package org.apache.maven.shared.io.scan.mapping;

/*
 * 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.util.Collections;
import java.util.HashSet;
import java.util.Set;

/**
 * @author jdcasey
 * @version $Id: SuffixMapping.java 1719477 2015-12-11 17:33:58Z khmarbaise $
 */
public final class SuffixMapping
    implements SourceMapping
{
    private final String sourceSuffix;

    private final Set<String> targetSuffixes;

    /**
     * @param sourceSuffix source suffix.
     * @param targetSuffix target suffix.
     */
    public SuffixMapping( String sourceSuffix, String targetSuffix )
    {
        this.sourceSuffix = sourceSuffix;

        this.targetSuffixes = Collections.singleton( targetSuffix );
    }

    /**
     * @param sourceSuffix source suffix.
     * @param targetSuffixes target suffixes.
     */
    public SuffixMapping( String sourceSuffix, Set<String> targetSuffixes )
    {
        this.sourceSuffix = sourceSuffix;

        this.targetSuffixes = targetSuffixes;
    }

    /** {@inheritDoc} */
    public Set<File> getTargetFiles( File targetDir, String source )
    {
        Set<File> targetFiles = new HashSet<File>();

        if ( source.endsWith( sourceSuffix ) )
        {
            String base = source.substring( 0, source.length() - sourceSuffix.length() );

            for ( String suffix : targetSuffixes )
            {
                targetFiles.add( new File( targetDir, base + suffix ) );
            }
        }

        return targetFiles;
    }
}
