RegisterUserService.java

/*
 * Copyright 2010-2019 James Pether Sörling
 *
 * 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.
 *
 *	$Id$
 *  $HeadURL$
*/
package com.hack23.cia.service.impl.action.application;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.UUID;

import org.passay.CharacterRule;
import org.passay.EnglishCharacterData;
import org.passay.LengthRule;
import org.passay.PasswordData;
import org.passay.PasswordValidator;
import org.passay.RuleResult;
import org.passay.WhitespaceRule;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.annotation.Secured;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.hack23.cia.model.internal.application.system.impl.ApplicationConfiguration;
import com.hack23.cia.model.internal.application.system.impl.ApplicationEventGroup;
import com.hack23.cia.model.internal.application.system.impl.ApplicationOperationType;
import com.hack23.cia.model.internal.application.system.impl.ConfigurationGroup;
import com.hack23.cia.model.internal.application.user.impl.UserAccount;
import com.hack23.cia.model.internal.application.user.impl.UserAccount_;
import com.hack23.cia.model.internal.application.user.impl.UserEmailStatus;
import com.hack23.cia.model.internal.application.user.impl.UserLockStatus;
import com.hack23.cia.model.internal.application.user.impl.UserRole;
import com.hack23.cia.model.internal.application.user.impl.UserType;
import com.hack23.cia.service.api.action.application.CreateApplicationEventRequest;
import com.hack23.cia.service.api.action.application.RegisterUserRequest;
import com.hack23.cia.service.api.action.application.RegisterUserResponse;
import com.hack23.cia.service.api.action.common.ServiceResponse.ServiceResult;
import com.hack23.cia.service.data.api.ApplicationConfigurationService;
import com.hack23.cia.service.impl.action.common.AbstractBusinessServiceImpl;
import com.hack23.cia.service.impl.action.common.BusinessService;

/**
 * The Class RegisterUserService.
 */
@Service
@Transactional(propagation = Propagation.REQUIRED)
public final class RegisterUserService extends AbstractBusinessServiceImpl<RegisterUserRequest, RegisterUserResponse>
		implements BusinessService<RegisterUserRequest, RegisterUserResponse> {

	/** The Constant LOGGER. */
	private static final Logger LOGGER = LoggerFactory.getLogger(RegisterUserService.class);

	/** The application configuration service. */
	@Autowired
	private ApplicationConfigurationService applicationConfigurationService;

	/** The password encoder. */
	private final PasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
	
	/** The password validator. */
	private final PasswordValidator passwordValidator = new PasswordValidator(new LengthRule(8, 64),
			new CharacterRule(EnglishCharacterData.UpperCase, 1), new CharacterRule(EnglishCharacterData.LowerCase, 1),
			new CharacterRule(EnglishCharacterData.Digit, 1), new CharacterRule(EnglishCharacterData.Special, 1),
			new WhitespaceRule());

	/**
	 * Instantiates a new register user service.
	 */
	public RegisterUserService() {
		super(RegisterUserRequest.class);
	}

	@Override
	@Secured({ "ROLE_ANONYMOUS" })
	public RegisterUserResponse processService(final RegisterUserRequest serviceRequest) {
		final RegisterUserResponse inputValidation = inputValidation(serviceRequest);
		if (inputValidation != null) {
			return inputValidation;
		}

		final CreateApplicationEventRequest eventRequest = createApplicationEventForService(serviceRequest);

