using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace SysBaseLibs
{
    public class AppEnv
    {

        // private static rsDBConn _DbConn = null;

        private static Random _random;
        private static bool _IsMachineValidated = false;

        public static int GetIntRandom()
        {
            if (_random == null)
            {
                _random = new Random(0x989680);
            }
            return _random.Next(0x989680, 0x5f5e0ff);
        }

        public static string GetRandom()
        {
            int liInt = GetIntRandom();
            return ("R" + liInt.ToString());
        }
        public static string GetNextDataTableName()
        {
            return ("T" + GetRandom());
        }

        public static DateTime CurrentTime
        {
            get
            {
                return DateTime.Now;
            }
        }

        public static string GetGUID()
        {
            return System.Guid.NewGuid().ToString("N");
        }
        public static string GetGUIDDate()
        {
            return System.Guid.NewGuid().ToString("N")+DateTime.Now.ToString("yyMMddHHmmssfff");
        }

        public static string DBConnectString
        {
            get {
              return  SysSecLibs.AppEnv.ReadConnectionString();
            }
        }

        public static bool IsMachineValidated()
        {
            bool lbRetVal = _IsMachineValidated;
            if (!lbRetVal)
            {
                lbRetVal = SysSecLibs.MySecurity.IsMachineValidated();
            }
            _IsMachineValidated = lbRetVal;
            return lbRetVal;
        }
        public static bool SaveStrToFile(string pcMessage, string pcFileName)
        {
            try
            {
                StreamWriter writer1 = new StreamWriter(pcFileName, false);
                writer1.Write(pcMessage);
                writer1.Flush();
                writer1.Close();
            }
            catch (Exception exception1)
            {
                return false;
            }
            return true;
        }
        public static bool isExist(string TableName, string ColumName, string pcNo,DBConnSql poDBConn)
        {
            string lqSql = "select * from " + TableName + "  where " + ColumName + " ='" + pcNo + "'";
            rsQuery loQuery = poDBConn.OpenQuery(lqSql);
            if (loQuery != null && loQuery.IsOpened && loQuery.RecCount > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

    }
}