using JSMachine.WMS.Common;
using JSMachine.WMS.Infrastructure.AppConfiguration;
using JSMachine.WMS.Infrastructure.Helper;
using JSMachine.WMS.PLC.ModbusImpl.Elevator;
using System.Collections.Concurrent;

namespace JSMachine.WMS.PLC.ModbusImpl
{
    /// <summary>
    /// 进程内 PLC 引擎注册表，按提升机编号管理通信实例。
    /// </summary>
    public static class PLCManager
    {
        private static readonly ConcurrentDictionary<int, IModbusEngine> PLC_Dic = new();

        /// <summary>
        /// 添加或替换指定提升机的 PLC 引擎。
        /// </summary>
        /// <param name="elevatorNo">提升机编号。</param>
        /// <param name="modbusEngine">对应的 Modbus 引擎。</param>
        public static void AddPLC(int elevatorNo, IModbusEngine modbusEngine)
        {
            if (PLC_Dic.ContainsKey(elevatorNo))
            {
                PLC_Dic[elevatorNo] = modbusEngine;
            }
            else
            {
                PLC_Dic.TryAdd(elevatorNo, modbusEngine);
            }
        }

        /// <summary>
        /// 获取指定提升机的 PLC 引擎；未注册时记录警告并返回空值。
        /// </summary>
        /// <param name="elevatorNo">提升机编号。</param>
        /// <returns>已注册的通信引擎，未连接时返回空值。</returns>
        public static IModbusEngine GetPLC(int elevatorNo)
        {
            if (!PLC_Dic.ContainsKey(elevatorNo))
            {
                LogHelper.Warn($"{elevatorNo} 号提升机PLC尚未连接");

                //ElevatorConfig elevatorConfig = Global.AppSettings.ElevatorConfig.First(p => p.ElevatorNo == elevatorNo);

                //new ElevatorPlc().Init(elevatorConfig.IP, elevatorConfig.Port);

                return null;

            }

            return PLC_Dic[elevatorNo];
        }
    }
}