using System;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using Avalonia.VisualTree;
using Project_Periodensystem.Model;

namespace Project_Periodensystem.View
{
    public partial class AboutPage : UserControl
    {
        public AboutPage()
        {
            InitializeComponent();
        }

        protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
        {
            base.OnAttachedToVisualTree(e);
            
            if (this.GetVisualRoot() is MainWindow mainWindow)
            {
                mainWindow.UpdateTheme(MainWindow.CurrentTheme);
            }
        }

        private void InitializeComponent()
        {
            AvaloniaXamlLoader.Load(this);
        }

        private void BackButton_Click(object? sender, RoutedEventArgs e)
        {
            if (MainWindow.Instance != null)
            {
                MainWindow.Instance.ShowLandingPage();
            }
        }

        private void ThemeButton_Click(object? sender, RoutedEventArgs e)
        {
            var themes = Enum.GetValues<AppTheme>();
            MainWindow.CurrentTheme = themes[(Array.IndexOf(themes, MainWindow.CurrentTheme) + 1) % themes.Length];
            
            if (MainWindow.Instance != null)
            {
                MainWindow.Instance.UpdateTheme(MainWindow.CurrentTheme);
            }
        }
    }
}