using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
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;
using System.Windows.Shapes;
using WatchDog.WPF;

namespace YoloV5ImageLableWpfApp
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private static FileSelectedVM _fileSelectedVM = new FileSelectedVM();

        public FileSelected fileSelected = new FileSelected(_fileSelectedVM);
        public MainWindow()
        {
            InitializeComponent();
            this.Closed += MainWindow_Closed;
            //this.image.Source = new ImageSource();

            image.Source = new BitmapImage(new Uri(@"C:\Users\77411\Desktop\images2\进线区_2FA南侧_球机-18-17-57.bmp", UriKind.Absolute));
            this.canvas.MouseEnter += Canvas_MouseEnter;
            this.canvas.MouseMove += Canvas_MouseMove;
            this.canvas.MouseLeftButtonDown += Canvas_MouseLeftButtonDown;
            this.canvas.MouseLeftButtonUp += Canvas_MouseLeftButtonUp;

            this.KeyDown += MainWindow_KeyDown;
        
        }

        private void MainWindow_KeyDown(object sender, KeyEventArgs e)
        {
            if (Keyboard.IsKeyDown(Key.LeftCtrl) &&Keyboard.IsKeyDown(Key.Z) )
            {

                //只要当下同时按下的键中包含LeftCtrl、H和C，就会进入
                canvas.Children.Remove(rct);
                isStarted = false; isComplete = false;
            }
        }

        private void Canvas_MouseEnter(object sender, MouseEventArgs e)
        {
        }

        private void Canvas_MouseMove(object sender, MouseEventArgs e)
        {
            if (isStarted && !isComplete)
            {
                endPoint = e.GetPosition(canvas);
                if (endPoint.X - startPoint.X>0)
                {
                    rct.Width = endPoint.X - startPoint.X;

                }
                else
                {
                    rct.Width =Math.Abs( endPoint.X - startPoint.X);
                    Canvas.SetLeft(rct, endPoint.X);

                }
                if (endPoint.Y - startPoint.Y>0)
                {

                    rct.Height = Math.Abs(endPoint.Y - startPoint.Y);
                }
                else
                {
                    rct.Height = Math.Abs(endPoint.Y - startPoint.Y);
                    Canvas.SetTop(rct, endPoint.Y);
                }
            }
           

        }
        Rectangle rct ;
        Point startPoint;
        Point endPoint;
        bool isComplete = false;
        bool isStarted = false;
        private void Canvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            isComplete = true;
            isStarted = false;
        }

        private void Canvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            isStarted = true;
            startPoint = e.GetPosition(canvas);
            rct = new Rectangle();
            Canvas.SetLeft(rct, startPoint.X);
            Canvas.SetTop(rct, startPoint.Y);
            rct.StrokeThickness = 1;
            rct.Stroke = new SolidColorBrush(Color.FromRgb(255,255,255));
            this.canvas.Children.Add(rct);
        }

        private void MainWindow_Closed(object? sender, EventArgs e)
        {
            System.Environment.Exit(0);
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {

            fileSelected.ShowDialog();

            this.filePath.Text = _fileSelectedVM.CurrentDir;
            var dirInfos = Directory.GetFiles(_fileSelectedVM.CurrentDir);
            this.imageList.Items.Clear();
            foreach (var item in dirInfos)
            {
                Regex reg = new Regex("(bmp|jpg|png|tif|gif|pcx|tga|exif|fpx|svg|psd|cdr|pcd|dxf|ufo|eps|ai|raw|WMF|webp|jpeg)");//这是搜索匹配0-9的数字
                if (reg.IsMatch(item))
                {
                    
                    this.imageList.Items.Add(new MyFile(System.IO.Path.GetFileName(item), item));

                }
            }
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            isComplete = false;


            try
            {
          
                var w = rct.ActualWidth / canvas.ActualWidth;
                var h = rct.ActualWidth / canvas.ActualHeight;
                var x = Canvas.GetLeft(rct) / canvas.ActualWidth + (w/ 2);
                var y = Canvas.GetTop(rct) / canvas.ActualHeight +(h/2);
                using (StreamWriter sw = new StreamWriter(_fileSelectedVM.CurrentDir+ "\\"+System.IO.Path.GetFileNameWithoutExtension( this.filePath.Text)+".txt"))
                {
                    sw.WriteLine($"{this.lableName.Text} {x} {y} {w} {h}");
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

        }

        private void imageList_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            try
            {
                canvas.Children.Remove(rct);

                ListBox listBox = sender as ListBox;
                MyFile myFile = listBox.SelectedItem as MyFile;
                image.Source = new BitmapImage(new Uri(myFile.Path, UriKind.Absolute));

                filePath.Text = myFile.Path;


            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
           
        }
    }
}