using RJCP.IO.Ports;
using SHJX.Service.Common.ReadXML;
using SHJX.Service.ServerClient.RS485;
using SHJX.Service.Common.Logging;
using Microsoft.Extensions.Logging;
namespace SHJX.Service.ServerClient
{
    public sealed class ClientPort
    {
        private readonly bool _isAuto;
        private readonly string _port;
        private static readonly ILogger logger = LogFactory.BuildLogger(typeof(ClientPort));
        public ClientPort( ReadConfigUtil config)
        {
            _port = config.Port;
            _isAuto = config.IsAutoGetPort;
        }

        /// <summary>
        /// 打开连接
        /// </summary>
        /// <returns></returns>
        public (string, bool) OpenClient()
        {
            Rs485Client.InitPort();
            if (Rs485Client.IsValid)
            {
                return (Rs485Client.Sport.PortName, Rs485Client.IsValid);
            }
            if (_isAuto)
            {
                var portStr = FindMoonsMotor();
                if (string.IsNullOrWhiteSpace(portStr))
                {
                    return ("NULL", false);
                }
                Rs485Client.Open(portStr);
            }
            else
            {
                Rs485Client.Open(_port);
            }
            return (Rs485Client.Sport.PortName, Rs485Client.IsValid);
        }

        /// <summary>
        /// 遍历所有COM口，查找鸣志电机通信口.
        /// </summary>
        /// <param name="addr">电机RS485地址号</param>
        /// <returns>找到的端口名，否则为string.Empty</returns>
        private string FindMoonsMotor(char addr = '1')
        {
            
            var portName = string.Empty; // 记录找到的端口
            foreach (var comport in SerialPortStream.GetPortNames())
            {
                Rs485Client.Open(comport);
                if (!Rs485Client.IsValid) continue;
                var strCmd = $"{addr}SC\r";
                var strRes = Rs485Client.SendData(strCmd, '\r');
                Rs485Client.Close();
                if (string.IsNullOrEmpty(strRes) || !strRes.Contains("SC="))
                    continue;
                portName = comport;// OK，找到端口
                break;
            }
            return portName;
        }
    }
}