package uk.ac.ebi.intenz.webapp;
   
   import java.beans.PropertyChangeListener;
   import java.beans.PropertyChangeSupport;
   import java.io.IOException;
   import java.util.Properties;
   
   import org.apache.log4j.Logger;
   
  public class IntEnzConfig implements IntEnzConfigMBean {
  
  	private static IntEnzConfig instance;
      private static Logger LOGGER = Logger.getLogger(IntEnzConfig.class);
  
      protected PropertyChangeSupport pcs;
  
  	/**
  	 * Configuration properties.
  	 * @see intenz-public.properties and intenz-public-mail.properties files.
  	 * @author rafalcan
  	 */
  	public static enum Property {
  		DATA_SOURCE("intenz.data.source.jndi.name"),
  		MBEAN_NAME("intenz.config.mbean.name"),
  		RSS_URL("intenz.rss.url"),
  		RSS_REFRESH("intenz.rss.refresh"),
  		XML_URL("intenz.xml.url"),
  		SITEMAP_URL("intenz.sitemap.url"),
          MAIL_SMTP_HOST("mail.smtp.host"),
          MAIL_FROM("intenz.mail.from"),
          CONTACT_MAIL_TO("intenz.contact.mail.to"),
          CONTACT_MAIL_SUBJECT("intenz.contact.mail.subject"),
          ERROR_MAIL_TO("intenz.error.mail.to"),
          ERROR_MAIL_SUBJECT("intenz.error.mail.subject"),
          SEARCH_PAGE_SIZE("intenz.search.page.size"),
          TEMPLATES_URL("ebi.template.service.url");
  		private String key;
          private Property(String key){ this.key = key; }
          @Override
          public String toString(){ return key; }
  	}
  
  	/**
  	 * Properties for the IntEnz public webapp configuration.
  	 */
  	private Properties appProperties;
  	private Properties mailProperties;
  	
  	private IntEnzConfig() throws IOException{
  		appProperties = new Properties();
  		appProperties.load(IntEnzConfig.class.getClassLoader()
  				.getResourceAsStream("intenz-public.properties"));
  		mailProperties = new Properties();
  		mailProperties.load(IntEnzConfig.class.getClassLoader()
  				.getResourceAsStream("intenz-public-mail.properties"));
          pcs = new PropertyChangeSupport(this);
  	}
  	
  	public static IntEnzConfig getInstance() throws IOException{
  		if (instance == null) instance = new IntEnzConfig();
  		return instance;
  	}
  	
  	public String getIntEnzDataSource(){
  		return appProperties.getProperty(Property.DATA_SOURCE.key);
  	}
  	
  	public void setIntEnzDataSource(String intEnzDataSource){
          LOGGER.info("Setting IntEnz data source to " + intEnzDataSource);
          pcs.firePropertyChange(Property.DATA_SOURCE.key,
                  appProperties.getProperty(Property.DATA_SOURCE.key),
                  intEnzDataSource);
  		appProperties.setProperty(Property.DATA_SOURCE.key, intEnzDataSource); 
          LOGGER.info("IntEnz data source set successfuly to "
                  + intEnzDataSource);
  	}
  	
  	public String getIntEnzConfigMbeanName() {
  		return appProperties.getProperty(Property.MBEAN_NAME.key);
  	}
  
  	public String getRssUrl() {
  		return appProperties.getProperty(Property.RSS_URL.key);
  	}
  
  	public void setRssUrl(String rssUrl) {
  		appProperties.setProperty(Property.RSS_URL.key, rssUrl);
  	}
  
      public long getRssRefresh(){
          return Long.parseLong(appProperties.getProperty(Property.RSS_REFRESH.key));
      }
  
      public void setRssRefresh(long fr){
          appProperties.setProperty(Property.RSS_REFRESH.key, String.valueOf(fr));
      }
  
  	public String getXmlUrl() {
  		return appProperties.getProperty(Property.XML_URL.key);
 	}
 
 	public void setXmlUrl(String xmlUrl) {
 		appProperties.setProperty(Property.XML_URL.key, xmlUrl);
 	}
 
 	public String getSitemapUrl() {
 		return appProperties.getProperty(Property.SITEMAP_URL.key);
 	}
 
 	public void setSitemapUrl(String sitemapUrl) {
 		appProperties.setProperty(Property.SITEMAP_URL.key, sitemapUrl);
 	}
 	
 	public Properties getMailProperties(){
 		return mailProperties;
 	}
 
 	public String getMailSmtpHost() {
 		return mailProperties.getProperty(Property.MAIL_SMTP_HOST.key);
 	}
 
 	public void setMailSmtpHost(String mailSmtpHost) {
 		mailProperties.setProperty(Property.MAIL_SMTP_HOST.key, mailSmtpHost);
 	}
 
 	public String getMailFrom() {
 		return mailProperties.getProperty(Property.MAIL_FROM.key);
 	}
 
 	public void setMailFrom(String mailFrom) {
 		mailProperties.setProperty(Property.MAIL_FROM.key, mailFrom);
 	}
 
 	public String getContactMailTo() {
 		return mailProperties.getProperty(Property.CONTACT_MAIL_TO.key);
 	}
 
 	public void setContactMailTo(String mailTo) {
 		mailProperties.setProperty(Property.CONTACT_MAIL_TO.key, mailTo);
 	}
 
 	public String getContactMailSubject() {
 		return mailProperties.getProperty(Property.CONTACT_MAIL_SUBJECT.key);
 	}
 
 	public void setContactMailSubject(String mailSubject) {
 		mailProperties.setProperty(Property.CONTACT_MAIL_SUBJECT.key, mailSubject);
 	}
 
 	public String getErrorMailTo() {
 		return mailProperties.getProperty(Property.ERROR_MAIL_TO.key);
 	}
 
 	public void setErrorMailTo(String mailTo) {
 		mailProperties.setProperty(Property.ERROR_MAIL_TO.key, mailTo);
 	}
 
 	public String getErrorMailSubject() {
 		return mailProperties.getProperty(Property.ERROR_MAIL_SUBJECT.key);
 	}
 
 	public void setErrorMailSubject(String mailSubject) {
 		mailProperties.setProperty(Property.ERROR_MAIL_SUBJECT.key, mailSubject);
 	}
 
 	public String getPageSize() {
 		return appProperties.getProperty(Property.SEARCH_PAGE_SIZE.key);
 	}
 
 	public void setPageSize(String pageSize) {
 		appProperties.setProperty(Property.SEARCH_PAGE_SIZE.key, pageSize);
 	}
 	
     public String getTemplatesUrl() {
 		return appProperties.getProperty(Property.TEMPLATES_URL.key);
 	}
 
 	public void setTemplatesUrl(String templatesUrl) {
 		// TODO Auto-generated method stub
 		
 	}
 
 	public void addPropertyChangeListener(String propName,
             PropertyChangeListener pcl){
         LOGGER.info("Adding listener for " + propName);
         pcs.addPropertyChangeListener(propName, pcl);
         LOGGER.info("Added listener for " + propName);
     }
 
     public void removePropertyChangeListener(String prop,
             PropertyChangeListener pcl){
         pcs.removePropertyChangeListener(prop, pcl);
     }
 
 }