using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using Avalonia.Media;
using Project_Periodensystem.Model;  // ElementModel should be here
using Project_Periodensystem.Persistence;
using Project_Periodensystem.View.Converters;
using System;
using System.Globalization;
using System.Linq;

namespace Project_Periodensystem.View
{
    public partial class PeriodicTablePage : UserControl
    {
        private readonly Grid? periodicGrid;

        public PeriodicTablePage()
        {
            InitializeComponent();
            periodicGrid = this.Find<Grid>("PeriodicGrid");
            InitializePeriodicTable();
        }

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

        private void InitializePeriodicTable()
        {
            try
            {
                Logger.Log("Initialisiere PeriodicTable...");
                
                // Prüfen ob das Grid gefunden wurde
                if (periodicGrid == null)
                {
                    Logger.Log("FEHLER: PeriodicGrid nicht gefunden!");
                    return;
                }

                // Prüfen ob Elemente vorhanden sind
                if (PeriodicTableData.Elements == null || !PeriodicTableData.Elements.Any())
                {
                    Logger.Log("FEHLER: Keine Elemente in PeriodicTableData!");
                    return;
                }

                // Debug: Alle Elemente ausgeben
                Logger.Log($"Anzahl Elemente: {PeriodicTableData.Elements.Count()}");
                var firstFew = PeriodicTableData.Elements.Take(5);
                foreach (var el in firstFew)
                {
                    Logger.Log($"Element: {el.Symbol} - Row: {el.Row}, Column: {el.Column}");
                }
                
                // Speziell nach H und He suchen
                var hydrogen = PeriodicTableData.Elements.FirstOrDefault(e => e.Symbol == "H");
                var helium = PeriodicTableData.Elements.FirstOrDefault(e => e.Symbol == "He");
                
                if (hydrogen != null)
                    Logger.Log($"Wasserstoff gefunden: Row {hydrogen.Row}, Column {hydrogen.Column}");
                else
                    Logger.Log("Wasserstoff NICHT gefunden!");
                    
                if (helium != null)
                    Logger.Log($"Helium gefunden: Row {helium.Row}, Column {helium.Column}");
                else
                    Logger.Log("Helium NICHT gefunden!");

                // Elemente hinzufügen
                foreach (var element in PeriodicTableData.Elements)
                {
                    Logger.Log($"Füge Element hinzu: {element.Symbol} ({element.Row},{element.Column})");
                    CreateElementButton(element);
                }

                Logger.Log("PeriodicTable wurde initialisiert");
            }
            catch (Exception ex)
            {
                Logger.Log($"FEHLER beim Initialisieren des PeriodicTable: {ex.Message}");
                Logger.Log($"StackTrace: {ex.StackTrace}");
            }
        }

        private void CreateElementButton(Element element)
        {
            var button = new Button { Classes = { "ElementTile" } };
            var panel = new StackPanel();

            // Set background color based on element series
            var backgroundColor = new SeriesToColorConverter().Convert(element.Series, typeof(Brush), null, CultureInfo.InvariantCulture) as Brush;
            if (backgroundColor != null)
            {
                button.Background = backgroundColor;
            }

            var symbolText = new TextBlock 
            { 
                Text = element.Symbol,
                Classes = { "Symbol" },
                Foreground = new SolidColorBrush(Colors.White),
                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Center
            };
            
            var numberText = new TextBlock 
            { 
                Text = element.AtomicNumber.ToString(),
                Classes = { "Number" },
                Foreground = new SolidColorBrush(Colors.White),
                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Center
            };
            
            panel.Children.Add(numberText);  // Number on top
            panel.Children.Add(symbolText);  // Symbol below
            button.Content = panel;

            // FIX: Korrekte Grid-Positionierung ohne Math.Max für Spalten!
            int gridRow = element.Row;     // Row direkt verwenden (0-basiert)
            int gridColumn = element.Column; // Column direkt verwenden (0-basiert)
            
            Logger.Log($"Element {element.Symbol}: Original({element.Row},{element.Column}) -> Grid({gridRow},{gridColumn})");
            
            Grid.SetRow(button, gridRow);
            Grid.SetColumn(button, gridColumn);
            
            if (periodicGrid != null)
            {
                periodicGrid.Children.Add(button);
                Logger.Log($"Element {element.Symbol} wurde zum Grid hinzugefügt an Position ({gridRow},{gridColumn})");
            }
        }

        private void ThemeButton_Click(object? sender, RoutedEventArgs e)
        {
            var nextTheme = MainWindow.CurrentTheme switch
            {
                AppTheme.Dark => AppTheme.Light,
                AppTheme.Light => AppTheme.Classic,
                _ => AppTheme.Dark
            };

            if (this.Parent is ContentControl content && content.Parent is MainWindow mainWindow)
            {
                mainWindow.UpdateTheme(nextTheme);
            }
        }

        private void AboutButton_Click(object? sender, RoutedEventArgs e)
        {
            if (this.Parent is ContentControl content && content.Parent is MainWindow mainWindow)
            {
                mainWindow.ShowAboutPage();
            }
        }
    }
}