/*
    * @(#)$Id: Configuration.java 689 2009-07-22 00:10:27Z bsigner $
    *
    * Author       :   Michele Croci, mcroci@gmail.com,
    *        
    * Purpose      :   Geco configuration.
    *
    * -----------------------------------------------------------------------
    *
   * Revision Information:
   *
   * Date             Who         Reason
   *
   * Jan 24, 2007     crocimi    Initial Release
   *
   * -----------------------------------------------------------------------
   *
   * Copyright 1999-2009 ETH Zurich. All Rights Reserved.
   *
   * This software is the proprietary information of ETH Zurich.
   * Use is subject to license terms.
   * 
   */
  
  
  package org.ximtec.igesture.geco;
  
  import java.io.File;
  import java.util.List;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import org.apache.commons.configuration.ConfigurationException;
  import org.apache.commons.configuration.XMLConfiguration;
  import org.apache.commons.configuration.tree.xpath.XPathExpressionEngine;
  import org.sigtec.util.Constant;
  import org.sigtec.util.FileHandler;
  
  
  /**
   * Geco configuration.
   * 
   * @version 1.0, Jan 2008
   * @author Michele Croci, mcroci@gmail.com
   */
  public class Configuration {
  
     private static final Logger LOGGER = Logger.getLogger(Configuration.class
           .getName());
  
     private static final String ALL_INPUT_DEVICES = "inputdevices/device/@name";
     private static final String SELECTED_INPUT_DEVICE = "inputdevices/device[@selected='true']/@name";
     private static final String SELECTED_INPUT_DEVICE2 = "inputdevices/device/name";
  
     private static final String PROPERTY_DATABASE = "database";
     private static final String PROPERTY_ALGORITHM = "algorithm/class";
     private static final String PROPERTY_TAB = "tab/class";
  
     private static final String MINIMIZE = "minimize";
     private static final String LAST_PROJECT = "lastproject";
  
     private static final String TRUE = "true";
  
     private XMLConfiguration configuration;
  
  
     public Configuration(String file) {
        try {
           File confFile = FileHandler.getResource(file);
           configuration = new XMLConfiguration();
           configuration.setFileName(confFile.getPath());
           configuration.setExpressionEngine(new XPathExpressionEngine());
           configuration.setAutoSave(true);
           configuration.load();
           selectDevice();
        }
        catch (ConfigurationException e) {
           LOGGER.log(Level.SEVERE, Constant.EMPTY_STRING, e);
        }
  
     }
  
  
     /**
      * Returns the filename of the database.
      * 
      * @return the filename of the database.
      */
     public String getDatabase() {
        return configuration.getString(PROPERTY_DATABASE);
     } // getDatabase
  
  
     /**
      * Returns the list of algorithms.
      * 
      * @return the list of algorithms.
      */
     @SuppressWarnings("unchecked")
    public List<String> getAlgorithms() {
       return configuration.getList(PROPERTY_ALGORITHM);
    } // getAlgorithms
 
 
    /**
     * Returns the list of tabs.
     * 
     * @return the list of tabs.
     */
    @SuppressWarnings("unchecked")
    public List<String> getTabs() {
       return configuration.getList(PROPERTY_TAB);
    } // getTabs
 
 
    
 
    /**
     * Returns the selected input device name.
     * 
     * @return the selected input device name.
     * 
     */
    @SuppressWarnings("unchecked")
    public String getInputDeviceName() {
       List<String> list = configuration.getList(SELECTED_INPUT_DEVICE);
       if (!list.isEmpty()) {
          return list.get(0);
       }
       return null;
    } // getInputDeviceName
 
 
    /**
     * Returns the last opened project.
     * 
     * @return path of the last opened project.
     * 
     */
    @SuppressWarnings("unchecked")
    public String getMostRecentProject() {
       List<String> list = configuration.getList(LAST_PROJECT);
       if (!list.isEmpty()) {
          return list.get(0);
       }
       return null;
    } // getLastProject
 
 
    /**
     * Returns true if the value of <minimize> is true, otherwise false;
     * 
     * @return the value of <minimize>
     * 
     */
    @SuppressWarnings("unchecked")
    public boolean getMinimize() {
       List<String> list = configuration.getList(MINIMIZE);
       if (!list.isEmpty()) {
          if ((list.get(0)).equals(TRUE)) {
             return true;
          }
          else {
             return false;
          }
       }
       return false;
    } // getInputDeviceName
 
 
    /**
     * Returns all the available input devices.
     * 
     * @return the input devices.
     * 
     */
    @SuppressWarnings("unchecked")
    public List<String> getInputDevices() {
       List<String> list = configuration.getList(ALL_INPUT_DEVICES);
       return list;
    } // getInputDevices
 
 
    
 
 
    @SuppressWarnings("unchecked")
    private synchronized void selectDevice() {
       int i = 1;
 
       for (String deviceName : (List<String>)configuration
             .getList(SELECTED_INPUT_DEVICE2)) {
          // configuration.setProperty("inputdevices/device["+i+"] @selected",
          // "true");
          i++;
       }
 
    } // selectDevice
 
 }