using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using AForge;
using AForge.Controls;
using AForge.Imaging;
using AForge.Video;
using AForge.Video.DirectShow;
using System.Threading;
using System.Reflection;
using ShenTun.Camera.Common;
namespace ShenTun.Camera.AForgeL
{
    public partial class FrmCamera : Form
    {
        private string path_current = "";
        private string ini_file = "";
        private Photo SelectedPhoto = null;
        private FilterInfoCollection videoDevices;
        private VideoCaptureDevice videoSource;
        private Bitmap imgMap;
        private int MaxPiexl = 0;
        private int MaxPiexlVideo = 0;
        private int _capturesTotal;
        private int _capturesTimes;
        private string _imageFormat;
        private Boolean _isAutoConnect = false;
        public DialogResponse Result { get; set; }
        public FrmCamera(int capturesTotal, int capturesTimes, string imageFormat, Boolean isAutoConnect)
        {
            InitializeComponent();
            this._capturesTotal = capturesTotal;
            this._capturesTimes = capturesTimes;
            this._imageFormat = imageFormat;
            this._isAutoConnect = isAutoConnect;
            SetConfigPath();
        }
        private void SetConfigPath()
        {
            path_current = string.Format("{0}\\ShenTun", System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments));
            if (!Directory.Exists(path_current))
            {
                Directory.CreateDirectory(path_current);
            }
            ini_file = string.Format("{0}\\Camera.ini", path_current);
        }
        private void SetFormat()
        {
            cmbFormat.ValueMember = "Code";
            cmbFormat.DisplayMember = "Name";
            cmbFormat.DataSource = Common.GetImageFormatList();
        }
        private void SetCmbDevice()
        {
            if (videoDevices.Count == 0) return;
            string name = "";
            List<DeviceItem> list = new List<DeviceItem>();
            for (int i = 0; i < videoDevices.Count; i++)
            {
                name = videoDevices[0].Name;
                DeviceItem d = new DeviceItem()
                {
                    Index = i,
                    Name = name,
                };
                list.Add(d);
            }
            cmbCamera.DisplayMember = "Name";
            cmbCamera.ValueMember = "Index";
            cmbCamera.DataSource = list;
        }
        private void SetCmbPixelVideo(VideoCapabilities[] _videoCapabilities)
        {
            if (_videoCapabilities.Length == 0) return;
            string text = "";
            List<VideoPixelItem> list = new List<VideoPixelItem>();
            for (int i = 0; i < _videoCapabilities.Length; i++)
            {
                text = string.Format("{0} x {1}", _videoCapabilities[i].FrameSize.Width, _videoCapabilities[i].FrameSize.Height);
                VideoPixelItem item = new VideoPixelItem()
                {
                    Index = i,
                    Text = text,
                };

                list.Add(item);
            }
            MaxPiexlVideo = _videoCapabilities.Length - 1;
            cmbPixelVideo.DataSource = list;
            cmbPixelVideo.DisplayMember = "Text";
            cmbPixelVideo.ValueMember = "Index";
        }
        private void SetCmbPixel(VideoCapabilities[] _videoCapabilities)
        {
            if (_videoCapabilities.Length == 0) return;
            string text = "";
            List<VideoPixelItem> list = new List<VideoPixelItem>();
            for (int i = 0; i < _videoCapabilities.Length; i++)
            {
                text = string.Format("{0} x {1}", _videoCapabilities[i].FrameSize.Width, _videoCapabilities[i].FrameSize.Height);
                VideoPixelItem item = new VideoPixelItem()
                {
                    Index = i,
                    Text = text,
                };

                list.Add(item);

