/**
 * Copyright (C) 2010-2017 Structr GmbH
 *
 * This file is part of Structr <http://structr.org>.
 *
 * Structr 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.
 *
 * Structr 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 Structr.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.structr.rest.maintenance;

import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.structr.api.DatabaseService;
import org.structr.api.graph.Node;
import org.structr.api.graph.Relationship;
import org.structr.common.error.FrameworkException;
import org.structr.core.app.App;
import org.structr.core.app.StructrApp;
import org.structr.core.graph.MaintenanceCommand;
import org.structr.core.graph.NodeService;
import org.structr.core.graph.NodeServiceCommand;
import org.structr.core.graph.Tx;
import org.structr.rest.resource.MaintenanceParameterResource;


/**
 *
 *
 */
public class DeleteSpatialIndexCommand extends NodeServiceCommand implements MaintenanceCommand {

	private static final Logger logger = LoggerFactory.getLogger(DeleteSpatialIndexCommand.class.getName());

	static {

		MaintenanceParameterResource.registerMaintenanceCommand("deleteSpatialIndex", DeleteSpatialIndexCommand.class);
	}

	@Override
	public void execute(Map<String, Object> attributes) throws FrameworkException {


		final DatabaseService graphDb = StructrApp.getInstance().getService(NodeService.class).getGraphDb();
		final List<Node> toDelete          = new LinkedList<>();

		for (final Node node: graphDb.getAllNodes()) {

			try {
				if (node.hasProperty("bbox") && node.hasProperty("gtype") && node.hasProperty("id") && node.hasProperty("latitude") && node.hasProperty("longitude")) {

					toDelete.add(node);
				}

			} catch (Throwable t) {}

		}

		final App app = StructrApp.getInstance(securityContext);

		try (final Tx tx = app.tx()) {

			for (Node node : toDelete) {

				logger.info("Deleting node {}", node);

				try {

					for (Relationship rel : node.getRelationships()) {

						rel.delete();
					}

					node.delete();

				} catch (Throwable t) {

					logger.warn("", t);
				}

			}

			tx.success();
		}
	}

	@Override
	public boolean requiresEnclosingTransaction() {
		return true;
	}

	@Override
	public boolean requiresFlushingOfCaches() {
		return false;
	}
}