using Microsoft.Win32;
using System.IO;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using WinForms = System.Windows.Forms;

namespace dealer
{
    public partial class AddVehicleWindow : Window
    {
        public string? SelectedPhotoPath { get; private set; }
        public System.Windows.Media.Color SelectedColor { get; private set; } = Colors.White;

        private DataManager dataManager;

        public AddVehicleWindow(DataManager dataManager)
        {
            InitializeComponent();

            this.dataManager = dataManager;
        }

        private void SelectPhotoButton_Click(object sender, RoutedEventArgs e)
        {
            Microsoft.Win32.OpenFileDialog openFileDialog = new Microsoft.Win32.OpenFileDialog
            {
                Title = "Vyberte fotografii vozidla",
                Filter = "Obrazky|*.jpg;*.jpeg;*.png;*.bmp;*.gif|Vsechny soubory|*.*",
                FilterIndex = 1
            };

            if (openFileDialog.ShowDialog() == true)
            {
                SelectedPhotoPath = openFileDialog.FileName;
                PhotoPathTextBlock.Text = SelectedPhotoPath;
            }
        }

        private void SelectColorButton_Click(object sender, RoutedEventArgs e)
        {
            WinForms.ColorDialog colorDialog = new WinForms.ColorDialog
            {
                AllowFullOpen = true,
                FullOpen = true
            };

            if (colorDialog.ShowDialog() == WinForms.DialogResult.OK)
            {
                SelectedColor = System.Windows.Media.Color.FromArgb(
                    colorDialog.Color.A,
                    colorDialog.Color.R,
                    colorDialog.Color.G,
                    colorDialog.Color.B);
                
                ColorPreviewBorder.Background = new SolidColorBrush(SelectedColor);
                ColorNameTextBlock.Text = $"#{SelectedColor.R:X2}{SelectedColor.G:X2}{SelectedColor.B:X2}";
                ColorNameTextBlock.FontStyle = FontStyles.Normal;
                ColorNameTextBlock.Foreground = System.Windows.Media.Brushes.Black;
            }
        }

        private void NumericOnly_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            e.Handled = !int.TryParse(e.Text, out _);
        }

        private void DecimalOnly_PreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            var textBox = sender as System.Windows.Controls.TextBox;
            string newText = textBox?.Text.Insert(textBox.SelectionStart, e.Text) ?? e.Text;
            e.Handled = !decimal.TryParse(newText, out _);
        }

        private void SaveButton_Click(object sender, RoutedEventArgs e)
        {
            string? base64Image = null;
            if (!string.IsNullOrEmpty(SelectedPhotoPath) && File.Exists(SelectedPhotoPath))
            {
                byte[] imageBytes = File.ReadAllBytes(SelectedPhotoPath);
                base64Image = Convert.ToBase64String(imageBytes);
            }

            var vehicle = new Vehicle
            {
                Spz = SpzTextBox.Text,
                Model = ModelTextBox.Text,
                Barva = $"#{SelectedColor.R:X2}{SelectedColor.G:X2}{SelectedColor.B:X2}",
                RokVyroby = int.TryParse(YearTextBox.Text, out int rok) ? rok : (int?)null,
                NajeteKm = int.TryParse(MileageTextBox.Text, out int km) ? km : (int?)null,
                Cena = decimal.TryParse(PriceTextBox.Text, out decimal cena) ? cena : (decimal?)null,
                Fotografie = base64Image
            };

            this.dataManager.AddVehicle(vehicle);
            this.dataManager.Save();

            this.Close();
        }

        private void CancelButton_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
        }
    }
}