using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AwInitilizer.Procedure.FourGenModuleCheck
{
    public enum ErrorType
    {
        None,
        ConnectFail,
        VersionReadFail,
        VersionMismatch,
        SimStatusReadFail,
        SimStatusMismatch,
        IccidMistach,
        ImsiMistach,
    }

    public enum LogEvent
    {
        FourgenSocketConnect,
        FourgenModuleVersion,
        SimStatus,
        SimICCID,
        SimIMSI
    }

    public class FourGenModuleCheckProcedure : ProcedureBase
    {
        public ErrorType Error { get; set; } = ErrorType.None;

        private ProcedureLog.LogWriter<FourGenModuleCheckProcedure, LogEvent> LogWriter;

        private readonly static Dictionary<LogEvent, string> ReportDict = new Dictionary<LogEvent, string>()
        {
            { LogEvent.FourgenSocketConnect, "FourgenSocketConnect" },
            { LogEvent.FourgenModuleVersion, "FourgenModuleVersion" },
            { LogEvent.SimStatus, "SimStatus" },
            { LogEvent.SimICCID, "SimICCID" },
            { LogEvent.SimIMSI, "SimIMSI" },
        };

        private readonly static Dictionary<LogEvent, string> LogDict = new Dictionary<LogEvent, string>()
        {
            { LogEvent.FourgenSocketConnect, "EVSE connect {0}" },
            { LogEvent.FourgenModuleVersion, "Read 4G Module version : {0}" },
            { LogEvent.SimStatus, "Get sim instert status {0}" },
            { LogEvent.SimICCID, "Get Sim ICCID : {0}" },
            { LogEvent.SimIMSI, "Get Sim IMSI : {0}" },
        };

        public FourGenModuleCheckProcedure() : base()
        {
            Name = "4G Check";
            Content = "Check 4G module version and SIM card information matches user input";

            LogWriter = new ProcedureLog.LogWriter<FourGenModuleCheckProcedure, LogEvent>(this)
            {
                ReportPair = ReportDict,
                LogPair = LogDict
            };
        }

        internal override async Task<bool> Run()
        {
            if (!UpdateData.SystemID.ModelName.Network.ToString().Contains("4G"))
            {
                //if does not support 4G then end init
                LogWriter.Log("4G not supported, skip procedure");

                return true;
            }

            //Logger.Print("Connecting to EVSE");
            if (!await base.CheckAndCreateSocket())
            {
                LogWriter.Report(LogEvent.FourgenSocketConnect,"fail");
                Error = ErrorType.ConnectFail;

                return false;
            }
            LogWriter.Report(LogEvent.FourgenSocketConnect, "success");

            var fourthGenModuleVersion = await serialPortocol.GetFourGenModuleVersion();
            LogWriter.Report(LogEvent.FourgenModuleVersion, fourthGenModuleVersion);
            
            if (string.IsNullOrEmpty(fourthGenModuleVersion))
            {
                Error = ErrorType.VersionReadFail;
                LogWriter.Log("4G module version read error");

                return false;
            }
            else
            {
                LogWriter.Log(string.Format("Read 4G Module version : {0} , Expect:{1}", fourthGenModuleVersion, UpdateData.FourGenModuleVersion));

                if (!fourthGenModuleVersion.ToLower().StartsWith(UpdateData.FourGenModuleVersion.ToLower()))
                {
                    Error = ErrorType.VersionMismatch;

                    return false;
                }
            }

            var simstatus = await serialPortocol.GetSimStatus();

            if(simstatus == null)
            {
                LogWriter.Report(LogEvent.SimStatus, "unknown");
            }
            else if(simstatus.IsInstalled)
            {
                LogWriter.Report(LogEvent.SimStatus, "inserted");
            }
            else
            {
                LogWriter.Report(LogEvent.SimStatus, "none");
            }

            if (simstatus == null)
            {
                Error = ErrorType.SimStatusReadFail;

                return false;
            }
            else
            {
                LogWriter.Log(string.Format("Get Sim Status : {0} , Expect:{1}", simstatus.IsInstalled ? "installed" : "uninstalled", UpdateData.IsSimInsert ? "installed" : "uninstalled"));

                if (simstatus.IsInstalled != UpdateData.IsSimInsert)
                {
                    Error = ErrorType.SimStatusMismatch;

                    return false;
                }
                else
                {
                    if (simstatus.IsInstalled)
                    {
                        var iccidByteList = simstatus.ICCID.ToList();
                        iccidByteList.RemoveAll(x => x == 0x00);
                        var iccidBytes = iccidByteList.ToArray();

                        var imsiByteList = simstatus.IMSI.ToList();
                        imsiByteList.RemoveAll(x => x == 0x00);
                        var imsiBytes = imsiByteList.ToArray();


                        var ICCIDstring = Encoding.ASCII.GetString(iccidBytes).Trim();
                        var IMSIstring = Encoding.ASCII.GetString(imsiBytes).Trim();

                        LogWriter.Report(LogEvent.SimICCID, ICCIDstring);
                        LogWriter.Report(LogEvent.SimIMSI, IMSIstring);

                        LogWriter.Log(string.Format("Get Sim ICCID : {0} , Expect:{1}", ICCIDstring, UpdateData.ICCID));
                        LogWriter.Log(string.Format("Get Sim IMSI : {0} , Expect:{1}", IMSIstring, UpdateData.IMSI));

                        if (ICCIDstring != UpdateData.ICCID)
                        {
                            LogWriter.Log("Sim card ICCID not match");
                            Error = ErrorType.IccidMistach;

                            return false;
                        }

                        if (IMSIstring != UpdateData.IMSI)
                        {
                            LogWriter.Log("Sim card IMSI not match");
                            Error = ErrorType.ImsiMistach;

                            return false;
                        }
                    }
                    else
                    {
                    }
                }
            }

            return true;
        }
    }
}