using Admin.Core.Common;

using log4net;
using MvCodeReaderSDKNet;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Runtime.InteropServices;
using System.Text;
using UAParser;
using static System.Runtime.CompilerServices.RuntimeHelpers;

namespace Aucma.Core.Scanner
{
    public class MvCodeHelper
    {

        #region 委托事件

        #region 条码绑定上位机委托事件
        /// <summary>
        /// code1扫码信息刷新
        /// </summary>
        /// <param name="Code1"></param>
        public delegate void ReceiveCode1(string code1);
        public static event ReceiveCode1? ReceiveCode1Event;
        /// <summary>
        /// code2扫码信息刷新,记录表更新
        /// </summary>
        /// <param name="Code1"></param>
        public delegate void ReceiveCode2(string code2);
        public static event ReceiveCode2? ReceiveCode2Event;
        #endregion

        #region 成品下线上位机委托事件
        /// <summary>
        /// code扫码信息刷新
        /// </summary>
        /// <param name="Code1"></param>
        public delegate void ReceiveCode(string code, int scannerNo);
        public static event ReceiveCode? ReceiveCodeEvent;
     
        #endregion


        #endregion
        private static readonly log4net.ILog log = LogManager.GetLogger(typeof(MvCodeHelper));
        // 获取到的所有设备
        public static MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST m_stDeviceList = new MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST();

        // 连接上的设备和其ip(string)集合
        public static Dictionary<MvCodeReader, string> m_cMyDevices = new Dictionary<MvCodeReader, string>();


        #region 设备连接状态
        /// <summary>
        /// 获取不到任务设备即连接失败
        /// </summary>
        /// <returns></returns>
        public bool ConnectionStatus(string ip)
        {
            // 遍历所有已打开相机
            foreach (KeyValuePair<MvCodeReader, string> hashmap in m_cMyDevices)
            {
                if (ip.Equals(hashmap.Value))
                {
                    return true;
                }
            }
            return false;
        }
        #endregion

        #region 获取设备列表
        /// <summary>
        /// 获取设备列表
        /// </summary>
        public static void DeviceListAcqAndOpen()
        {
            try
            {
                log.Info("获取扫码器设备列表,进入DeviceListAcq()方法");
                System.GC.Collect();
                m_stDeviceList.nDeviceNum = 0;
                // 获取设备列表
                int nRet = MvCodeReader.MV_CODEREADER_EnumDevices_NET(ref m_stDeviceList, MvCodeReader.MV_CODEREADER_GIGE_DEVICE);
                if (0 != nRet)
                {
                    log.Info("获取扫码器列表失败,扫码器错误码:" + nRet);
                    return;
                }

                if (0 == m_stDeviceList.nDeviceNum)
                {
                    log.Info("获取扫码器数量为0，请检查扫码器连接:");
                    return;
                }

                MvCodeReader m_cMyDevice = new MvCodeReader();

                //打开所有设备
                for (int i = 0; i < m_stDeviceList.nDeviceNum; i++)
                {
                    MvCodeReader.MV_CODEREADER_DEVICE_INFO stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
                    if (stDevInfo.nTLayerType == MvCodeReader.MV_CODEREADER_GIGE_DEVICE)
                    {
                        IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(stDevInfo.SpecialInfo.stGigEInfo, 0);
                        MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO stGigEDeviceInfo = (MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO));

                        // 获取ip
                        string ip = ((stGigEDeviceInfo.nCurrentIp & 0xff000000) >> 24) + "." + ((stGigEDeviceInfo.nCurrentIp & 0x00ff0000) >> 16) + "." + ((stGigEDeviceInfo.nCurrentIp & 0x0000ff00) >> 8) + "." + (stGigEDeviceInfo.nCurrentIp & 0x000000ff);
                        //    Console.WriteLine($"打印扫码设备信息，下标：{i}；IP：{ip}");
                        log.Info("扫码器设备[" + i + "],ip:" + ip);
                        // 打开第i个设备
                        stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
                        nRet = m_cMyDevice.MV_CODEREADER_CreateHandle_NET(ref stDevInfo);//创建设备
                        if (MvCodeReader.MV_CODEREADER_OK != nRet)
                        {
                            log.Error("创建第" + i + "个扫码器设备失败,ip:" + ip);
                            return;
                        }
                        log.Info("创建第" + i + "个扫码器设备成功,ip:" + ip);

