package org.gcube.vomanagement.usermanagement.impl;

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

import org.gcube.vomanagement.usermanagement.UserManager;
import org.gcube.vomanagement.usermanagement.exception.GroupRetrievalFault;
import org.gcube.vomanagement.usermanagement.exception.RoleRetrievalFault;
import org.gcube.vomanagement.usermanagement.exception.UserManagementPortalException;
import org.gcube.vomanagement.usermanagement.exception.UserManagementSystemException;
import org.gcube.vomanagement.usermanagement.exception.UserRetrievalFault;
import org.gcube.vomanagement.usermanagement.model.Email;
import org.gcube.vomanagement.usermanagement.model.GroupModel;
import org.gcube.vomanagement.usermanagement.model.RoleModel;
import org.gcube.vomanagement.usermanagement.model.UserModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.PropsUtil;
import com.liferay.portal.model.Company;
import com.liferay.portal.model.EmailAddress;
import com.liferay.portal.model.Group;
import com.liferay.portal.model.User;
import com.liferay.portal.service.CompanyLocalServiceUtil;
import com.liferay.portal.service.GroupLocalServiceUtil;
import com.liferay.portal.service.UserLocalServiceUtil;
import com.liferay.portlet.sites.util.SitesUtil;

public class LiferayUserManager implements UserManager {
	/**
	 * logger
	 */
	private static final Logger _log = LoggerFactory.getLogger(LiferayUserManager.class);
	/**
	 * 
	 */
	public static final String DEFAULT_COMPANY_WEB_ID = "liferay.com";

	public static Company getCompany() throws PortalException, SystemException {
		return CompanyLocalServiceUtil.getCompanyByWebId(getDefaultCompanyWebId());
	}
	/**
	 * 
	 * @return the default company web-id (e.g. iMarine.eu)
	 */
	public static String getDefaultCompanyWebId() {
		String defaultWebId = "";
		try {
			defaultWebId = GetterUtil.getString(PropsUtil.get("company.default.web.id"));
		}
		catch (NullPointerException e) {
			_log.info("Cound not find property company.default.web.id in portal.ext file returning default web id: " + DEFAULT_COMPANY_WEB_ID);
			return DEFAULT_COMPANY_WEB_ID;
		}
		return defaultWebId;
	}

