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/*
 * Copyright (C) Inria Sophia Antipolis - Méditerranée / LIRMM
 * (Université de Montpellier & CNRS) (2014 - 2015)
 *
 * Contributors :
 *
 * Clément SIPIETER 
 * Mélanie KÖNIG
 * Swan ROCHER
 * Jean-François BAGET
 * Michel LECLÈRE
 * Marie-Laure MUGNIER 
 *
 *
 * This file is part of Graal .
 *
 * This software is governed by the CeCILL  license under French law and
 * abiding by the rules of distribution of free software.  You can  use,
 * modify and/ or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL
 * "http://www.cecill.info".
 *
 * As a counterpart to the access to the source code and  rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty  and the software's author,  the holder of the
 * economic rights,  and the successive licensors  have only  limited
 * liability.
 *
 * In this respect, the user's attention is drawn to the risks associated
 * with loading,  using,  modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean  that it is complicated to manipulate,  and  that  also
 * therefore means  that it is reserved for developers  and  experienced
 * professionals having in-depth computer knowledge. Users are therefore
 * encouraged to load and test the software's suitability as regards their
 * requirements in conditions enabling the security of their systems and/or
 * data to be ensured and,  more generally, to use and operate it in the
 * same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 */
 /**
 * 
 */
package fr.lirmm.graphik.graal.apps;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.LinkedList;

import com.beust.jcommander.JCommander;
import com.beust.jcommander.Parameter;

import fr.lirmm.graphik.graal.api.core.AtomSetException;
import fr.lirmm.graphik.graal.api.core.Rule;
import fr.lirmm.graphik.graal.api.forward_chaining.ChaseException;
import fr.lirmm.graphik.graal.api.forward_chaining.RuleApplier;
import fr.lirmm.graphik.graal.api.io.ParseException;
import fr.lirmm.graphik.graal.forward_chaining.NaiveChase;
import fr.lirmm.graphik.graal.io.dlp.DlgpParser;
import fr.lirmm.graphik.graal.store.rdbms.DefaultRdbmsStore;
import fr.lirmm.graphik.graal.store.rdbms.RdbmsStore;
import fr.lirmm.graphik.graal.store.rdbms.SqlHomomorphism;
import fr.lirmm.graphik.graal.store.rdbms.driver.MysqlDriver;
import fr.lirmm.graphik.graal.store.rdbms.driver.RdbmsDriver;
import fr.lirmm.graphik.graal.store.rdbms.rule_applier.SQLRuleApplier;
import fr.lirmm.graphik.util.Profiler;

/**
 * @author Clément Sipieter (INRIA) {@literal }
 * 
 * Perform one step of a forward chaining algorithm.
 *
 */
public class OneStepForwardChaining {

	@Parameter(names = { "-f", "--dlp" }, description = "DLP file")
	private String file = "";
	
//	@Parameter(names = { "--driver"}, description = "mysql|sqlite")
//	private String driverName = "mysql";
	
	@Parameter(names = { "--db"}, description = "database name")
	private String database = "";
	
	@Parameter(names = { "--host"}, description = "database host")
	private String databaseHost = "localhost";
	
	@Parameter(names = { "--user"}, description = "database user")
	private String databaseUser = "root";
	
	@Parameter(names = { "--password"}, description = "database password")
	private String databasePassword = "root";
	
	

	@Parameter(names = { "-h", "--help" }, help = true)
	private boolean help;

	private static final Profiler PROFILER = new Profiler(System.out);
	
	public static void main(String[] args) throws AtomSetException, FileNotFoundException, ChaseException, ParseException {
		OneStepForwardChaining options = new OneStepForwardChaining();
		JCommander commander = new JCommander(options, args);

		if (options.help) {
			commander.usage();
			System.exit(0);
		}
		
		// Driver
		RdbmsDriver driver;
		driver = new MysqlDriver(options.databaseHost, options.database, options.databaseUser, options.databasePassword);
		RdbmsStore atomSet = new DefaultRdbmsStore(driver);
		
		NaiveChase chase = null;
		
		DlgpParser parser = new DlgpParser(new File(options.file));
		LinkedList rules = new LinkedList();
		while (parser.hasNext()) {
			Object o = parser.next();
			if(o instanceof Rule) {
				rules.add((Rule)o);
			}
		}
			
		RuleApplier applier = new SQLRuleApplier(
				SqlHomomorphism.instance());
		chase = new NaiveChase(rules, atomSet, applier);

		chase.enableVerbose(true);
		PROFILER.start("forward chaining time");
		chase.next();
		PROFILER.stop("forward chaining time");
	}
};