using NX_CommonClassLibrary;
using NX_LogClassLibrary;
using NX_ModelClassLibrary.CustomEnum;
using NX_ModelClassLibrary.CustomEvent;
using NX_ModelClassLibrary.OpcModel;
using OPCAutomation;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace NX_OpcClassLibrary
{
    /// <summary>
    /// 先导智能OPC初始化和OPCItem变量初始化 
    /// Copyright20181102 (C) sunyalong
    /// 允许修改、添加满足自己项目的需要。
    /// 添加、修改后请详细注释。违者会强制删除不予采用。
    /// </summary>
    public class LeadOpcOperate
    {

        #region 单例模式
        /// <summary>
        /// 单例模式对象
        /// </summary>
        private static LeadOpcOperate _instance = null;
        private static readonly object lockObj = new object();
        /// <summary>
        /// 单例模式方法
        /// </summary>
        public static LeadOpcOperate Instance
        {
            get
            {
                if (_instance == null)
                {
                    lock (lockObj)
                    {
                        if (_instance == null)
                        {
                            _instance = new LeadOpcOperate();
                        }
                    }
                }
                return _instance;
            }
        }
        #endregion

        #region OPCItem变量申明区(所有的OPCItem变量均放于此区域)
        /// <summary>
        /// OPC操作类对象
        /// </summary>
        private readonly LeadOPCServer OPC = new LeadOPCServer();
        /// <summary>
        /// OPC实体类对象集合
        /// </summary>
        public List<WcsOpcItemExtMd> listOpcItem = new List<WcsOpcItemExtMd>();
        /// <summary>
        /// 日志显示帮助类对象
        /// </summary>
        public ShowLogToFrmHelper showLogToFrm = new ShowLogToFrmHelper();
        /// <summary>
        /// 日志头部
        /// </summary>
        private readonly string LogHeadText = "OPC业务操作类 ==>> ";
        #endregion

        #region OPC初始化
        /// <summary>
        /// 初始化OPC服务器和OPCItem变量
        /// </summary>
        /// <param name="dt">OPC数据库配置表</param>
        /// <returns></returns>
        public bool OpcInit(List<WcsOpcItemMd> wcsOpcItemMdLst)
        {
            try
            {
                //枚举本地OPC服务器，
                //如果是西门子的OPC服务器一般用OPC.SimaticNET.1;
                //如果是KEPServerEx的服务器一般用KEPware.KEPServerEx.V4;
                List<string> Opclist = OPC.GetLocalServer();
                string OPCServerName = "KEPware.KEPServerEx.V4";
                foreach (string tempOpc in Opclist)
                {
                    if (tempOpc == OPCServerName)
                    {
                        if (OPC.ConnectRemoteServer("", tempOpc))
                        {
                            if (!OPC.CreateGroup())
                            {
                                return false;
                            }
                            else
                            {
                                //从数据库配置表查询OPC名称、地址等信息并进行配置。
                                int a = 1;
                                foreach (WcsOpcItemMd md in wcsOpcItemMdLst)
                                {
                                    WcsOpcItemExtMd opcItem = SetChildPropertiesToParent(md);
                                    OPCItem opcitem = OPC.OPCItems.AddItem(md.OpcItemPos, a);
                                    opcItem.opc_item = opcitem;
                                    listOpcItem.Add(opcItem);
                                    a++;
                                }
                            }
                        }
                    }
                }
                ShowLogToForm($"初始化OPC变量操作类成功！", true, LogTypeEnum.Run);
                return true;
            }
            catch (Exception ex)
            {
                ShowLogToForm($"初始化OPC变量操作类发生异常：【{ex.Message}】", true, LogTypeEnum.Err);
                return false;
            }
        }
        #endregion

        #region 父类属性值赋值到子类属性
        private WcsOpcItemExtMd SetChildPropertiesToParent(WcsOpcItemMd wcsOpcItemMd)
        {
            WcsOpcItemExtMd opc = new WcsOpcItemExtMd();
            var ParentType = typeof(WcsOpcItemMd);
            var Properties = ParentType.GetProperties();
            foreach (var Propertie in Properties)
            {
                if (Propertie.CanRead && Propertie.CanWrite)
                {
                    Propertie.SetValue(opc, Propertie.GetValue(wcsOpcItemMd, null), null);
                }
            }
            return opc;
        } 
        #endregion

        #region OPC 读、写
        /// <summary>
        /// 读取OPC变量值
        /// </summary>
        /// <param name="wcsOpcItemMd">opc变量对象</param>
        /// <returns></returns>
        public object ReadOpcItemValue(WcsOpcItemMd wcsOpcItemMd)
        {
            WcsOpcItemExtMd opc = listOpcItem.FirstOrDefault(x => x.OpcItemCode == wcsOpcItemMd.OpcItemCode && x.OpcGroupCode == wcsOpcItemMd.OpcGroupCode && x.PlcCode == wcsOpcItemMd.PlcCode && x.DevCode == wcsOpcItemMd.DevCode);
            if (opc == null)
            {
                return null;
            }
            else
            { 
                return opc.opc_item.Value;
            }
        }
        /// <summary>
        /// 写入OPC变量值
        /// </summary>
        /// <param name="wcsOpcItemMd">opc变量对象</param>
        /// <param name="value">写入值</param>
        /// <returns></returns>
        public bool WriteOpcItemValue(WcsOpcItemMd wcsOpcItemMd, object value)
        {
            try
            {
                WcsOpcItemExtMd opc = listOpcItem.FirstOrDefault(x => x.OpcItemCode == wcsOpcItemMd.OpcItemCode && x.OpcGroupCode == wcsOpcItemMd.OpcGroupCode && x.PlcCode == wcsOpcItemMd.PlcCode && x.DevCode == wcsOpcItemMd.DevCode);
                if (opc == null)
                {
                    return false;
                }
                else
                {
                    opc.opc_item.Write(value);
                    return true;
                }
            }
            catch 
            {
                return false;
            }
        }
        #endregion

        #region 桌面显示Log、记录log到文本
        /// <summary>
        /// 桌面显示Log、记录log到文本
        /// </summary>
        /// <param name="msg">log内容</param>
        /// <param name="isShowFormFlag">是否输出到桌面日志端。true：输出桌面；false：只记录文本</param>
        /// <param name="logTypeEnum">日志类型枚举</param>
        private void ShowLogToForm(string msg, bool isShowFormFlag, LogTypeEnum logTypeEnum)
        {
            if (isShowFormFlag)
            {
                showLogToFrm.ShowLog(new ShowLogToFrmEventArgs(msg));
            }
            LogHelper.WriteLog(LogHeadText + msg, logTypeEnum);
        }
        #endregion
    }
}