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
{
    /// <summary>
    /// Code-Behind für die About-Seite
    /// </summary>
    public partial class AboutPage : UserControl
    {
        /// <summary>
        /// Konstruktor
        /// </summary>
        public AboutPage()
        {
            InitializeComponent();
        }

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

        /// <summary>
        /// Zurück-Button - Navigation zur Landing Page
        /// </summary>
        private void BackButton_Click(object? sender, RoutedEventArgs e)
        {
            try
            {
                var mainWindow = TopLevel.GetTopLevel(this) as Window;
                if (mainWindow != null)
                {
                    var landingPage = new LandingPage();
                    mainWindow.Content = landingPage;
                    Logger.Log("Navigation zurück zur Landing Page");
                }
            }
            catch (System.Exception ex)
            {
                Logger.Log($"Fehler bei Navigation zurück: {ex.Message}");
            }
        }

        /// <summary>
        /// Event-Handler für Theme-Button - VEREINHEITLICHT mit anderen Seiten
        /// </summary>
        private void ThemeButton_Click(object? sender, RoutedEventArgs e)
        {
            try
            {
                // GLEICHE LOGIK wie auf LandingPage und PeriodicTablePage
                var app = Application.Current;
                if (app != null)
                {
                    var currentTheme = app.ActualThemeVariant;
                    app.RequestedThemeVariant = currentTheme == Avalonia.Styling.ThemeVariant.Dark 
                        ? Avalonia.Styling.ThemeVariant.Light 
                        : Avalonia.Styling.ThemeVariant.Dark;
                    
                    Logger.Log($"Theme gewechselt zu: {app.RequestedThemeVariant}");
                }
            }
            catch (Exception ex)
            {
                Logger.Log($"Fehler beim Theme-Wechsel: {ex.Message}");
            }
        }
    }
}