namespace YLErp.Models
{
    /// <summary>
    /// 预付金参数Model
    /// </summary>
    public class MarginParamModel
    {
        private double minPriceChange = 0.01;

        /// <summary>
        /// 预付金比率
        /// </summary>
        public double? MarginRate { get; set; }

        /// <summary>
        /// Span波动率变动(这个值在页面配置上限制为正数)
        /// </summary>
        public double? VolatilityRate { get; set; }

        /// <summary>
        /// Span涨跌幅度
        /// </summary>
        public double? UpDownLimit { get; set; }

        /// <summary>
        /// Span涨跌幅度是否绝对值
        /// </summary>
        public bool IsUpDownLimitFixed { get; set; }

        /// <summary>
        /// 最小价格变动(默认0.01)(最小取0.01)
        /// </summary>
        public double MinPriceChange
        {
            get { return minPriceChange; }
            set { minPriceChange = value < 0.01 ? 0.01 : value; }
        }

        /// <summary>
        /// 
        /// </summary>
        public static MarginParamModel Create(double? MarginRate, string VolatilityRate, string UpDownLimit, bool checkUpDownLimitFixed)
        {
            var model = new MarginParamModel { MarginRate = MarginRate };

            if (NumberHelper.TryParse(VolatilityRate?.TrimToNull(), out var dvalue, out var isPercent))
            {
                model.VolatilityRate = dvalue;
            }

            if (NumberHelper.TryParse(UpDownLimit?.TrimToNull(), out dvalue, out isPercent))
            {
                model.UpDownLimit = dvalue;
                model.IsUpDownLimitFixed = checkUpDownLimitFixed && !isPercent;
            }

            return model;
        }
    }
}