using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using EntityDataSet;
using IntelligentControlForsx.Service.FingerSvc;
using IntelligentControlForsx.Service.WindturbineControl.IntPtrSvc;
using libzkfpcsharp;

namespace IntelligentControlForsx.ChildForms
{
    public partial class FingerCheck2 : Form
    {
        /// <summary>
        /// 记录当前登陆用户，如果当前用户为空，则控制操作需进行身份验证操作
        /// </summary>
        public static user nowUser = null;

        #region 指纹读取常用量
        bool bIsTimeToDie = false;

        IntPtr mDevHandle = IntPtr.Zero;
        IntPtr mDBHandle = IntPtr.Zero;
        IntPtr FormHandle = IntPtr.Zero;
        const int MESSAGE_CAPTURED_OK = 0x0400 + 6;

        byte[] FPBuffer;//返回图像
        private byte[] fingerTemp = new byte[2048];//指纹模板
        int fingerTempLength = 2048;//实际返回指纹模板长度

        private int mfpWidth = 0;//图片宽度
        private int mfpHeight = 0;//图片高度
        #endregion


        #region  用户名密码

        #endregion

        private UserSvc userSvc;
        //指纹验证通过的用户
        public static user checkSuccessUser = null;
        Bitmap fingerPic = null;
        private bool isNeedClose = false;
        private bool wrongUserbmp = false;

        public FingerCheck2()
        {
            InitializeComponent();

            txtPassWord.LostFocus += new EventHandler(txtPassWord_LostFocus);
            txtPassWord.GotFocus += new EventHandler(txtPassWord_GotFocus);

            this.groupBox1.Hide();
            this.cbUser.Hide();
            this.txtPassWord.Hide();
            this.btnLogin.Hide();
            this.lblClose.BringToFront();
            this.TopMost = true;
        }

        private void FingerCheck_Load(object sender, EventArgs e)
        {
            FormHandle = this.Handle;
            userSvc = UserSvc.GetUserSvc();
            userSvc.InitUser();
            FingerInit();
            StartsScanning();


        }

        private void DoCapture()
        {
            while (!bIsTimeToDie)
            {

                int ret = zkfp2.AcquireFingerprint(mDevHandle, FPBuffer, fingerTemp, ref fingerTempLength);
                if (ret == zkfp.ZKFP_ERR_OK)
                {
                    FingerReadSvc.SendMessage(FormHandle, MESSAGE_CAPTURED_OK, IntPtr.Zero, IntPtr.Zero);
                }
                else
                {
                    Thread.Sleep(1000);
                    picFinger.Image = Image.FromFile(Application.StartupPath + @"\images\finger.gif");
                }

                Thread.Sleep(200);
            }
        }

        private void FingerInit()
        {
            int ret = zkfperrdef.ZKFP_ERR_OK;
            if ((ret = zkfp2.Init()) == zkfperrdef.ZKFP_ERR_OK)
            {
                int nCount = zkfp2.GetDeviceCount();
                if (nCount <= 0)
                {
                    zkfp2.Terminate();
                    // MessageBox.Show("找不到设备，请检查指纹刷是否连接");
                }
            }
            else
            {
                //MessageBox.Show("指纹输入设备初始化失败,请检查指纹刷是否连接");
            }
        }

        /// <summary>
        /// 打开扫描
        /// </summary>
        private void StartsScanning()
        {
            Console.WriteLine("设备初始化");
            int ret = zkfp.ZKFP_ERR_OK;
            if (IntPtr.Zero == (mDevHandle = zkfp2.OpenDevice(0)))
            {
                // MessageBox.Show("打开扫描失败");
                return;
            }
            if (IntPtr.Zero == (mDBHandle = zkfp2.DBInit()))
            {
                // MessageBox.Show("打开扫描失败");
                zkfp2.CloseDevice(mDevHandle);
                mDevHandle = IntPtr.Zero;
                return;
            }


            byte[] paramValue = new byte[4];
            int size = 4;
            zkfp2.GetParameters(mDevHandle, 1, paramValue, ref size);
            zkfp2.ByteArray2Int(paramValue, ref mfpWidth);

            size = 4;
            zkfp2.GetParameters(mDevHandle, 2, paramValue, ref size);
            zkfp2.ByteArray2Int(paramValue, ref mfpHeight);

            FPBuffer = new byte[mfpWidth * mfpHeight];

            Thread captureThread = new Thread(new ThreadStart(DoCapture));
            captureThread.IsBackground = true;
            captureThread.Start();
            bIsTimeToDie = false;
        }

        protected override void DefWndProc(ref Message m)
        {
            switch (m.Msg)
            {
                case MESSAGE_CAPTURED_OK:
                    {
                        MemoryStream ms = new MemoryStream();
                        BitmapFormat.GetBitmap(FPBuffer, mfpWidth, mfpHeight, ref ms);
                        BitmapFormat.WriteBitmap(FPBuffer, mfpWidth, mfpHeight);
                        Bitmap bmp = new Bitmap(ms);
                        fingerPic = bmp;

