package org.gcube.portlets.user.joinvre.server;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Properties;

import org.gcube.application.framework.core.session.ASLSession;
import org.gcube.application.framework.core.session.SessionManager;
import org.gcube.portal.custom.communitymanager.OrganizationsUtil;
import org.gcube.portal.custom.scopemanager.scopehelper.ScopeHelper;
import org.gcube.portlets.user.joinvre.client.JoinService;
import org.gcube.portlets.user.joinvre.shared.UserBelonging;
import org.gcube.portlets.user.joinvre.shared.VRE;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.model.Organization;
import com.liferay.portal.service.OrganizationLocalServiceUtil;
import com.liferay.portal.service.UserLocalServiceUtil;

/**
 * @author Massimiliano Assante, ISTI-CNR - massimiliano.assante@isti.cnr.it
 * @author Luca Frosini (ISTI - CNR) http://www.lucafrosini.com/
 */
@SuppressWarnings("serial")
public class JoinServiceImpl extends RemoteServiceServlet implements JoinService {
	
	private static final Logger _log = LoggerFactory.getLogger(JoinServiceImpl.class);

	/**
	 * the current ASLSession
	 * @return the session
	 */
	private ASLSession getASLSession() {
		String sessionID = this.getThreadLocalRequest().getSession().getId();
		String user = (String) this.getThreadLocalRequest().getSession().getAttribute(ScopeHelper.USERNAME_ATTRIBUTE);
		if (user == null) {
			_log.warn("USER IS NULL setting test.user and Running OUTSIDE PORTAL");
			user = getDevelopmentUser();
			SessionManager.getInstance().getASLSession(sessionID, user).setScope("/gcube");
		}		
		return SessionManager.getInstance().getASLSession(sessionID, user);
	}
	
	/**
	 * when packaging test will fail if the user is not set to test.user
	 * @return .
	 */
	public String getDevelopmentUser() {
		String user = "test.user";
		return user;
	}
	
	/**
	 * 
	 * @return true if you're running into the portal, false if in development
	 */
	private boolean isWithinPortal() {
		try {
			UserLocalServiceUtil.getService();
			return true;
		} catch (com.liferay.portal.kernel.bean.BeanLocatorException ex) {			
			_log.trace("Development Mode ON");
			return false;
		}			
	}
	/**
	 * 
	 * @param session the Asl Session
	 * @param withinPortal true when is on Liferay portal
	 * @return the users belonging to the current organization (scope)
	 */
	@Override
	public ArrayList<VRE> getVREs() {
		ArrayList<VRE> vres = new ArrayList<VRE>();

		try {
			if (isWithinPortal()) {
				

			} else {
				List<String> devsecCategories = new ArrayList<String>();
				devsecCategories.add("Development");
				vres.add(new VRE(0, "devsec", "devsec VRE", "", "", "/group/devsec", devsecCategories, UserBelonging.NOT_BELONGING, false));
				List<String> devVRECategories = new ArrayList<String>(devsecCategories);
				devVRECategories.add("Sailing");
				vres.add(new VRE(1, "devVRE", "devVRE VRE", "", "", "/group/devVRE", devVRECategories, UserBelonging.NOT_BELONGING, false));
				List<String> devmodeategories = new ArrayList<String>(devsecCategories);
				devmodeategories.add("Climbing");
				vres.add(new VRE(2, "devmode", "devmode VRE", "", "", "/group/devmode", devmodeategories, UserBelonging.NOT_BELONGING, true));
			}
		} catch (Exception e) {
			_log.error("Error in server get all contacts ", e);
		}
		
		// Ordering VREs by Name
		Collections.sort(vres);
		return vres;
	}
	
	public ArrayList<VRE> getPortalOrganizationMappedToVRE() throws SystemException{
		
		List<Organization> organizations = OrganizationLocalServiceUtil.getOrganizations(0, OrganizationLocalServiceUtil.getOrganizationsCount());
		Organization rootOrganization = null;
		for (Organization organization : organizations) {
			if (organization.getName().equals(getRootOrganizationName())) {
				rootOrganization = organization;
				break;
			}
		}
		
		try {
			_log.info("root: " + rootOrganization.getName() );
		} catch (NullPointerException e) {
			_log.error("Cannot find root organziation, please check gcube-data.properties file in $CATALINA_HOME/conf folder, unless your installing the Bundle");
			return new ArrayList<VRE>();
		}
		
		//for each root sub organizations (VO)
		for (Organization vOrg : rootOrganization.getSuborganizations()) {
			for (Organization vre : vOrg.getSuborganizations()) {
				
			}
		}
		
		
		return null;
	}
	
	public static final String ROOT_ORG = "rootorganization";
	
	/**
	 * read the root VO name from a property file and retuns it
	 */
	protected static String getRootOrganizationName() {
		//get the portles to look for from the property file
		Properties props = new Properties();
		String toReturn = "";

		try {
			String propertyfile = OrganizationsUtil.getTomcatFolder()+"conf/gcube-data.properties";			
			File propsFile = new File(propertyfile);
			FileInputStream fis = new FileInputStream(propsFile);
			props.load( fis);
			toReturn = props.getProperty(ROOT_ORG);
		}
		//catch exception in case properties file does not exist
		catch(IOException e) {
			toReturn = "gcube";
			_log.error("gcube-data.properties file not found under $CATALINA_HOME/conf dir, returning default VO Name " + toReturn);
			return toReturn;
		}
		_log.debug("Returning Root VO Name: " + toReturn );
		return toReturn;
	}
}