/**
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * 
 */

package com.vuze.util;

import java.util.Arrays;
import java.util.List;
import java.util.Map;

/**
 * @author TuxPaper
 * @created Jun 1, 2007
 */
@SuppressWarnings("rawtypes")
public class MapUtils
{
	public static int getMapInt(Map map, String key, int def) {
		if (map == null) {
			return def;
		}
		try {
			Number n = (Number) map.get(key);
			
			if ( n == null ){
				
				return( def );
			}

			return n.intValue();
		} catch (Throwable e) {
			return def;
		}
	}

	public static long getMapLong(Map map, String key, long def) {
		if (map == null) {
			return def;
		}
		try {
			Number n = (Number) map.get(key);
			
			if ( n == null ){
				
				return( def );
			}

			return n.longValue();
		} catch (Throwable e) {
			return def;
		}
	}

	public static String getMapString(Map map, String key, String def) {
		if (map == null) {
			return def;
		}
		try {
			Object o = map.get(key);
			if (o == null && !map.containsKey(key)) {
				return def;
			}
			// NOTE: The above returns def when map doesn't contain the key,
			//       which suggests below we would return the null when o is null.  
			//       But we don't! And now, some callers rely on this :(
			
			if (o instanceof String) {
				return (String) o;
			}
			if (o instanceof byte[]) {
				return new String((byte[]) o, "utf-8");
			}
			return def;
		} catch (Throwable t) {
			return def;
		}
	}

	@SuppressWarnings("unchecked")
	public static void setMapString(Map map, String key, String val ){
		if ( map == null ){
			return;
		}
		try{
			if ( val == null ){
				map.remove( key );
			}else{
				map.put( key, val.getBytes( "utf-8" ));
			}
		}catch( Throwable e ){
		}
	}
	
	public static Object getMapObject(Map map, String key, Object def, Class cla) {
		if (map == null) {
			return def;
		}
		try {
			Object o = map.get(key);
			if (cla.isInstance(o)) {
				return o;
			} else {
				return def;
			}
		} catch (Throwable t) {
			return def;
		}
	}

	public static boolean getMapBoolean(Map map, String key, boolean def) {
		if (map == null) {
			return def;
		}
		try {
			Object o = map.get(key);
			if (o instanceof Boolean) {
				return ((Boolean) o).booleanValue();
			}
			
			if (o instanceof Long) {
				return ((Long) o).longValue() == 1;
			}
			
			return def;
		} catch (Throwable e) {
			return def;
		}
	}

	public static List getMapList(Map map, String key, List def) {
		if (map == null) {
			return def;
		}
		try {
			Object o = map.get(key);
			if (o instanceof List) {
				return (List) o;
			}
			if (o == null) {
				return def;
			}
			if (o.getClass().isArray()) {
				return Arrays.asList((Object[]) o);
			}
		} catch (Throwable t) {
			t.printStackTrace();
		}
		return def;
	}

	public static Map getMapMap(Map map, String key, Map def) {
		if (map == null) {
			return def;
		}
		try {
			Map valMap = (Map) map.get(key);
			if (valMap == null && !map.containsKey(key)) {
				return def;
			}
			return valMap;
		} catch (Throwable t) {
			return def;
		}
	}

	public static float getMapFloat(Map map, String key, float def) {
		if (map == null) {
			return def;
		}
		try {
			Number n = (Number) map.get(key);
			
			if ( n == null ){
				
				return( def );
			}

			return n.floatValue();
		} catch (Throwable e) {
			return def;
		}
	}

}