/*
 * SSSync, a Simple and Stupid Synchronizer for data with multi-valued attributes
 * Copyright (C) 2014  Ludovic Pouzenc <ludovic@pouzenc.fr>
 *  
 * This file is part of SSSync.
 *
 *  SSSync 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.
 *
 *  SSSync 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 SSSync.  If not, see <http://www.gnu.org/licenses/>
 */

package conf;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.text.ParseException;

import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;

/**
 * TODO javadoc
 * 
 * @author lpouzenc
 */
public class SSSyncConfParser {
	
	public static ConfigRootBean loadMainConfig(String mainConfigFile) throws FileNotFoundException, ParseException {
		Yaml yamlMain = new Yaml(new Constructor(ConfigRootBean.class));

		//TODO : try to prevent weird exceptions when config is not respecting the implicit grammar of the bean tree
		
		ConfigRootBean confMain = (ConfigRootBean) yamlMain.load(new FileInputStream(mainConfigFile));
		
		if ( confMain == null || confMain.getGlobals() == null ) {
			throw new ParseException("Config parser has returned a null item", 0);
		}
		
		// TODO : check config sanity and completeness
		
		return confMain;
	}
	
	public static ConfigConnectionsBean loadConnConfig(String connConfigFile) throws FileNotFoundException, ParseException {
		Yaml yamlConn = new Yaml(new Constructor(ConfigConnectionsBean.class));

		ConfigConnectionsBean confConn = (ConfigConnectionsBean) yamlConn.load(new FileInputStream(connConfigFile));
		
		if ( confConn == null ) {
			throw new ParseException("Config parser has return a null item", 0);
		}
		
		return confConn;
	}

}