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

namespace demo.ExternalDevices
{
    class IDCard
    {
        #region "dll声明"
        /// <summary>
        /// 打开串口/USB。 
        /// </summary>
        /// <param name="iPort">[in] 整数， 表示端口号。 1-16（十进制）为串口,1001-1016（十进制）为USB口,缺省的一个USB 设备端口号是 1001。</param>
        /// <returns>0x90 打开端口成功;1 打开端口失败/端口号不合法</returns>
        [DllImport("sdtapi.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern int SDT_OpenPort(int iPort);
        /// <summary>
        /// 关闭串口/USB。
        /// </summary>
        /// <param name="iPort">[in] 整数，表示端口号。</param>
        /// <returns>0x90 关闭端口成功。 0x01 端口号不合法</returns>
        [DllImport("sdtapi.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern int SDT_ClosePort(int iPort);
        /// <summary>
        /// 读卡
        /// </summary>
        /// <param name="iPort"></param>
        /// <param name="pucManaInfo">证/卡芯片管理号， 4 个字节。</param>
        /// <param name="iIfOpen"></param>
        /// <returns>0x9f 找卡成功；0x80 找卡失败</returns>
        [DllImport("sdtapi.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern int SDT_StartFindIDCard(int iPort, byte[] pucManaInfo, int iIfOpen);
        /// <summary>
        /// 选择卡
        /// </summary>
        /// <param name="iPort"></param>
        /// <param name="pucManaMsg">卡体管理号,28 字节。</param>
        /// <param name="iIfOpen"></param>
        /// <returns>0x90 读成功;其他 读失败（具体含义参见返回码表</returns>
        [DllImport("sdtapi.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern int SDT_SelectIDCard(int iPort, byte[] pucManaMsg, int iIfOpen);
        /// <summary>
        /// 读取基本数据
        /// </summary>
        /// <param name="iPort"></param>
        /// <param name="pucCHMsg">读到的文字信息>=256</param>
        /// <param name="puiCHMsgLen">文字信息长度<=256</param>
        /// <param name="pucPHMsg">读到的相片信息</param>
        /// <param name="puiPHMsgLen">相片信息长度</param>
        /// <param name="iIfOpen">，0表示 不在该函数内部打开和关闭串口，此时 不在该函数内部打开和关闭串口，此时 不在该函数内部打开和关闭串口，此时 不在该函数内部打开和关闭串口，此时 不在该函数内部打开和关闭串口，此时 不在该函数内部打开和关闭串口，此时 不在该函数内部打开和关闭串口，此时 应确保之前调用了 确保之前调用了 确保之前调用了 确保之前调用了 SDT_OpenPort 打开端口，并且 打开端口，并且 应在不需要与端口通信时，调用 在不需要与端口通信时，调用 SDT_ClosePort DT_ClosePort 关闭端口；非 关闭端口；非 0表示在 API 函数内部包含了打开端口和关闭，之前不 函数内部包含了打开端口和关闭，之前不 函数内部包含了打开端口和关闭，之前不 需要调用 SDT_OpenPort ，也不用 再调，也不用 再调SDT_ClosePort 。</param>
        /// <returns></returns>
        [DllImport("sdtapi.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern int SDT_ReadBaseMsg(int iPort, byte[] pucCHMsg, ref UInt32 puiCHMsgLen, byte[] pucPHMsg, ref UInt32 puiPHMsgLen, int iIfOpen);
        /// <summary>
        /// 读取图片;
        /// </summary>
        /// <param name="file_name">wlt文件名，后缀是.wlt</param>
        /// <param name="Port">阅读设备通讯接口类型1串口 2USB</param>
        /// <returns>1，正确； 0调用stdapi.dll错误，-1相片解码错误，-2wlt文件后最错误，-3wlt文件打开错误，-4wlt文件格式错误，-5软件未授权,-6设备连接错误</returns>
        [DllImport("WltRS.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern int GetBmp(String file_name, int Port);
        [DllImport("sdtapi.dll")]
        public static extern int SDT_ReadBaseMsgToFile(int iPortID, string fileName1, ref UInt32 puiCHMsgLen, string fileName2, ref UInt32 puiPHMsgLen, int iIfOpen);
        #endregion