                        nRet = m_cMyDevice.MV_CODEREADER_OpenDevice_NET();//打开设备
                        if (MvCodeReader.MV_CODEREADER_OK != nRet)
                        {
                            log.Error("打开第" + i + "个扫码器设备失败，销毁设备,ip:" + ip);
                            m_cMyDevice.MV_CODEREADER_DestroyHandle_NET();
                            return;
                        }
                        else
                        {
                            m_cMyDevices.Add(m_cMyDevice, ip);
                            log.Info("打开第" + i + "个扫码器设备成功,ip:" + ip);
                        }

                        // ch:设置触发模式为off || en:set trigger mode as off
                        if (MvCodeReader.MV_CODEREADER_OK != m_cMyDevice.MV_CODEREADER_SetEnumValue_NET("TriggerMode", 0))
                        {
                            log.Error("设置第" + i + "个扫码器设备触发模式失败，ip:" + ip);
                            return;
                        }
                        log.Info("第" + i + "个扫码器设备设置采集连续模式成功！ip:" + ip);

                        // ch:开启抓图 | en:start grab
                        nRet = m_cMyDevice.MV_CODEREADER_StartGrabbing_NET();
                        if (MvCodeReader.MV_CODEREADER_OK != nRet)
                        {
                            log.Error("设置第" + i + "个扫码器设备开启抓图失败，ip:" + ip);
                            return;
                        }
                        log.Info("*****************************************************************");
                        log.Info("第" + i + "个扫码器设备创建，打开，开启连续抓图设置成功！ip:" + ip);
                    }
                }
            }
            catch (Exception ex)
            {
                log.Error("获取打开设备异常:" + ex);
            }
        }
        #endregion

        #region 开启扫描
        public static void StartGrab()
        {
            try
            {
                // 所有已打开相机开始扫码
                foreach (KeyValuePair<MvCodeReader, string> hashmap in m_cMyDevices)
                {
                    Task.Run(() =>
                    {
                        // 记录相机上一次扫描到的条码
                        string lastStr = string.Empty;
                        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);
                        int nCount = 0;
                        while (true)
                        {
                            nRet = hashmap.Key.MV_CODEREADER_GetOneFrameTimeoutEx2_NET(ref pData, pstFrameInfoEx2, 1000);
                            // ch:获取一帧图像 | en:Get one image
                            if (MvCodeReader.MV_CODEREADER_OK == nRet)
                            {
                                stFrameInfoEx2 = (MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2)Marshal.PtrToStructure(pstFrameInfoEx2, typeof(MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2));
                                // 分配条码内存空间
                                MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2 stBcrResult = (MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2)Marshal.PtrToStructure(stFrameInfoEx2.UnparsedBcrList.pstCodeListEx2, typeof(MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2));
                                for (int i = 0; i < stBcrResult.nCodeNum; ++i)
                                {
                                    bool bIsValidUTF8 = IsTextUTF8(stBcrResult.stBcrInfoEx2[i].chCode);
                                    if (bIsValidUTF8)
                                    {
                                        // string strCode = System.Text.Encoding.Default.GetString(stBcrResult.stBcrInfoEx2[i].chCode);
                                        string strCode = Encoding.UTF8.GetString(stBcrResult.stBcrInfoEx2[i].chCode);
                                        log.Info("bIsValidUTF8:: Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode.Trim().TrimEnd('\0') + "]");
                                    }
                                    else
                                    {
                                        byte[] buffer = new byte[22];
                                        if (stBcrResult.stBcrInfoEx2[i].chCode.Length > 0)
                                        {
                                            Array.Copy(stBcrResult.stBcrInfoEx2[i].chCode, buffer, 22);
                                        }
                                        string strCode = Encoding.GetEncoding("UTF-8").GetString(buffer).Trim().TrimEnd('\0');
                                        log.Info("相机ip:" + hashmap.Value + "   Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode + "]");
                                        if (!string.IsNullOrEmpty(strCode))
                                        {
                                            if (strCode != lastStr)
                                            {
                                                // 处理业务
                                                // 扫码器1，处理扫码器1的业务
                                                if (hashmap.Value.Equals(Appsettings.app("Middleware", "Scanner1", "Ip")))
                                                {
                                                    #region 条码绑定业务处理
                                                    ReceiveCode1Event?.Invoke(strCode);
                                                    #endregion
                                                }
                                                else if (hashmap.Value.Equals(Appsettings.app("Middleware", "Scanner2", "Ip")))     // 扫码器2，处理扫码器2的业务
                                                {
                                                    #region  条码绑定业务处理
                                                    ReceiveCode2Event?.Invoke(strCode);
                                                    #endregion
                                                }