            }
            MaxPiexl = _videoCapabilities.Length - 1;
            cmbPixel.DataSource = list;
            cmbPixel.DisplayMember = "Text";
            cmbPixel.ValueMember = "Index";
        }
        private void setEnabled(bool isEnabled)
        {
            btnConnect.Enabled = !isEnabled;
            cmbCamera.Enabled = !isEnabled;
            cmbPixelVideo.Enabled = isEnabled;
            btnDisConnect.Enabled = isEnabled;
            btnPhotoGraph.Enabled = isEnabled;
            btnProperty.Enabled = isEnabled;
            btnMultiPhoto.Enabled = isEnabled;
            btnClear.Enabled = isEnabled;
        }
        private void setInfo(string info)
        {
            lbInfoText.Text = info;
        }
        private void CameraConn()
        {
            videoSource = new VideoCaptureDevice(videoDevices[cmbCamera.SelectedIndex].MonikerString);
            int index = Convert.ToInt32(cmbPixel.SelectedValue);

            videoSource.VideoResolution = videoSource.VideoCapabilities[index];

            videoSourcePlayer1.VideoSource = videoSource;
        }

        private void FrmCamera_Load(object sender, EventArgs e)
        {
            setEnabled(false);
            try
            {
                // 枚举所有视频输入设备
                videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

                if (videoDevices.Count == 0)
                    throw new ApplicationException();

                SetCmbDevice();

                cmbCamera.SelectedIndex = 0;
                var _cameraDevice = new VideoCaptureDevice(videoDevices[0].MonikerString);
                SetCmbPixelVideo(_cameraDevice.VideoCapabilities);
                SetCmbPixel(_cameraDevice.SnapshotCapabilities);
                
                SetFormat();
                Common.GetImageFormatList();
                ImgFormatItem item = Common.iList.Where(p => (p.Name.Equals(_imageFormat.ToUpper()))).FirstOrDefault();
                cmbFormat.SelectedValue = item.Code;
                cmbFormat.Enabled = false;

                int cameraIndex = Convert.ToInt32(IniConfigHelper.ReadSetting(ini_file, "Option", "CameraIndex", "0"));
                cmbCamera.SelectedValue = cameraIndex;


                setInfo("设备初始化完成...");
                if (_isAutoConnect)
                    btnConnect_Click(null, null);

            }
            catch (ApplicationException)
            {
                //cmbCamera.Items.Add("没有本地设备");
                videoDevices = null;
                setInfo("没有本地设备...");
            }
            catch (Exception ex)
            {
                //cmbCamera.Items.Add("没有本地设备");
                videoDevices = null;
                setInfo("没有本地设备...");
                MessageBox.Show("初始化失败：" + ex.Message);
            }
        }
        private void cmbCamera_SelectedValueChanged(object sender, EventArgs e)
        {
            try
            {
                if (this.cmbCamera.SelectedValue == null) return;
                if (videoDevices.Count == 0 || videoDevices.Count == 1) return;
                int index = Convert.ToInt32(this.cmbCamera.SelectedValue);
                var _cameraDevice = new VideoCaptureDevice(videoDevices[index].MonikerString);
                SetCmbPixelVideo(_cameraDevice.VideoCapabilities);
                SetCmbPixel(_cameraDevice.SnapshotCapabilities);
            }
            catch (Exception ex)
            {
                MessageBox.Show("切换摄像头失败：" + ex.Message);
            }
        }

        private void cmbPixelVideo_SelectedValueChanged(object sender, EventArgs e)
        {
            try
            {
                if (videoSourcePlayer1.VideoSource == null) return;
                if (cmbCamera.Enabled) return;
                VideoCaptureDevice videoSource = (VideoCaptureDevice)videoSourcePlayer1.VideoSource;
                int index = Convert.ToInt32(cmbPixelVideo.SelectedValue);
                videoSource.VideoResolution = videoSource.VideoCapabilities[index];
                videoSourcePlayer1.VideoSource = videoSource;
                cmbPixel.SelectedValue = cmbPixelVideo.SelectedValue;
            }
            catch (Exception ex)
            {
                MessageBox.Show("切换分辨率异常：" + ex.Message);
            }
        }

