using System;

namespace Quadarax.Foundation.Core.Data.Entity
{
    public class NoKey : IEquatable<NoKey>
    {
        public Guid Hash { get; }

        public NoKey()
        {
            Hash = Guid.NewGuid();
        }

        public bool Equals(NoKey other)
        {
            if (other == null)
                return false;
            return Hash == other.Hash;
        }

        public override bool Equals(object obj)
        {
            if (ReferenceEquals(null, obj)) return false;
            if (ReferenceEquals(this, obj)) return true;
            if (obj.GetType() != this.GetType()) return false;
            return Equals((NoKey)obj);
        }

        public override int GetHashCode()
        {
            return Hash.GetHashCode();
        }

        public static bool operator ==(NoKey left, NoKey right)
        {
            return Equals(left, right);
        }

        public static bool operator !=(NoKey left, NoKey right)
        {
            return !Equals(left, right);
        }
    }
}