using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using Avalonia.Media;
using Project_Periodensystem.Model;
using System;
using System.Collections.Generic;

namespace Project_Periodensystem.View
{
    public partial class LandingPage : UserControl
    {
        private readonly Random random = new();
        private readonly Dictionary<AppTheme, string> themeColors;
        private AppTheme currentTheme;
        private Button? startButton;
        private DateTime lastClickTime = DateTime.MinValue;
        private const int DEBOUNCE_MS = 500;

        public LandingPage()
        {
            Logger.Log($"=== LandingPage wird initialisiert am {DateTime.Now:dd.MM.yyyy HH:mm:ss} ===");
            InitializeComponent();
            
            themeColors = new Dictionary<AppTheme, string>
            {
                { AppTheme.Dark, "#5C5144" },
                { AppTheme.Light, "#E8DFD8" },
                { AppTheme.Classic, "#7B8B6F" }
            };
            
            SetRandomTheme();
            startButton = this.Find<Button>("StartButton");
            
            if (startButton != null)
            {
                Logger.Log("StartButton gefunden und wird initialisiert");
                startButton.Click += StartButton_Click;
                Logger.Log("Click-Handler wurde registriert");
            }
            else
            {
                Logger.Log("FEHLER: StartButton nicht gefunden!");
            }
        }

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

        private void SetRandomTheme()
        {
            var themes = Enum.GetValues<AppTheme>();
            currentTheme = themes[random.Next(themes.Length)];
            this.Background = new SolidColorBrush(Color.Parse(themeColors[currentTheme]));
            Logger.Log($"Theme gewählt: {currentTheme}");
        }

        private void ThemeButton_Click(object? sender, RoutedEventArgs e)
        {
            var themes = Enum.GetValues<AppTheme>();
            currentTheme = themes[(Array.IndexOf(themes, currentTheme) + 1) % themes.Length];
            
            if (this.Parent is ContentControl content && content.Parent is MainWindow mainWindow)
            {
                mainWindow.UpdateTheme(currentTheme);
            }
        }

        private void StartButton_Click(object? sender, RoutedEventArgs e)
        {
            // Stop event propagation
            e.Handled = true;

            var now = DateTime.Now;
            // Prüfe ob genug Zeit seit dem letzten Klick vergangen ist
            if ((now - lastClickTime).TotalMilliseconds < DEBOUNCE_MS)
            {
                Logger.Log("Click ignoriert (Debounce)");
                return;
            }
            lastClickTime = now;

            Logger.Log("StartButton_Click wurde aufgerufen");
            
            try 
            {
                if (this.Parent is ContentControl content && content.Parent is MainWindow mainWindow)
                {
                    mainWindow.ShowPeriodicTable();
                }
            }
            catch (Exception ex)
            {
                Logger.Log($"FEHLER im Click-Handler: {ex.Message}");
            }
        }
    }
}