using System;
using System.Text;
using System.Windows;
using System.Windows.Threading;

namespace eDosStation
{
    /// <summary>
    /// Interaction logic for ShowEPDDose.xaml
    /// </summary>
    public partial class ShowEPDDose : Window
    {
        private enum eEntryState { none, getepd, epdtimeout, epdError, epdOK, final };
#pragma warning disable CS0414 // The field 'ShowEPDDose.EntryState' is assigned but its value is never used
        private eEntryState EntryState;
#pragma warning restore CS0414 // The field 'ShowEPDDose.EntryState' is assigned but its value is never used

        Station thisStation;
        EpdBaseClr.Epd2 ep;
        DispatcherTimer dispatcherTimer;
        private DateTime ResultTime;
        private User thisUser;
#pragma warning disable CS0414 // The field 'ShowEPDDose.EpdReading' is assigned but its value is never used
        private bool EpdReading;
#pragma warning restore CS0414 // The field 'ShowEPDDose.EpdReading' is assigned but its value is never used
        private bool FinalTimeOut;

        public ShowEPDDose(Station curStation)
        {
            InitializeComponent();
            thisStation = curStation;
            EpdReading = false;
            FinalTimeOut = false;
            EntryState = eEntryState.none;
        }

        private void CountDown(object sender, EventArgs e)
        {
            double v = (ResultTime - DateTime.Now).TotalSeconds;
            if (v > Progress.Minimum)
            {
                Progress.Value = v;
                ProgressText.Text = ((int)v).ToString();
            }
            else
            {
                SetTimedOutAndEnd();
            }
        }

        #region EPD Callback
        private void Ep_EpdTO(EpdBaseClr.Epd2 Sender, EpdBaseClr.EpdTOEventArgs e)
        {
            System.Diagnostics.Debug.WriteLine("TIME OUT");
            Dispatcher.InvokeAsync(() => { SetTimedOutAndEnd(); });
        }

        private void Ep_EpdError(EpdBaseClr.Epd2 Sender, EpdBaseClr.EpdErrorEventArgs e)
        {
            System.Diagnostics.Debug.WriteLine("ERROR ");
            Dispatcher.InvokeAsync(() =>
            {
                MessageBox.Show($"EPD Error {e.returnValue} {e.ErrorRV} {e.ErrorStep}");
                Dispatcher.InvokeAsync(() => { SetTimedOutAndEnd(); });
            });
        }

        private void Ep_EpdRead(EpdBaseClr.Epd2 Sender, EpdBaseClr.EpdEventArgs e)
        {
            EpdReading = false;
            dispatcherTimer?.Stop();
            Dispatcher.InvokeAsync(() => LoadDoses());
        }
        private void Ep_EpdProgress(EpdBaseClr.Epd2 Sender, EpdSteps step, EpdStepResults result)
        {
            System.Diagnostics.Debug.WriteLine($"EPD Progress step:{step} result:{result}");
            int index = -1;
            switch (step)
            {
                case EpdSteps.StepDiscovering: index = 0; break;
                case EpdSteps.StepReadStatus: index = 1; break;
                case EpdSteps.StepDeIssue: index = 2; break;
            }
            if (index >= 0 && index < stepEPD.Items.Count)
            {
                this.Dispatcher.InvokeAsync(new Action(() => stepEPD.SelectedIndex = 1), DispatcherPriority.Render);
            }
        }

        #endregion

        private void LoadDoses()
        {
            int rv = 0;
            if (ep == null) return;
            rv = ep.GetAll(true);
            if (rv != 0) MessageBox.Show("Communication  error");

            isIssued.Text = ep.EPDIssued ? "Yes" : "no";
            string sPersID = ep.WearerName.Trim();
            Wearer.Text = sPersID;
            EpdVisit.Text = ep.WearerID.ToString();

            HardVersion.Text = ep.HardVersion.ToString() + '.' + ep.HardVersionMinor.ToString(); // ep.SoftVersion.ToString();

            if (ep.eDoshasAlarm)
            {
                hasAlarm.Text = "Yes";
            }
            else
                hasAlarm.Text = "No";

            epdid.Text = ep.EpdID.ToString();
            var stype = new StringBuilder();
            if (ep.isMK3) stype.Append("MK3 "); else stype.Append("MK2 ");
            if (ep.isBG) stype.Append(" BG"); else stype.Append(" NG");
            epdtype.Text = stype.ToString();

            Decoder.AlarmToTextBox(sAlarm, ep);

            HpDose07l.Text = ep.Hp07Name;
            HpDose10l.Text = ep.Hp10Name;

            HpDose07.Text = $"{ep.Hp07:0.00} µSv";
            HpDose10.Text = $"{ep.Hp10:0.00} µSv";

            HP10AlarmDose1l.Text = "Warning " + ep.Hp10Name;
            HP10AlarmDose2l.Text = "Alarm " + ep.Hp10Name;
            HP07AlarmDosel.Text = "Alarm " + ep.Hp07Name;

