using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Mesnac.Action.Feeding.Qingquan
{
    /// <summary>
    /// PLCSchema.xml中的存盘数据项类 - 对应add节点
    /// </summary>
    public class PlcRecipeReaderItem
    {
        /// <summary>
        /// 默认构造方法
        /// </summary>
        public PlcRecipeReaderItem()
        {
            this.DataFieldName = string.Empty;
            this.PlcFiledName = string.Empty;
            this.DataType = string.Empty;
            this.PlcShifting = 0;
            this.DefaultValue = 0;
            this.ValueLen = 1;
            this.Multiply = 1;
            this.SetValue = null;
        }
        /// <summary>
        /// 数据库字段名
        /// </summary>
        public string DataFieldName { get; set; }
        /// <summary>
        /// Plc别名
        /// </summary>
        public string PlcFiledName { get; set; }
        /// <summary>
        /// 偏移值
        /// </summary>
        public int PlcShifting { get; set; }
        /// <summary>
        /// 默认值
        /// </summary>
        public int DefaultValue { get; set; }
        /// <summary>
        /// 长度
        /// </summary>
        public int ValueLen { get; set; }
        /// <summary>
        /// 数据处理方式
        /// </summary>
        public string DataType { get; set; }
        /// <summary>
        /// 乘数
        /// </summary>
        public int Multiply { get; set; }
        /// <summary>
        /// 原始值
        /// </summary>
        public int[] SetValue { get; set; }
        /// <summary>
        /// 数据转化值
        /// </summary>
        /// <returns></returns>
        public object GetValue()
        {
            if (string.IsNullOrWhiteSpace(DataType))
            {
                return GetValue_Null();
            }
            return GetValue_Null();
        }
        /// <summary>
        /// 对节点值进行除法运算
        /// </summary>
        /// <param name="buff">要处理的值</param>
        /// <returns>返回除法运算后的结果</returns>
        private double MultiplyData(double buff)
        {
            double result = buff;
            if (this.Multiply != 0)
            {
                result = result / (double)this.Multiply;
            }
            return result;
        }

        /// <summary>
        /// 获取对应的设备值
        /// </summary>
        /// <returns></returns>
        private double GetValue_Null()
        {
            if (this.SetValue.Length == 0)
            {
                return DefaultValue;
            }
            return MultiplyData(this.SetValue[0]);
        }

    }
}