        private void cmbPixel_SelectedValueChanged(object sender, EventArgs e)
        {
            try
            {
                if (videoSourcePlayer1.VideoSource == null) return;
                if (cmbCamera.Enabled) return;
                VideoCaptureDevice videoSource = (VideoCaptureDevice)videoSourcePlayer1.VideoSource;
                int index = Convert.ToInt32(cmbPixel.SelectedValue);
                videoSource.SnapshotResolution = videoSource.SnapshotCapabilities[index];
                videoSourcePlayer1.VideoSource = videoSource;
                if (videoSourcePlayer1.IsRunning)
                {
                    videoSourcePlayer1.SignalToStop();
                    videoSourcePlayer1.WaitForStop();
                }
                videoSourcePlayer1.Start();
            }
            catch (Exception ex)
            {
                MessageBox.Show("切换分辨率异常：" + ex.Message);
            }
        }

        private void btnConnect_Click(object sender, EventArgs e)
        {
            try
            {
                CameraConn();
                int pixelVideoIndex = Convert.ToInt32(IniConfigHelper.ReadSetting(ini_file, "Option", "PixelVideoIndex", "0"));
                //激活初始化按钮状态
                setEnabled(true);
                videoSourcePlayer1.Start();
                Thread.Sleep(300);
                cmbPixelVideo.SelectedValue = pixelVideoIndex;
                setInfo("设备已连接...");

            }catch(Exception ex)
            {
                MessageBox.Show("连接失败：" + ex.Message);
            }

           
        }

        private void btnDisConnect_Click(object sender, EventArgs e)
        {
            videoSourcePlayer1.SignalToStop();
            videoSourcePlayer1.WaitForStop();
            setEnabled(false);
            setInfo("设备已断开...");
        }
        void cs_SelectPhotoInfo(string photoId)
        {
            SelectedPhoto = null;
            foreach (var ctrl in flowLayoutPanel1.Controls)
            {
                if (!(ctrl is Photo)) continue;
                if (((Photo)ctrl).PhotoId != photoId)
                {
                    if (((Photo)ctrl).Selected == true)
                    {
                        ((Photo)ctrl).Selected = false;
                        ((Photo)ctrl).Refresh();
                    }
                }else
                {
                    SelectedPhoto = ((Photo)ctrl);
                    this.picCurrent.Image = SelectedPhoto.Image;
                }

            }
        }

        private void btnPhotoGraph_Click(object sender, EventArgs e)
        {
            try
            {
                if (!videoSourcePlayer1.IsRunning) return;

                imgMap = this.videoSourcePlayer1.GetCurrentVideoFrame();

                Photo photo = new Photo()
                {
                    Image = imgMap,
                    PhotoId = Guid.NewGuid().ToString(),
                    Size = new Size(40, 40),
                };
                photo.SelecPhotoInfo+=new Photo.SelectedPhoto(cs_SelectPhotoInfo);

                this.flowLayoutPanel1.Controls.Add(photo);

                this.picCurrent.Image = photo.Image;
                /*
                Button b1 = new Button();
                MessageBox.Show(string.Format("H:{0},W:{1}", b1.Size.Height, b1.Size.Width));
                 
                this.flowLayoutPanel1.Controls.Add(b1);
                 * * */
            }
            catch (Exception ex)
            {
                MessageBox.Show("摄像头异常：" + ex.Message);
            }
        }
        void progressChanged(CommonRequest requset)
        {
            string infoTitle = requset.Percentage == 100 ? "任务已完成" : "任务正在处理";
            string progress = String.Format("{0},进度【{1}%】", infoTitle, requset.Percentage);
            this.flowLayoutPanel1.Controls.Add(requset.Photo);
            this.picCurrent.Image = requset.Photo.Image;
            setInfo(progress);
        }
        void WorkCompleted(CommonResult result)
        {
            if (result.Success)
            {
                //操作成功的处理
            }

            this.btnMultiPhoto.Enabled = true;
        }
        private async Task<CommonResult> WorkStart(IProgress<CommonRequest> progress)
        {
            var result = new CommonResult();
            for (int i = 0; i < _capturesTotal; i++)
            {
                imgMap = this.videoSourcePlayer1.GetCurrentVideoFrame();
                Photo photo = new Photo()
                {
                    Image = imgMap,
                    PhotoId = Guid.NewGuid().ToString(),
                    Size = new Size(40, 40),
                };
                photo.SelecPhotoInfo += new Photo.SelectedPhoto(cs_SelectPhotoInfo);
                await Task.Delay(_capturesTimes);

