using MvCodeReaderSDKNet;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace LeatherApp.Device
{
    /// <summary>
    /// 扫描器操作类
    /// </summary>
    public class ScannerCodeDev
    {
        public Action<DateTime,WarningEnum, string> WarningEvent; 
        public Action<string> ScanerEvent;


        //
        MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST m_stDeviceList;
        private MvCodeReader m_cMyDevice;
        bool m_bGrabbing = false;
        Thread m_hReceiveThread = null; 
         
        public bool start(int devIndex=0)
        {
            try
            {
                m_stDeviceList = new MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST();
                m_cMyDevice = new MvCodeReader();
                //====枚举设备
                if (!DeviceListAcq())
                    return false;

                //====打开设置
                if (m_stDeviceList.nDeviceNum == 0 )
                {
                    ShowErrorMsg("No stDevInfo, please select", 0);
                    return false;
                }

                // ch:获取选择的设备信息 | en:Get selected stDevInfo information
                MvCodeReader.MV_CODEREADER_DEVICE_INFO stDevInfo =
                    (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[devIndex],
                                                                  typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));

                // ch:打开设备 | en:Open stDevInfo
                if (null == m_cMyDevice)
                {
                    m_cMyDevice = new MvCodeReader();
                    if (null == m_cMyDevice)
                    {
                        return false;
                    }
                }

                int nRet = m_cMyDevice.MV_CODEREADER_CreateHandle_NET(ref stDevInfo);
                if (MvCodeReader.MV_CODEREADER_OK != nRet)
                {
                    ShowErrorMsg("MV_CODEREADER_CreateHandle_NET fail!", nRet);
                    return false;
                }

                nRet = m_cMyDevice.MV_CODEREADER_OpenDevice_NET();
                if (MvCodeReader.MV_CODEREADER_OK != nRet)
                {
                    m_cMyDevice.MV_CODEREADER_DestroyHandle_NET();
                    ShowErrorMsg("Device open fail!", nRet);
                    return false;
                }

                // ch:设置采集连续模式 | en:Set Continues Aquisition Mode 
                nRet = m_cMyDevice.MV_CODEREADER_SetEnumValue_NET("TriggerMode", (uint)MvCodeReader.MV_CODEREADER_TRIGGER_MODE.MV_CODEREADER_TRIGGER_MODE_OFF);
                if (MvCodeReader.MV_CODEREADER_OK != nRet)
                {
                    ShowErrorMsg("Set TriggerMode Off Fail!", nRet);
                    return false;
                }
                //bnGetParam_Click(null, null);// ch:获取参数 | en:Get parameters 

                //====开始采集 
                // ch:标志位置位true | en:Set position bit true
                m_hReceiveThread = new Thread(ReceiveThreadProcess);
                m_hReceiveThread.Start();
                m_bGrabbing = true;

                // ch:开始采集 | en:Start Grabbing
                nRet = m_cMyDevice.MV_CODEREADER_StartGrabbing_NET();
                if (MvCodeReader.MV_CODEREADER_OK != nRet)
                {
                    stop();
                    //m_bGrabbing = false;
                    //m_hReceiveThread.Join();
                    ShowErrorMsg("Start Grabbing Fail!", nRet);
                    return false;
                }

                return true;
            }
            catch (Exception ex)
            {
                WarningEvent?.Invoke(DateTime.Now,WarningEnum.Normal, ex.Message);
                return false;
            }
        }
        public bool stop()
        {
            if (!m_bGrabbing) return true;
            try
            {
                // ch:标志位设为false | en:Set flag bit false
                m_bGrabbing = false;

                // ch:停止采集 | en:Stop Grabbing
                int nRet = m_cMyDevice.MV_CODEREADER_StopGrabbing_NET();
                if (nRet != MvCodeReader.MV_CODEREADER_OK)
                {
                    ShowErrorMsg("Stop Grabbing Fail!", nRet);
                }

                if (null != m_hReceiveThread)
                {
                    m_hReceiveThread.Join();
                }

                //==关闭设备
                // ch:取流标志位清零 | en:Reset flow flag bit
                if (m_bGrabbing == true)
                {
                    m_bGrabbing = false;
                    // ch:停止采集 | en:Stop Grabbing
                    m_cMyDevice.MV_CODEREADER_StopGrabbing_NET();
                    m_hReceiveThread.Join();
                }

