using System;
using System.Text;
using System.Windows.Forms;
using ZJ_BYD.Untils;

namespace ZJ_BYD.Common
{
    public class PlcHelper
    {
        /// <summary>
        /// 获取PLC值
        /// </summary>
        /// <param name="dataType"></param>
        /// <param name="address"></param>
        /// <param name="length"></param>
        /// <returns></returns>
        public static (bool ok, string val) GetPlcVal(string dataType, string address, string length = "1")
        {
            var strVal = string.Empty;
            try
            {

                switch (dataType)
                {
                    case "bool":
                        if (Program.siemensS7Net == null)
                        {
                            Program.communicationstatus = "异常";
                            return (false, strVal);
                        }
                        else
                        {
                            var operateBoolResult = Program.siemensS7Net.ReadBool(address);
                            if (!operateBoolResult.IsSuccess)
                            {
                                return (false, strVal);
                            }
                            else
                            {
                                var boolVal = operateBoolResult.Content;
                                strVal = boolVal.ToString();
                                return (true, strVal);
                            }
                        }
                    case "short":
                        if (Program.siemensS7Net == null)
                        {
                            Program.communicationstatus = "异常";
                            return (false, strVal);
                        }
                        else
                        {
                            var operateShortResult = Program.siemensS7Net.ReadInt16(address);
                            if (!operateShortResult.IsSuccess)
                            {
                                return (false, strVal);
                            }
                            else
                            {
                                var shortVal = operateShortResult.Content;
                                strVal = shortVal.ToString();
                                return (true, strVal);
                            }
                        }
                    case "ushort":
                        if (Program.siemensS7Net == null)
                        {
                            Program.communicationstatus = "异常";
                            return (false, strVal);
                        }
                        else
                        {
                            var operateShortResult = Program.siemensS7Net.ReadUInt16(address);
                            if (!operateShortResult.IsSuccess)
                            {
                                return (false, strVal);
                            }
                            else
                            {
                                var shortVal = operateShortResult.Content;
                                strVal = shortVal.ToString();
                                return (true, strVal);
                            }
                        }
                    case "float":
                        if (Program.siemensS7Net == null)
                        {
                            Program.communicationstatus = "异常";
                            return (false, strVal);
                        }
                        else
                        {
                            var operateFloatResult = Program.siemensS7Net.ReadFloat(address);
                            if (!operateFloatResult.IsSuccess)
                            {
                                return (false, strVal);
                            }
                            else
                            {
                                var floatVal = operateFloatResult.Content;
                                strVal = floatVal.ToString("f3");
                                return (true, strVal);
                            }
                        }
                    case "string":
                        if (Program.siemensS7Net == null)
                        {
                            Program.communicationstatus = "异常";
                            return (false, strVal);
                        }
                        else
                        {
                            var operateFloatResult = Program.siemensS7Net.ReadString(address, ushort.Parse(length), Encoding.UTF8);
                            if (!operateFloatResult.IsSuccess)
                            {
                                return (false, strVal);
                            }
                            else
                            {
                                strVal = operateFloatResult.Content;
                                return (true, strVal);
                            }
                        }
                    default:
                        LogHelper.WriteLog("未知数据类型！");
                        return (false, strVal);
                }
            }
            catch (Exception ex)
            {
                var errMsg = ex == null ? "未知异常" : ex.Message;
                MessageBox.Show($"GetPlcVal方法出发异常:{errMsg}，请联系管理员！");
                return (false, strVal);
            }
        }
    }
}