using System.Diagnostics.CodeAnalysis;
using ProjectBulldozer.Drawning;
using ProjectBulldozer.Entities;

namespace ProjectBulldozer.Generics
{
    internal class DrawingBulldozerEqutables : IEqualityComparer<DrawingTractor?>
    {
        public bool Equals(DrawingTractor? x, DrawingTractor? y)
        {
            if (x == null || x.EntityTractor == null)
            {
                throw new ArgumentNullException(nameof(x));
            }
            if (y == null || y.EntityTractor == null)
            {
                throw new ArgumentNullException(nameof(y));
            }
            if (x.GetType().Name != y.GetType().Name)
            {
                return false;
            }
            if (x.EntityTractor.Speed != y.EntityTractor.Speed)
            {
                return false;
            }
            if (x.EntityTractor.Weight != y.EntityTractor.Weight)
            {
                return false;
            }
            if (x.EntityTractor.BodyColor != y.EntityTractor.BodyColor)
            {
                return false;
            }
            if (x is DrawingBulldozer && y is DrawingBulldozer)
            {
                if ((x.EntityTractor as EntityBulldozer).Otval != (y.EntityTractor as EntityBulldozer).Otval)
                {
                    return false;
                }
                if ((x.EntityTractor as EntityBulldozer).ThirdWheel != (y.EntityTractor as EntityBulldozer).ThirdWheel)
                {
                    return false;
                }
            }
            return true;

        }

        public int GetHashCode([DisallowNull] DrawingTractor obj)
        {
            return obj.GetHashCode();
        }
    }
}