using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text;

namespace BPASmartClient.Argox
{
    public class ArgoxHelper
    {

        private volatile static ArgoxHelper _Instance;
        public static ArgoxHelper GetInstance => _Instance ?? (_Instance = new ArgoxHelper());
        private ArgoxHelper() { }

        public void Print()
        {
            int nLen, ret, sw;
            byte[] pbuf = new byte[128];
            string strmsg;
            IntPtr ver;
            System.Text.Encoding encAscII = System.Text.Encoding.ASCII;
            System.Text.Encoding encUnicode = System.Text.Encoding.Unicode;

            // dll 版本.
            ver = DLLHelper.B_Get_DLL_Version(0);

            // 搜索端口号.
            nLen = DLLHelper.B_GetUSBBufferLen() + 1;
            strmsg = "DLL ";
            strmsg += Marshal.PtrToStringAnsi(ver);
            strmsg += "\r\n";
            if (nLen > 1)
            {
                byte[] buf1, buf2;
                int len1 = 128, len2 = 128;
                buf1 = new byte[len1];
                buf2 = new byte[len2];
                DLLHelper.B_EnumUSB(pbuf);
                DLLHelper.B_GetUSBDeviceInfo(1, buf1, out len1, buf2, out len2);
                sw = 1;
                if (1 == sw)
                {
                    ret = DLLHelper.B_CreatePrn(12, encAscII.GetString(buf2, 0, len2));// 打开 USB.
                }
                else
                {
                    ret = DLLHelper.B_CreateUSBPort(1);// must call B_GetUSBBufferLen() function fisrt.
                }
                if (0 != ret)
                {
                    strmsg += "Open USB fail!";
                }
                else
                {
                    strmsg += "Open USB:\r\nDevice name: ";
                    strmsg += encAscII.GetString(buf1, 0, len1);
                    strmsg += "\r\nDevice path: ";
                    strmsg += encAscII.GetString(buf2, 0, len2);
                    //sw = 2;
                    if (2 == sw)
                    {
                        //Immediate Error Report.
                        DLLHelper.B_WriteData(1, encAscII.GetBytes("^ee\r\n"), 5);//^ee
                        ret = DLLHelper.B_ReadData(pbuf, 4, 1000);
                    }
                }
            }
            else
            {
                System.IO.Directory.CreateDirectory(DLLHelper.szSavePath);
                ret = DLLHelper.B_CreatePrn(0, DLLHelper.szSaveFile);// open file.
                strmsg += "Open ";
                strmsg += DLLHelper.szSaveFile;
                if (0 != ret)
                {
                    strmsg += " file fail!";
                }
                else
                {
                    strmsg += " file succeed!";
                }
            }
            Debug.WriteLine(strmsg);
            if (0 != ret)
                return;

            // 样品设置.
            DLLHelper.B_Set_DebugDialog(0);
            DLLHelper.B_Set_Originpoint(0, 0);
            DLLHelper.B_Select_Option(2);
            DLLHelper.B_Set_Darkness(8);
            DLLHelper.B_Del_Pcx("*");// delete all picture.
            DLLHelper.B_WriteData(0, encAscII.GetBytes(DLLHelper.sznop2), DLLHelper.sznop2.Length);
            DLLHelper.B_WriteData(1, encAscII.GetBytes(DLLHelper.sznop1), DLLHelper.sznop1.Length);
            DLLHelper.B_Set_LabelForSmartPrint(254 * 3, 30);//label information: length= 3 * 25.4 mm, gap= 3 mm.

            int TextX = 160;
            int BoxX = 150;
            DLLHelper.B_Draw_Box(BoxX, 20, 4, 670, 370);//画框
            DLLHelper.B_Prn_Text_TrueType(TextX, 40, 30, "楷体", 1, 400, 0, 0, 0, "AA", $"原料名称：榨菜配方");
            DLLHelper.B_Prn_Text_TrueType_W(TextX, 80, 30, 20, "楷体", 1, 400, 0, 0, 0, "AB", $"日期：{DateTime.Now.ToString("yyy-MM-dd")}");
            DLLHelper.B_Prn_Text_TrueType_Uni(TextX, 120, 30, "楷体", 1, 400, 0, 0, 0, "AC", Encoding.Unicode.GetBytes($"时间：{DateTime.Now.ToString("HH:mm:ss")}"), 1);//UTF-16
            DLLHelper.B_Print_Out(1);//打印数量
            DLLHelper.B_ClosePrn();
        }
    }
}