/*
    * Copyright (c) 2012, Dienst Landelijk Gebied - Ministerie van Economische Zaken
    * 
    * Gepubliceerd onder de BSD 2-clause licentie, 
    * zie https://github.com/MinELenI/CBSviewer/blob/master/LICENSE.md voor de volledige licentie.
    */
   package nl.mineleni.cbsviewer.util;
   
   import java.util.Enumeration;
  import java.util.MissingResourceException;
  import java.util.PropertyResourceBundle;
  import java.util.ResourceBundle;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Resourcebundel bundle voor de applicatie.
   * 
   * @author prinsmc
   * @since 1.6
   */
  public class LabelsBundle extends ResourceBundle {
  
  	/** LOGGER. */
  	private static final Logger LOGGER = LoggerFactory
  			.getLogger(LabelsBundle.class);
  
  	/** resource bundle. */
  	private PropertyResourceBundle resBundle;
  
  	/**
  	 * Instantiates a new labels bundle.
  	 */
  
  	public LabelsBundle() {
  		try {
  			this.resBundle = (PropertyResourceBundle) PropertyResourceBundle
  					.getBundle(
  							"LabelsBundle",
  							ResourceBundle.Control
  									.getControl(ResourceBundle.Control.FORMAT_PROPERTIES));
  		} catch (final NullPointerException e) {
  			LOGGER.error("baseName of control is null.", e);
  		} catch (final MissingResourceException e) {
  			LOGGER.error(
  					"De resourcebundel (LabelsBundle.properties) is niet gevonden",
  					e);
  		} catch (final IllegalArgumentException e) {
  			LOGGER.error(
  					"ResourceBundle.Control heeft geen locale kunnen achterhalen.",
  					e);
  		}
  	}
  
  	/**
  	 * Geeft sleutel/waarde paren als een javascript OpenLayers object.
  	 * Vooralsnog wordt alleen de nl taal ondersteund.
  	 * 
  	 * @return the open layers lang bundle
  	 */
  	public String getOpenLayersLangBundle() {
  		final StringBuilder sb = new StringBuilder(
  				"\n/* <![CDATA[ */ OpenLayers.Lang.nl = OpenLayers.Util.extend({");
  		for (final Enumeration<String> keys = this.getKeys(); keys
  				.hasMoreElements();) {
  			final String key = keys.nextElement();
  			if (LOGGER.isDebugEnabled()) {
  				sb.append("\n");
  			}
  			sb.append("'");
  			sb.append(key);
  			sb.append("'");
  			sb.append(":'");
  			sb.append(this.getString(key).replaceAll("\\{[0-9]\\}*", "\\$$0"));
  			sb.append("',");
  		}
  		sb.deleteCharAt(sb.length() - 1);
  		sb.append("}, OpenLayers.Lang.nl);/* ]]> */");
  		return sb.toString();
  	}
  
  	@Override
  	public Enumeration<String> getKeys() {
  		return this.resBundle.getKeys();
  	}
  
  	@Override
  	protected Object handleGetObject(final String key) {
  		return this.resBundle.handleGetObject(key);
  	}
  }