using System;
using System.Configuration;
using Csla;
using System.Data.SqlClient;
using System.IO;

namespace Volian.Object.Library
{
	public static class Database
	{
		#region Log4Net
		private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		#endregion
		public static string VEPROMS_Connection
		{
			get
			{
				DateTime.Today.ToLongDateString();
				ConnectionStringSettings cs = ConfigurationManager.ConnectionStrings["VEPROMS"];
				if (cs == null)
				{
					throw new ApplicationException("Database.cs Could not find connection VEPROMS");
				}
				return cs.ConnectionString;
			}
		}
		public static SqlConnection VEPROMS_SqlConnection
		{
			get
			{
				string strConn = VEPROMS_Connection; // If failure - Fail (Don't try to catch)
				// Attempt to make a connection 
				try
				{
					SqlConnection cn = new SqlConnection(strConn);
					cn.Open();
					return cn;
				}
				catch (SqlException exsql)
				{
					const string strAttachError = "An attempt to attach an auto-named database for file ";
					if (exsql.Message.StartsWith(strAttachError))
					{// Check to see if the file is missing
						string sFile = exsql.Message.Substring(strAttachError.Length);
						sFile = sFile.Substring(0, sFile.IndexOf(" failed"));
						//	"An attempt to attach an auto-named database for file <mdf file> failed"
						if (strConn.ToLower().IndexOf("user instance=true") < 0)
						{
							throw new ApplicationException("Connection String missing attribute: User Instance=True");
						}
						if (File.Exists(sFile))
						{
							throw new ApplicationException("Database file " + sFile + " Cannot be opened\r\n", exsql);
						}
						else
						{
							throw new FileNotFoundException("Database file " + sFile + " Not Found", exsql);
						}
					}
					else
					{
						throw new ApplicationException("Failure on Connect", exsql);
					}
				}
				catch (Exception ex)// Throw Application Exception on Failure
				{
					if (log.IsErrorEnabled) log.Error("Connection Error", ex);
					throw new ApplicationException("Failure on Connect", ex);
				}
			}
		}
		public static void LogException(string s,Exception ex)
		{
			log.Error(s,ex);
			int i = 0;
			Console.WriteLine("Error - {0}", s);
			for (; ex != null; ex = ex.InnerException)
			{
				Console.WriteLine("{0}{1} - {2}", "".PadLeft(i * 2), ex.GetType().ToString(), ex.Message);
			}
		}
	}
}