                // ch:关闭设备 | en:Close Device
                m_cMyDevice.MV_CODEREADER_CloseDevice_NET();
                m_cMyDevice.MV_CODEREADER_DestroyHandle_NET();
                return true;
            }
            catch
            {
                return false;
            }

        }

        //枚举设备
        private bool DeviceListAcq()
        {
            // ch:创建设备列表 | en:Create Device List
            System.GC.Collect(); 
            m_stDeviceList.nDeviceNum = 0;
            int nRet = MvCodeReader.MV_CODEREADER_EnumDevices_NET(ref m_stDeviceList, MvCodeReader.MV_CODEREADER_GIGE_DEVICE);
            if (0 != nRet)
            {
                ShowErrorMsg("Enumerate devices fail!", nRet);
                return false;
            }

            if (0 == m_stDeviceList.nDeviceNum)
            {
                ShowErrorMsg("None Device!", 0);
                return false;
            }
             
            return true; 
        }
        //设置连续模式
        private bool setMode()
        { 
            int nRet = m_cMyDevice.MV_CODEREADER_SetEnumValue_NET("TriggerMode", (uint)MvCodeReader.MV_CODEREADER_TRIGGER_MODE.MV_CODEREADER_TRIGGER_MODE_OFF);
            if (MvCodeReader.MV_CODEREADER_OK != nRet)
            {
                ShowErrorMsg("Set TriggerMode Off Fail!", nRet);
                return false;
            }
            return true;
        }
        public void ReceiveThreadProcess()
        { 
            int nRet = MvCodeReader.MV_CODEREADER_OK;

            IntPtr pData = IntPtr.Zero;
            MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2 stFrameInfoEx2 = new MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2();
            IntPtr pstFrameInfoEx2 = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2)));
            Marshal.StructureToPtr(stFrameInfoEx2, pstFrameInfoEx2, false);

            while (m_bGrabbing)
            {
                nRet = m_cMyDevice.MV_CODEREADER_GetOneFrameTimeoutEx2_NET(ref pData, pstFrameInfoEx2, 1000);
                if (nRet == MvCodeReader.MV_CODEREADER_OK)
                {
                    stFrameInfoEx2 = (MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2)Marshal.PtrToStructure(pstFrameInfoEx2, typeof(MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2));
                }

                if (nRet == MvCodeReader.MV_CODEREADER_OK)
                {
                    if (0 >= stFrameInfoEx2.nFrameLen)
                    {
                        continue;
                    }
                     
