using System;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using Avalonia.Media;
using Avalonia;
using Avalonia.VisualTree;
using Project_Periodensystem.Persistence;

namespace Project_Periodensystem.View
{
    // Converter to map element series to a color
    public class SeriesToColorConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            // Example: Map series string to color
            if (value == null) return new SolidColorBrush(Colors.Gray);
            switch (value.ToString())
            {
                case "Alkali Metal":
                    return new SolidColorBrush(Colors.OrangeRed);
                case "Alkaline Earth Metal":
                    return new SolidColorBrush(Colors.Gold);
                case "Transition Metal":
                    return new SolidColorBrush(Colors.LightBlue);
                case "Metalloid":
                    return new SolidColorBrush(Colors.LightGreen);
                case "Nonmetal":
                    return new SolidColorBrush(Colors.LightGray);
                case "Halogen":
                    return new SolidColorBrush(Colors.Violet);
                case "Noble Gas":
                    return new SolidColorBrush(Colors.Cyan);
                default:
                    return new SolidColorBrush(Colors.Gray);
            }
        }
    }

    public partial class PeriodicTablePage : UserControl
    {
        private readonly Grid periodicGrid;

        public PeriodicTablePage()
        {
            InitializeComponent();
            periodicGrid = this.Find<Grid>("PeriodicGrid") ?? throw new Exception("PeriodicGrid not found");
            InitializePeriodicTable();
        }

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

        private void InitializePeriodicTable()
        {
            try
            {
                Logger.Log("Initialisiere PeriodicTable...");
                foreach (var element in PeriodicTableData.Elements)
                {
                    var border = new Border
                    {
                        Width = 58,
                        Height = 58,
                        Margin = new Thickness(1),
                        CornerRadius = new CornerRadius(4),
                        BorderThickness = new Thickness(1),
                        BorderBrush = new SolidColorBrush(Colors.Gray)
                    };

                    var stackPanel = new StackPanel();
                    
                    // Symbol
                    stackPanel.Children.Add(new TextBlock
                    {
                        Text = element.Symbol,
                        FontSize = 20,
                        Foreground = new SolidColorBrush(Colors.White),
                        HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Center
                    });

                    // Atomic Number
                    stackPanel.Children.Add(new TextBlock
                    {
                        Text = element.AtomicNumber.ToString(),
                        FontSize = 12,
                        Foreground = new SolidColorBrush(Colors.White),
                        HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Center
                    });

                    border.Child = stackPanel;

                    // Set background color based on element series
                    var converter = new SeriesToColorConverter();
                    border.Background = converter.Convert(element.Series, typeof(IBrush), null!, System.Globalization.CultureInfo.CurrentCulture) as IBrush;

                    // Position the element - adjust for 0-based indexing
                    Grid.SetRow(border, Math.Max(0, element.Row - 1));
                    Grid.SetColumn(border, Math.Max(0, element.Column - 1));
                    
                    periodicGrid.Children.Add(border);
                }
                Logger.Log("PeriodicTable wurde initialisiert");
            }
            catch (Exception ex)
            {
                var mainWindow = this.FindAncestorOfType<MainWindow>();
                if (mainWindow != null)
                {
                    Logger.Log("MainWindow gefunden, navigiere zu About...");
                    mainWindow.ShowAbout();
                }
                else
                {
                    Logger.Log("FEHLER: MainWindow nicht gefunden!");
                }
                Logger.Log($"FEHLER im PeriodicTable-Initialisierer: {ex.Message}");
            }
        }

        private void AboutButton_Click(object? sender, RoutedEventArgs e)
        {
            try
            {
                Logger.Log("AboutButton wurde geklickt");
                var mainWindow = this.FindAncestorOfType<MainWindow>();
                if (mainWindow != null)
                {
                    Logger.Log("Navigation zu About Page");
                    mainWindow.ShowAbout();
                }
                else
                {
                    Logger.Log("FEHLER: MainWindow nicht gefunden");
                }
            }
            catch (Exception ex)
            {
                Logger.Log($"FEHLER im AboutButton_Click: {ex.Message}");
            }
        }
    }
}