/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.platform.plugin.action.defaultcontent;

import org.pentaho.platform.api.engine.IPentahoSession;
import org.pentaho.platform.api.engine.IPentahoSystemListener;
import org.pentaho.platform.api.engine.ISystemConfig;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.engine.security.SecurityHelper;
import org.pentaho.platform.plugin.services.importer.ArchiveLoader;
import org.pentaho.platform.plugin.services.importer.IPlatformImporter;
import org.pentaho.platform.util.logging.Logger;

import java.io.File;
import java.util.concurrent.Callable;

public class DefaultContentSystemListener implements IPentahoSystemListener {

  private static final String DEFAULT_CONTENT_FOLDER = "system/default-content";

  @Override
  public void shutdown() {
  }

  @Override
  public boolean startup( IPentahoSession arg0 ) {

    // By default we'll run in a separate thread. This checks to see if someone has disabled this.
    ISystemConfig systemSettings = PentahoSystem.get( ISystemConfig.class );
    Boolean enableAsyncLoading = true;
    if( systemSettings != null ) {
      String disableLoadAsyncStr = systemSettings.getProperty( "system.enable-async-default-content-loading" );
      enableAsyncLoading = Boolean.valueOf( disableLoadAsyncStr );
    }

    Runnable runnable = new Runnable() {
      @Override public void run() {
        try {
          SecurityHelper.getInstance().runAsSystem( new Callable<Void>() {

            @Override
            public Void call() throws Exception {
              Logger.info( this.getClass().getName(), "Default content importer has started" );

              // get a File reference to the directory
              String solutionPath = PentahoSystem.getApplicationContext().getSolutionPath( DEFAULT_CONTENT_FOLDER );
              File directory = new File( solutionPath );

              // Instantiate the importer
              IPlatformImporter importer = PentahoSystem.get( IPlatformImporter.class );
              ArchiveLoader archiveLoader = new ArchiveLoader( importer );
              archiveLoader.loadAll( directory, ArchiveLoader.ZIPS_FILTER );
              return null;
            }
          } );
        } catch ( Exception e ) {
          Logger.error( this.getClass().getName(), e.getMessage() );
        }
      }
    };
    if( enableAsyncLoading ) {
      Thread t = new Thread( runnable );
      t.setDaemon( true );
      t.setName( "Default Content Loader Thread" );
      t.start();
    } else {
      runnable.run();
    }
    return true;
  }
}