            HP10AlarmDose1.Text = $"{ep.Hp10THDose1:0.00} µSv";
            HP10AlarmDose2.Text = $"{ep.Hp10THDose2:0.00} µSv";
            HP07AlarmDose.Text = $"{ep.Hp07THDose:0.00} µSv";

            HpPeak07l.Text = ep.Hp07Name + " Peak";
            HpPeak07.Text = $"{ep.Hp07Peak:0.00} µSv {ep.Hp07PeakTime:yyyy-MM-dd HH:mm} ";

            HpPeak10l.Text = ep.Hp10Name + " Peak";
            HpPeak10.Text = $"{ep.Hp10Peak:0.00} µSv {ep.Hp10PeakTime:yyyy-MM-dd HH:mm} ";

            if (ep.isNG)
            {
                lNGain.Visibility = NGain.Visibility = Visibility.Visible;
                NGain.Text = ep.NGgain.ToString("#.##");
            }
            else
            {
                lNGain.Visibility = NGain.Visibility = Visibility.Hidden;
            }

            if (!string.IsNullOrEmpty(sPersID))
            {
                try
                {
                    thisUser = thisStation.dataInterface.GetUser(string.Empty, sPersID, false);
                    epdUserMargin.Text = thisUser.Margin.ToString();
                }
                catch
                {
                }
            }
            else
                epdUserMargin.Text = "--";

            Progress.Visibility = Visibility.Collapsed;
            bEpdCancel.IsEnabled = true;
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            FinalTimeOut = false;
            EpdReading = false;

            ep = new EpdBaseClr.Epd2(thisStation.ComPort, thisStation.OnlyMK2);
            ep.SetFeedbackSound(thisStation.useBeep, thisStation.useBeepMK3());
            ep.EpdRead += Ep_EpdRead;
            ep.EpdError += Ep_EpdError;
            ep.EpdTO += Ep_EpdTO;
            ep.EpdProgress += Ep_EpdProgress;

            dispatcherTimer = new DispatcherTimer(DispatcherPriority.Background);
            dispatcherTimer.Interval = thisStation.ScreenProgressBarInterval;
            dispatcherTimer.Tick += CountDown;
            ResultTime = DateTime.Now.AddSeconds(thisStation.ScreenEPDTimeout);
            Progress.Value = Progress.Maximum = thisStation.ScreenEPDTimeout;
            dispatcherTimer.Start();
            startEPDRead();

            //dispatcherTimer = new DispatcherTimer(DispatcherPriority.Normal);
            //dispatcherTimer.Interval = TimeSpan.FromMilliseconds(thisStation.EPDTimeOut / 10);
            //Progress.Maximum = Progress.Value = dispatcherTimer.Interval.TotalSeconds * 10;
            //dispatcherTimer.Tick += CountDown;
            //Dispatcher.InvokeAsync(() => ep.Wait(thisStation.EPDTimeOut, 1),DispatcherPriority.Background);
            //dispatcherTimer.Start();
        }




        private void startEPDRead()
        {
            EpdReading = true; bEpdCancel.IsEnabled = false;
            Dispatcher.InvokeAsync(new Action(() => { ep.Wait(thisStation.EPDTimeOut, thisStation.EPDRetries); }), DispatcherPriority.Background);
        }

        private void SetTimedOutAndEnd()
        {
            if (!FinalTimeOut)
            {
                bEpdCancel.IsEnabled = true;
                FinalTimeOut = true;
                dispatcherTimer?.Stop();
                Progress.Value = 0;
                Progress.Background = System.Windows.Media.Brushes.Red;
                statusEPD.Content = "Time out";
                tWaitFor.Text = "Lezer niet gevonden !";
                dispatcherTimer = new DispatcherTimer(DispatcherPriority.Background);
                dispatcherTimer.Tick += ShowAndEnd;
                dispatcherTimer.Interval = thisStation.ShowTimeoutTime;
                dispatcherTimer.Start();
            }
        }

        private void ShowAndEnd(object sender, EventArgs e)
        {
            dispatcherTimer?.Stop();
            dispatcherTimer = null;
            endPage();
        }

        private void endPage()
        {
            this.Close();
        }


        private void RadButton_Click(object sender, RoutedEventArgs e)
        {
            endPage();
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            dispatcherTimer?.Stop();
            dispatcherTimer = null;
            EpdReading = true;
            try
            {
                if (ep != null)
                {
                    ep.WaitEnd();
                    ep.Dispose();
                    ep = null;
                }
            }
            catch (System.Exception ex)
            {
                System.Diagnostics.Debug.WriteLine(ex.Message);
            }
        }


        private void DosimeterView_CloseClicked(object sender, RoutedEventArgs e)
        {
            this.Close();
        }
    }
}