package org.apache.maven.plugin.assembly.archive.phase;

/*
 * 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.Iterator;
import java.util.List;

import org.apache.maven.plugin.assembly.AssemblerConfigurationSource;
import org.apache.maven.plugin.assembly.AssemblyContext;
import org.apache.maven.plugin.assembly.archive.ArchiveCreationException;
import org.apache.maven.plugin.assembly.format.AssemblyFormattingException;
import org.apache.maven.plugin.assembly.format.FileFormatter;
import org.apache.maven.plugin.assembly.model.Assembly;
import org.apache.maven.plugin.assembly.model.FileItem;
import org.apache.maven.plugin.assembly.utils.AssemblyFormatUtils;
import org.apache.maven.plugin.assembly.utils.TypeConversionUtils;
import org.codehaus.plexus.archiver.Archiver;
import org.codehaus.plexus.archiver.ArchiverException;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.logging.AbstractLogEnabled;

/**
 * Handles the top-level &lt;files/&gt; section of the assembly descriptor.
 * 
 * @version $Id$
 */
@Component( role = AssemblyArchiverPhase.class, hint = "file-items" )
public class FileItemAssemblyPhase
    extends AbstractLogEnabled
    implements AssemblyArchiverPhase
{

    /**
     * {@inheritDoc}
     */
    public void execute( final Assembly assembly, final Archiver archiver,
                         final AssemblerConfigurationSource configSource, final AssemblyContext context )
        throws ArchiveCreationException, AssemblyFormattingException
    {
        final List<FileItem> fileList = assembly.getFiles();
        final File basedir = configSource.getBasedir();

        final FileFormatter fileFormatter = new FileFormatter( configSource, getLogger() );
        for (final FileItem fileItem : fileList) {
            final String sourcePath = fileItem.getSource();

            // ensure source file is in absolute path for reactor build to work
            File source = new File(sourcePath);

            // save the original sourcefile's name, because filtration may
            // create a temp file with a different name.
            final String sourceName = source.getName();

            if (!source.isAbsolute()) {
                source = new File(basedir, sourcePath);
            }

            source =
                    fileFormatter.format(source, fileItem.isFiltered(), fileItem.getLineEnding(),
                            configSource.getEncoding());

            String destName = fileItem.getDestName();

            if (destName == null) {
                destName = sourceName;
            }

            final String outputDirectory =
                    AssemblyFormatUtils.getOutputDirectory(fileItem.getOutputDirectory(), configSource.getProject(), null,
                            configSource.getFinalName(), configSource);

            String target;

            // omit the last char if ends with / or \\
            if (outputDirectory.endsWith("/") || outputDirectory.endsWith("\\")) {
                target = outputDirectory + destName;
            } else if (outputDirectory.length() < 1) {
                target = destName;
            } else {
                target = outputDirectory + "/" + destName;
            }

            try {
                archiver.addFile(source, target, TypeConversionUtils.modeToInt(fileItem.getFileMode(), getLogger()));
            } catch (final ArchiverException e) {
                throw new ArchiveCreationException("Error adding file to archive: " + e.getMessage(), e);
            }
        }
    }

}