/*
 * 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.git.gitexe.command.remoteinfo;

import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.maven.scm.command.remoteinfo.RemoteInfoScmResult;
import org.apache.maven.scm.util.AbstractConsumer;

/**
 * @author Bertrand Paquet
 */
public class GitRemoteInfoConsumer extends AbstractConsumer {

    /**
     * The pattern used to match branches
     */
    private static final Pattern BRANCH_PATTERN = Pattern.compile("^(.*)\\s+refs/heads/(.*)");

    /**
     * The pattern used to match tags
     */
    private static final Pattern TAGS_PATTERN = Pattern.compile("^(.*)\\s+refs/tags/(.*)");

    private final RemoteInfoScmResult remoteInfoScmResult;

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

    public GitRemoteInfoConsumer(String commandLine) {
        this.remoteInfoScmResult = new RemoteInfoScmResult(commandLine, new HashMap<>(), new HashMap<>());
    }

    // ----------------------------------------------------------------------
    // StreamConsumer Implementation
    // ----------------------------------------------------------------------

    /**
     * {@inheritDoc}
     */
    public void consumeLine(String line) {
        if (logger.isDebugEnabled()) {
            logger.debug(line);
        }

        Matcher matcher = BRANCH_PATTERN.matcher(line);
        if (matcher.matches()) {
            remoteInfoScmResult.getBranches().put(matcher.group(2), matcher.group(1));
        }

        matcher = TAGS_PATTERN.matcher(line);
        if (matcher.matches()) {
            remoteInfoScmResult.getTags().put(matcher.group(2), matcher.group(1));
        }
    }

    public RemoteInfoScmResult getRemoteInfoScmResult() {
        return remoteInfoScmResult;
    }
}
