using System;
using System.Configuration;

namespace Stella.Utility
{
	/// <summary>
	///執(zhí)行設(shè)定操作的輔助類
	/// </summary>
	/// <remarks>
	/// 該類的數(shù)據(jù)是從web.config讀取的
	/// </remarks>
	public abstract class ConfigHelper
	{
		private  ConfigHelper(){}
		
		private static string logPath;

		/// <summary>
		/// 日志路徑
		/// </summary>
		public static string LogPath
		{
			get
			{
				if(logPath==null)
					logPath= ConfigurationSettings.AppSettings["LogPath"];
				return logPath;
			}
		}

		/// <summary>
		/// 鹽值的長度
		/// </summary>
		public static int SaltLength
		{
			get{ return 4; }
		}

		private static string connString=string.Empty;
		/// <summary>
		/// 解密后的數(shù)據(jù)庫連接字符串
		/// </summary>
		public static string ConnString
		{
			get
			{
				if(connString==string.Empty)
					connString=SecurityHelper.DecryptDBConnectionString(ConfigurationSettings.AppSettings["connString"]);
				return connString;
			}
		}

		private static int themeSize;
		/// <summary>
		/// 每個版塊的頁大小
		/// </summary>
		public static int ThemeSize
		{
			get
			{
				if(themeSize==0)
					themeSize=int.Parse(ConfigurationSettings.AppSettings["ThemeSize"]); 
				return themeSize;
			}
		}

		private static int topicSize;

		/// <summary>
		/// 每個主題的頁大小
		/// </summary>
		public static int TopicSize
		{
			get
			{
				if(topicSize==0)
					topicSize=int.Parse(ConfigurationSettings.AppSettings["TopicSize"]); 
				return topicSize;
			}		
		}

		private static int userSize;
		
		/// <summary>
		/// 用戶列表的頁大小
		/// </summary>
		public static int UserSize
		{
			get
			{
				if(userSize==0)
					userSize=int.Parse(ConfigurationSettings.AppSettings["UserSize"]); 
				return userSize;
			}			
		}

		/// <summary>
		/// 生成隨機密碼需要使用的字符串
		/// </summary>
		public static string PasswordText
		{
			get{ return "abcdefghijklmnopqrstuvwxyz0123456789";}
		}

		/// <summary>
		/// 隨機密碼的長度
		/// </summary>
		public static int PasswordLength
		{
			get{return 10;}
		}

	}
}