using System;
using System.Threading;
using MECF.Framework.Simulator.Core.Driver;

namespace EfemDualSimulator.Devices
{
    class EdwardsPumpMockPMA : SerialPortDeviceSimulator
    {
        public enum SimEdwardsPumpStatus
        {
            Open,
            Close,
            OnLine,
            OffLine,
        }

        public static SimEdwardsPumpStatus _simPumpStatus;
        public static SimEdwardsPumpStatus _simPumpControlStatus;
        private const string EOF = "\r";
        private const char MSG_DELIMITER = ' ';
        private const string MOCKUP_PORT = "COM31";

        public EdwardsPumpMockPMA(string com) : base(com, -1, EOF, MSG_DELIMITER)
        {
            _simPumpStatus = SimEdwardsPumpStatus.Close;
            _simPumpControlStatus = SimEdwardsPumpStatus.OffLine;
        }

        protected override void ProcessUnsplitMessage(string message)
        {
            if (string.IsNullOrEmpty(message))
                throw new ArgumentException("Hardware command message is invalid");

            string[] strs = message.Split('\r');

            string sRes = string.Empty;

            foreach (var s2 in strs)
            {
                if (s2.Length < 1) continue;

                switch (s2)
                {
                    case "/":
                        strs = null;
                        sRes = string.Empty;
                        break;
                    case "!C1":
                        _simPumpControlStatus = SimEdwardsPumpStatus.OnLine;
                        sRes = "ERR 0" + "\r\n";
                        break;
                    case "!C0":
                        _simPumpControlStatus = SimEdwardsPumpStatus.OffLine;
                        sRes = "ERR 0" + "\r\n";
                        break;
                    case "!P1":
                        if(_simPumpControlStatus == SimEdwardsPumpStatus.OnLine)
                        {
                            _simPumpStatus = SimEdwardsPumpStatus.Open;
                            sRes = "ERR 0" + "\r\n";
                        }
                        else
                        {
                            sRes = "ERR 5" + "\r\n";
                        }
                        break;
                    case "!P2":
                        if (_simPumpControlStatus == SimEdwardsPumpStatus.OnLine)
                        {
                            _simPumpStatus = SimEdwardsPumpStatus.Close;
                            sRes = "ERR 0" + "\r\n";
                        }
                        else
                        {
                            sRes = "ERR 5" + "\r\n";
                        }
                        break;
                    case "?P":
                        if (_simPumpStatus == SimEdwardsPumpStatus.Open)
                            sRes = "4" + "\r\n";
                        else if (_simPumpStatus == SimEdwardsPumpStatus.Close)
                            sRes = "0" + "\r\n";
                        else
                            sRes = "0" + "\r\n";
                        break;
                    case "?C":
                        if (_simPumpControlStatus == SimEdwardsPumpStatus.OffLine)
                            sRes = "0" + "\r\n";
                        else if (_simPumpControlStatus == SimEdwardsPumpStatus.OnLine)
                            sRes = "1" + "\r\n";
                        else
                            sRes = "0" + "\r\n";
                        break;
                    default:
                        break;
                }

                OnWriteMessage(sRes);
            }
        }
    }
}