
		{
			get
			{
				if (_hearingLawyers == null)
				{
					using var context = new LawFirmDatabase();
					_hearingLawyers = Lawyers
					.ToDictionary(x => x.LawyerId, x => (context.Lawyers
					.FirstOrDefault(y => y.Id == x.LawyerId) as ILawyerModel));
				}
				return _hearingLawyers;
			}
		}
		[ForeignKey("HearingId")]
		public virtual List<HearingLawyer> Lawyers { get; set; } = new();
		public static Hearing? Create(LawFirmDatabase context, HearingBindingModel? model)
		{
			if (model == null)
			{
				return null;
			}
			return new Hearing()
			{
				Id = model.Id,
				HearingDate = model.HearingDate,
				Judge = model.Judge,
				GuarantorId = model.GuarantorId,
				Lawyers = model.HearingLawyers.Select(x => new HearingLawyer
				{
					Lawyer = context.Lawyers.First(y => y.Id == x.Key)
				}).ToList()
			};
		}
		public void Update(HearingBindingModel? model)
		{
			if (model == null)
			{
				return;
			}
			HearingDate = model.HearingDate;
			Judge = model.Judge;
		}
		public HearingViewModel GetViewModel => new()
		{
			Id = Id,
			HearingDate = HearingDate,
			Judge = Judge,
			GuarantorId = GuarantorId,
			HearingLawyers = HearingLawyers
		};
		public void UpdateLawyers(LawFirmDatabase context, HearingBindingModel model)
		{
			var hearingLawyer = context.HearingLawyers
				.Where(rec => rec.HearingId == model.Id)
				.ToList();
			if (hearingLawyer != null && hearingLawyer.Count > 0)
			{
				context.HearingLawyers.RemoveRange(hearingLawyer.Where(rec
			   => !model.HearingLawyers.ContainsKey(rec.LawyerId)));
				context.SaveChanges();
			}
			var _hearing = context.Hearings.First(x => x.Id == Id);
			foreach (var pc in model.HearingLawyers)
			{
				if (!HearingLawyers.ContainsKey(pc.Key))
				{
					context.HearingLawyers.Add(new HearingLawyer
					{
						Hearing = _hearing,
						Lawyer = context.Lawyers.First(x => x.Id == pc.Key),
					});
				}
				context.SaveChanges();
			}
			_hearingLawyers = null;
		}
	}
}