using ComeCapture.Controls;
using ComeCapture.Helpers;
using ComeCapture.Models;

using Common.system;

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Threading;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;

using XHWK.WKTool;

using static XHWK.WKTool.MainWindow;

namespace ComeCapture
{
    /// <summary>
    ///     截图 MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class JieTuWindow
    {
        public static double ScreenWidth = SystemParameters.PrimaryScreenWidth;
        public static double ScreenHeight = SystemParameters.PrimaryScreenHeight;
        public static double ScreenScale = 1;
        public static int MinSize = 10;
        internal double pwidth = SystemParameters.PrimaryScreenWidth;

        internal double pHeight = SystemParameters.PrimaryScreenHeight;

        //画图注册名称集合
        public List<NameAndLimit> list = new List<NameAndLimit>();

        //画图注册名称
        public int num = 1;

        //是否截图开始
        private bool _isMouseDown;

        //是否截图完毕
        private bool _isCapture;

        private double _x0;
        private double _y0;

        /// <summary>
        ///     键盘钩子
        /// </summary>
        private readonly KeyboardHookCommon _kHook;

        //private IntPtr BitmapPtr = IntPtr.Zero;
        //private IntPtr JieTuBitmapPtr = IntPtr.Zero;
        /// <summary>
        ///     截图
        /// </summary>
        public JieTuWindow()
        {
            _current = this;
            InitializeComponent();
            _kHook = new KeyboardHookCommon();
            _kHook.KeyDownEvent += K_hook_KeyDownEvent;
            DataContext = new AppModel();
            Initialization();
            Screenshot();
            MaxWindow();
            MaskLeft.Height = ScreenHeight;
            MaskRight.Height = ScreenHeight;
            //计算Windows项目缩放比例
            ScreenHelper.ResetScreenScale();
            //RemoveControl();
            //AllowsTransparency = "True"
        }

        public void Screenshot()
        {
            string tempPath = AppDomain.CurrentDomain.BaseDirectory + "temp\\";
            if (!Directory.Exists(tempPath))
            {
                Directory.CreateDirectory(tempPath);
            }
            if (ImageHelper.GetScreenshot(
                    new Rectangle(
                        0,
                        0,
                        0,
                        0
                    ),
                    null,
                    true,
                    out BitmapImage bitmap
                ))
            {
                Background = new ImageBrush(bitmap);
            }
        }

        public void Initialization()
        {
            Background = null;
            _isMouseDown = false;
            _isCapture = false;
            ImageEditBar.Current.Visibility = Visibility.Collapsed;
            SizeColorBar.Current.Visibility = Visibility.Collapsed;
            SizeRgb.Visibility = Visibility.Collapsed;
            MainImage.Visibility = Visibility.Collapsed;
            DataContext = new AppModel();
            WpfHelper.MainDispatcher = Dispatcher;
        }

        /// <summary>
        ///     初始化快捷键
        /// </summary>
        public void InitializeKeyDownEvent()
        {
            _kHook.Start(); //安装键盘钩子
        }

        /// <summary>
        ///     快捷键
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void K_hook_KeyDownEvent(object sender, System.Windows.Forms.KeyEventArgs e)
        {
            if (e.KeyValue == (int)System.Windows.Forms.Keys.Escape)
            {
                _kHook.Stop();
                Current.OnCancel();
                App.W_XHMicroLessonSystemWindow.InitializeKeyDownEvent();
                App.W_XHMicroLessonSystemWindow.WindowType();
                Hide();
            }
        }

        #region 属性 Current

        private static JieTuWindow _current;

        public static JieTuWindow Current => _current;

        #endregion 属性 Current

        #region 全屏+置顶

        private void MaxWindow()
        {
            Left = 0;
            Top = 0;
            Width = ScreenWidth;
            Height = ScreenHeight;
            Activate();
        }

        #endregion 全屏+置顶

        #region 注册画图

        public static void Register(object control)
        {
            string name = "Draw" + _current.num;
            _current.MainCanvas.RegisterName(name, control);
            _current.list.Add(new NameAndLimit(name));
            _current.num++;
        }

        #endregion 注册画图

        #region 截图区域添加画图

        public static void AddControl(UIElement e)
        {
            _current.MainCanvas.Children.Add(e);
        }

        #endregion 截图区域添加画图

        #region 截图区域撤回画图

        public static void RemoveControl(UIElement e)
        {
            _current.MainCanvas.Children.Remove(e);
        }

