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/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      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.kie.uberfire.social.activities.persistence;

import com.google.gson.Gson;
import org.kie.uberfire.social.activities.model.SocialUser;
import org.kie.uberfire.social.activities.server.SocialUserServicesExtendedBackEndImpl;
import org.uberfire.backend.server.UserServicesImpl;
import org.uberfire.io.IOService;
import org.uberfire.java.nio.file.Path;

public class SocialUserClusterPersistence extends SocialUserCachePersistence {

    private final SocialUserClusterMessaging socialUserClusterMessaging;

    public SocialUserClusterPersistence( SocialUserServicesExtendedBackEndImpl userServicesBackend,
                                         UserServicesImpl userServices,
                                         IOService ioService,
                                         Gson gson,
                                         SocialUserClusterMessaging socialUserClusterMessaging ) {
        super( userServicesBackend, userServices, ioService, gson );
        this.socialUserClusterMessaging = socialUserClusterMessaging;
    }

    @Override
    public void updateUsers( SocialUser... users ) {
        for ( SocialUser user : users ) {
            usersCache.put( user.getUserName(), user );
            Path userFile = userServicesBackend.buildPath( SOCIAL_FILES, user.getUserName() );
            try {
                ioService.startBatch( userFile.getFileSystem() );
                ioService.write( userFile, gson.toJson( user ) );
            } catch ( Exception e ) {
                throw new ErrorUpdatingUsers( e );
            } finally {
                ioService.endBatch();
            }
            socialUserClusterMessaging.notify( user );
        }
    }

    @Override
    String syncUserNamesCacheAndFile( String userName ) {
        if ( usersNamesCache.contains( userName ) ) {
            return userName;
        } else {
            usersNamesCache.add( userName );
            SocialUser socialUser = createOrRetrieveUserData( userName );
            usersCache.put( userName, socialUser );
            writeUserNamesOnFile( usersNamesCache );
            return userName;
        }
    }

    public void sync( SocialUser user ) {
        if ( !usersNamesCache.contains( user.getUserName() ) ) {
            usersNamesCache.add( user.getUserName() );
        }
        usersCache.put( user.getUserName(), user );
    }

}