/*
    * FCKeditor - The text editor for Internet - http://www.fckeditor.net
    * Copyright (C) 2004-2009 Frederico Caldeira Knabben
    * 
    * == BEGIN LICENSE ==
    * 
    * Licensed under the terms of any of the following licenses at your
    * choice:
    * 
   *  - GNU General Public License Version 2 or later (the "GPL")
   *    http://www.gnu.org/licenses/gpl.html
   * 
   *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
   *    http://www.gnu.org/licenses/lgpl.html
   * 
   *  - Mozilla Public License Version 1.1 or later (the "MPL")
   *    http://www.mozilla.org/MPL/MPL-1.1.html
   * 
   * == END LICENSE ==
   */
  package net.fckeditor.handlers;
  
  import java.io.BufferedInputStream;
  import java.io.InputStream;
  import java.util.Properties;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Manages FCKeditor.Java properties files.
   * <p>
   * It manages/loads the properties files in the following order:
   * <ol>
   * <li>the default properties as defined <a
   * href="http://java.fckeditor.net/properties.html">here</a>,
   * <li>the user-defined properties (<code>fckeditor.properties</code>) if
   * present.
   * </ol>
   * This means that user-defined properties <em>override</em> default ones. In
   * the backend it utilizes the regular {@link Properties} class.
   * </p>
   * <p>
   * Moreover, you can set properties programmatically too but make sure to
   * override them <em>before</em> the first call of that specific property.
   * 
   * @version $Id: PropertiesLoader.java 3695 2009-06-18 20:18:38Z mosipov $
   */
  public class PropertiesLoader {
  	private static final Logger logger = LoggerFactory
  			.getLogger(PropertiesLoader.class);
  	private static final String DEFAULT_FILENAME = "default.properties";
  	private static final String LOCAL_PROPERTIES = "/fckeditor.properties";
  	private static Properties properties = new Properties();
  
  	static {
  
  		// 1. load library defaults
  		InputStream in = PropertiesLoader.class
  				.getResourceAsStream(DEFAULT_FILENAME);
  
  		if (in == null) {
  			logger.error("{} not found", DEFAULT_FILENAME);
  			throw new RuntimeException(DEFAULT_FILENAME + " not found");
  		} else {
  			if (!(in instanceof BufferedInputStream))
  				in = new BufferedInputStream(in);
  
  			try {
  				properties.load(in);
  				in.close();
  				logger.debug("{} loaded", DEFAULT_FILENAME);
  			} catch (Exception e) {
  				logger.error("Error while processing {}", DEFAULT_FILENAME);
  				throw new RuntimeException("Error while processing "
  						+ DEFAULT_FILENAME, e);
  			}
  		}
  
  		// 2. load user defaults if present
  		InputStream in2 = PropertiesLoader.class
  				.getResourceAsStream(LOCAL_PROPERTIES);
  
  		if (in2 == null) {
  			logger.info("{} not found", LOCAL_PROPERTIES);
  		} else {
  
  			if (!(in2 instanceof BufferedInputStream))
  				in2 = new BufferedInputStream(in2);
  
  			try {
  				properties.load(in2);
  				in2.close();
  				logger.debug("{} loaded", LOCAL_PROPERTIES);
  			} catch (Exception e) {
  				logger.error("Error while processing {}", LOCAL_PROPERTIES);
  				throw new RuntimeException("Error while processing "
  						+ LOCAL_PROPERTIES, e);
  			}
 
 		}
 	}
 
 	/**
 	 * Searches for the property with the specified key in this property list.
 	 * 
 	 * @see Properties#getProperty(String)
 	 */
 	public static String getProperty(final String key) {
 		return properties.getProperty(key);
 	}
 
 	/**
 	 * Sets the property with the specified key in this property list.
 	 * 
 	 * @see Properties#setProperty(String, String)
 	 */
 	public static void setProperty(final String key, final String value) {
 		properties.setProperty(key, value);
 	}
 
 	/**
 	 * Returns <code>fckeditor.toolbarSet</code> property
 	 */
 	public static String getEditorToolbarSet() {
 		return properties.getProperty("fckeditor.toolbarSet");
 	}
 