        #endregion 截图区域撤回画图

        #region 撤销

        public void OnRevoke()
        {
            if (list.Count > 0)
            {
                string name = list[list.Count - 1].Name;
                object obj = MainCanvas.FindName(name);
                if (obj != null)
                {
                    MainCanvas.Children.Remove(obj as UIElement);
                    MainCanvas.UnregisterName(name);
                    list.RemoveAt(list.Count - 1);
                    MainImage.Limit = list.Count == 0 ? new Limit() : list[list.Count - 1].Limit;
                }
            }
        }

        #endregion 撤销

        #region 保存

        public void OnSave()
        {
            //var sfd = new Microsoft.Win32.SaveFileDialog
            //{
            //    FileName = "截图" + DateTime.Now.ToString("yyyyMMddhhmmss"),
            //    Filter = "png|*.png",
            //    AddExtension = true,
            //    RestoreDirectory = true
            //};
            //if (sfd.ShowDialog() == true)
            //{
            //    Hidden();
            //    Thread t = new Thread(new ThreadStart(() =>
            //    {
            //        Thread.Sleep(200);
            //        WpfHelper.SafeRun(() =>
            //        {
            //            var source = GetCapture();
            //            if (source != null)
            //            {
            //                ImageHelper.SaveToPng(source, sfd.FileName);
            //                Shared.TeachingData.FilePath = sfd.FileName;
            //                //Thread.Sleep(200);
            //            }
            //            Close();
            //            if (ChangeTextEvent != null)
            //            {
            //                ChangeTextEvent("关闭窗口");
            //            }
            //            //Go(sfd.FileName);
            //        });
            //    }))
            //    {
            //        IsBackground = true
            //    };
            //    t.Start();
            //}
        }

        #endregion 保存

        //定义事件
        public event ChangeTextHandler ChangeTextEvent;

        #region 获取截图

        private void GetCapture()
        {
            string time = GetTimeStamp();
            string tempPath = AppDomain.CurrentDomain.BaseDirectory + "Temp\\";
            if (!Directory.Exists(tempPath))
            {
                Directory.CreateDirectory(tempPath);
            }
            App.ImgPath = string.Empty;
            string imagePath = Path.Combine(tempPath, time + ".jpg");
            App.ImgPath = imagePath;
            //LogHelper.Loginfo.Info(imagePath);
            //this.Close();
            //string imagePath = ImageHelper.GetImagePath(out string serverSavePath);

            //BitmapSource bitmap = ImageHelper.GetBitmapSource((int)AppModel.Current.MaskLeftWidth + 1, (int)AppModel.Current.MaskTopHeight + 1, (int)MainImage.ActualWidth - 2, (int)MainImage.ActualHeight - 2, out JieTuBitmapPtr);
            /* BitmapImage bitmap = */
            ImageHelper.GetScreenshot(
                new Rectangle(
                    (int)AppModel.Current.MaskLeftWidth + 1,
                    (int)AppModel.Current.MaskTopHeight + 1,
                    (int)MainImage.ActualWidth - 2,
                    (int)MainImage.ActualHeight - 2
                ),
                imagePath,
                true,
                out BitmapImage _
            );
            _isMouseDown = false;
            _isCapture = false;
            ImageEditBar.Current.Visibility = Visibility.Collapsed;
            SizeColorBar.Current.Visibility = Visibility.Collapsed;
            SizeRgb.Visibility = Visibility.Collapsed;
            MainImage.Visibility = Visibility.Collapsed;
            DataContext = new AppModel();
            WpfHelper.MainDispatcher = Dispatcher;
            MaxWindow();
            MaskLeft.Height = ScreenHeight;
            MaskRight.Height = ScreenHeight;
            //计算Windows项目缩放比例
            ScreenHelper.ResetScreenScale();
            Initialization();
            Owner = null;
            WindowState = WindowState.Minimized;
            Visibility = Visibility.Hidden;
            ShowInTaskbar = false;
            //this.Hide();
            if (ChangeTextEvent != null)
            {
                _kHook.Stop();
                ChangeTextEvent("关闭窗口");
            }
        }

        #endregion 获取截图

        /// <summary>
        ///     获取时间戳
        /// </summary>
        /// <returns></returns>
        public string GetTimeStamp()
        {
            TimeSpan ts = DateTime.Now -
            new DateTime(
                1970,
                1,
                1,
                0,
                0,
                0,
                0
            );
            return Convert.ToInt64(ts.TotalMilliseconds).ToString();
        }

        #region 退出截图

        public void OnCancel()
        {
            //Close();
            //ImageHelper.DeleteObject(BitmapPtr);
            //ImageHelper.DeleteObject(JieTuBitmapPtr);
            Initialization();
            Owner = null;
            WindowState = WindowState.Minimized;
            Visibility = Visibility.Hidden;
            ShowInTaskbar = false;
            //this.Hide();
            //_Bitmap.Dispose();
            if (ChangeTextEvent != null)
            {
                _kHook.Stop();
                ChangeTextEvent("取消");
            }
        }

