using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using VDash.Overlay.Actions;

namespace VDash.UI.ActionEditors
{
    /// <summary>
    /// Interaction logic for ResizeWindowActionEditor.xaml
    /// </summary>
    public partial class ResizeWindowActionEditor : UserControl,IActionEditor
    { 
        public event EventHandler Submitted;
        public ResizeWindowAction Action { get; private set; }

        public static object[] Presets = 
        {
            "Optional Presets...",
            new ResizePreset("Small (640x480)", 640, 480),
            new ResizePreset("Medium (1024x768)", 1024, 768),
            new ResizePreset("Large (1400x1050)", 1400, 1050)
        };

        public ResizeWindowActionEditor(ResizeWindowAction action)
        {
            InitializeComponent();
            Action = action;
            DataContext = Action;
            cbPresets.ItemsSource = Presets;
        }

        private void TextBlock_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            foreach (var letter in e.Text)
            {
                if (!Char.IsNumber(letter))
                {
                    e.Handled = true;
                    return;
                }
            }
        }

        private void TextBlock_PreviewKeyDown(object sender, KeyEventArgs e)
        {
            if(e.Key == Key.Space)
            {
                e.Handled = true;
                return;
            }
        }

        private void btnOK_Click(object sender, RoutedEventArgs e)
        {
            if(Action.NewWidth <= 50 || Action.NewHeight == 50)
            {
                MessageBox.Show("Please enter a valid width and height.", "Input error", MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }
            Submitted?.Invoke(this, null);
        }

        private void cbPresets_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            //Skip description
            if(cbPresets.SelectedItem.GetType() != typeof(ResizePreset))
            {
                return;
            }

            var item = (ResizePreset)cbPresets.SelectedItem;

            Action.NewWidth = item.Width;
            Action.NewHeight = item.Height;
            tbWidth.GetBindingExpression(TextBox.TextProperty).UpdateTarget();
            tbHeight.GetBindingExpression(TextBox.TextProperty).UpdateTarget();
        }

        internal class ResizePreset
        {
            public string Description { get; private set; }
            public int Width { get; private set; }
            public int Height { get; private set; }

            public ResizePreset(string description, int width, int height)
            {
                Description = description;
                Width = width;
                Height = height;
            }
            public override string ToString()
            {
                return Description;
            }
        }
    }
}