/*
 * 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.checkin;

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

import org.apache.commons.lang3.StringUtils;
import org.apache.maven.scm.ScmException;
import org.apache.maven.scm.ScmFileSet;
import org.apache.maven.scm.ScmVersion;
import org.apache.maven.scm.command.checkin.AbstractCheckInCommand;
import org.apache.maven.scm.command.checkin.CheckInScmResult;
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.FileUtils;
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:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
 * @author Olivier Lamy
 *
 */
public class SvnCheckInCommand extends AbstractCheckInCommand implements SvnCommand {
    /** {@inheritDoc} */
    protected CheckInScmResult executeCheckInCommand(
            ScmProviderRepository repo, ScmFileSet fileSet, String message, ScmVersion version) throws ScmException {
        if (version != null && StringUtils.isNotEmpty(version.getName())) {
            throw new ScmException("This provider command can't handle tags.");
        }

        File messageFile = FileUtils.createTempFile("maven-scm-", ".commit", null);

        try {
            FileUtils.fileWrite(messageFile.getAbsolutePath(), "UTF-8", message);
        } catch (IOException ex) {
            return new CheckInScmResult(
                    null,
                    "Error while making a temporary file for the commit message: " + ex.getMessage(),
                    null,
                    false);
        }

        Commandline cl = createCommandLine((SvnScmProviderRepository) repo, fileSet, messageFile);

        SvnCheckInConsumer consumer = new SvnCheckInConsumer(fileSet.getBasedir());

        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);
        } finally {
            try {
                FileUtils.forceDelete(messageFile);
            } catch (IOException ex) {
                // ignore
            }
        }

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

        return new CheckInScmResult(
                cl.toString(), consumer.getCheckedInFiles(), Integer.toString(consumer.getRevision()));
    }

    // ----------------------------------------------------------------------
    //
    // ----------------------------------------------------------------------

    public static Commandline createCommandLine(
            SvnScmProviderRepository repository, ScmFileSet fileSet, File messageFile) throws ScmException {
        Commandline cl = SvnCommandLineUtils.getBaseSvnCommandLine(fileSet.getBasedir(), repository);

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

        cl.createArg().setValue("--file");

        cl.createArg().setValue(messageFile.getAbsolutePath());

        cl.createArg().setValue("--encoding");

        cl.createArg().setValue("UTF-8");

        try {
            SvnCommandLineUtils.addTarget(cl, fileSet.getFileList());
        } catch (IOException e) {
            throw new ScmException("Can't create the targets file", e);
        }

        return cl;
    }
}
