package org.musicontroller.gui.components;
   
   import org.acegisecurity.context.HttpSessionContextIntegrationFilter;
   import org.acegisecurity.context.SecurityContext;
   import org.apache.hivemind.util.PropertyUtils;
   import org.apache.log4j.Logger;
   import org.apache.tapestry.BaseComponent;
   import org.apache.tapestry.IPage;
   import org.apache.tapestry.IRequestCycle;
  import org.apache.tapestry.web.WebSession;
  import org.musicontroller.DJ;
  import org.musicontroller.core.Contract_PS;
  import org.musicontroller.dao.Dao;
  import org.musicontroller.dao.PlaylistKey;
  import org.musicontroller.security.User;
  import org.musicontroller.streaming.StreamMaster;
  import org.varienaja.util.DateTools;
  
  /**
   * @author Arjan Verstoep
   * @version $Id: Border.java,v 1.1 2010/03/16 18:55:42 varienaja Exp $
   */
  
  public abstract class Border extends BaseComponent {
  	private static final Logger log = Logger.getLogger(Border.class);
  	
  	public abstract String getSongName();
  	public abstract void setSongName(String name);
  	public abstract String getSearchString();
  	public abstract void setSearchString(String searchstring);	
  	public abstract Dao getDao();
  	public abstract User getUser();
  	
  	public void showSuggestions(IRequestCycle cycle, String query) {
  		IPage page = cycle.getPage("Suggestions");
  		PropertyUtils.write(page,"query",query);
  		cycle.activate(page);
  	}
  		
  	public void doRequest(IRequestCycle cycle, long songid) {
  		User user = getUser(); 
  		if(user==null) {
  			log.debug("No user logged in, ignoring request command.");
  			return;
  		}
  		DJ dj = StreamMaster.getDJByUser(user.getId());
  		if (dj==null) {
  			log.debug("Song (un)request received but not logged in. Request ignored.");
  			return;
  		}
  		if (songid>0) {
  			log.debug("Song requested by user: "+dj.getUser().getName()+"("+dj.getUser().getId()+")"+", songid: "+songid);
  			dj.requestSong(songid);
  		} else {
  			songid = -songid; //make negative songid positive
  			log.debug("Song unrequested by user: "+dj.getUser().getName()+"("+dj.getUser().getId()+")"+", songid: "+songid);
  			dj.unrequestSong(songid);
  		}
  	}
  
  	/**
  	 * Request a playlist. Adds all songs in the playlist to the request list
  	 * of the DJ of this user.
  	 * @param cycle The Tapestry MVC cycle.
  	 * @param playlistid The id of the requested playlist
  	 * TODO: The DJ object should have a real requestPlaylist() method. This is not possible
  	 *       at the moment because the DJ does not have DAO access.
  	 */
  	public void doRequestPlaylist(IRequestCycle cycle, long playlistid) {
  		User user = getUser(); 
  		if(user==null) {
  			log.debug("No user logged in, ignoring skip command.");
  			return;
  		}
  		DJ dj = StreamMaster.getDJByUser(user.getId());
  		if (dj==null) {
  			log.debug("Playlist request received but not logged in. Request ignored.");
  			return;
  		}
  		log.debug("Playlist requested by user: "+dj.getUser().getName()+"("+dj.getUser().getId()+")"+", playlistid: "+playlistid);
  		for (Contract_PS contract : getDao().getPlaylistById(playlistid, dj.getUser()).getSongs()) {
  			dj.requestSong(contract.getSong().getId());
  		}
  	}
  
  	public boolean isLoggedon() {
  		//TODO With this, there always is a visit-object. It might be better to only create a Visit when really needed
  		//Solution: use injectstateflag, as below
  		//@InjectStateFlag("visit")
  	    //public abstract boolean getVisitExists();
  		//http://tapestry.apache.org/tapestry4.1/tapestry-annotations/index.html#EventListener
  		
  		
  		//if state:stateobjectname in .page <---
  		return getUser().getId()>0;
  	}
  	
  	public boolean isAdmin() {
  		return getUser().isAdmin();
 	}
 	
 	public void logoff(IRequestCycle cycle) {		
 		WebSession session = cycle.getInfrastructure().getRequest().getSession(false);
 		if (session!=null) {
 			SecurityContext sc = (SecurityContext) session.getAttribute(HttpSessionContextIntegrationFilter.ACEGI_SECURITY_CONTEXT_KEY);
 			if (sc!=null) {
 				sc.setAuthentication(null);
 			}
 		}
 		cycle.activate("Logon");
 	}
 
 	public void doSearch(IRequestCycle cycle) {
 		log.debug("Should redirect to Search-page with query");
 		IPage page = cycle.getPage("Search");
 		PropertyUtils.write(page, "searchQuery", getSearchString());
 		cycle.activate("Search");
 	}
 	
 	/**
 	 * @return The title to use in the generated html.
 	 */
 	public String getTitle() {
 		return "MusiController v4.0";
 	}
 	
 	/**
 	 * Returns the playlistId for a top25 of this month
 	 * @return
 	 */
 	public long getTop25Id() {
 		return (new PlaylistKey(-4,DateTools.getFirstOfThisMonth())).getId();
 	}
 	
 	/**
 	 * Returns the playlistId for all inserted songs of this month.
 	 * @return
 	 */
 	public long getInsertedId() {
 		return (new PlaylistKey(-2001,DateTools.getFirstOfThisMonth())).getId();
 	}
 	
 }