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

namespace Mesnac.Action.Feeding.Qingquan
{
    /// <summary>
    /// PlcSchema.xml文档中PLC下传数据项类  -- 对应add节点
    /// </summary>
    public class PlcRecipeWriteItem
    {
        public PlcRecipeWriteItem()
        {
            this.DataFieldName = string.Empty;
            this.EquipRunName = 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 EquipRunName { 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 object SetValue { get; set; }
        /// <summary>
        /// 写入数据
        /// </summary>
        /// <returns></returns>
        public int[] WriteData()
        {
            if (string.IsNullOrWhiteSpace(DataType))
            {
                return WriteData_Null();
            }
            if (DataType.Equals("string", StringComparison.CurrentCultureIgnoreCase))
            {
                return WriteData_string();
            }
            if (DataType.Equals("now", StringComparison.CurrentCultureIgnoreCase))
            {
                return WriteData_now();
            }
            return WriteData_Null();
        }
        private int[] MultiplyData(double[] buff)
        {
            int[] result = new int[buff.Length];
            for (int i = 0; i < buff.Length; i++)
            {
                //result[i] = (int)(buff[i] * this.Multiply);
                result[i] = (int)Math.Round(buff[i] * this.Multiply);
            }
            return result;
        }
        private int[] WriteData_Null()
        {
            double[] buff = new double[1];
            double ivalue = 0;
            if (SetValue != null && SetValue != DBNull.Value
                && double.TryParse(SetValue.ToString(), out ivalue))
            {
                buff[0] = ivalue;
            }
            else
            {
                buff[0] = 0.0;
            }
            return MultiplyData(buff);
        }
        /// <summary>
        /// 把字符串解析为PLC地址块数据
        /// </summary>
        /// <returns></returns>
        private int[] WriteData_string()
        {
            string ss = string.Empty;
            if (SetValue != null && SetValue != DBNull.Value)
            {
                ss = SetValue.ToString();
            }
            byte[] temp = System.Text.Encoding.Default.GetBytes(ss);
            //double[] buff = new double[temp.Length / 2];
            //for (int i = 0; i < buff.Length; i++)
            //{
            //    buff[i] = temp[i * 2] + temp[i * 2 + 1] * 0x100;
            //}
            double[] buff = new double[temp.Length / 2 + temp.Length % 2];
            for (int i = 0; i < buff.Length; i++)
            {
                if (i * 2 + 1 >= temp.Length)
                {
                    buff[i] = temp[i * 2];
                }
                else
                {
                    buff[i] = temp[i * 2] + temp[i * 2 + 1] * 0x100;
                }
            }
            return MultiplyData(buff);
        }
        private int[] WriteData_now()
        {
            string ss = string.Empty;
            if (SetValue != null && SetValue != DBNull.Value)
            {
                ss = SetValue.ToString();
            }
            DateTime dtNow = DateTime.Now;
            if (!DateTime.TryParse(ss, out dtNow))
            {
                dtNow = DateTime.Now;
            }
            double[] buff = new double[] { dtNow.Year, dtNow.Month, dtNow.Day, 
                    dtNow.Hour, dtNow.Minute, dtNow.Second };
            return MultiplyData(buff);
        }
    }
}