/*!
* 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.reporting.libraries.pensol.vfs;

import org.apache.commons.vfs2.FileName;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.provider.AbstractFileName;
import org.apache.commons.vfs2.provider.AbstractFileSystem;
import org.pentaho.reporting.libraries.pensol.PentahoSolutionFileProvider;
import org.pentaho.reporting.libraries.pensol.SolutionFileModel;
import org.pentaho.reporting.libraries.pensol.WebSolutionFileObject;

import java.util.Collection;

public class WebSolutionFileSystem extends AbstractFileSystem {
  private XmlSolutionFileModel solutionFileModel;
  public static final String LAST_REFRESH_TIME_ATTRIBUTE = "lastRefreshTime";
  public static final String MAJOR_VERSION = "version-major";
  public static final String MINOR_VERSION = "version-minor";
  public static final String RELEASE_VERSION = "version-release";
  public static final String MILESTONE_VERSION = "version-milestone";
  public static final String BUILD_VERSION = "version-build";

  public WebSolutionFileSystem( final FileName rootName,
                                final FileSystemOptions fileSystemOptions,
                                final XmlSolutionFileModel solutionFileModel ) {
    super( rootName, null, fileSystemOptions );

    this.solutionFileModel = solutionFileModel;
  }

  /**
   * Creates a file object.  This method is called only if the requested file is not cached.
   */
  protected FileObject createFile(final AbstractFileName name) throws Exception
  {
    return new WebSolutionFileObject(name, this, solutionFileModel);
  }

  /**
   * Adds the capabilities of this file system.
   */
  protected void addCapabilities( final Collection caps ) {
    caps.addAll( PentahoSolutionFileProvider.capabilities );
  }

  public SolutionFileModel getLocalFileModel() {
    return solutionFileModel;
  }

  /**
   * Retrieves the attribute with the specified name. The default implementation simply throws an exception.
   */
  public Object getAttribute( final String attrName ) throws FileSystemException {
    if ( LAST_REFRESH_TIME_ATTRIBUTE.equals( attrName ) ) {
      return Long.valueOf( solutionFileModel.getRefreshTime() );
    }
    if ( MAJOR_VERSION.equals( attrName ) ) {
      return ( solutionFileModel.getMajorVersion() );
    }
    if ( MINOR_VERSION.equals( attrName ) ) {
      return ( solutionFileModel.getMinorVersion() );
    }
    if ( BUILD_VERSION.equals( attrName ) ) {
      return ( solutionFileModel.getBuildVersion() );
    }
    if ( RELEASE_VERSION.equals( attrName ) ) {
      return ( solutionFileModel.getReleaseVersion() );
    }
    if ( MILESTONE_VERSION.equals( attrName ) ) {
      return ( solutionFileModel.getMilestoneVersion() );
    }
    return null;
  }
}