using System.Linq;

namespace jive
{
  public class ValueType<T>
  {
    public override bool Equals(object obj)
    {
      if (ReferenceEquals(null, obj)) return false;
      if (ReferenceEquals(this, obj)) return true;
      if (!(obj is ValueType<T>)) return false;
      return Equals((ValueType<T>) obj);
    }

    public bool Equals(ValueType<T> other)
    {
      if (ReferenceEquals(null, other)) return false;
      if (ReferenceEquals(this, other)) return true;
      return PropertiesMatch(other);
    }

    bool PropertiesMatch(ValueType<T> other)
    {
      return !GetType().GetProperties().Any(x =>
          {
          var thisValue = x.GetValue(this, null);
          var otherValue = x.GetValue(other, null);
          return !thisValue.Equals(otherValue);
          });
    }

    public override int GetHashCode()
    {
      return GetType().GetProperties().Aggregate(0, (prev, prop) => (prev*397) ^ prop.GetHashCode());
    }
  }
}