using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;


namespace aiextractor
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        int OriginalXSize { get; set; }
        int OriginalYSize { get; set; }
        double ScaledX { get; set; }
        double ScaledY { get; set; }
        double toCropBeginX { get; set; }
        double toCropBeginY { get; set; }
        double toCropEndX { get; set; }
        double toCropEndY { get; set; }
        Bitmap temp;

        public MainWindow()
        {
            InitializeComponent();
        }

        private void btnLoad_Click(object sender, RoutedEventArgs e)
        {
            OpenFileDialog op = new OpenFileDialog();
            op.Title = "Select a picture";
            op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" +
              "JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" +
              "Portable Network Graphic (*.png)|*.png";
            if (op.ShowDialog() == true)
            {
                imgPhoto.Source = new BitmapImage(new Uri(op.FileName));
                temp = new Bitmap(op.FileName);
                OriginalXSize = ((System.Windows.Media.Imaging.BitmapSource)imgPhoto.Source).PixelWidth;
                OriginalYSize = ((System.Windows.Media.Imaging.BitmapSource)imgPhoto.Source).PixelHeight;
            }

        }

        private void btnSave_Click(object sender, RoutedEventArgs e)
        {



        }

        System.Windows.Point startPos;
        private void ImgPhoto_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            startPos = e.GetPosition(imgPhoto);
        }

        private void ImgPhoto_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            ScaledX = OriginalXSize / imgPhoto.ActualWidth;
            ScaledY = OriginalYSize / imgPhoto.ActualHeight;
            var pos = e.GetPosition(imgPhoto);

            toCropBeginX = pos.X * ScaledX;
            toCropBeginY = pos.Y * ScaledY;

            rect.Margin = new Thickness(startPos.X, startPos.Y, 0, 0);
            rect.HorizontalAlignment = HorizontalAlignment.Left;
            rect.VerticalAlignment = VerticalAlignment.Top;

            var selectedXs = Math.Abs(pos.X - startPos.X);
            var selectedYs = Math.Abs(pos.Y - startPos.Y);

            if (selectedXs > selectedYs)
            {
                rect.Width = selectedXs;
                rect.Height = selectedXs;
            }
            else
            {
                rect.Width = selectedYs;
                rect.Height = selectedYs;
            }

            toCropEndX = rect.Width * ScaledX;
            toCropEndY = rect.Height * ScaledY; // old toCropBeginY + (rect.Width * ScaledY);

            Rectangle destinationRect = new Rectangle((int)toCropBeginX, (int)toCropBeginY, (int)toCropEndX, (int)toCropEndY);
            Bitmap croppedImage = temp.Clone(destinationRect, temp.PixelFormat);
            croppedImage.Save(@"test.png", ImageFormat.Png);


            rect.Fill = new SolidColorBrush(Colors.Red);
            rect.Opacity = 0.25;
        }
    }
}