 	/**
 	 * Returns <code>fckeditor.width</code> property
 	 */
 	public static String getEditorWidth() {
 		return properties.getProperty("fckeditor.width");
 	}
 
 	/**
 	 * Returns <code>fckeditor.height</code> property
 	 */
 	public static String getEditorHeight() {
 		return properties.getProperty("fckeditor.height");
 	}
 
 	/**
 	 * Returns <code>fckeditor.basePath</code> property
 	 */
 	public static String getEditorBasePath() {
 		return properties.getProperty("fckeditor.basePath");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.file.path</code> property
 	 */
 	public static String getFileResourceTypePath() {
 		return properties.getProperty("connector.resourceType.file.path");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.flash.path</code> property
 	 */
 	public static String getFlashResourceTypePath() {
 		return properties.getProperty("connector.resourceType.flash.path");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.image.path</code> property
 	 */
 	public static String getImageResourceTypePath() {
 		return properties.getProperty("connector.resourceType.image.path");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.media.path</code> property
 	 */
 	public static String getMediaResourceTypePath() {
 		return properties.getProperty("connector.resourceType.media.path");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.file.extensions.allowed</code>
 	 * property
 	 */
 	public static String getFileResourceTypeAllowedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.file.extensions.allowed");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.file.extensions.denied</code>
 	 * property
 	 */
 	public static String getFileResourceTypeDeniedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.file.extensions.denied");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.flash.extensions.allowed</code>
 	 * property
 	 */
 	public static String getFlashResourceTypeAllowedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.flash.extensions.allowed");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.flash.extensions.denied</code>
 	 * property
 	 */
 	public static String getFlashResourceTypeDeniedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.flash.extensions.denied");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.image.extensions.allowed</code>
 	 * property
 	 */
 	public static String getImageResourceTypeAllowedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.image.extensions.allowed");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.image.extensions.denied</code>
 	 * property
 	 */
 	public static String getImageResourceTypeDeniedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.image.extensions.denied");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.media.extensions.allowed</code>
 	 * property
 	 */
 	public static String getMediaResourceTypeAllowedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.media.extensions.allowed");
 	}
 
 	/**
 	 * Returns <code>connector.resourceType.media.extensions.denied</code>
 	 * property
 	 */
 	public static String getMediaResourceTypeDeniedExtensions() {
 		return properties
 				.getProperty("connector.resourceType.media.extensions.denied");
 	}
 
 	/**
 	 * Returns <code>connector.userFilesPath</code> property
 	 */
 	public static String getUserFilesPath() {
 		return properties.getProperty("connector.userFilesPath");
 	}
 
 	/**
 	 * Returns <code>connector.userFilesAbsolutePath</code> property
 	 */
 	public static String getUserFilesAbsolutePath() {
 		return properties.getProperty("connector.userFilesAbsolutePath");
 	}
 
 	/**
 	 * Returns <code>connector.forceSingleExtension</code> property
 	 */
 	public static boolean isForceSingleExtension() {
 		return Boolean.valueOf(properties
 				.getProperty("connector.forceSingleExtension"));
 	}
 
 	/**
 	 * Returns <code>connector.secureImageUploads</code> property
 	 */
 	public static boolean isSecureImageUploads() {
 		return Boolean.valueOf(properties
 				.getProperty("connector.secureImageUploads"));
 	}
 
 	/**
 	 * Returns <code>connector.impl</code> property
 	 */
 	public static String getConnectorImpl() {
 		return properties.getProperty("connector.impl");
 	}
 
 	/**
 	 * Returns <code>connector.userActionImpl</code> property
 	 */
 	public static String getUserActionImpl() {
 		return properties.getProperty("connector.userActionImpl");
 	}
 
 	/**
 	 * Returns <code>connector.userPathBuilderImpl</code> property
 	 */
 	public static String getUserPathBuilderImpl() {
 		return properties.getProperty("connector.userPathBuilderImpl");
 	}
 
 	/**
 	 * Returns <code>connector.localeResolverImpl</code> property
 	 */
 	public static String getLocaleResolverImpl() {
 		return properties.getProperty("localization.localeResolverImpl");
 	}
 }