/**
 * 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 Thrift.Protocol;

namespace Thrift
{
	public class TApplicationException : Exception
	{
		protected ExceptionType type;

		public TApplicationException()
		{
		}

		public TApplicationException(ExceptionType type)
		{
			this.type = type;
		}

		public TApplicationException(ExceptionType type, string message)
			: base(message)
		{
			this.type = type;
		}

		public static TApplicationException Read(TProtocol iprot)
		{
			TField field;

			string message = null;
			ExceptionType type = ExceptionType.Unknown;

			while (true)
			{
				field = iprot.ReadFieldBegin();
				if (field.Type == TType.Stop)
				{
					break;
				}

				switch (field.ID)
				{
					case 1:
						if (field.Type == TType.String)
						{
							message = iprot.ReadString();
						}
						else
						{
							TProtocolUtil.Skip(iprot, field.Type);
						}
						break;
					case 2:
						if (field.Type == TType.I32)
						{
							type = (ExceptionType)iprot.ReadI32();
						}
						else
						{
							TProtocolUtil.Skip(iprot, field.Type);
						}
						break;
					default:
						TProtocolUtil.Skip(iprot, field.Type);
						break;
				}

				iprot.ReadFieldEnd();
			}

			iprot.ReadStructEnd();

			return new TApplicationException(type, message);
		}

		public void Write(TProtocol oprot)
		{
			TStruct struc = new TStruct("TApplicationException");
			TField field = new TField();

			oprot.WriteStructBegin(struc);

			if (!String.IsNullOrEmpty(Message))
			{
				field.Name = "message";
				field.Type = TType.String;
				field.ID = 1;
				oprot.WriteFieldBegin(field);
				oprot.WriteString(Message);
				oprot.WriteFieldEnd();
			}

			field.Name = "type";
			field.Type = TType.I32;
			field.ID = 2;
			oprot.WriteFieldBegin(field);
			oprot.WriteI32((int)type);
			oprot.WriteFieldEnd();
			oprot.WriteFieldStop();
			oprot.WriteStructEnd();
		}

		public enum ExceptionType
		{
			Unknown,
			UnknownMethod,
			InvalidMessageType,
			WrongMethodName,
			BadSequenceID,
			MissingResult
		}
	}
}