package org.apache.maven.configuration;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.File;
import java.io.IOException;
import java.io.StringReader;

import org.codehaus.plexus.PlexusTestCase;
import org.codehaus.plexus.util.xml.Xpp3Dom;
import org.codehaus.plexus.util.xml.Xpp3DomBuilder;
import org.codehaus.plexus.util.xml.pull.XmlPullParserException;

/**
 * @author Benjamin Bentmann
 */
public class DefaultBeanConfiguratorTest
    extends PlexusTestCase
{

    private BeanConfigurator configurator;

    @Override
    protected void setUp()
        throws Exception
    {
        super.setUp();

        configurator = lookup( BeanConfigurator.class );
    }

    @Override
    protected void tearDown()
        throws Exception
    {
        configurator = null;

        super.tearDown();
    }

    private Xpp3Dom toConfig( String xml )
    {
        try
        {
            return Xpp3DomBuilder.build( new StringReader( "<configuration>" + xml + "</configuration>" ) );
        }
        catch ( XmlPullParserException e )
        {
            throw new IllegalArgumentException( e );
        }
        catch ( IOException e )
        {
            throw new IllegalArgumentException( e );
        }
    }

    public void testMinimal()
        throws BeanConfigurationException
    {
        SomeBean bean = new SomeBean();

        Xpp3Dom config = toConfig( "<file>test</file>" );

        DefaultBeanConfigurationRequest request = new DefaultBeanConfigurationRequest();
        request.setBean( bean ).setConfiguration( config );

        configurator.configureBean( request );

        assertEquals( new File( "test" ), bean.file );
    }

    public void testPreAndPostProcessing()
        throws BeanConfigurationException
    {
        SomeBean bean = new SomeBean();

        Xpp3Dom config = toConfig( "<file>${test}</file>" );

        BeanConfigurationValuePreprocessor preprocessor = new BeanConfigurationValuePreprocessor()
        {
            public Object preprocessValue( String value, Class<?> type )
                throws BeanConfigurationException
            {
                if ( value != null && value.startsWith( "${" ) && value.endsWith( "}" ) )
                {
                    return value.substring( 2, value.length() - 1 );
                }
                return value;
            }
        };

        BeanConfigurationPathTranslator translator = new BeanConfigurationPathTranslator()
        {
            public File translatePath( File path )
            {
                return new File( "base", path.getPath() ).getAbsoluteFile();
            }
        };

        DefaultBeanConfigurationRequest request = new DefaultBeanConfigurationRequest();
        request.setBean( bean ).setConfiguration( config );
        request.setValuePreprocessor( preprocessor ).setPathTranslator( translator );

        configurator.configureBean( request );

        assertEquals( new File( "base/test" ).getAbsoluteFile(), bean.file );
    }

    public void testChildConfigurationElement()
        throws BeanConfigurationException
    {
        SomeBean bean = new SomeBean();

        Xpp3Dom config = toConfig( "<wrapper><file>test</file></wrapper>" );

        DefaultBeanConfigurationRequest request = new DefaultBeanConfigurationRequest();
        request.setBean( bean ).setConfiguration( config, "wrapper" );

        configurator.configureBean( request );

        assertEquals( new File( "test" ), bean.file );
    }

    static class SomeBean
    {

        File file;

    }

}
