/*******************************************************************************
 * 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.mapping;

import java.io.Serializable;


public class ClassEntry implements Entry, Serializable
{
	private static final long serialVersionUID = 4235460580973955811L;
	
	private String m_name;
	
	public ClassEntry( String className )
	{
		if( className == null )
		{
			throw new IllegalArgumentException( "Class name cannot be null!" );
		}
		if( className.indexOf( '.' ) >= 0 )
		{
			throw new IllegalArgumentException( "Class name must be in JVM format. ie, path/to/package/class$inner : " + className );
		}
		
		m_name = className;
		
		if( isInnerClass() && getInnerClassName().indexOf( '/' ) >= 0 )
		{
			throw new IllegalArgumentException( "Inner class must not have a package: " + className );
		}
	}
	
	public ClassEntry( ClassEntry other )
	{
		m_name = other.m_name;
	}
	
	@Override
	public ClassEntry getClassEntry( )
	{
		return this;
	}

	@Override
	public String getName( )
	{
		return m_name;
	}
	
	@Override
	public String getClassName( )
	{
		return m_name;
	}
	
	@Override
	public int hashCode( )
	{
		return m_name.hashCode();
	}
	
	@Override
	public boolean equals( Object other )
	{
		if( other instanceof ClassEntry )
		{
			return equals( (ClassEntry)other );
		}
		return false;
	}
	
	public boolean equals( ClassEntry other )
	{
		return m_name.equals( other.m_name );
	}
	
	@Override
	public String toString( )
	{
		return m_name;
	}
	
	public boolean isInnerClass( )
	{
		return m_name.lastIndexOf( '$' ) >= 0;
	}
	
	public String getOuterClassName( )
	{
		if( isInnerClass() )
		{
			return m_name.substring( 0, m_name.lastIndexOf( '$' ) );
		}
		return m_name;
	}
	
	public String getInnerClassName( )
	{
		if( !isInnerClass() )
		{
			throw new Error( "This is not an inner class!" );
		}
		return m_name.substring( m_name.lastIndexOf( '$' ) + 1 );
	}
	
	public ClassEntry getOuterClassEntry( )
	{
		return new ClassEntry( getOuterClassName() );
	}
	
	public boolean isInDefaultPackage( )
	{
		return m_name.indexOf( '/' ) < 0;
	}

	public String getPackageName( )
	{
		int pos = m_name.lastIndexOf( '/' );
		if( pos > 0 )
		{
			return m_name.substring( 0, pos );
		}
		return null;
	}

	public String getSimpleName( )
	{
		int pos = m_name.lastIndexOf( '/' );
		if( pos > 0 )
		{
			return m_name.substring( pos + 1 );
		}
		return m_name;
	}
}