                    MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2 stBcrResultEx2 = (MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2)Marshal.PtrToStructure(stFrameInfoEx2.UnparsedBcrList.pstCodeListEx2, typeof(MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2));
                    List<string> barCodes = new List<string>();
                    for (int i = 0; i < stBcrResultEx2.nCodeNum; ++i)
                    {
                        //DataGridViewRow cDataRow = new DataGridViewRow();
                        //cDataRow.CreateCells(dataGridView1);
                        //cDataRow.Cells[0].Value = this.dataGridView1.Rows.Count;
                        //DateTime cDateTime = DateTime.Now;
                        //cDataRow.Cells[1].Value = cDateTime.ToString();
                        //cDataRow.Cells[2].Value = stBcrResultEx2.stBcrInfoEx2[i].nTotalProcCost.ToString();
                        //cDataRow.Cells[3].Value = stBcrResultEx2.stBcrInfoEx2[i].sAlgoCost.ToString();
                        //cDataRow.Cells[4].Value = stBcrResultEx2.stBcrInfoEx2[i].sPPM.ToString();
                        //cDataRow.Cells[5].Value = GetBarType((MvCodeReader.MV_CODEREADER_CODE_TYPE)stBcrResultEx2.stBcrInfoEx2[i].nBarType);
                        String strCode = System.Text.Encoding.Default.GetString(stBcrResultEx2.stBcrInfoEx2[i].chCode);
                        //cDataRow.Cells[6].Value = String.IsNullOrEmpty(strCode) ? "NoRead" : strCode;//barcode
                        //cDataRow.Cells[7].Value = stBcrResultEx2.stBcrInfoEx2[i].stCodeQuality.nOverQuality.ToString();
                        //cDataRow.Cells[8].Value = stBcrResultEx2.stBcrInfoEx2[i].nIDRScore.ToString(); 
                        if (!String.IsNullOrEmpty(strCode))
                            barCodes.Add(strCode.Replace("\0", "").Trim());
                    }
                    ScanerEvent?.BeginInvoke(barCodes[0], null, null);
                }
            }
        }
        private static String GetBarType(MvCodeReader.MV_CODEREADER_CODE_TYPE nBarType)
        {
            switch (nBarType)
            {
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_TDCR_DM:
                    return "DM码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_TDCR_QR:
                    return "QR码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_EAN8:
                    return "EAN8码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_UPCE:
                    return "UPCE码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_UPCA:
                    return "UPCA码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_EAN13:
                    return "EAN13码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_ISBN13:
                    return "ISBN13码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_CODABAR:
                    return "库德巴码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_ITF25:
                    return "交叉25码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_CODE39:
                    return " Code 39码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_CODE93:
                    return "Code 93码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_CODE128:
                    return "Code 128码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_TDCR_PDF417:
                    return "PDF417码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_MATRIX25:
                    return "MATRIX25码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_MSI:
                    return "MSI码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_CODE11:
                    return "Code 11码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_INDUSTRIAL25:
                    return "industria125码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_CHINAPOST:
                    return "中国邮政码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_BCR_ITF14:
                    return "交叉14码";
                case MvCodeReader.MV_CODEREADER_CODE_TYPE.MV_CODEREADER_TDCR_ECC140:
                    return "ECC140码";
                default:
                    return "/";
            }
        }

        // ch:显示错误信息 | en:Show error message
        private void ShowErrorMsg(string csMessage, int nErrorNum)
        {
            string errorMsg;
            if (nErrorNum == 0)
            {
                errorMsg = csMessage;
            }
            else
            {
                errorMsg = csMessage + ": Error =" + String.Format("{0:X}", nErrorNum);
            }

            switch (nErrorNum)
            {
                case MvCodeReader.MV_CODEREADER_E_HANDLE: errorMsg += " Error or invalid handle "; break;
                case MvCodeReader.MV_CODEREADER_E_SUPPORT: errorMsg += " Not supported function "; break;
                case MvCodeReader.MV_CODEREADER_E_BUFOVER: errorMsg += " Cache is full "; break;
                case MvCodeReader.MV_CODEREADER_E_CALLORDER: errorMsg += " Function calling order error "; break;
                case MvCodeReader.MV_CODEREADER_E_PARAMETER: errorMsg += " Incorrect parameter "; break;
                case MvCodeReader.MV_CODEREADER_E_RESOURCE: errorMsg += " Applying resource failed "; break;
                case MvCodeReader.MV_CODEREADER_E_NODATA: errorMsg += " No data "; break;
                case MvCodeReader.MV_CODEREADER_E_PRECONDITION: errorMsg += " Precondition error, or running environment changed "; break;
                case MvCodeReader.MV_CODEREADER_E_VERSION: errorMsg += " Version mismatches "; break;
                case MvCodeReader.MV_CODEREADER_E_NOENOUGH_BUF: errorMsg += " Insufficient memory "; break;
                case MvCodeReader.MV_CODEREADER_E_UNKNOW: errorMsg += " Unknown error "; break;
                case MvCodeReader.MV_CODEREADER_E_GC_GENERIC: errorMsg += " General error "; break;
                case MvCodeReader.MV_CODEREADER_E_GC_ACCESS: errorMsg += " Node accessing condition error "; break;
                case MvCodeReader.MV_CODEREADER_E_ACCESS_DENIED: errorMsg += " No permission "; break;
                case MvCodeReader.MV_CODEREADER_E_BUSY: errorMsg += " Device is busy, or network disconnected "; break;
                case MvCodeReader.MV_CODEREADER_E_NETER: errorMsg += " Network error "; break;
            }

            WarningEvent?.Invoke(DateTime.Now,WarningEnum.Low, errorMsg);
        }

    }
}