using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Media;

namespace WPFDark.StandardControls
{
    public class PasswordBoxHelper
    {
        public static readonly DependencyProperty IsPasswordVisibleProperty =
            DependencyProperty.RegisterAttached(
            "IsPasswordVisible",
            typeof(bool),
            typeof(PasswordBoxHelper),
            new PropertyMetadata(false, OnIsPasswordVisibleChanged));

        public static bool GetIsPasswordVisible(DependencyObject obj)
        { return (bool)obj.GetValue(IsPasswordVisibleProperty); }

        public static void SetIsPasswordVisible(DependencyObject obj, bool value)
        { obj.SetValue(IsPasswordVisibleProperty, value); }
        private static object? OriginContent { get; set; }
        //TODO
        private static void OnIsPasswordVisibleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if(d is PasswordBox passwordBox)
            {
                bool isVisible = (bool)e.NewValue;

                if(isVisible)
                {
                    // 创建一个TextBox来显示密码
                    var textBox = new TextBox
                    {
                        Text = passwordBox.Password,
                        FontSize= passwordBox.FontSize,
                        FontFamily = passwordBox.FontFamily,
                        FontWeight = passwordBox.FontWeight,
                        FontStyle = passwordBox.FontStyle,
                        HorizontalContentAlignment = passwordBox.HorizontalContentAlignment,
                        VerticalContentAlignment = passwordBox.VerticalContentAlignment,
                        Padding = passwordBox.Padding,
                        Margin = passwordBox.Margin,
                        BorderThickness = passwordBox.BorderThickness,
                        BorderBrush = passwordBox.BorderBrush,
                        Background = passwordBox.Background,
                        Foreground = passwordBox.Foreground
                    };

                    // 将TextBox的Text和PasswordBox的Password进行双向绑定
                    textBox.TextChanged += (s, args) =>
                    {
                        if(s is TextBox tb)
                        {
                            passwordBox.Password = tb.Text;
                        }
                    };

                    // 替换ContentHost的内容
                    if(passwordBox.Template.FindName("PART_ContentHost", passwordBox) is ScrollViewer scrollViewer)
                    {
                        OriginContent = scrollViewer.Content; // 保存原始内容
                        scrollViewer.Content = textBox;
                    }
                }
                else
                {
                    // 还原到PasswordBox的默认状态
                    if(passwordBox.Template.FindName("PART_ContentHost", passwordBox) is ScrollViewer scrollViewer)
                    {
                        string currentPassword = passwordBox.Password;
                        if(currentPassword != null)
                        {
                            scrollViewer.Content = OriginContent; // 清除TextBox
                            passwordBox.Password = currentPassword; // 保持密码不变
                        }
                    }
                }
            }
        }
    }
}