#region Apache License
//
// 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.
//
#endregion

using System;
using System.Collections;
using log4net.Appender;
using log4net.Layout;
using log4net.Util;

namespace SampleAppendersApp.Appender;

/// <summary>
/// 
/// </summary>
/// <example>
/// <code>
/// <![CDATA[
///   <appender name="PatternLayoutAdoNetAppender" type="ConsoleApplication1.PatternLayoutAdoNetAppender, ConsoleApplication1">
///   <connectionType value="log4net.Tests.Appender.AdoNet.Log4NetConnection, log4net.Tests" />
///   <connectionString value="..." />
///   <commandText value="INSERT INTO Log4Net (CustomValue1, CustomValue2) VALUES (@CustomValue1, @CustsomValue2)" />
///   <converter>
///    <name value="echo" />
///     <type value="ConsoleApplication1.EchoConverter, ConsoleApplication1" />
///   </converter>
///   <converter>
///     <name value="reverse" />
///     <type value="ConsoleApplication1.ReverseConverter, ConsoleApplication1" />
///   </converter>
///   <patternLayoutParameter>
///     <parameterName value="@CustomValue1"/>
///     <dbType value="String" />
///     <conversionPattern value="%echo{Hello World}" />
///   </patternLayoutParameter>
///   <patternLayoutParameter>
///     <parameterName value="@CustomValue2"/>
///     <dbType value="String" />
///     <conversionPattern value="%reverse{Goodbye}" />
///   </patternLayoutParameter>
///   </appender>
/// ]]>
/// </code>
/// </example>
public sealed class PatternLayoutAdoNetAppender : AdoNetAppender
{
  private readonly ArrayList _converters = [];

  /// <inheritdoc/>
  public void AddConverter(ConverterInfo converterInfo) => _converters.Add(converterInfo);

  /// <inheritdoc/>
  public void AddPatternLayoutParameter(PatternLayoutAdoNetAppenderParameter parameter)
  {
    ArgumentNullException.ThrowIfNull(parameter);
    PatternLayout patternLayout = new(parameter.ConversionPattern);
    AddConveters(patternLayout);
    patternLayout.ActivateOptions();

    parameter.Layout = new Layout2RawLayoutAdapter(patternLayout);
    m_parameters.Add(parameter);
  }

  private void AddConveters(PatternLayout patternLayout)
  {
    foreach (ConverterInfo conveterInfo in _converters)
    {
      patternLayout.AddConverter(conveterInfo);
    }
  }
}