/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.graylog2.system.activities;

import com.google.common.collect.Maps;
import org.graylog2.plugin.ServerStatus;
import org.graylog2.plugin.Tools;
import org.graylog2.plugin.database.ValidationException;
import org.graylog2.shared.system.activities.Activity;
import org.graylog2.shared.system.activities.ActivityWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.inject.Inject;
import java.util.Map;

/**
 * @author Lennart Koopmann <lennart@socketfeed.com>
 */
public class SystemMessageActivityWriter implements ActivityWriter {

    private static final Logger LOG = LoggerFactory.getLogger(SystemMessageActivityWriter.class);
    private final SystemMessageService systemMessageService;
    private final ServerStatus serverStatus;

    @Inject
    public SystemMessageActivityWriter(SystemMessageService systemMessageService, ServerStatus serverStatus) {
        this.systemMessageService = systemMessageService;
        this.serverStatus = serverStatus;
    }
    
    @Override
    public void write(Activity activity) {
        try {
            Map<String, Object> entry = Maps.newHashMap();
            entry.put("timestamp", Tools.nowUTC());
            entry.put("content", activity.getMessage());
            entry.put("caller", activity.getCaller().getCanonicalName());
            entry.put("node_id", serverStatus.getNodeId().toString());

            final SystemMessage sm = systemMessageService.create(entry);
            systemMessageService.save(sm);
        } catch (ValidationException e) {
            LOG.error("Could not write activity.", e);
        }
    }
    
}