using Opc.Ua;
using OpcUaHelper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TeamAAS_VP.Enums;
using TeamAAS_VP.Interfaces;
using TeamAAS_VP.Models;

namespace TeamAAS_VP.Core.PLCs
{
    public class OPCuaClientPLC : IPlc
    {
        public Guid Id{ get; private set; }

        public CommunicationType CommunicationType { get; private set; }

        public string EndpointUrl { get; private set; }

        public string Name { get; private set; }

        public OpcUaClient OpcUaClient { get; private set; }

        public bool IsConnected { get { return OpcUaClient.Connected; } }

        public event Action<object, bool> ConnectChangedEvent;

        public OPCuaClientPLC(Guid id, string name, string endpointUrl, CommunicationType communicationType)
        {
            Id = id;
            Name = name;
            EndpointUrl = endpointUrl;
            CommunicationType = communicationType;
            OpcUaClient = new OpcUaClient();
            // 初始化PLC连接
            OpcUaClient.UserIdentity = new UserIdentity(new AnonymousIdentityToken());
            // connect to server, this is a sample
            try
            {
                OpcUaClient.ConnectComplete += OpcUaClient_ConnectComplete;
                OpcUaClient.ReconnectStarting += OpcUaClient_ReconnectStarting;
                OpcUaClient.ReconnectComplete += OpcUaClient_ReconnectComplete;
                OpcUaClient.OpcStatusChange += OpcUaClient_OpcStatusChange;
            }
            catch (Exception ex)
            {
                return;
            }
        }

        public OPCuaClientPLC(PlcInfo plcInfo)
        {
            Id = plcInfo.Id;
            Name = plcInfo.Name;
            EndpointUrl = plcInfo.EndpointUrl;
            CommunicationType = plcInfo.CommunicationType;
            OpcUaClient = new OpcUaClient();
            // 初始化PLC连接
            OpcUaClient.UserIdentity = new UserIdentity(new AnonymousIdentityToken());
            // connect to server, this is a sample
            try
            {
                OpcUaClient.ConnectComplete += OpcUaClient_ConnectComplete;
                OpcUaClient.ReconnectStarting += OpcUaClient_ReconnectStarting;
                OpcUaClient.ReconnectComplete += OpcUaClient_ReconnectComplete;
                OpcUaClient.OpcStatusChange += OpcUaClient_OpcStatusChange;
            }
            catch (Exception ex)
            {
                return;
            }
        }

        public void Connect()
        {
            OpcUaClient.ConnectServer(EndpointUrl);
        }

        public Task ConnectAsync()
        {
            return OpcUaClient.ConnectServer(EndpointUrl);
        }

        public void Disconnect()
        {
            OpcUaClient.Disconnect();
        }

        public void Dispose()
        {
            OpcUaClient.Disconnect();
            OpcUaClient.ConnectComplete -= OpcUaClient_ConnectComplete;
            OpcUaClient.ReconnectStarting -= OpcUaClient_ReconnectStarting;
            OpcUaClient.ReconnectComplete -= OpcUaClient_ReconnectComplete;
            OpcUaClient.OpcStatusChange -= OpcUaClient_OpcStatusChange;
        }

        #region OPC事件
        private void OpcUaClient_OpcStatusChange(object sender, OpcUaStatusEventArgs e)
        {
            //LogHelper.WriteLogInfo($"OPC状态发生改变：Error：{e.Error},Time：{e.Time},Text：{e.Text}");
        }

        private void OpcUaClient_ReconnectComplete(object sender, EventArgs e)
        {
            ConnectChangedEvent?.Invoke(this, OpcUaClient.Connected);
        }

        private void OpcUaClient_ReconnectStarting(object sender, EventArgs e)
        {
            ConnectChangedEvent?.Invoke(this, OpcUaClient.Connected);
        }

        private void OpcUaClient_ConnectComplete(object sender, EventArgs e)
        {
            ConnectChangedEvent?.Invoke(this, OpcUaClient.Connected);
        }
        #endregion
    }
}