using MConnectSDK;
using System;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace TestClient
{
  public partial class MainForm : Form
  {
    private CancellationTokenSource _cts;


    private readonly SynchronizationContext synchronizationContext;
    private DateTime previousTime = DateTime.Now;

    protected MConnectClient MCC;
    /// <summary>
    /// Risposta BASE della classe di comunicazione
    /// </summary>
    protected requestStatus reqStatus;
    protected bool doingAuth;

    public MainForm()
    {
      InitializeComponent();
      myInit();
      synchronizationContext = SynchronizationContext.Current;
    }

    protected void myInit()
    {
      var clockTask = updateClockAsync();
      fixDisplay();
      lblConsole.Text = "";
    }

    private void fixDisplay()
    {
      // controllo se visualizzare parametri di testing...
      bool showTP = chkTestMode.Checked;
      //chkCloudOk.Visible = showTP;
    }

    private async Task updateClockAsync()
    {
      await Task.Run(() =>
      {
        while (true)
        {
          Thread.Sleep(50);
          UpdateUI();
        }
      });
    }

    public void UpdateUI()
    {
      var timeNow = DateTime.Now;

      if ((DateTime.Now - previousTime).Milliseconds <= 250)
      {
        return;
      }

      synchronizationContext.Post(new SendOrPostCallback(o =>
      {
        lblClock.Text = timeNow.ToString("ddd dd.MM.yyyy HH:mm:ss");
      }), "");

      previousTime = timeNow;
    }
    /// <summary>
    /// Reset parametri...
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void btnResetParam_Click(object sender, EventArgs e)
    {
      txtMConnectID.Text = "MCID-0000-1234-5678";
      txtClientID.Text = "HMI_TEST_CLI";
      chkTestMode.Checked = true;
      txtConnParam.Text = "127.0.0.1,abortConnect=false,ssl=false";
      fixDisplay();
    }

    /// <summary>
    /// Simulazione INIT
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private async void btnInit_Click(object sender, EventArgs e)
    {
      confParam param = new confParam
      {
        redisConn = txtConnParam.Text,
        redisConnAdmin = txtConnParam.Text + ",allowAdmin=true",
        testMode = chkTestMode.Checked
      };
      // salvo NON In auth...
      doingAuth = false;

      // init in modalità Task based...
      await Task.Run(() =>
            {
              var initObj = doInitAsync(param);
            });

      // aggiorno log console                      
      StringBuilder sb = new StringBuilder();
      sb.AppendLine("--------------------------------------------------");
      sb.AppendLine(string.Format("{0:HH.mm.ss.fff} | START INIT", DateTime.Now));
      sb.AppendLine("");
      lblConsole.Text = sb.ToString();
    }

    private async Task doInitAsync(confParam param)
    {
      await Task.Run(() =>
      {
        MCC = new MConnectClient(txtMConnectID.Text.Trim(), txtClientID.Text.Trim(), param);
        reqStatus = MCC.init();

        synchronizationContext.Post(new SendOrPostCallback(o =>
        {
          refreshRequestStatus();
        }), "");
      });
    }

    public void refreshRequestStatus()
    {
      // mostro risultato
      StringBuilder sb = new StringBuilder();
      sb.AppendLine("-------------------------");
      sb.AppendLine("- Request Status");
      sb.AppendLine("-------------------------");
      sb.AppendLine("isHmiEnrolled: " + reqStatus.isHmiEnrolled);
      sb.AppendLine("cloudConnection: " + reqStatus.cloudConnection);
      sb.AppendLine("localConnection: " + reqStatus.localConnection);
      sb.AppendLine("callSuccess: " + reqStatus.callSuccess);
      sb.AppendLine("-------------------------");
      lblReqStatus.Text = sb.ToString();
      sb.AppendLine("");
      sb.AppendLine(string.Format("{0:HH.mm.ss.fff} | END", DateTime.Now));
      sb.AppendLine("--------------------------------------------------");
      lblConsole.Text += sb.ToString();

      // se NON enrolled --> abilita tryAuth...
      btnTryAuth.Enabled = !reqStatus.isHmiEnrolled;
    }

    /// <summary>
    /// Simulazione auth (SE non abilitato)
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private async void btnTryAuth_Click(object sender, EventArgs e)
    {
      // salvo NON In auth...
      doingAuth = true;
      // init in modalità Task based...
      await Task.Run(() =>
      {
        var initObj = doOAuthCycle();
      });

      // aggiorno log console                      
      StringBuilder sb = new StringBuilder();
      sb.AppendLine("--------------------------------------------------");
      sb.AppendLine(string.Format("{0:HH.mm.ss.fff} | START OAuth process", DateTime.Now));
      sb.AppendLine("");
      lblConsole.Text = sb.ToString();
    }

    private async Task doOAuthCycle()
    {
      // fino a quanod NON è auth --> cicla...
      while (!reqStatus.isHmiEnrolled && doingAuth)
      {
        await Task.Run(() =>
        {
          synchronizationContext.Post(new SendOrPostCallback(o =>
          {
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("--------------------------------------------------");
            sb.AppendLine(string.Format("{0:HH.mm.ss.fff} | Try OAuth process", DateTime.Now));
            sb.AppendLine("");
            lblConsole.Text = sb.ToString();
          }), "");

          reqStatus = MCC.init();
          userAuthData authData = MCC.tryAuthorize();

          synchronizationContext.Post(new SendOrPostCallback(o =>
          {
            refreshRequestStatus();
            // mostro i dati SPECIFICI x AUTH...
            updateAuthData(authData);
          }), "");
          if (reqStatus.isHmiEnrolled)
          {
            doingAuth = false;
          }
          else
          {
            Thread.Sleep(1000);
          }
        });
      }
    }
    /// <summary>
    /// Mostra info x USER AUTH
    /// </summary>
    /// <param name="authData"></param>
    private void updateAuthData(userAuthData authData)
    {
      StringBuilder sb = new StringBuilder();
      //sb.AppendLine("--------------------------------------------------");
      sb.AppendLine("user_code:");
      sb.AppendLine(authData.userCode.ToString());
      sb.AppendLine("");
      lblRetData.Text = sb.ToString();
      // mostro QR-code
      Zen.Barcode.CodeQrBarcodeDraw qrcode = Zen.Barcode.BarcodeDrawFactory.CodeQr;
      pictBox.Image = qrcode.Draw(authData.qrCode, 50);
    }

    private void chkCloudOk_Click(object sender, EventArgs e)
    {

    }

    private void chkLocalOk_Click(object sender, EventArgs e)
    {

    }

    private void chkEnrolled_Click(object sender, EventArgs e)
    {

    }

    private void chkTestMode_Click(object sender, EventArgs e)
    {
      fixDisplay();
    }

  }
}