using System;
using System.Collections.Generic;

namespace Server.Commands.Generic
{
  public sealed class LimitExtension : BaseExtension
  {
    public static ExtensionInfo ExtInfo = new ExtensionInfo(80, "Limit", 1, () => new LimitExtension());

    public override ExtensionInfo Info => ExtInfo;

    public int Limit{ get; private set; }

    public static void Initialize()
    {
      ExtensionInfo.Register(ExtInfo);
    }

    public override void Parse(Mobile from, string[] arguments, int offset, int size)
    {
      Limit = Utility.ToInt32(arguments[offset]);

      if (Limit < 0)
        throw new Exception("Limit cannot be less than zero.");
    }

    public override void Filter(List<object> list)
    {
      if (list.Count > Limit)
        list.RemoveRange(Limit, list.Count - Limit);
    }
  }
}