namespace Yw.Model.Health
{
    /// <summary>
    /// 
    /// </summary>
    public class AutoEvaluationItem : JsonList<AutoEvaluationItem>
    {
        /// <summary>
        /// 下限
        /// </summary>
        public double? MinValue { get; set; }

        /// <summary>
        /// 上限
        /// </summary>
        public double? MaxValue { get; set; }

        /// <summary>
        /// 表达式（计算表达式）
        /// </summary>
        public string Expression { get; set; }

        /// <summary>
        /// 评价
        /// </summary>
        public bool Evaluate(double value, out double outValue)
        {
            outValue = value;
            if (MinValue.HasValue)
            {
                if (value < MinValue.Value)
                    return false;
            }
            if (MaxValue.HasValue)
            {
                if (value > MaxValue.Value)
                    return false;
            }
            if (string.IsNullOrEmpty(Expression))
                return false;
            try
            {
                outValue = DynamicExpresso.Calculator.Eval(this.Expression, value);
                return true;
            }
            catch
            {
                return false;
            }

        }



    }
}