                        user user = UserSvc.GetUserSvc().LoginUserCheck(mDBHandle, fingerTemp);
                        if (user != null)
                        {
                            checkSuccessUser = user;
                            //将读取到的图片替换动图
                            isNeedClose = true;
                            wrongUserbmp = false;
                            Thread dataGridViewThread = new Thread(this.InfoRefresh);
                            dataGridViewThread.Start();
                        }
                        else
                        {
                            picFinger.Image = bmp;
                            wrongUserbmp = true;
                            lblInfo.Text = "未识别身份，请重新录入";
                        }


                    }
                    break;

                default:
                    base.DefWndProc(ref m);
                    break;
            }
        }

        private void lblClose_Click(object sender, EventArgs e)
        {
            checkSuccessUser = null;
            bIsTimeToDie = true;
            zkfp2.Terminate();
            zkfp2.CloseDevice(mDevHandle);
            zkfp2.CloseDevice(mDBHandle);
            this.Dispose();

        }

        private delegate void UpdateMessage();

        private void InfoRefresh()
        {
            UpdateMessage del = new UpdateMessage(UpdateInfo);
            if (lblInfo.InvokeRequired)
            {
                lblInfo.BeginInvoke(del, new object[] { });
            }
        }

        private void UpdateInfo()
        {
            picFinger.Image = fingerPic;
            lblInfo.Text = checkSuccessUser.name + "，您好！验证通过！";
            zkfp2.Terminate();
            zkfp2.CloseDevice(mDevHandle);
            zkfp2.CloseDevice(mDBHandle);

        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (isNeedClose)
            {
                bIsTimeToDie = true;
                Thread.Sleep(2000);
                Console.WriteLine("已经获取到用户");
                zkfp2.Terminate();
                zkfp2.CloseDevice(mDevHandle);
                zkfp2.CloseDevice(mDBHandle);
                this.Dispose();
            }
        }

        private void BindUserCheck()
        {
            using (wisdom_cs_entity ctx = new wisdom_cs_entity())
            {
                IList<user> userList = new List<user>();
                user u = new user();
                u.id = -1;
                u.name = "请选择用户";
                userList.Add(u);
                userList = userList.Union(ctx.user.Select(s => s).ToList()).ToList();

                this.cbUser.DataSource = userList;
                this.cbUser.DisplayMember = "name";
                this.cbUser.ValueMember = "id";
                this.cbUser.SelectedValue = -1;
            }
        }

        private void btnLogin_Click(object sender, EventArgs e)
        {
            string userIdString = cbUser.SelectedValue.ToString().Trim();
            int userId = Convert.ToInt32(userIdString);

            string passWord = txtPassWord.Text.Trim();
            if (userId == -1)
            {
                lblInfo.Text = "请选择用户";
                return;
            }
            if (string.IsNullOrEmpty(passWord))
            {
                return;
            }
            user userData = null;
            using (wisdom_cs_entity ctx = new wisdom_cs_entity())
            {
                userData = ctx.user.Where(s => s.id == userId).FirstOrDefault();
            }
            if (userData == null)
            {
                lblInfo.Text = "用户名不存在";
                return;
            }
            else
            {
                if (userData.pass_word == passWord)
                {
                    checkSuccessUser = userData;
                    bIsTimeToDie = true;
                    zkfp2.Terminate();
                    zkfp2.CloseDevice(mDevHandle);
                    zkfp2.CloseDevice(mDBHandle);
                    this.Dispose();
                }
                else
                {
                    lblInfo.Text = "密码错误";
                    return;
                }
            }
        }

        private void btnPut_Click(object sender, EventArgs e)
        {
            if (btnPut.Text.Trim() == "密码验证")
            {
                picFinger.Hide();
                groupBox1.Show();
                cbUser.Show();
                txtPassWord.Show();
                btnLogin.Show();
                btnPut.Text = "指纹验证";
                lblInfo.Text = "";
                BindUserCheck();
            }
            else
            {
                picFinger.Show();
                groupBox1.Hide();
                cbUser.Hide();
                txtPassWord.Hide();
                btnLogin.Hide();
                btnPut.Text = "密码验证";
                lblInfo.Text = "请验证指纹";
            }
        }

        private void txtPassWord_MouseClick(object sender, MouseEventArgs e)
        {
            string passWord = txtPassWord.Text.Trim();
            if (passWord == "请输入密码")
            {
                txtPassWord.Text = "";
                txtPassWord.PasswordChar = '*';
            }
        }

        private void txtPassWord_GotFocus(object sender, EventArgs e)
        {
            string passWord = txtPassWord.Text.Trim();
            if (passWord == "请输入密码")
            {
                txtPassWord.Text = "";
                txtPassWord.PasswordChar = '*';
            }
        }

        private void txtPassWord_LostFocus(object sender, EventArgs e)
        {
            string passWord = txtPassWord.Text.Trim();
            if (string.IsNullOrEmpty(passWord))
            {
                txtPassWord.Text = "请输入密码";
                txtPassWord.PasswordChar = new char();
            }
        }

        private void cbUser_SelectedIndexChanged(object sender, EventArgs e)
        {
            txtPassWord.Text = "请输入密码";
            txtPassWord.PasswordChar = new char();
        }
    }
}