using Deckungsbeitrag.AA_Klassen;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using VirtualKeyboard;

namespace Deckungsbeitrag.AA_Forms
{
  public partial class CustomInputBox : Form
  {
    private QwertzKeyboard keyboard;
    private readonly bool isNumeric;
    private bool isFallback = false;
    private string title;
    private string caption;
    private string todo;
    private string eingabe;
    private string numeric;
    
    public string text;

    private static string Title;
    private static string Caption;
    private static string Todo;
    private static string Eingabe;


    public CustomInputBox(string numeric)
    {
      InitializeComponent();
      ControlBox = false;

      if (numeric == "isNumeric") { this.textBoxText.AccessibleName = "isNumeric"; this.isNumeric = true; }
      if (numeric == "isAlpha") { this.textBoxText.AccessibleName = "isAlpha"; this.isNumeric = false; }
      if (numeric == "isCalc") { this.textBoxText.AccessibleName = "isClac"; this.isNumeric = true; }
    }
    public CustomInputBox(string frage, string title, string eingabe, string numeric) : this(numeric)
    {
      Caption = frage;
      Eingabe = eingabe;
      Title = title;
    }


    /// <summary>
    /// Aufrufen der CustomInputBox. Besser .Show verwenden.
    /// </summary>
    /// <param name="title">Key von BoxTitel</param>
    /// <param name="caption">Key von Message-Text</param>
    /// <param name="todo">Key von ToDo</param>
    /// <param name="eingabe">Hinweis welche Eingabe erwartet wird</param>
    /// <param name="numeric">Eingabeformat für VirtuelKeyboard (isNumeric, isCalc oder isAlpha)</param>
    public CustomInputBox(string title, string caption, string todo, string eingabe, string Numeric) : this(Numeric)
    {
      this.title = title;
      this.caption = caption;
      this.todo = todo;
      this.eingabe = eingabe;
    }



    /// <summary>
    /// Aufrufen der CustomInputBox.
    /// </summary>
    /// <param name="title">Key von BoxTitel</param>
    /// <param name="caption">Key von Message-Text</param>
    /// <param name="todo">Key von ToDo</param>
    /// <param name="eingabe">Hinweis welche Eingabe erwartet wird</param>
    /// <param name="numeric">Eingabeformat für VirtuelKeyboard (isNumeric, isCalc oder isAlpha)</param>
    public static DialogResult Show(string title, string caption, string todo, string eingabe, string numeric)
    {
      CustomInputBox inputBox = new CustomInputBox(title, caption, todo, eingabe, numeric);
      return inputBox.ShowDialog();
    }

    private void CustomInputBox_Load(object sender, EventArgs e)
    {
      GetTranslation(title, caption, todo, eingabe);
      this.buttonOK.Text = TranslationService.T("Button.Ok");
      this.buttonAbbrechen.Text = TranslationService.T("Button.Abbrechen");

      this.Text = Title;
      this.labelFrage.Text = Caption + " ";
      this.labelFrage.Text += !string.IsNullOrWhiteSpace(Todo) ? Todo : string.Empty;
      this.labelEingabe.Text = !string.IsNullOrWhiteSpace(Eingabe) ? Eingabe + ":" : string.Empty;

      if (isNumeric) this.textBoxText.Text = "1";
      else this.textBoxText.Text = string.Empty;
    }

    /// <summary>
    /// Die strings werden aus der translation.json ausgelesen und übersetzt.
    /// </summary>
    /// <param name="title"></param>
    /// <param name="caption"></param>
    /// <param name="todo"></param>
    /// <param name="eingabe"></param>
    private static void GetTranslation(string title, string caption, string todo, string eingabe)
    {
      if (title != null) Title = TranslationService.T(title);
      if (caption != null) Caption = TranslationService.T(caption);
      if (todo != null) Todo = TranslationService.T(todo);
      if (eingabe != null) Eingabe = TranslationService.T(eingabe);
    }

    private void TextBoxText_Click(object sender, EventArgs e)
    {
      TextBox tb = (TextBox)sender;
      tb.Clear();
      keyboard = Funktionen.OpenVirtualKeyboard(sender);
    }
    private void TextBoxText_Enter(object sender, EventArgs e)
    {
      TextBox tb = (TextBox)sender;
      keyboard = Funktionen.OpenVirtualKeyboard(sender);

      this.BeginInvoke(new Action(() =>
      {
        if (!tb.IsDisposed && tb.CanFocus)
        {
          tb.Focus();
          tb.SelectAll();
        }
      }));
    }

    private void ButtonAbbrechen_Click(object sender, EventArgs e)
    {
      if (keyboard != null) keyboard.Close();
      this.DialogResult = DialogResult.Cancel;
      this.Close();
    }

    private void ButtonOK_Click(object sender, EventArgs e)
    {
      if (keyboard != null) keyboard.Close();
      this.DialogResult = DialogResult.OK;
      this.Close();
    }

    private void TextBoxText_Validating(object sender, CancelEventArgs e)
    {
      if (buttonAbbrechen.Focused)
        return;

      if (isNumeric)
      {
        if (int.TryParse(textBoxText.Text, out int value)) this.text = textBoxText.Text;
        else
        {
          CustomMessageBox.Show("Titel.Fehler", "Text.Fehler.NurZahlen", null, new string[] { "Ok" });
          e.Cancel = true;
          this.textBoxText.Clear();
        }
      }
      else
      {
        this.text = textBoxText.Text;
      }
    }



    /// <summary>
    /// Tastendruck wird erkannt und verarbeitet.
    /// </summary>
    /// <param name="keyData"></param>
    /// <returns></returns>
    protected override bool ProcessDialogKey(Keys keyData)
    {
      // Taste T löst Übersetzung in FallbackLanguage aus bzw. setzt die Übersetzung wieder auf CurrentLanguage zurück.
      if (Form.ModifierKeys == Keys.None && keyData == Keys.T)
      {
        if (!isFallback) TranslationService.SetLanguage(TranslationService.FallbackLanguage);
        else TranslationService.SetLanguage(Program._settings.Culture);

        isFallback = !isFallback;
        CustomInputBox_Load(this, null);
        return true;
      }

      return base.ProcessDialogKey(keyData);
    }

  }
}