/*

  *   SONEWS News Server

  *   see AUTHORS for the list of contributors

  *

  *   This program 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.

  *

  *   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 General Public License for more details.

  *

  *   You should have received a copy of the GNU General Public License

  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

  */

 package org.sonews.config;

 /**

  * Configuration facade class.

  * @author Christian Lins

  * @since sonews/1.0

  */

 public class Config extends AbstractConfig {

 	public static final int LEVEL_CLI = 1;

 	public static final int LEVEL_FILE = 2;

 	public static final int LEVEL_BACKEND = 3;

 	public static final String CONFIGFILE = "sonews.configfile";

 	/** BackendConfig key constant. Value is the maximum article size in kilobytes. */

 	public static final String ARTICLE_MAXSIZE = "sonews.article.maxsize";

 	/** BackendConfig key constant. Value: Amount of news that are feeded per run. */

 	public static final String EVENTLOG = "sonews.eventlog";

 	public static final String FEED_NEWSPERRUN = "sonews.feed.newsperrun";

 	public static final String FEED_PULLINTERVAL = "sonews.feed.pullinterval";

 	public static final String HOSTNAME = "sonews.hostname";

 	public static final String PORT = "sonews.port";

 	public static final String TIMEOUT = "sonews.timeout";

 	public static final String LOGLEVEL = "sonews.loglevel";

 	public static final String MLPOLL_DELETEUNKNOWN = "sonews.mlpoll.deleteunknown";

 	public static final String MLPOLL_HOST = "sonews.mlpoll.host";

 	public static final String MLPOLL_PASSWORD = "sonews.mlpoll.password";

 	public static final String MLPOLL_USER = "sonews.mlpoll.user";

 	public static final String MLSEND_ADDRESS = "sonews.mlsend.address";

 	public static final String MLSEND_RW_FROM = "sonews.mlsend.rewrite.from";

 	public static final String MLSEND_RW_SENDER = "sonews.mlsend.rewrite.sender";

 	public static final String MLSEND_HOST = "sonews.mlsend.host";

 	public static final String MLSEND_PASSWORD = "sonews.mlsend.password";

 	public static final String MLSEND_PORT = "sonews.mlsend.port";

 	public static final String MLSEND_USER = "sonews.mlsend.user";

 	/** Key constant. If value is "true" every I/O is written to logfile

 	 * (which is a lot!) */

 	public static final String DEBUG = "sonews.debug";

 	/** Key constant. Value is classname of the JDBC driver */

 	public static final String STORAGE_DBMSDRIVER = "sonews.storage.dbmsdriver";

 	/** Key constant. Value is JDBC connect String to the database. */

 	public static final String STORAGE_DATABASE = "sonews.storage.database";

 	/** Key constant. Value is the username for the DBMS. */

 	public static final String STORAGE_USER = "sonews.storage.user";

 	/** Key constant. Value is the password for the DBMS. */

 	public static final String STORAGE_PASSWORD = "sonews.storage.password";

 	public static final String STORAGE_PROVIDER = "sonews.storage.provider";

 	/** Key constant. Value is the name of the host which is allowed to use the

 	 *  XDAEMON command; default: "localhost" */

 	public static final String XDAEMON_HOST = "sonews.xdaemon.host";

 	/** The config key for the filename of the logfile */

 	public static final String LOGFILE = "sonews.log";

 	public static final String[] AVAILABLE_KEYS = {

 		ARTICLE_MAXSIZE,

 		EVENTLOG,

 		FEED_NEWSPERRUN,

 		FEED_PULLINTERVAL,

 		HOSTNAME,

 		MLPOLL_DELETEUNKNOWN,

 		MLPOLL_HOST,

 		MLPOLL_PASSWORD,

 		MLPOLL_USER,

 		MLSEND_ADDRESS,

 		MLSEND_HOST,

 		MLSEND_PASSWORD,

 		MLSEND_PORT,

 		MLSEND_RW_FROM,

 		MLSEND_RW_SENDER,

 		MLSEND_USER,

 		PORT,

 		TIMEOUT,

 		XDAEMON_HOST

 	};

 	private static Config instance = new Config();

 	public static Config inst() {

 		return instance;

 	}

 	private Config() {

 	}

 	@Override

 	public String get(String key, String def) {

 		String val = CommandLineConfig.getInstance().get(key, null);

 		if (val == null) {

 			val = FileConfig.getInstance().get(key, null);

 		}

 		if (val == null) {

 			val = BackendConfig.getInstance().get(key, def);

 		}

 		return val;

 	}

 	public String get(int maxLevel, String key, String def) {

 		String val = CommandLineConfig.getInstance().get(key, null);

 		if (val == null && maxLevel >= LEVEL_FILE) {

 			val = FileConfig.getInstance().get(key, null);

 			if (val == null && maxLevel >= LEVEL_BACKEND) {

 				val = BackendConfig.getInstance().get(key, def);

 			}

 		}

 		return val != null ? val : def;

 	}

 	@Override

 	public void set(String key, String val) {

 		set(LEVEL_BACKEND, key, val);

 	}

 	public void set(int level, String key, String val) {

 		switch (level) {

 			case LEVEL_CLI: {

 				CommandLineConfig.getInstance().set(key, val);

 				break;

 			}

 			case LEVEL_FILE: {

 				FileConfig.getInstance().set(key, val);

 				break;

 			}

 			case LEVEL_BACKEND: {

 				BackendConfig.getInstance().set(key, val);

 				break;

 			}

 		}

 	}

 }