package org.gcube.portlets.widgets.workspaceuploader.server.util;

import java.util.ArrayList;
import java.util.List;

import org.gcube.common.storagehubwrapper.shared.Member;
import org.gcube.portlets.widgets.workspaceuploader.shared.ContactModel;
import org.gcube.vomanagement.usermanagement.UserManager;
import org.gcube.vomanagement.usermanagement.exception.GroupRetrievalFault;
import org.gcube.vomanagement.usermanagement.exception.UserManagementSystemException;
import org.gcube.vomanagement.usermanagement.exception.UserRetrievalFault;
import org.gcube.vomanagement.usermanagement.impl.LiferayUserManager;
import org.gcube.vomanagement.usermanagement.model.GCubeUser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * The Class UserUtil.
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it Aug 3, 2015
 */
public class UserUtil {

	static UserManager um = new LiferayUserManager();
	protected static Logger logger = LoggerFactory.getLogger(UserUtil.class);

	/**
	 * Gets the user full name.
	 *
	 * @param portalLogin the portal login
	 * @return the user full name
	 */
	public static String getUserFullName(String portalLogin) {
		if (portalLogin == null)
			return "";

		if (WsUtil.isWithinPortal()) { // INTO PORTAL

			GCubeUser curr = null;

			try {
				try {
					curr = um.getUserByUsername(portalLogin);

				} catch (UserManagementSystemException e) {

					logger.error("An error occurred in getUserByUsername " + e, e);
				} catch (UserRetrievalFault e) {

					logger.error("An error occurred in getUserByUsername " + e, e);
				}
			} catch (Exception e) {
				logger.error("An error occurred in getUserByUsername " + e, e);
				logger.warn("Return portal login " + portalLogin);
				return portalLogin;
			}

			if (curr != null) {

//				logger.trace("Return "+curr.getFullname() +" full name for: "+portalLogin);
				return curr.getFullname();

			}
		} else {
			logger.trace("DEVELOPEMENT MODE ON");
		}

		logger.trace("Return portal login as full name for: " + portalLogin);
		return portalLogin;
	}

	public static List<ContactModel> listMembersToListContact(List<Member> members) {
		logger.info("listMembersToListContact called for " + members.size() + " member/s");

		List<ContactModel> listContacts = new ArrayList<ContactModel>();
		UserManager userManager = new LiferayUserManager();

		for (Member member : members) {
			logger.debug("Resolving member: " + member);
			boolean isGroup = member.getMemberType().equals(Member.TYPE.GROUP) ? true : false;

			if (!isGroup) {
				// HE/SHE IS A USER
				listContacts.add(new ContactModel(member.getIdentity(), member.getIdentity(), false,
						UserUtil.getUserFullName(member.getIdentity())));
			} else {
				// HE/SHE IS A GROUP
				logger.debug("The member: " + member
						+ " is a group, resolving list of Users from "+LiferayUserManager.class.getSimpleName()+" for the group name: "
						+ member.getName());
				try {
					List<GCubeUser> listUsers = userManager.listUsersByGroupName(member.getName());

					if (listUsers != null) {
						logger.debug("List of user for groupName are: " + listUsers.size());
						for (GCubeUser user : listUsers) {
							listContacts.add(new ContactModel(user.getUsername(), user.getUsername(), false,
									user.getFullname()));
						}
					} else {
						logger.warn("List of user for groupName: " + member.getName() + " is null");
					}
				} catch (UserManagementSystemException | GroupRetrievalFault | UserRetrievalFault e) {
					logger.warn("Error occurrend on resolving the member: " + member.getName(), e);
				}
			}
		}

		logger.info("Returning " + listContacts.size() + " from members");
		return listContacts;

	}

	/**
	 * Gets the list login by info contact model.
	 *
	 * @param listContacts the list contacts
	 * @return the list login by info contact model
	 */
	public static List<String> getListLoginByInfoContactModel(List<ContactModel> listContacts) {

		List<String> listUsers = new ArrayList<String>();

		for (ContactModel infoContactModel : listContacts) {
			listUsers.add(infoContactModel.getLogin());
		}

		return listUsers;
	}

	/**
	 * Separate users names to comma.
	 *
	 * @param listContacts the list contacts
	 * @return the string
	 */
	public static String separateUsersNamesToComma(List<ContactModel> listContacts) {

		String users = "";

		for (int i = 0; i < listContacts.size() - 1; i++) {
			users += listContacts.get(i).getFullName() + ", ";
		}

		if (listContacts.size() > 1)
			users += listContacts.get(listContacts.size() - 1).getFullName();

		return users;
	}

	/**
	 * Separate full name to comma for portal login.
	 *
	 * @param listLogin the list login
	 * @return the string
	 */
	public static String separateFullNameToCommaForPortalLogin(List<String> listLogin) {

		String users = "";

		logger.trace("SeparateFullNameToCommaForPortalLogin converting: " + listLogin);

		// N-1 MEMBERS
		for (int i = 0; i < listLogin.size() - 1; i++) {
//			logger.trace("Converting: "+i+") "+listLogin.get(i));
			users += getUserFullName(listLogin.get(i)) + ", ";
		}

		// LAST MEMBER
		if (listLogin.size() >= 1) {
//			logger.trace("Converting: "+(listLogin.size()-1)+") " +listLogin.get(listLogin.size()-1));
			users += getUserFullName(listLogin.get(listLogin.size() - 1));
		}

		logger.trace("SeparateFullNameToCommaForPortalLogin returning: " + users);

		return users;
	}
}