/*
 * Copyright 2012-2014 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat 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 2, or (at your
 * option) any later version.
 *
 * Thermostat 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 Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.agent.config;

import com.redhat.thermostat.common.cli.Arguments;
import com.redhat.thermostat.common.config.ThermostatOptionParser;
import com.redhat.thermostat.shared.config.InvalidConfigurationException;

public class AgentOptionParser implements ThermostatOptionParser {

    private AgentStartupConfiguration configuration;
    private Arguments args;
    
    private boolean isHelp;
    
    public AgentOptionParser(AgentStartupConfiguration configuration, Arguments args) {
        this.configuration = configuration;
        this.args = args;
        isHelp = false;
    }
    
    @Override
    public void parse() throws InvalidConfigurationException {

        if (args.hasArgument("saveOnExit")) {
            configuration.setPurge(false);
        }

        if (args.hasArgument("dbUrl")) {
            String url = args.getArgument("dbUrl");
            configuration.setDatabaseURL(url);
        } else {
            if (configuration.getDBConnectionString() == null) {
                System.err.println("database url not specified... must be " +
                                   "either set in config or passed on " +
                                   "the command line");
                isHelp = true;
            }
        }
    }
    
    public boolean isHelp() {
        return isHelp;
    }
}