using System;
using System.Collections.Generic;
using Kreta.Core;
using Kreta.Core.Enum;
using Kreta.Core.Exceptions;
using Kreta.Ellenorzo.Domain.VN.Interfaces;
using Kreta.Ellenorzo.Domain.VN.Logic;
using Kreta.Enums;

namespace Kreta.Ellenorzo.Domain.VN.UniqueIdentifier
{
    public class OktatasiNevelesiFeladatUid : IReadonlyUidRaw, IEqualityComparer<OktatasiNevelesiFeladatUid>
    {
        public OktatasiNevelesiFeladatUid(int? id, OktatasiNevelesiFeladatEnum? oktatasiNevelesiFeladat)
        {
            Id = id;
            OktatasiNevelesiFeladat = oktatasiNevelesiFeladat;
            UidRaw = UidLogic.Concat(id, oktatasiNevelesiFeladat);
        }

        public OktatasiNevelesiFeladatUid(string uidRaw)
        {
            var compositeKeyElements = UidLogic.GetCompositeKeyElements(uidRaw);
            if (compositeKeyElements != null)
            {
                Id = Extensions.ToNullableInt(compositeKeyElements[0]);
                OktatasiNevelesiFeladat = Enum.IsDefined(typeof(OktatasiNevelesiFeladatEnum), compositeKeyElements[1]) ? (OktatasiNevelesiFeladatEnum?)Enum.Parse(typeof(OktatasiNevelesiFeladatEnum), compositeKeyElements[1]) : null;
                UidRaw = uidRaw;
            }
            else
            {
                throw new BlException(BlExceptionType.ValtozoErtekeNemLehetNull);
            }
        }

        public int? Id { get; private set; }

        public OktatasiNevelesiFeladatEnum? OktatasiNevelesiFeladat { get; set; }

        public string UidRaw { get; private set; }

        public bool Equals(OktatasiNevelesiFeladatUid x, OktatasiNevelesiFeladatUid y) => x == y || (x.Id == y.Id && x.OktatasiNevelesiFeladat == y.OktatasiNevelesiFeladat);

        public int GetHashCode(OktatasiNevelesiFeladatUid obj) => obj.UidRaw.GetHashCode();
    }
}