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.Shapes;
using static DyeingComputer.KEY.TouchKeyboardNumeral;

namespace DyeingComputer.KEY
{
    /// <summary>
    /// TouchKeyboard.xaml 的交互逻辑
    /// </summary>
    public partial class TouchKeyboard : Window
    {
        private bool isShiftActive = false;
        public string KeyValue;
        public event EventHandler<KeyPressedEventArgs> KeyPressed;

        public TouchKeyboard()
        {
            InitializeComponent();
        }

        private void KeyButton_Click(object sender, RoutedEventArgs e)
        {
            Button button = sender as Button;
            if (button != null)
            {
                string key = button.Content.ToString();

                if (key.Length == 1 && char.IsLetter(key[0]))
                {
                    key = isShiftActive ? key.ToUpper() : key.ToLower();
                }

                PreviewTextBox.Text += key;

                // 输入后关闭Shift状态
                if (isShiftActive)
                {
                    isShiftActive = false;
                    UpdateButtonAppearance();
                }
            }
        }

        private void Shift_Click(object sender, RoutedEventArgs e)
        {
            isShiftActive = !isShiftActive;
            UpdateButtonAppearance();
        }      

        private void Backspace_Click(object sender, RoutedEventArgs e)
        {
            if (!string.IsNullOrEmpty(PreviewTextBox.Text))
            {
                PreviewTextBox.Text = PreviewTextBox.Text.Substring(0, PreviewTextBox.Text.Length - 1);
            }
        }

        private void Enter_Click(object sender, RoutedEventArgs e)
        {
            // 触发回车事件
            KeyPressed?.Invoke(this, new KeyPressedEventArgs(KeyType.Enter, PreviewTextBox.Text));

            this.Close();
           // PreviewTextBox.Text += Environment.NewLine;
        }

        private void Hide_Click(object sender, RoutedEventArgs e)
        {
            KeyPressed?.Invoke(this, new KeyPressedEventArgs(KeyType.Hide, ""));
            this.Close();
        }

        private void UpdateButtonAppearance()
        {
            // 更新Shift按钮的外观以反映当前状态
            if (isShiftActive)
            {
                ShiftButton.Background = new SolidColorBrush(Colors.LightBlue);
            }
            else
            {
                ShiftButton.Background = new SolidColorBrush(Color.FromRgb(224, 224, 224));
            }
        }

        public class KeyPressedEventArgs : EventArgs
        {
            public KeyType KeyType { get; }
            public string KeyValue { get; }

            public KeyPressedEventArgs(KeyType keyType, string keyValue)
            {
                KeyType = keyType;
                KeyValue = keyValue;
            }
        }
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            // 初始化为默认模式
            //   SetKeyboardMode(KeyboardMode.Default);
            PreviewTextBox.Text = null;
        }
    }
   
}