/**
 *
 */
package org.gcube.portlets.user.workspaceexplorerapp.server;

import javax.servlet.http.HttpSession;

import org.gcube.application.framework.core.session.ASLSession;
import org.gcube.application.framework.core.session.SessionManager;
import org.gcube.common.homelibrary.home.HomeLibrary;
import org.gcube.common.homelibrary.home.exceptions.HomeNotFoundException;
import org.gcube.common.homelibrary.home.exceptions.InternalErrorException;
import org.gcube.common.homelibrary.home.workspace.Workspace;
import org.gcube.common.homelibrary.home.workspace.exceptions.WorkspaceFolderNotFoundException;
import org.gcube.common.scope.api.ScopeProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * The Class WsUtil.
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * Mar 7, 2016
 */
public class WsUtil {

	public static final String USERNAME_ATTRIBUTE = "username";
	public static final String TEST_USER = "francesco.mangiacrapa";
	public static final String TEST_SCOPE = "/gcube/devsec/devVRE";

	public static final Logger logger = LoggerFactory.getLogger(WsUtil.class);

	/**
	 * Gets the ASL session.
	 *
	 * @param httpSession the http session
	 * @return the ASL session
	 */
	public static ASLSession getASLSession(HttpSession httpSession)	{
		String sessionID = httpSession.getId();
		String user = (String) httpSession.getAttribute(USERNAME_ATTRIBUTE);

		//TODO we check for the older attribute name
		if (user == null) {
			user = (String) httpSession.getAttribute("user");
		}

		if (user == null) {

			logger.error("WORKSPACE PORTLET STARTING IN TEST MODE - NO USER FOUND");

			//for test only
//			user = "test.user";
			user = TEST_USER;
			httpSession.setAttribute(USERNAME_ATTRIBUTE, user);
			ASLSession session = SessionManager.getInstance().getASLSession(sessionID, user);
			session.setScope(TEST_SCOPE);

			return session;
		}
		else {
			logger.trace("user found in session "+user);
		}
		return SessionManager.getInstance().getASLSession(sessionID, user);
	}

	/**
	 * Gets the workspace.
	 *
	 * @param httpSession the http session
	 * @return the workspace
	 * @throws InternalErrorException the internal error exception
	 * @throws HomeNotFoundException the home not found exception
	 * @throws WorkspaceFolderNotFoundException the workspace folder not found exception
	 */
	public static Workspace getWorkspace(HttpSession httpSession) throws InternalErrorException, HomeNotFoundException, WorkspaceFolderNotFoundException	{
		ASLSession session = getASLSession(httpSession);
		logger.trace("Scope : "+session.getScope() + " username: "+session.getUsername());
		String scope = session.getScope();
		if(scope==null)
			scope= WsUtil.TEST_SCOPE;
		System.out.println("Scope : "+scope + " username: "+session.getUsername());
		ScopeProvider.instance.set(scope);
		Workspace workspace = HomeLibrary.getUserWorkspace(session.getUsername());
		return workspace;
	}

}