using System;
using System.Collections.Generic;

namespace Aitex.Core.RT.IOCore
{
	/// <summary>
	/// 基于AO判断的互锁限制条件。
	/// </summary>
	internal class DoLimit : InterlockLimit<DOAccessor, bool>
	{
		public override bool CurrentValue => Io.Value;

		public override string LimitReason =>
			$"DO-{Io.IoTableIndex}({Io.Name}) = [{(Io.Value ? "ON" : "OFF")}]{(string.IsNullOrEmpty(Tip) ? "" : $",{Tip}")}";

		public DoLimit(DOAccessor doItem, string value, string tip, Dictionary<string, string> cultureTip)
			: base(doItem, value, tip, cultureTip)
		{
			if (bool.TryParse(value, out var limitValue))
				LimitValue = limitValue;
			else
				throw new InvalidCastException($"unable to convert {value} to boolean.");
		}
		
		protected override bool CheckInRange()
		{
			return CurrentValue == LimitValue;
		}
	}
}