	private static UserModel mapLRUser(User u) throws PortalException, SystemException {
		if (u != null) {
			List<Email> emails = new ArrayList<Email>();
			for (EmailAddress e : u.getEmailAddresses()) {
				emails.add(new Email(e.getAddress(), e.getType().toString(), e.isPrimary()));
			}
			return new UserModel(
					u.getUserId(), 
					u.getScreenName(), 
					u.getEmailAddress(), 
					u.getFirstName(),
					u.getMiddleName(),
					u.getLastName(),
					u.getFullName(),
					u.getCreateDate().getTime(),
					u.getPortraitId()+"",
					u.isMale(),
					u.getJobTitle(),
					emails);
		}
		else 
			return null;
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	public UserModel getUserByUsername(String username) throws UserManagementSystemException, UserRetrievalFault {
		User toGet = null;
		UserModel toReturn = null;
		try {
			toGet = UserLocalServiceUtil.getUserByScreenName(getCompany().getCompanyId(), username);
			toReturn = mapLRUser(toGet);
		} catch (PortalException e) {
			throw new UserRetrievalFault("User not existing", e);
		} catch (SystemException e) {
			throw new UserManagementSystemException(e.getMessage(), e);
		}
		return toReturn;
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	public UserModel getUserByEmail(String emailAddress)	throws UserManagementSystemException, UserRetrievalFault {
		User toGet = null;
		UserModel toReturn = null;
		try {
			toGet = UserLocalServiceUtil.getUserByEmailAddress(getCompany().getCompanyId(), emailAddress);
			toReturn = mapLRUser(toGet);
		} catch (PortalException e) {
			throw new UserRetrievalFault("User not existing", e);
		} catch (SystemException e) {
			throw new UserManagementSystemException(e.getMessage(), e);
		}
		return toReturn;
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	public List<UserModel> listUsers() throws UserManagementSystemException {
		List<UserModel> toReturn = new ArrayList<UserModel>();
		try {
			List<User> lrUsers = UserLocalServiceUtil.getUsers(0, UserLocalServiceUtil.getUsersCount());
			for (User user : lrUsers) {
				if (user.isActive())
					toReturn.add(mapLRUser(user));
			}
		} catch (SystemException e) {
			throw new UserManagementSystemException(e.getMessage(), e);
		} catch (PortalException e) {
			e.printStackTrace();
		}
		return toReturn;
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	public List<UserModel> listUsersByGroup(long groupId) throws UserManagementSystemException, GroupRetrievalFault, UserRetrievalFault {
		List<UserModel> toReturn = new ArrayList<UserModel>();
		try {
			for (User user : UserLocalServiceUtil.getGroupUsers(groupId)) {
				if (user.isActive())
					toReturn.add(mapLRUser(user));
			}
		} catch (PortalException e) {
			e.printStackTrace();
		} catch (SystemException e) {
			e.printStackTrace();
		}
		return toReturn;
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	public List<UserModel> listUsersByGroupName(String name) throws UserManagementSystemException, GroupRetrievalFault, UserRetrievalFault {
		List<UserModel> toReturn = new ArrayList<UserModel>();
		try {
			Group g = (GroupLocalServiceUtil.getGroup(getCompany().getCompanyId(), name));
			for (User user : UserLocalServiceUtil.getGroupUsers(g.getGroupId())) {
				if (user.isActive())
					toReturn.add(mapLRUser(user));
			}
		} catch (PortalException e) {
			e.printStackTrace();
		} catch (SystemException e) {
			e.printStackTrace();
		}
		return toReturn;
	}

	@Override
	public List<UserModel> listPendingUsersByGroup(String groupId)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public String getMembershipRequestComment(String userId, String groupId)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public HashMap<UserModel, List<RoleModel>> listUsersAndRolesByGroup(
			String groupId) throws GroupRetrievalFault,
			UserManagementSystemException, UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public HashMap<UserModel, List<GroupModel>> listUsersAndGroupsByRole(
			String roleId) throws UserManagementSystemException,
			RoleRetrievalFault, UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public List<UserModel> listUsersByGroupAndRole(String groupId, String roleId)
			throws UserManagementSystemException, RoleRetrievalFault,
			GroupRetrievalFault, UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void assignUserToGroup(String groupId, String userId)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserRetrievalFault, UserManagementPortalException {
		// TODO Auto-generated method stub

	}

	@Override
	public void dismissUserFromGroup(String groupId, String userId)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserRetrievalFault {
		// TODO Auto-generated method stub

	}

	@Override
	public void requestMembership(String userId, String groupId, String comment)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserRetrievalFault {
		// TODO Auto-generated method stub

	}

	@Override
	public List<UserModel> listUnregisteredUsersByGroup(String groupId)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public Long getUserId(String screenName)
			throws UserManagementSystemException {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public List<UserModel> getMembershipRequests(String groupId)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public HashMap<String, String> getUserCustomAttributes(String userId)
			throws UserManagementSystemException, UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void setUserCustomAttributes(String userId,
			HashMap<String, String> hMap) throws UserManagementSystemException,
			UserRetrievalFault, UserManagementPortalException {
		// TODO Auto-generated method stub

	}

	@Override
	public String getUserCustomAttributeByName(String userId, String attrName)
			throws UserManagementSystemException, UserRetrievalFault {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void setUserCustomAttributeByName(String userId, String attrName,
			String attrValue) throws UserManagementSystemException,
			UserRetrievalFault, UserManagementPortalException {
		// TODO Auto-generated method stub

	}

	@Override
	public void denyMembershipRequest(String userId, String groupId)
			throws UserManagementSystemException, GroupRetrievalFault,
			UserManagementPortalException {
		// TODO Auto-generated method stub

	}

}