using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Win32;
using System.Data.SqlClient;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Diagnostics;
using System.Windows.Forms;

namespace Lskj_SynchronizeData
{
    /// <summary>
    /// 数据库连接参数配置类
    /// </summary>
    public sealed class DBConfig
    {
        private static string _regKey = "AA_LS_Erp V2.0";
        private static DBConfig _instance = null;
        /// <summary>
        /// DBConfig静态单例对象
        /// </summary>
        /// <value>The instance.</value>
        public static DBConfig Instance
        {
            get
            {
                if (_instance == null)
                {
                    _instance = new DBConfig();
                    _instance.ReadConfig();
                }
                return _instance;
            }
        }

        /// <summary>
        /// 数据库名
        /// </summary>
        public string DataBase;
        /// <summary>
        /// 服务器名
        /// </summary>
        public string ServerName;
        /// <summary>
        /// 登录名
        /// </summary>
        public string LoginName;

        public string Connection1 = "QkYyNjE3QTcxQjc4RDFFMDlERjlFMDc1QkIyMDVGRjdDRUIyMEVEOUM5NjBCQjc5NTA5NzdEQTk0MkNEQTE1RTFGMEIwMThFNUJDQTE0RjE1NjQwM0U5QTYxMThCMDY2MTA4NkE2OTIxNTNBQjQ0MjRDMDIwM0Q5OEVDQjkwQTVCN0RENjJBODkxNUNGOUM5OEI5RTEzN0E3ODBERjg2OURCNEQ5QTlCMzhCQUZGQ0FBNUREMjY4M0FCODg2RTkxMDRERTQ3MjRGQTE1MERDOTJGRDFDRjY2REQ1ODYyREUzN0RGM0ZBQzc4NzJENjIwNDg4RUUyNkI3ODE1RjlDM0I0MjNCQzcyOENDN0VDMTg0QUU0MjgwMDVDMENBOUZF";

        /// <summary>
        /// <para>说明：读取注册表配置</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-08-07 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        public void ReadConfig()
        {
            RegistryKey regKey = Registry.CurrentUser;

            try
            {
                RegistryKey erpKey = regKey.CreateSubKey("AA_LS_Erp V2.0");
                erpKey.CreateSubKey("File");
            }
            catch (Exception)
            {
            }

            RegistryKey subKey = regKey.OpenSubKey(_regKey);
            subKey = subKey.OpenSubKey("File", true);

            DataBase = subKey.GetValue("datastr", "") + "";
            ServerName = subKey.GetValue("ServerName", "") + "";
            LoginName = subKey.GetValue("LoginName", "") + "";

            if (subKey.GetValue("IsCmpCapture") == null)
            {
                subKey.SetValue("IsCmpCapture", 0);
            }
        }
        
        /// <summary>
        /// <para>说明：获取C#连接字符串</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-08-07 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <returns>System.String.</returns>
        public string GetConnection()
        {
            return string.Format(AESUtil.Decrypt(Connection1), ServerName, DataBase);
        }
       
        /// <summary>
        /// <para>说明：创建数据库连接</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-08-07 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
        public bool CreateConnection()
        {
            string connStr = GetConnection();
            if (SqlHelper._connection != null)
            {
                try
                {
                    SqlHelper._connection.Close();
                    SqlHelper._connection.Dispose();
                }
                catch (Exception)
                {
                }
                SqlHelper._connection = null;
            }
            try
            {
                SqlHelper._connection = new SqlConnection(connStr);
                SqlHelper._connection.Open();

                return true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            return false;
        }
    }
}