/*
 * 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.
 */
package org.apache.maven.scm.provider.svn.svnexe.command.info;

import java.io.File;
import java.util.Iterator;

import org.apache.maven.scm.CommandParameters;
import org.apache.maven.scm.ScmException;
import org.apache.maven.scm.ScmFileSet;
import org.apache.maven.scm.ScmResult;
import org.apache.maven.scm.command.AbstractCommand;
import org.apache.maven.scm.command.info.InfoScmResult;
import org.apache.maven.scm.provider.ScmProviderRepository;
import org.apache.maven.scm.provider.svn.command.SvnCommand;
import org.apache.maven.scm.provider.svn.repository.SvnScmProviderRepository;
import org.apache.maven.scm.provider.svn.svnexe.command.SvnCommandLineUtils;
import org.codehaus.plexus.util.Os;
import org.codehaus.plexus.util.cli.CommandLineException;
import org.codehaus.plexus.util.cli.CommandLineUtils;
import org.codehaus.plexus.util.cli.Commandline;

/**
 * @author <a href="mailto:kenney@apache.org">Kenney Westerhof</a>
 *
 */
public class SvnInfoCommand extends AbstractCommand implements SvnCommand {

    /** {@inheritDoc} */
    protected ScmResult executeCommand(
            ScmProviderRepository repository, ScmFileSet fileSet, CommandParameters parameters) throws ScmException {
        return executeInfoCommand((SvnScmProviderRepository) repository, fileSet, parameters, false, null);
    }

    public InfoScmResult executeInfoCommand(
            SvnScmProviderRepository repository,
            ScmFileSet fileSet,
            CommandParameters parameters,
            boolean recursive,
            String revision)
            throws ScmException {
        Commandline cl = createCommandLine(repository, fileSet, recursive, revision);

        SvnInfoConsumer consumer = new SvnInfoConsumer();

        CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();

        if (logger.isInfoEnabled()) {
            logger.info("Executing: " + SvnCommandLineUtils.cryptPassword(cl));

            if (Os.isFamily(Os.FAMILY_WINDOWS)) {
                logger.info("Working directory: " + cl.getWorkingDirectory().getAbsolutePath());
            }
        }

        int exitCode;

        try {
            exitCode = SvnCommandLineUtils.execute(cl, consumer, stderr);
        } catch (CommandLineException ex) {
            throw new ScmException("Error while executing command.", ex);
        }

        if (exitCode != 0) {
            return new InfoScmResult(cl.toString(), "The svn command failed.", stderr.getOutput(), false);
        }

        return new InfoScmResult(cl.toString(), consumer.getInfoItems());
    }

    // set scope to protected to allow test to call it directly
    protected static Commandline createCommandLine(
            SvnScmProviderRepository repository, ScmFileSet fileSet, boolean recursive, String revision) {
        Commandline cl = SvnCommandLineUtils.getBaseSvnCommandLine(fileSet.getBasedir(), repository);

        cl.createArg().setValue("info");

        if (recursive) {
            cl.createArg().setValue("--recursive");
        }

        if (revision != null && !revision.isEmpty()) {
            cl.createArg().setValue("-r");

            cl.createArg().setValue(revision);
        }

        Iterator<File> it = fileSet.getFileList().iterator();

        while (it.hasNext()) {
            File file = (File) it.next();

            if (repository == null) {
                cl.createArg().setValue(file.getPath());
            } else {
                cl.createArg()
                        .setValue(repository.getUrl() + "/" + file.getPath().replace('\\', '/') + "@");
            }
        }

        return cl;
    }
}