//
// System.Data.SqlClient.SqlException.cs
//
// Author:
//   Rodrigo Moya (rodrigo@ximian.com)
//   Daniel Morgan (danmorg@sc.rr.com)
//   Tim Coleman (tim@timcoleman.com)
//
// (C) Ximian, Inc
// Copyright (C) Tim Coleman, 2002
//

//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using Mono.Data.Tds.Protocol;
using System;
using System.ComponentModel;
using System.Data;
using System.Data.Common;
using System.Runtime.Serialization;
using System.Text;

namespace System.Data.SqlClient {
	[SerializableAttribute()]

	public sealed class SqlException
#if NET_2_0
	 : DbException
#else
	 : SystemException
#endif //NET_1_1
	{
		#region Fields

		private SqlErrorCollection errors; 
		private const string DEF_MESSAGE	= "SQL Exception has occured.";

		#endregion // Fields

		#region Constructors

		internal SqlException () 
			: this (DEF_MESSAGE, null, null) 
		{
		}
		
		internal SqlException (string message, Exception inner)
			: this (message, inner, null)
		{
		}

		internal SqlException (string message, Exception inner, SqlError sqlError)
			: base (message == null ? DEF_MESSAGE : message, inner)
		{
			errors = new SqlErrorCollection ();
			if (sqlError != null)
				errors.Add (sqlError);
		}

		internal SqlException (byte theClass, int lineNumber, string message, int number, string procedure, string server, string source, byte state) 
			: this (null, 
				null, 
				new SqlError (theClass, lineNumber, message, 
					      number, procedure, server, source, 
					      state)) 
		{
		}
		
		private SqlException(SerializationInfo si, StreamingContext sc)
		{
			errors = (SqlErrorCollection)si.GetValue("Errors", typeof(SqlErrorCollection));
		}

		#endregion // Constructors

		#region Properties

		public byte Class {
			get { return Errors [0].Class; }
		}

		[DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
		public SqlErrorCollection Errors {
			get { return errors; }
		}

		public int LineNumber {
			get { return Errors [0].LineNumber; }
		}
		
		public override string Message 	{
			get {
				if (Errors.Count == 0)
					return base.Message;
				StringBuilder result = new StringBuilder ();
				if (base.Message != DEF_MESSAGE) {
					result.Append (base.Message);
					result.Append ("\n");
				}
				for (int i=0; i < Errors.Count -1; i++) {
					result.Append (Errors [i].Message);
					result.Append ("\n");
				}
				if (Errors.Count > 0)
					result.Append (Errors [Errors.Count - 1].Message);
				return result.ToString ();
			}
		}
		
		public int Number {
			get { return Errors [0].Number; }
		}
		
		public string Procedure {
			get { return Errors [0].Procedure; }
		}

		public string Server {
			get { return Errors [0].Server; }
		}
		
		public override string Source {
			get { return Errors [0].Source; }
		}

		public byte State {
			get { return Errors [0].State; }
		}

		#endregion // Properties

		#region Methods


		internal static SqlException FromTdsInternalException (TdsInternalException e)
		{
			return FromTdsInternalException (null, e);
		}

		internal static SqlException FromTdsInternalException (string message, 
								       TdsInternalException e)
		{
			SqlError sqlError = new SqlError (e.Class, e.LineNumber, e.Message, 
							  e.Number, e.Procedure, e.Server, 
							  "Mono SqlClient Data Provider", e.State);
			return new SqlException (message, e, sqlError);
		}

		public override void GetObjectData (SerializationInfo si, StreamingContext context) 
		{
			if (si == null)
				throw new ArgumentNullException ("si");

			si.AddValue ("Errors", errors, typeof(SqlErrorCollection));
			base.GetObjectData (si, context);
		}

		#endregion // Methods
	}
}