/*******************************************************************************
 * Copyright (c) 2014 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Jeff Martin - initial API and implementation
 ******************************************************************************/
package cuchaz.enigma.analysis;

import java.util.List;

import javax.swing.tree.DefaultMutableTreeNode;

import com.google.common.collect.Lists;

import cuchaz.enigma.mapping.ClassEntry;
import cuchaz.enigma.mapping.MethodEntry;
import cuchaz.enigma.mapping.Translator;

public class MethodImplementationsTreeNode extends DefaultMutableTreeNode
{
	private static final long serialVersionUID = 3781080657461899915L;
	
	private Translator m_deobfuscatingTranslator;
	private MethodEntry m_entry;
	
	public MethodImplementationsTreeNode( Translator deobfuscatingTranslator, MethodEntry entry )
	{
		if( entry == null )
		{
			throw new IllegalArgumentException( "entry cannot be null!" );
		}
		
		m_deobfuscatingTranslator = deobfuscatingTranslator;
		m_entry = entry;
	}
	
	public MethodEntry getMethodEntry( )
	{
		return m_entry;
	}
	
	public String getDeobfClassName( )
	{
		return m_deobfuscatingTranslator.translateClass( m_entry.getClassName() );
	}
	
	public String getDeobfMethodName( )
	{
		return m_deobfuscatingTranslator.translate( m_entry );
	}
	
	@Override
	public String toString( )
	{
		String className = getDeobfClassName();
		if( className == null )
		{
			className = m_entry.getClassName();
		}
		
		String methodName = getDeobfMethodName();
		if( methodName == null )
		{
			methodName = m_entry.getName();
		}
		return className + "." + methodName + "()";
	}
	
	public void load( JarIndex index )
	{
		// get all method implementations
		List<MethodImplementationsTreeNode> nodes = Lists.newArrayList();
		for( String implementingClassName : index.getImplementingClasses( m_entry.getClassName() ) )
		{
			MethodEntry methodEntry = new MethodEntry(
				new ClassEntry( implementingClassName ),
				m_entry.getName(),
				m_entry.getSignature()
			);
			if( index.containsObfBehavior( methodEntry ) )
			{
				nodes.add( new MethodImplementationsTreeNode( m_deobfuscatingTranslator, methodEntry ) );
			}
		}
		
		// add them to this node
		for( MethodImplementationsTreeNode node : nodes )
		{
			this.add( node );
		}
	}
	
	public static MethodImplementationsTreeNode findNode( MethodImplementationsTreeNode node, MethodEntry entry )
	{
		// is this the node?
		if( node.getMethodEntry().equals( entry ) )
		{
			return node;
		}
		
		// recurse
		for( int i=0; i<node.getChildCount(); i++ )
		{
			MethodImplementationsTreeNode foundNode = findNode( (MethodImplementationsTreeNode)node.getChildAt( i ), entry );
			if( foundNode != null )
			{
				return foundNode;
			}
		}
		return null;
	}
}