                                            }
                                            lastStr = strCode;
                                        }
                                    }
                                }
                            }
                            Thread.Sleep(500);

                        }

                    });

                }
            }
            catch (Exception ex)
            {
                log.Error("开启相机扫描异常:" + ex);
            }

        }
        #endregion

        #region 关闭设备
        public static void CloseDevice()
        {
            try
            {
                log.Info("开始关闭所有设备");
                int nRet = MvCodeReader.MV_CODEREADER_OK;
                // 关闭所有已打开相机
                foreach (KeyValuePair<MvCodeReader, string> hashmap in m_cMyDevices)
                {
                    // ch:停止抓图 | en:Stop grab image
                    nRet = hashmap.Key.MV_CODEREADER_StopGrabbing_NET();
                    if (MvCodeReader.MV_CODEREADER_OK != nRet)
                    {
                        log.Error("设备ip:" + hashmap.Value + "停止抓图失败");
                        Console.WriteLine("Stop grabbing failed{0:x8}", nRet);
                    }
                    // ch:关闭设备 | en:Close device
                    nRet = hashmap.Key.MV_CODEREADER_CloseDevice_NET();
                    if (MvCodeReader.MV_CODEREADER_OK != nRet)
                    {
                        log.Error("设备ip:" + hashmap.Value + "关闭失败");

                    }

                    // ch:销毁设备 | en:Destroy device
                    nRet = hashmap.Key.MV_CODEREADER_DestroyHandle_NET();
                    if (MvCodeReader.MV_CODEREADER_OK != nRet)
                    {
                        log.Error("设备ip:" + hashmap.Value + "销毁失败");
                    }
                    log.Error("设备ip:" + hashmap.Value + "关闭成功！");
                }
            }
            catch (Exception ex)
            {
                log.Error("设备关闭异常:" + ex);
            }


        }
        #endregion


        #region 判断字符编码
        /// <summary>
        /// 判断字符编码
        /// </summary>
        /// <param name="inputStream"></param>
        /// <returns></returns>
        public static bool IsTextUTF8(byte[] inputStream)
        {
            int encodingBytesCount = 0;
            bool allTextsAreASCIIChars = true;

            for (int i = 0; i < inputStream.Length; i++)
            {
                byte current = inputStream[i];

                if ((current & 0x80) == 0x80)
                {
                    allTextsAreASCIIChars = false;
                }
                // First byte
                if (encodingBytesCount == 0)
                {
                    if ((current & 0x80) == 0)
                    {
                        // ASCII chars, from 0x00-0x7F
                        continue;
                    }

                    if ((current & 0xC0) == 0xC0)
                    {
                        encodingBytesCount = 1;
                        current <<= 2;

                        // More than two bytes used to encoding a unicode char.
                        // Calculate the real length.
                        while ((current & 0x80) == 0x80)
                        {
                            current <<= 1;
                            encodingBytesCount++;
                        }
                    }
                    else
                    {
                        // Invalid bits structure for UTF8 encoding rule.
                        return false;
                    }
                }
                else
                {
                    // Following bytes, must start with 10.
                    if ((current & 0xC0) == 0x80)
                    {
                        encodingBytesCount--;
                    }
                    else
                    {
                        // Invalid bits structure for UTF8 encoding rule.
                        return false;
                    }
                }
            }
            if (encodingBytesCount != 0)
            {
                // Invalid bits structure for UTF8 encoding rule.
                // Wrong following bytes count.
                return false;
            }
            // Although UTF8 supports encoding for ASCII chars, we regard as a input stream, whose contents are all ASCII as default encoding.
            return !allTextsAreASCIIChars;
        }

        #endregion

        #region 将Byte转换为结构体类型
        //将Byte转换为结构体类型
        public static object ByteToStruct(byte[] bytes, Type type)
        {
            int size = Marshal.SizeOf(type);
            if (size > bytes.Length)
            {
                return null;
            }
            //分配结构体内存空间
            IntPtr structPtr = Marshal.AllocHGlobal(size);
            //将byte数组拷贝到分配好的内存空间
            Marshal.Copy(bytes, 0, structPtr, size);
            //将内存空间转换为目标结构体
            object obj = Marshal.PtrToStructure(structPtr, type);
            //释放内存空间
            Marshal.FreeHGlobal(structPtr);
            return obj;
        }
        #endregion



    }
}