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/*-
 * ================================================================================
 * ECOMP Portal SDK
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ================================================================================
 */
package org.openecomp.portalsdk.core.onboarding.crossapi;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.openecomp.portalsdk.core.onboarding.exception.PortalAPIException;
import org.openecomp.portalsdk.core.restful.domain.EcompRole;
import org.openecomp.portalsdk.core.restful.domain.EcompUser;

/**
 * Defines the REST API Interface that an on-boarding application must implement
 * to answer queries and accept updates from the ECOMP Portal about the
 * application's users, roles and user-role assignments.
 */
public interface IPortalRestAPIService {

	// EcompUser Interface

	/**
	 * Creates a user with the specified details. If any error occurs, for
	 * example the user exists, the method should throw PortalApiException with
	 * an appropriate message. The FW library will catch the exception and send
	 * an appropriate response to Portal.
	 * 
	 * @param user
	 *            Model object with attributes of user to be created.
	 * @throws PortalAPIException
	 *             If any error occurs while processing the request; for
	 *             example, user exists.
	 */
	public void pushUser(EcompUser user) throws PortalAPIException;

	/**
	 * Updates details about the user with the specified loginId. For example,
	 * mark user as inactive. If any error occurs, the method should throw
	 * PortalApiException with an appropriate message. The FW library will catch
	 * the exception and send an appropriate response to Portal.
	 * 
	 * @param loginId
	 *            EcompUser ID to be updated.
	 * @param user
	 *            Model object with attributes of user to be updated.
	 * @throws PortalAPIException
	 *             If any error occurs while processing the request; for
	 *             example, unknown user.
	 */
	public void editUser(String loginId, EcompUser user) throws PortalAPIException;

	/**
	 * Gets and returns the user object with the specified loginId. If any error
	 * occurs, the method should throw PortalApiException with an appropriate
	 * message. The FW library will catch the exception and send an appropriate
	 * response to Portal
	 * 
	 * @param loginId
	 *            EcompUser ID to be fetched
	 * @return Model object with user attributes.
	 * @throws PortalAPIException
	 *             If any error occurs while processing the request; for
	 *             example, unknown user.
	 */
	public EcompUser getUser(String loginId) throws PortalAPIException;

	/**
	 * Gets and returns a list of active users. If any error occurs, the method
	 * should throw PortalApiException with an appropriate message. The FW
	 * library will catch the exception and send an appropriate response to
	 * Portal.
	 * 
	 * @return List of user attribute model objects; empty list if none are
	 *         found.
	 * @throws PortalAPIException
	 *             If any error occurs while processing the request.
	 */
	public List<EcompUser> getUsers() throws PortalAPIException;

	// Roles Interface

	/**
	 * Gets and returns a list of active roles. If any error occurs, the method
	 * should throw PortalApiException with an appropriate message. The FW
	 * library will catch the exception and send an appropriate response to
	 * Portal.
	 * 
	 * @return List of role attribute objects; empty list if none are found.
	 * @throws PortalAPIException
	 *             If an unexpected error occurs while processing the request.
	 */
	public List<EcompRole> getAvailableRoles() throws PortalAPIException;

	/**
	 * Updates roles for the user with the specified loginId to the list of
	 * roles provided as the second argument. After this operation, the should
	 * have ONLY the roles provided in the list above. For example, if user had
	 * roles r1, r2 and r3; and a call was made to pushUserRole with a list
	 * containing only roles r3 and r4, this method should leave the user with
	 * roles r3 and r4 since those were the ONLY roles provided in second
	 * argument. If any error occurs, the method should throw PortalApiException
	 * with an appropriate message. The FW library will catch the exception and
	 * send an appropriate response to Portal.
	 * 
	 * @param loginId
	 *            EcompUser ID to be updated.
	 * @param roles
	 *            List of role attribute objects
	 * @throws PortalAPIException
	 *             If any error occurs while processing the request.
	 */
	public void pushUserRole(String loginId, List<EcompRole> roles) throws PortalAPIException;

	/**
	 * Gets and returns a list of roles for the user with the specified loginId.
	 * If any error occurs, the method should throw PortalApiException with an
	 * appropriate message. The FW library will catch the exception and send an
	 * appropriate response to Portal.
	 * 
	 * @param loginId
	 * @return List of model objects; empty if no roles are found.
	 * @throws PortalAPIException
	 *             If any error occurs while processing the request; e.g., user
	 *             not found.
	 */
	public List<EcompRole> getUserRoles(String loginId) throws PortalAPIException;

	// Security Interface

	/**
	 * Should return true if the call should be allowed and false if not.
	 * Currently Portal sends two headers of username and password in each
	 * request which the app should check. If match, return true; else return
	 * false. If any error occurs, the method should throw PortalApiException
	 * with an appropriate message. The FW library will catch the exception and
	 * send an appropriate response to Portal.
	 * 
	 * @param request
	 * @return true if the request contains appropriate credentials, else false.
	 * @throws PortalAPIException
	 *             If an unexpected error occurs while processing the request.
	 */
	public boolean isAppAuthenticated(HttpServletRequest request) throws PortalAPIException;

	/**
	 * Gets and returns the userId for the logged-in user based on the request.
	 * If any error occurs, the method should throw PortalApiException with an
	 * appropriate message. The FW library will catch the exception and send an
	 * appropriate response to Portal.
	 * 
	 * @param request
	 * @return true if the request contains appropriate credentials, else false.
	 * @throws PortalAPIException
	 *             If an unexpected error occurs while processing the request.
	 */
	public String getUserId(HttpServletRequest request) throws PortalAPIException;

}