using System;
using System.Collections.Generic;
using System.Threading;
using Step.Model.DTOModels;
using TeamDev.SDK.MVVM;
using Step.NC;
using Step.Core;
using static Step.Utils.Constants;
using static Step.Utils.ExceptionManager;
using static CMS_CORE.Nc;

public static class ThreadsFunctions
{
    public static bool reconnectionIsRunning = false;

    public static void ReadAlarmsAsync()
    {
        NcHandler ncHandler = new NcHandler();
        try
        {
            ncHandler.Connect();

            while (true)
            {
                if (ncHandler.numericalControl.NC_IsConnected())
                {
                    // Get Alarms from NC
                    CmsError libraryError = ncHandler.GetNcAlarms(out DTOAlarmsModel alarms);
                    if (libraryError.errorCode != 0)
                        ManageLibraryError(libraryError);
                    // Send through signalR
                    MessageServices.Current.Publish(SEND_ALARMS, null, alarms);
                }
                Thread.Sleep(200);
            }
        }
        catch (ThreadAbortException ex)
        {
            ncHandler.Dispose();
        }
    }

    public static void ReadNcGenericInfo()
    {
        NcHandler ncHandler = new NcHandler();
        try
        {
            CmsError libraryError = ncHandler.Connect();
            if (libraryError.errorCode != 0)
                ManageLibraryError(libraryError);

            while (true)
            {

                if (ncHandler.numericalControl.NC_IsConnected())
                {
                    // Get Generic data from NC
                    libraryError = ncHandler.GetNcGenericData(out DTONcGenericDataModel genericData);
                    if (libraryError.errorCode != 0)
                        ManageLibraryError(libraryError);
                    else
                        // Send through signalR
                        MessageServices.Current.Publish(SEND_GENERIC_DATA, null, genericData);
                }
                Thread.Sleep(1000);
            }
        }
        catch (ThreadAbortException ex)
        {
            ncHandler.Dispose();
        }
    }

    public static void ReadAxes()
    {
        NcHandler ncHandler = new NcHandler();
        try
        {
            CmsError libraryError = ncHandler.Connect();
            if (libraryError.errorCode != 0)
                ManageLibraryError(libraryError);

            while (true)
            {

                if (ncHandler.numericalControl.NC_IsConnected())
                {
                    // Get the list of the axes
                    libraryError = ncHandler.GetAxesPositions(out List<DTOAxesModel> genericData);
                    if (libraryError.errorCode != 0)
                        ManageLibraryError(libraryError);
                    // Send through signalR
                    MessageServices.Current.Publish(SEND_AXES, null, genericData);
                }
                Thread.Sleep(200);
            }
        }
        catch (ThreadAbortException ex)
        {
            ncHandler.Dispose();
        }
    }

    private static void WillReconnect()
    {
        // Stop all the NC threads
        ThreadsHandler.Stop();
        NcHandler ncHandler = new NcHandler();

        // Run loop until NC is connected
        while (!ncHandler.numericalControl.NC_IsConnected())
        {
            // Try reconnection
            CmsError cmsError = ncHandler.Connect();
            if (cmsError.errorCode == CMS_ERROR_CODES.SIEMENS_ENVIRONMENT_NOT_FOUND || cmsError.errorCode == CMS_ERROR_CODES.SIEMENS_HMI_NOT_RUNNING)
            {
                ManageLibraryError(cmsError);
            }
            else if ( cmsError.errorCode != CMS_ERROR_CODES.OK)
                ncHandler.Dispose();

            Thread.Sleep(1000);
            
            // Send status to UI
            MessageServices.Current.Publish(NC_STATUS, null, ncHandler.numericalControl.NC_IsConnected());
        }
        // Start/Restart NC threads
        ThreadsHandler.StartWorkers();

        reconnectionIsRunning = false;
    }

    public static void TryNcConnection()
    {
        if (reconnectionIsRunning == false)
        {   // Set thread as running state
            reconnectionIsRunning = true;

            // Start reconnection thread
            Thread t = new Thread(() =>
                        WillReconnect()
            );

            t.Start();
        }
    }

    public static void ManageLibraryError(CmsError cmsError)
    {
        switch (cmsError.errorCode)
        {
            case CMS_ERROR_CODES.NC_PROD_ERROR:
                TryNcConnection();
                break;
            case CMS_ERROR_CODES.NOT_CONNECTED:
                TryNcConnection(); // If not connected try reconnection
                break;
            case CMS_ERROR_CODES.PROC_NOT_FOUND:
                break;
            case CMS_ERROR_CODES.FUNCTION_NOT_ALLOWED:
                break;
            case CMS_ERROR_CODES.BIT_NOT_IN_RANGE:
                break;
            case CMS_ERROR_CODES.BYTE_NOT_IN_RANGE:
                break;
            case CMS_ERROR_CODES.INTERNAL_ERROR:
                break;
            case CMS_ERROR_CODES.INCORRECT_PARAMETERS:
                break;
            case CMS_ERROR_CODES.NC_LANGUAGE_ERROR:
                break;
            case CMS_ERROR_CODES.SIEMENS_ENVIRONMENT_NOT_FOUND:
            case CMS_ERROR_CODES.SIEMENS_HMI_NOT_RUNNING:
                Manage(ERROR_LEVEL.FATAL, cmsError.message);
                break;
        }
    }
}