		RegisterUserResponse response;

		final UserAccount userNameExist = getUserDAO().findFirstByProperty(UserAccount_.username,
				serviceRequest.getUsername());
		final UserAccount userEmailExist = getUserDAO().findFirstByProperty(UserAccount_.email, serviceRequest.getEmail());

		final RuleResult passwordRuleResults = passwordValidator
				.validate(new PasswordData(serviceRequest.getUserpassword()));

		if (userEmailExist == null && userNameExist == null && passwordRuleResults.isValid()) {
			final UserAccount userAccount = createUserAccount(serviceRequest);
			eventRequest.setUserId(userAccount.getUserId());
			response = new RegisterUserResponse(ServiceResult.SUCCESS);
		} else {
			response = new RegisterUserResponse(ServiceResult.FAILURE);
			if (passwordRuleResults.isValid()) {
				response.setErrorMessage(RegisterUserResponse.ErrorMessage.USER_ALREADY_EXIST.toString());
				eventRequest.setErrorMessage(RegisterUserResponse.ErrorMessage.USER_ALREADY_EXIST.toString());
			} else {
				final String errorMessage = passwordValidator.getMessages(passwordRuleResults).toString();
				response.setErrorMessage(errorMessage);
				eventRequest.setErrorMessage(errorMessage);
			}
		}

		eventRequest.setApplicationMessage(response.getResult().toString());
		createApplicationEventService.processService(eventRequest);
		LOGGER.info("Event: {}", eventRequest);
		return response;
	}

	/**
	 * Creates the user account.
	 *
	 * @param serviceRequest the service request
	 * @return the user account
	 */
	private UserAccount createUserAccount(final RegisterUserRequest serviceRequest) {
		
		final ApplicationConfiguration registeredUsersGetAdminConfig = applicationConfigurationService
				.checkValueOrLoadDefault("Registered User All get Role Admin", "Registered User All get Role Admin",
						ConfigurationGroup.AUTHORIZATION, RegisterUserService.class.getSimpleName(),
						"Register User Service", "Responsible for create of useraccounts", "registered.users.get.admin",
						"true");

		final UserAccount userAccount = new UserAccount();
		userAccount.setCountry(serviceRequest.getCountry());
		userAccount.setEmail(serviceRequest.getEmail());
		userAccount.setUsername(serviceRequest.getUsername());
		userAccount.setUserId(UUID.randomUUID().toString());
		userAccount.setUserpassword(
				passwordEncoder.encode(userAccount.getUserId() + ".uuid" + serviceRequest.getUserpassword()));
		userAccount.setNumberOfVisits(1);
		
		if ( serviceRequest.getUserType() == null) {
			userAccount.setUserType(UserType.PRIVATE);
		} else {
			userAccount.setUserType(serviceRequest.getUserType());
		}
			
		userAccount.setUserEmailStatus(UserEmailStatus.UNKNOWN);
		userAccount.setUserLockStatus(UserLockStatus.UNLOCKED);
		userAccount.setCreatedDate(new Date());
		getUserDAO().persist(userAccount);
		
		final Collection<SimpleGrantedAuthority> authorities = new ArrayList<>();
		if ("true".equals(registeredUsersGetAdminConfig.getPropertyValue())) {
			userAccount.setUserRole(UserRole.ADMIN);
			authorities.add(new SimpleGrantedAuthority("ROLE_ADMIN"));
		} else {
			userAccount.setUserRole(UserRole.USER);
			authorities.add(new SimpleGrantedAuthority("ROLE_USER"));
		}

		SecurityContextHolder.getContext().setAuthentication(
				new UsernamePasswordAuthenticationToken(userAccount.getUserId(), "n/a", authorities));
		return userAccount;
	}

	@Override
	protected CreateApplicationEventRequest createApplicationEventForService(
			final RegisterUserRequest serviceRequest) {
		final CreateApplicationEventRequest eventRequest = createBaseApplicationEventRequest();
		eventRequest.setEventGroup(ApplicationEventGroup.USER);
		eventRequest.setApplicationOperation(ApplicationOperationType.CREATE);
		eventRequest.setActionName(RegisterUserRequest.class.getSimpleName());
		eventRequest.setSessionId(serviceRequest.getSessionId());
		eventRequest.setElementId(serviceRequest.getEmail());
		return eventRequest;
	}

	@Override
	protected RegisterUserResponse createErrorResponse() {
		return new RegisterUserResponse(ServiceResult.FAILURE);
	}

}