package org.apache.continuum.buildagent.configuration;
   
   /*
    * 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.
   */
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.io.InputStreamReader;
  
  import org.apache.continuum.buildagent.model.ContinuumBuildAgentConfigurationModel;
  import org.apache.continuum.buildagent.model.io.xpp3.ContinuumBuildAgentConfigurationModelXpp3Reader;
  import org.apache.continuum.buildagent.model.io.xpp3.ContinuumBuildAgentConfigurationModelXpp3Writer;
  import org.codehaus.plexus.util.IOUtil;
  import org.codehaus.plexus.util.StringUtils;
  import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class DefaultBuildAgentConfiguration
      implements BuildAgentConfiguration
  {
      private static final Logger log = LoggerFactory.getLogger( DefaultBuildAgentConfiguration.class );
  
      private File configurationFile;
  
      private GeneralBuildAgentConfiguration generalBuildAgentConfiguration;
  
      protected void initialize()
      {
          if ( log.isDebugEnabled() )
          {
              log.debug( "configurationFile null " + ( configurationFile.getPath() == null ) );
          }
          if ( configurationFile != null && configurationFile.exists() )
          {
              try
              {
                  reload( configurationFile );
              }
              catch ( BuildAgentConfigurationException e )
              {
                  // skip this and only log a warn
                  log.warn( " error on loading configuration from file " + configurationFile.getPath() );
              }
          }
          else
          {
              log.info( "build agent configuration file does not exists" );
              this.generalBuildAgentConfiguration = new GeneralBuildAgentConfiguration();
          }
      }
  
      public GeneralBuildAgentConfiguration getContinuumBuildAgentConfiguration()
          throws BuildAgentConfigurationException
      {
          return generalBuildAgentConfiguration;
      }
  
      public void reload()
          throws BuildAgentConfigurationException
      {
          this.initialize();
      }
  
      public void reload( File file )
          throws BuildAgentConfigurationException
      {
          FileInputStream fis = null;
          try
          {
              fis = new FileInputStream( file );
              ContinuumBuildAgentConfigurationModelXpp3Reader configurationXpp3Reader =
                  new ContinuumBuildAgentConfigurationModelXpp3Reader();
              ContinuumBuildAgentConfigurationModel configuration =
                  configurationXpp3Reader.read( new InputStreamReader( fis ) );
  
              this.generalBuildAgentConfiguration = new GeneralBuildAgentConfiguration();
              if ( StringUtils.isNotEmpty( configuration.getBuildOutputDirectory() ) )
              {
                  this.generalBuildAgentConfiguration.setBuildOutputDirectory(
                      new File( configuration.getBuildOutputDirectory() ) );
             }
             if ( StringUtils.isNotEmpty( configuration.getWorkingDirectory() ) )
             {
                 this.generalBuildAgentConfiguration.setWorkingDirectory(
                     new File( configuration.getWorkingDirectory() ) );
             }
             this.generalBuildAgentConfiguration.setContinuumServerUrl( configuration.getContinuumServerUrl() );
             this.generalBuildAgentConfiguration.setInstallations( configuration.getInstallations() );
         }
         catch ( IOException e )
         {
             log.error( e.getMessage(), e );
             throw new BuildAgentConfigurationException( e.getMessage(), e );
         }
         catch ( XmlPullParserException e )
         {
             log.error( e.getMessage(), e );
             throw new BuildAgentConfigurationException( e.getMessage(), e );
         }
         finally
         {
             if ( fis != null )
             {
                 IOUtil.close( fis );
             }
         }
     }
 
     public void save()
         throws BuildAgentConfigurationException
     {
         if ( !configurationFile.exists() )
         {
             configurationFile.getParentFile().mkdirs();
         }
         save( configurationFile );
     }
 
     public void save( File file )
         throws BuildAgentConfigurationException
     {
         try
         {
             ContinuumBuildAgentConfigurationModel configurationModel = new ContinuumBuildAgentConfigurationModel();
             if ( this.generalBuildAgentConfiguration.getBuildOutputDirectory() != null )
             {
                 configurationModel.setBuildOutputDirectory(
                     this.generalBuildAgentConfiguration.getBuildOutputDirectory().getPath() );
             }
             if ( this.generalBuildAgentConfiguration.getWorkingDirectory() != null )
             {
                 configurationModel.setWorkingDirectory(
                     this.generalBuildAgentConfiguration.getWorkingDirectory().getPath() );
             }
             configurationModel.setContinuumServerUrl( this.generalBuildAgentConfiguration.getContinuumServerUrl() );
             configurationModel.setInstallations( this.generalBuildAgentConfiguration.getInstallations() );
 
             ContinuumBuildAgentConfigurationModelXpp3Writer writer =
                 new ContinuumBuildAgentConfigurationModelXpp3Writer();
             FileWriter fileWriter = new FileWriter( file );
             writer.write( fileWriter, configurationModel );
             fileWriter.flush();
             fileWriter.close();
         }
         catch ( IOException e )
         {
             log.error( e.getMessage(), e );
             throw new BuildAgentConfigurationException( e.getMessage(), e );
         }
     }
 
     public void setContinuumBuildAgentConfiguration( GeneralBuildAgentConfiguration buildAgentConfiguration )
         throws BuildAgentConfigurationException
     {
         this.generalBuildAgentConfiguration = buildAgentConfiguration;
     }
 
     public File getConfigurationFile()
     {
         return configurationFile;
     }
 
     public void setConfigurationFile( File configurationFile )
     {
         this.configurationFile = configurationFile;
     }
 }