/*******************************************************************************
 * Copyright (c) 2010-2011 Sonatype, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution.
 * The Eclipse Public License is available at
 *   http://www.eclipse.org/legal/epl-v10.html
 * The Apache License v2.0 is available at
 *   http://www.apache.org/licenses/LICENSE-2.0.html
 * You may elect to redistribute this code under either of these licenses.
 *******************************************************************************/
package org.sonatype.guice.bean.binders;

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

import org.sonatype.guice.bean.converters.FileTypeConverter;
import org.sonatype.guice.bean.converters.URLTypeConverter;
import org.sonatype.guice.bean.locators.BeanLocator;

import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.spi.Element;
import com.google.inject.spi.Elements;

/**
 * Guice {@link Module} that automatically adds {@link BeanLocator}-backed bindings for non-local bean dependencies.
 */
public class WireModule
    implements Module
{
    // ----------------------------------------------------------------------
    // Implementation fields
    // ----------------------------------------------------------------------

    private final List<Module> modules;

    // ----------------------------------------------------------------------
    // Constructors
    // ----------------------------------------------------------------------

    public WireModule( final Module... modules )
    {
        this( Arrays.asList( modules ) );
    }

    public WireModule( final List<Module> modules )
    {
        this.modules = modules;
    }

    // ----------------------------------------------------------------------
    // Public methods
    // ----------------------------------------------------------------------

    public void configure( final Binder binder )
    {
        final ElementAnalyzer analyzer = getAnalyzer( binder );
        for ( final Module m : modules )
        {
            for ( final Element e : Elements.getElements( m ) )
            {
                e.acceptVisitor( analyzer );
            }
        }
        analyzer.apply( wiring( binder ) );
    }

    // ----------------------------------------------------------------------
    // Customizable methods
    // ----------------------------------------------------------------------

    protected Wiring wiring( final Binder binder )
    {
        binder.install( new FileTypeConverter() );
        binder.install( new URLTypeConverter() );

        return new LocatorWiring( binder );
    }

    // ----------------------------------------------------------------------
    // Implementation methods
    // ----------------------------------------------------------------------

    ElementAnalyzer getAnalyzer( final Binder binder )
    {
        return new ElementAnalyzer( binder );
    }
}
