/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System;
using System.IO;

namespace Apache.NMS.Stomp.Commands
{
	public struct StackTraceElement
	{
		public string ClassName;
		public string FileName;
		public string MethodName;
		public int LineNumber;
	}

	/// <summary>
	/// Represents an exception on the broker
	/// </summary>
	[Serializable]
	public class BrokerError : BaseCommand
	{
		private string message;
		private string exceptionClass;
		private StackTraceElement[] stackTraceElements = { };
		private BrokerError cause;

		public override byte GetDataStructureType()
		{
			return DataStructureTypes.ErrorType;
		}

		public string Message
		{
			get { return message; }
			set { message = value; }
		}

		public string ExceptionClass
		{
			get { return exceptionClass; }
			set { exceptionClass = value; }
		}

		public StackTraceElement[] StackTraceElements
		{
			get { return stackTraceElements; }
			set { stackTraceElements = value; }
		}

		public BrokerError Cause
		{
			get { return cause; }
			set { cause = value; }
		}

		public String StackTrace
		{
			get
			{
				StringWriter writer = new StringWriter();
				PrintStackTrace(writer);
				return writer.ToString();
			}
		}

		public void PrintStackTrace(TextWriter writer)
		{
			writer.WriteLine(exceptionClass + ": " + message);
			for(int i = 0; i < stackTraceElements.Length; i++)
			{
				StackTraceElement element = stackTraceElements[i];
				writer.WriteLine("    at " + element.ClassName + "." + element.MethodName + "(" + element.FileName + ":" + element.LineNumber + ")");
			}

			if(cause != null)
			{
				writer.WriteLine("Nested Exception:");
				cause.PrintStackTrace(writer);
			}
		}
	}
}