/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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.keycloak.migration.migrators;

import org.keycloak.migration.ModelVersion;
import org.keycloak.models.ImpersonationConstants;
import org.keycloak.models.KeycloakSession;
import org.keycloak.models.RealmModel;
import org.keycloak.models.UserFederationMapperModel;
import org.keycloak.models.UserModel;
import org.keycloak.models.utils.DefaultAuthenticationFlows;
import org.keycloak.models.utils.DefaultRequiredActions;
import org.keycloak.models.utils.KeycloakModelUtils;

import java.util.Arrays;
import java.util.List;

/**
 * @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
 * @version $Revision: 1 $
 */
public class MigrateTo1_4_0 implements Migration {
    public static final ModelVersion VERSION = new ModelVersion("1.4.0");

    public ModelVersion getVersion() {
        return VERSION;
    }

    public void migrate(KeycloakSession session) {
        List<RealmModel> realms = session.realms().getRealms();
        for (RealmModel realm : realms) {
            if (realm.getAuthenticationFlows().size() == 0) {
                DefaultAuthenticationFlows.migrateFlows(realm);
                DefaultRequiredActions.addActions(realm);
            }
            ImpersonationConstants.setupImpersonationService(session, realm);

            migrateLDAPMappers(session, realm);
            migrateUsers(session, realm);
        }

    }

    private void migrateLDAPMappers(KeycloakSession session, RealmModel realm) {
        List<String> mandatoryInLdap = Arrays.asList("username", "username-cn", "first name", "last name");
        for (UserFederationMapperModel ldapMapper : realm.getUserFederationMappers()) {
            if (mandatoryInLdap.contains(ldapMapper.getName())) {
                ldapMapper.getConfig().put("is.mandatory.in.ldap", "true");
                realm.updateUserFederationMapper(ldapMapper);
            }
        }
    }

    private void migrateUsers(KeycloakSession session, RealmModel realm) {
        List<UserModel> users = session.userStorage().getUsers(realm, false);
        for (UserModel user : users) {
            String email = user.getEmail();
            email = KeycloakModelUtils.toLowerCaseSafe(email);
            if (email != null && !email.equals(user.getEmail())) {
                user.setEmail(email);
            }
        }
    }
}
