using LB_SmartVisionCommon;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Forms;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using MessageBox = System.Windows.Forms.MessageBox;

namespace LB_SmartVisionLoginUI
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        /// <summary>
        /// 调用Windows的API库user32.dll中的消息发送机制，可实现跨程序数据发送
        /// </summary>
        /// <param name="hwnd"></param>
        /// <param name="wMsg"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <returns></returns>
        [DllImport("user32.dll", EntryPoint = "SendMessageA")]
        public static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);
        /// <summary>
        /// 当前登录的用户名，也需要共享给整个工程
        /// </summary>
        public static string userName;//
        /// <summary>
        /// 用户密码
        /// </summary>
        private static string userPassword;
        /// <summary>
        /// 是否退出
        /// </summary>
        public bool isQuit = false;
        /// <summary>
        /// 当前用户
        /// </summary>
        public  bool correctUser = false;
        /// <summary>
        /// 是否登出
        /// </summary>
        public bool login_on_off = false;


        private MainWindow()
        {
            InitializeComponent();
            correctUser = false;
        }

        private static MainWindow instanceLoginandConfirmation = null;
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public static MainWindow InstanceLoginandConfirmation()
        {
            if (instanceLoginandConfirmation == null)
            {
                instanceLoginandConfirmation = new MainWindow();
            }
            return instanceLoginandConfirmation;
        }

        /// <summary>
        /// 关闭
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void test_Close(object sender, MouseButtonEventArgs e)
        {
            correctUser = false;
            isQuit = true;
            this.Close();
        }

        /// <summary>
        /// 最小化
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void test_Min(object sender, MouseButtonEventArgs e)
        {
            this.WindowState = WindowState.Minimized;
        }

        private void Btn_Cancel_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
            try
            {
                Process[] processes = System.Diagnostics.Process.GetProcesses(); //获得所有进程
                foreach (Process p in processes)
                {
                    if (p.ProcessName == "ShockPadMeasurementSystem" && p.StartTime < DateTime.Now.AddMilliseconds(-300))
                    {
                        p.Kill();
                    }
                }
            }
            catch { }
        }

        private void Btn_KeyBoard_Click(object sender, RoutedEventArgs e)
        {
            System.Diagnostics.Process.Start(@"C:\WINDOWS\system32\osk.exe");
        }

        private void Btn_Login_Click(object sender, RoutedEventArgs e)
        {
            login_on_off = true;
            loginon();
            // 在此处添加事件处理程序实现。
            if (correctUser)//如果用户名密码正确，合法登录，则获得当前用户名和级别。同时关闭登录窗体
            {
                userName = this.Txt_UserName.Text.Trim().ToLower();
                userPassword = this.Txt_UserPassWord.Password;
                //closeLoginFrm();
                this.Hide();
            }
        }

        private void loginon()
        {
            if (!UserManager.Instance.Login(this.Txt_UserName.Text.Trim(), this.Txt_UserPassWord.Password))
            {
                MessageBox.Show("请输入正确的用户名和密码.",
                    "登录失败!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                correctUser = false;
                return;
            }
            else// Valid user, pass the authentication
            {
                userName = this.Txt_UserName.Text.Trim();
                userPassword = this.Txt_UserPassWord.Password;
                correctUser = true;
                isQuit = false;
            }
        }
        /// <summary>
        /// 关闭
        /// </summary>
        public void closeLoginFrm()
        {
            this.ShowInTaskbar = false;//点击登录后去掉任务栏图标
            instanceLoginandConfirmation = null;
            this.Close();
        }

        private void Txt_UserPassWord_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
        {
            if (e.Key== Key.Enter)
            {
                login_on_off = true;
                loginon();
                // 在此处添加事件处理程序实现。
                if (correctUser)
                {
                    userName = this.Txt_UserName.Text.Trim().ToLower();
                    userPassword = this.Txt_UserPassWord.Password;
                    isQuit = false;
                    //closeLoginFrm();
                }
            }
            else if (e.Key == Key.Escape)
            {
                correctUser = false;
                isQuit = true;
                this.Close();
            }
        }

        private void Window_Closing(object sender, CancelEventArgs e)
        {
            this.Txt_UserName.Text = "";
            this.Txt_UserPassWord.Password = "";
        }
    }
}