using LogClass;
using MvCameraControl;
using System;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using static System.Net.Mime.MediaTypeNames;

namespace CCDCountWpf.WpfPage
{
    /// <summary>
    /// MainPage.xaml 的交互逻辑
    /// </summary>
    public partial class MainPage : Page
    {
        #region 变量与实例
        bool IsShow = false;
        SystemMonitor monitor = new SystemMonitor();
        #endregion
        public MainPage()
        {
            InitializeComponent();
            StartUpdataShowDataThread();
        }

        /// <summary>
        ///  启动更新显示数据线程
        /// </summary>
        private void StartUpdataShowDataThread()
        {
            IsShow = true;
            Bitmap image = null;
            const int targetMsPerFrame = 100; // 20FPS=50ms
            Stopwatch renderSW = new Stopwatch();
            Task.Run(() =>
            {
                while (IsShow)
                {
                    UpdataShuLiShowData();
                    UpdateMonitorMessage();
                    renderSW.Restart();
                    if (MessageBus.mainThreadClass == null)
                    {
                        LOG.log(string.Format("{0}：当前加载相机空", "IdentifyCameraForm-StartShowImageThread"));
                        Thread.Sleep(100);
                        continue;
                    }
                    if (MessageBus.mainThreadClass.HistoryActiveNum > 0)
                    {
                        MessageBus.mainThreadClass.GetShowImage(800, out image);
                    }
                    else
                    {
                        MessageBus.mainThreadClass.GetNullShowImage(4096, 800, out image);
                        Thread.Sleep(100);
                        LOG.log(string.Format("{0}-{1}号相机线程启动异常", "IdentifyCameraForm-StartShowImageThread:", MessageBus.mainThreadClass.ThisCamerNo));
                    }
                    if (image == null)
                    {
                        LOG.log(string.Format("{0}：获取图片失败", "IdentifyCameraForm-StartShowImageThread"));
                        continue;
                    }
                    System.Windows.Application.Current.Dispatcher.BeginInvoke(new Action(() =>
                    {
                        var bitmapImage = ConvertToBitmapImage(image);
                        ShowBox.Source = bitmapImage;
                    }));
                    //进行精准20帧控制
                    int elapsed = (int)renderSW.ElapsedMilliseconds;
                    if (elapsed < targetMsPerFrame)
                    {
                        Thread.Sleep(targetMsPerFrame - elapsed);
                    }
                    Thread.Sleep(50);
                }
            });
        }

        /// <summary>
        ///  停止更新显示数据线程
        /// </summary>
        private void StopUpdataShowDataThread()
        {
            IsShow = false;
        }


        /// <summary>
        /// 更新数粒显示数据
        /// </summary>
        private void UpdataShuLiShowData()
        {
            if (MessageBus.mainThreadClass == null) return;
            if (MessageBus.mainThreadClass.ShuLiState)
            {
                System.Windows.Application.Current.Dispatcher.Invoke(() =>
                {

                    CamRunStaticLab.Foreground = MessageBus.mainThreadClass.CameraRunStatic == true ? System.Windows.Media.Brushes.Green : System.Windows.Media.Brushes.Red;
                    CamRunStaticLab.Content = MessageBus.mainThreadClass.CameraRunStatic == true ? "运行中" : "未运行";
                });
            }
            else
            {
                System.Windows.Application.Current.Dispatcher.Invoke(() =>
                {

                    CamRunStaticLab.Foreground = System.Windows.Media.Brushes.Yellow;
                    CamRunStaticLab.Content = "视野遮挡";
                });
            }
            System.Windows.Application.Current.Dispatcher.Invoke(() =>
            {
                AllActiveNumTbx.Text = MessageBus.mainThreadClass.HistoryActiveNum.ToString();
                AllOkNumTbx.Text = MessageBus.mainThreadClass.NgHistoryNum.ToString();
                AllNgNumTbx.Text = MessageBus.mainThreadClass.OkHistoryNum.ToString();
                ShuLiSpeedTbx.Text = MessageBus.mainThreadClass.GetOneSecondActiveNum().ToString();
            });
        }

        /// <summary>
        /// 更新监控信息
        /// </summary>
        private void UpdateMonitorMessage()
        {
            System.Windows.Application.Current.Dispatcher.Invoke(() =>
            {
                RamMonitorLab.Content = $"可用内存: {monitor.GetAvailableMemory()}MB";
                CPUMonitorLab.Content = $"CPU: {monitor.GetCpuUsage().ToString("0.00")}%";
            });
        }

        // Bitmap 转 BitmapImage 的辅助方法
        private BitmapImage ConvertToBitmapImage(Bitmap bitmap)
        {
            using (MemoryStream memory = new MemoryStream())
            {
                bitmap.Save(memory, System.Drawing.Imaging.ImageFormat.Png);
                memory.Position = 0;
                var bitmapImage = new BitmapImage();
                bitmapImage.BeginInit();
                bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
                bitmapImage.StreamSource = memory;
                bitmapImage.EndInit();
                return bitmapImage;
            }
        }

        private void DataClear_Click(object sender, RoutedEventArgs e)
        {
            MessageBus.mainThreadClass.ClearHistoryActive();
        }

        private void Page_Loaded(object sender, RoutedEventArgs e)
        {
            this.Width = double.NaN; // 等效于 Auto
            this.Height = double.NaN;
        }
    }
}