/*
 *
 * 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;
using System.Xml;
using log4net.Config;
using log4net.Core;
using log4net.Layout.Pattern;
using log4net.Repository;
using log4net.Tests.Appender;
using log4net.Util;
using NUnit.Framework;

namespace log4net.Tests.Util
{
	[TestFixture]
	public class PatternConverterTest
	{
		[Test]
		public void PatternLayoutConverterProperties()
		{
			XmlDocument log4netConfig = new XmlDocument();
			log4netConfig.LoadXml(@"
				<log4net>
				  <appender name=""StringAppender"" type=""log4net.Tests.Appender.StringAppender, log4net.Tests"">
					<layout type=""log4net.Layout.PatternLayout"">
						<converter>
							<name value=""propertyKeyCount"" />
							<type value=""log4net.Tests.Util.PropertyKeyCountPatternLayoutConverter, log4net.Tests"" />
							<property>
								<key value=""one-plus-one"" />
								<value value=""2"" />
							</property>
							<property>
							   <key value=""two-plus-two"" />
							   <value value=""4"" />
							</property>
						</converter>
						<conversionPattern value=""%propertyKeyCount"" />
					</layout>
				  </appender>
				  <root>
					<level value=""ALL"" />
					<appender-ref ref=""StringAppender"" />
				  </root>
				</log4net>");

			ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());
			XmlConfigurator.Configure(rep, log4netConfig["log4net"]);

			ILog log = LogManager.GetLogger(rep.Name, "PatternLayoutConverterProperties");
			log.Debug("Message");

			PropertyKeyCountPatternLayoutConverter converter =
				PropertyKeyCountPatternLayoutConverter.MostRecentInstance;
			Assert.AreEqual(2, converter.Properties.Count);
			Assert.AreEqual("4", converter.Properties["two-plus-two"]);

			StringAppender appender =
				(StringAppender)LogManager.GetRepository(rep.Name).GetAppenders()[0];
			Assert.AreEqual("2", appender.GetString());
		}

		[Test]
		public void PatternConverterProperties()
		{
			XmlDocument log4netConfig = new XmlDocument();
			log4netConfig.LoadXml(@"
				<log4net>
				  <appender name=""PatternStringAppender"" type=""log4net.Tests.Util.PatternStringAppender, log4net.Tests"">
					<layout type=""log4net.Layout.SimpleLayout"" />
					<setting>
						<converter>
							<name value=""propertyKeyCount"" />
							<type value=""log4net.Tests.Util.PropertyKeyCountPatternConverter, log4net.Tests"" />
							<property>
								<key value=""one-plus-one"" />
								<value value=""2"" />
							</property>
							<property>
							   <key value=""two-plus-two"" />
							   <value value=""4"" />
							</property>
						</converter>
						<conversionPattern value=""%propertyKeyCount"" />
					</setting>
				  </appender>
				  <root>
					<level value=""ALL"" />
					<appender-ref ref=""PatternStringAppender"" />
				  </root>
				</log4net>");

			ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());
			XmlConfigurator.Configure(rep, log4netConfig["log4net"]);

			ILog log = LogManager.GetLogger(rep.Name, "PatternConverterProperties");
			log.Debug("Message");

			PropertyKeyCountPatternConverter converter =
				PropertyKeyCountPatternConverter.MostRecentInstance;
			Assert.AreEqual(2, converter.Properties.Count);
			Assert.AreEqual("4", converter.Properties["two-plus-two"]);

			PatternStringAppender appender =
				(PatternStringAppender)LogManager.GetRepository(rep.Name).GetAppenders()[0];
			Assert.AreEqual("2", appender.Setting.Format());
		}
	}

	public class PropertyKeyCountPatternLayoutConverter : PatternLayoutConverter
	{
		private static PropertyKeyCountPatternLayoutConverter mostRecentInstance;

		public PropertyKeyCountPatternLayoutConverter()
		{
			mostRecentInstance = this;
		}

		protected override void Convert(TextWriter writer, LoggingEvent loggingEvent)
		{
			writer.Write(Properties.GetKeys().Length);
		}

		public static PropertyKeyCountPatternLayoutConverter MostRecentInstance
		{
			get { return mostRecentInstance; }
		}
	}

	public class PropertyKeyCountPatternConverter : PatternConverter
	{
		private static PropertyKeyCountPatternConverter mostRecentInstance;

		public PropertyKeyCountPatternConverter()
		{
			mostRecentInstance = this;
		}

		protected override void Convert(TextWriter writer, object state)
		{
			writer.Write(Properties.GetKeys().Length);
		}

		public static PropertyKeyCountPatternConverter MostRecentInstance
		{
			get { return mostRecentInstance; }
		}
	}

	public class PatternStringAppender : StringAppender
	{
		private static PatternStringAppender mostRecentInstace;

		private PatternString setting;

		public PatternStringAppender()
		{
			mostRecentInstace = this;
		}

		public PatternString Setting
		{
			get { return setting; }
			set { setting = value; }
		}

		public static PatternStringAppender MostRecentInstace
		{
			get { return mostRecentInstace; }
		}
	}
}