/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2014 by RapidMiner and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapidminer.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.tools.config;

import java.io.File;
import java.util.Collections;
import java.util.Map;
import java.util.logging.Level;

import org.w3c.dom.Document;

import com.rapidminer.io.process.XMLTools;
import com.rapidminer.tools.FileSystemService;
import com.rapidminer.tools.I18N;
import com.rapidminer.tools.LogService;
import com.rapidminer.tools.container.Pair;

/** Stores configurations in files (one file per {@link Configurator}.
 * 
 * @author Simon Fischer
 *
 */
public class ClientConfigurationManager extends ConfigurationManager {
	
	@Override
	protected Map<Pair<Integer, String>, Map<String, String>> loadAllParameters(Configurator configurator) throws ConfigurationException {
		final File file = getConfigFile(configurator);
		if (!file.exists()) {
			//LogService.getRoot().info("No configuration file found for "+configurator.getName());
			LogService.getRoot().log(Level.INFO, "com.rapidminer.tools.config.ClientConfigurationManager.no_configuration_file_found", configurator.getName());
			return Collections.emptyMap();
		}
		try {			
			return fromXML(XMLTools.parse(file), configurator);
		} catch (Exception e) {
			throw new ConfigurationException("Failed to read configuration file '"+file.getAbsolutePath()+"' for "+configurator.getName()+": "+e, e);
		}
	}

//	@Override
//	public void saveConfiguration() {
//		for (String typeId : getAllTypeIds()) {
//			Configurator configurator = getConfigurator(typeId);
//			try {
//				Document xml = getConfigurablesAsXML(configurator);
//				File file = getConfigFile(configurator);
//				XMLTools.stream(xml, file, null);
//			} catch (Exception e) {
//				//LogService.getRoot().log(Level.WARNING, "Failed to save configurations for "+configurator.getName()+": "+e, e);
//				LogService.getRoot().log(Level.WARNING,
//						I18N.getMessage(LogService.getRoot().getResourceBundle(), 
//								"com.rapidminer.tools.config.ClientConfigurationManager.saving_configurations_error", 
//								configurator.getName(), e),
//						e);
//			}
//		}		
//	}

	/** Returns the config file in which this data will be saved. */
	private File getConfigFile(Configurator configurator) {
		return FileSystemService.getUserConfigFile("configurable-"+configurator.getTypeId()+".xml");
	}

	@Override
	public void saveConfiguration(String typeId) throws ConfigurationException {
		Configurator configurator = getConfigurator(typeId);
		try {
			Document xml = getConfigurablesAsXML(configurator, true);
			File file = getConfigFile(configurator);
			XMLTools.stream(xml, file, null);
		} catch (Exception e) {
			//LogService.getRoot().log(Level.WARNING, "Failed to save configurations for "+configurator.getName()+": "+e, e);
			LogService.getRoot().log(Level.WARNING,
					I18N.getMessage(LogService.getRoot().getResourceBundle(), 
							"com.rapidminer.tools.config.ClientConfigurationManager.saving_configurations_error", 
							configurator.getName(), e),
					e);
			throw new ConfigurationException("Failed to save configuration file: "+e, e);
		}
	}
}