using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data.SqlClient;
using IOM_cs.irisDb.model;
using IOM_cs.irisDb;
using IOM_cs.irisDb.service;
using System.Threading;

namespace IOM_cs 
{
    public partial class FormLogin : Form
    {       
        public static User user = new User();
        public static FormLogin formLogin;
        IUserService iUserService = (IUserService)DbService.getEntity("IUserService");

        public FormLogin()
        {
            InitializeComponent();
            formLogin = this;

            // 设置双缓冲
            SetStyle(ControlStyles.UserPaint, true);
            SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
        }

        // 登录
        private void btn_login_Click(object sender, EventArgs e)
        {
            if (txt_userId.Text.Trim() == "") 
            {
                MessageBox.Show("用户名不能为空！");
                return;
            }
            if (txt_password.Text.Trim() == "")
            {
                MessageBox.Show("密码不能为空！");
                return;
            }
            int iRetval = -1;
            String sqlType = ConfigHelper.GetAppConfig("sqlType");
            iRetval = sqlType=="1"?_MySqlHelper.OpenDB():_SqliteHelper.OpenDB();

            if (iRetval != 0)
            {
                MessageBox.Show("登录失败，数据库异常！");
                return;
            }

            user.UserId = txt_userId.Text.Trim();
            user.Password = txt_password.Text.Trim();

            if (login(user))
            {                
                FormMain FormMain = new FormMain();
                this.Visible = false;
                FormMain.Show();
            }
            else
            {
                MessageBox.Show("登录失败，账号或密码错误！");
            }
        }

        // 取消
        private void btn_cancel_Click(object sender, EventArgs e)
        {
            try
            {
                Close();
            }
            catch (SqlException exSql)
            {
                MessageBox.Show("SqlException: " + exSql.ErrorCode);
                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show("EXCEPTION: " + ex.Message);
                Close();
            }
        }
       
        private bool login(User user)
        {
            user = iUserService.login(user);
            if (user == null)
                return false;
            else
                return true;
        }
        
    }
}