                CommonRequest pro = new CommonRequest
                {
                    Percentage = i + 1,
                    Photo = photo,
                };
                progressChanged(pro);
                //progress.Report(pro); //异步窗口不需要在progress对象中进行UI更新
            }
            result.Success = true;

            return result;
        }
        private async void btnMultiPhoto_Click(object sender, EventArgs e)
        {
            try
            {
                if (videoSourcePlayer1.VideoSource == null) return;
                this.btnMultiPhoto.Enabled = false;
                var reporter = new Progress<CommonRequest>(progressChanged);
                var result = await this.WorkStart(reporter);
                this.WorkCompleted(result);
            }
            catch (Exception ex)
            {
                MessageBox.Show("连拍异常：" + ex.Message);
            }
        }

        private void btnProperty_Click(object sender, EventArgs e)
        {
            VideoCaptureDevice videoSource = (VideoCaptureDevice)videoSourcePlayer1.VideoSource;
            videoSource.DisplayPropertyPage(IntPtr.Zero);
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.flowLayoutPanel1.Controls.Count == 0) return;
                this.flowLayoutPanel1.Controls.Clear();
                this.picCurrent.Image = null;
            }
            catch (Exception ex)
            {
                MessageBox.Show("清空异常：" + ex.Message);
            }
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
               if(picCurrent.Image==null)
               {
                   MessageBox.Show("没有获取到图片，请先拍照");
                   return;
               }
               System.Drawing.Image img = picCurrent.Image;
                Bitmap bmp = (Bitmap)img;
                System.Drawing.Imaging.ImageFormat format = (ImageFormat)cmbFormat.SelectedValue;
                string extenName = Common.GetImageFormatString(format).ToLower();
                string fileName = string.Format("{0}\\{1}.{2}", path_current, "photo", extenName);
                ImageCodecInfo Encoder = ImageHelper.GetEncoder(format);
                System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
                EncoderParameters myEncoderParameters = new EncoderParameters(1);
                EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
                myEncoderParameters.Param[0] = myEncoderParameter;
                bmp.Save(fileName, Encoder, myEncoderParameters);

                System.Drawing.Image imge = System.Drawing.Image.FromFile(fileName);

                PhotoResponse resPhoto = new PhotoResponse()
                {
                    Photo = ImageHelper.ConvertImageToBase64(imge),
                    PhotoFormat = extenName,
                };

                DialogResponse response = new DialogResponse()
                {
                    code = 1,
                    message = "Success",
                    data = resPhoto,
                };

                Result = response;
                this.DialogResult = System.Windows.Forms.DialogResult.OK;
            }
            catch (Exception ex)
            {
                MessageBox.Show("保存异常：" + ex.Message);
            }
        }

        private void FrmCamera_FormClosed(object sender, FormClosedEventArgs e)
        {
            try
            {
                if (videoSourcePlayer1.IsRunning)
                {
                    videoSourcePlayer1.SignalToStop();
                    videoSourcePlayer1.WaitForStop();
                }
                if (cmbCamera.SelectedValue != null)
                {
                    IniConfigHelper.WriteSetting(ini_file, "Option", "CameraIndex", cmbCamera.SelectedValue.ToString());
                    IniConfigHelper.WriteSetting(ini_file, "Option", "PixelVideoIndex", cmbPixelVideo.SelectedValue.ToString());

                }
                if(Result==null)
                {
                    DialogResponse response = new DialogResponse()
                    {
                        code = 0,
                        message = "用户取消操作",
                    };
                    Result = response;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("关闭异常：" + ex.Message);
            }
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            try
            {

                DialogResponse response = new DialogResponse()
                {
                    code = 0,
                    message = "用户取消操作",
                };
                Result = response;
                this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            }
            catch (Exception ex)
            {
                MessageBox.Show("清空异常：" + ex.Message);
            }
        }


    }
}