package org.apache.maven.model.building;

/*
 * 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.net.URI;

import org.apache.maven.building.FileSource;

/**
 * Wraps an ordinary {@link File} as a model source.
 *
 * @author Benjamin Bentmann
 */
public class FileModelSource extends FileSource implements ModelSource2
{

    /**
     * Creates a new model source backed by the specified file.
     *
     * @param pomFile The POM file, must not be {@code null}.
     */
    public FileModelSource( File pomFile )
    {
        super( pomFile );
    }
    
    /**
     * 
     * @return the file of this source
     * 
     * @deprecated instead use {@link #getFile()}
     */
    @Deprecated
    public File getPomFile()
    {
        return getFile();
    }
    
    @Override
    public ModelSource2 getRelatedSource( String relPath )
    {
        relPath = relPath.replace( '\\', File.separatorChar ).replace( '/', File.separatorChar );

        File relatedPom = new File( getFile().getParentFile(), relPath );

        if ( relatedPom.isDirectory() )
        {
            // TODO figure out how to reuse ModelLocator.locatePom(File) here
            relatedPom = new File( relatedPom, "pom.xml" );
        }

        if ( relatedPom.isFile() && relatedPom.canRead() )
        {
            return new FileModelSource( new File( relatedPom.toURI().normalize() ) );
        }

        return null;
    }

    @Override
    public URI getLocationURI()
    {
        return getFile().toURI();
    }

    @Override
    public boolean equals( Object obj ) 
    {
        if ( this == obj ) 
        {
            return true;
        }
        
        if ( !( obj instanceof FileModelSource ) ) 
        {
            return false;
        }
        FileModelSource other = ( FileModelSource ) obj;
        return getFile().equals( other.getFile() );
    }

    @Override
    public int hashCode() 
    {
        return getFile().hashCode(); 
    }

}