        #endregion 退出截图

        #region 完成截图

        public void OnOK()
        {
            Hidden();
            Thread t = new Thread(
                () =>
                {
                    Thread.Sleep(50);
                    WpfHelper.SafeRun(GetCapture);
                }
            ) { IsBackground = true };
            t.Start();
        }

        #endregion 完成截图

        #region 截图前隐藏窗口

        private void Hidden()
        {
            //隐藏尺寸RGB框
            if (AppModel.Current.MaskTopHeight < 40)
            {
                SizeRgb.Visibility = Visibility.Collapsed;
            }
            int need = SizeColorBar.Current.Selected == Tool.Null ? 30 : 67;
            if (AppModel.Current.MaskBottomHeight < need && AppModel.Current.MaskTopHeight < need)
            {
                ImageEditBar.Current.Visibility = Visibility.Collapsed;
                SizeColorBar.Current.Visibility = Visibility.Collapsed;
            }
            MainImage.ZoomThumbVisibility = Visibility.Collapsed;
        }

        #endregion 截图前隐藏窗口

        #region 鼠标及键盘事件

        private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (_isCapture)
            {
                return;
            }
            System.Windows.Point point = e.GetPosition(this);
            _x0 = point.X;
            _y0 = point.Y;
            _isMouseDown = true;
            Canvas.SetLeft(MainImage, _x0);
            Canvas.SetTop(MainImage, _y0);
            AppModel.Current.MaskLeftWidth = _x0;
            AppModel.Current.MaskRightWidth = ScreenWidth - _x0;
            AppModel.Current.MaskTopHeight = _y0;
            ShowSize.Visibility = Visibility.Visible;
        }

        private void Window_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            if (!_isMouseDown || _isCapture)
            {
                return;
            }
            _isMouseDown = false;
            if (MainImage.Width >= MinSize && MainImage.Height >= MinSize)
            {
                _isCapture = true;
                ImageEditBar.Current.Visibility = Visibility.Visible;
                ImageEditBar.Current.ResetCanvas();
                Cursor = Cursors.Arrow;
            }
        }

        private void Window_MouseMove(object sender, MouseEventArgs e)
        {
            System.Windows.Point point = e.GetPosition(this);
            System.Windows.Point screenP = PointToScreen(point);
            try
            {
                AppModel.Current.ShowRGB = ImageHelper.GetRgb((int)screenP.X, (int)screenP.Y);
            }
            catch (Exception ex)
            {
                MessageWindow.Show(ex.Message);
            }
            if (_isCapture)
            {
                return;
            }
            if (ShowRgb.Visibility == Visibility.Collapsed)
            {
                ShowRgb.Visibility = Visibility.Visible;
            }
            if (_isMouseDown)
            {
                double w = point.X - _x0;
                double h = point.Y - _y0;
                if (w < MinSize || h < MinSize)
                {
                    return;
                }
                if (MainImage.Visibility == Visibility.Collapsed)
                {
                    MainImage.Visibility = Visibility.Visible;
                }
                AppModel.Current.MaskRightWidth = ScreenWidth - point.X;
                AppModel.Current.MaskTopWidth = w;
                AppModel.Current.MaskBottomHeight = ScreenHeight - point.Y;
                AppModel.Current.ChangeShowSize();
                MainImage.Width = w;
                MainImage.Height = h;
            }
            else
            {
                AppModel.Current.ShowSizeLeft = point.X;
                AppModel.Current.ShowSizeTop = ScreenHeight - point.Y < 30 ? point.Y - 30 : point.Y + 10;
            }
        }

        private void Window_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Escape)
            {
                Initialization();
                Owner = null;
                WindowState = WindowState.Minimized;
                Visibility = Visibility.Hidden;
                ShowInTaskbar = false;
            }
        }

        #endregion 鼠标及键盘事件

        /// <summary>
        ///     关闭时清除tool页记录的截图数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Window_Closed(object sender, EventArgs e)
        {
            if (ClickCloseJietuWindowClick != null)
            {
                ClickCloseJietuWindowClick();
            }
        }

        /// <summary>
        ///     非正常关闭时jietuWindow=null；
        /// </summary>
        public delegate void CloseJietuWindowClick();

        /// <summary>
        ///     非正常关闭时jietuWindow=null；
        /// </summary>
        public event CloseJietuWindowClick ClickCloseJietuWindowClick;
    }
}