using System.Diagnostics.CodeAnalysis;
using WarmlyLocomotive.DrawningObjects;
using WarmlyLocomotive.Entities;

namespace WarmlyLocomotive
{
    internal class DrawingWarmlyLocomotiveEqutables : IEqualityComparer<DrawningWarmlyLocomotive?>
    {
        public bool Equals(DrawningWarmlyLocomotive? x, DrawningWarmlyLocomotive? y)
        {
            if (x == null || x.EntityWarmlyLocomotive == null)
            {
                throw new ArgumentNullException(nameof(x));
            }
            if (y == null || y.EntityWarmlyLocomotive == null)
            {
                throw new ArgumentNullException(nameof(y));
            }
            if (x.GetType().Name != y.GetType().Name)
            {
                return false;
            }
            if (x.EntityWarmlyLocomotive.Speed != y.EntityWarmlyLocomotive.Speed)
            {
                return false;
            }
            if (x.EntityWarmlyLocomotive.Weight != y.EntityWarmlyLocomotive.Weight)
            {
                return false;
            }
            if (x.EntityWarmlyLocomotive.BodyColor != y.EntityWarmlyLocomotive.BodyColor)
            {
                return false;
            }
            if (x is DrawningWarmlyLocomotiveWithTrumpet && y is DrawningWarmlyLocomotiveWithTrumpet)
            {
                EntityWarmlyLocomotiveWithTrumpet EntityX = (EntityWarmlyLocomotiveWithTrumpet)x.EntityWarmlyLocomotive;
                EntityWarmlyLocomotiveWithTrumpet EntityY = (EntityWarmlyLocomotiveWithTrumpet)y.EntityWarmlyLocomotive;
                if (EntityX.Trumpet != EntityY.Trumpet)
                    return false;
                if (EntityX.Luggage != EntityY.Luggage)
                    return false;
                if (EntityX.AdditionalColor != EntityY.AdditionalColor)
                    return false;
            }
            return true;
        }
        public int GetHashCode([DisallowNull] DrawningWarmlyLocomotive? obj)
        {
            return obj.GetHashCode();
        }
    }
}