        //public static object thisLock = new object();
        public static int hsection_ReadMsg = sys.sys_InitializeCriticalSection();
        public static bool ReadMsg(int portNo, ref string name, ref string IDNo)
        {
            sys.sys_EnterCriticalSection(hsection_ReadMsg);
            //lock (thisLock)
            //{
                bool flag = false;
                flag = OpenPort(portNo);
                flag = ReadIDNameAndNo(portNo, ref name, ref IDNo);
                ClosePort(portNo);
                sys.sys_LeaveCriticalSection(hsection_ReadMsg);
                return flag;
            //}
        }

        public static int hsection_OpenPort = sys.sys_InitializeCriticalSection();
        public static bool OpenPort(int portNo)
        {
            //sys.sys_EnterCriticalSection(hsection_OpenPort);
            bool flag = false;
            int ret = 0x90;
            try
            {
                ret = SDT_OpenPort(portNo);
                if (ret == 144)
                {
                    flag = true;
                }
            }
            catch { }
            //sys.sys_LeaveCriticalSection(hsection_OpenPort);
            return flag;
        }

        public static int hsection_ClosePort = sys.sys_InitializeCriticalSection();
        public static void ClosePort(int portNo)
        {
            //sys.sys_EnterCriticalSection(hsection_ClosePort);
            SDT_ClosePort(portNo);
            //sys.sys_LeaveCriticalSection(hsection_ClosePort);
        }

        public static int hsection_ReadIDC = sys.sys_InitializeCriticalSection();
        public static bool ReadIDNameAndNo(int portNo, ref string name, ref string IDNo)
        {
            //sys.sys_EnterCriticalSection(hsection_ReadIDC);
            bool flag = false;
            int iRet = 0x90;          //返回码
            int iIfOpen = 0;             //是否需要打开端口
            byte[] pubManaInfo = new byte[255];    //身份证管理号信息
            byte[] pubManaMsg = new byte[255];    //
            byte[] pubCHMsg = new byte[512];  //文字信息
            byte[] pubPHMsg = new byte[3024]; //照片信息
            UInt32 puiCHMsgLen = 0;              //文字信息的长度
            UInt32 puiPHMsgLen = 0;              //照片信息的长度
            iRet = SDT_StartFindIDCard(portNo, pubManaInfo, iIfOpen);
            if (iRet != 159)
            {
                sys.sys_LeaveCriticalSection(hsection_ReadIDC);
                return flag;
            }
            iRet = SDT_SelectIDCard(portNo, pubManaMsg, iIfOpen);
            if (iRet != 144)
            {
                sys.sys_LeaveCriticalSection(hsection_ReadIDC);
                return flag;
            }
            iRet = SDT_ReadBaseMsg(portNo, pubCHMsg, ref puiCHMsgLen, pubPHMsg, ref puiPHMsgLen, iIfOpen);
            if (iRet != 144)
            {
                sys.sys_LeaveCriticalSection(hsection_ReadIDC);
                return flag;
            }
            iRet = SDT_ClosePort(portNo);
            if (iRet != 144)
            {
                sys.sys_LeaveCriticalSection(hsection_ReadIDC);
                return flag;
            }
            else
            {
                flag = true;
                string cardMsg = System.Text.ASCIIEncoding.Unicode.GetString(pubCHMsg);
                name = System.Text.ASCIIEncoding.Unicode.GetString(pubCHMsg, 0, 30).Trim();
                IDNo = System.Text.ASCIIEncoding.Unicode.GetString(pubCHMsg, 122, 36).Trim();                
            }
            //sys.sys_LeaveCriticalSection(hsection_ReadIDC);
            return flag;
        }
    }
}