package org.apache.maven.shared.release;

/*
 * 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.util.List;

import org.apache.maven.plugin.logging.Log;
import org.codehaus.plexus.util.StringUtils;

import static org.apache.maven.shared.utils.logging.MessageUtils.buffer;

/**
 * @author Hervé Boutemy
 */
public class DefaultReleaseManagerListener
    implements ReleaseManagerListener
{
    private final Log log;

    private final boolean dryRun;

    private String goal;

    private List<String> phases;

    private int currentPhase;

    public DefaultReleaseManagerListener( Log log )
    {
        this( log, false );
    }

    public DefaultReleaseManagerListener( Log log, boolean dryRun )
    {
        this.log = log;
        this.dryRun = dryRun;
    }

    private void nextPhase( String name )
    {
        currentPhase++;
        if ( !name.equals( phases.get( currentPhase ) ) )
        {
            log.warn( "inconsistent phase name: expected '" + phases.get( currentPhase ) + "' but got '" + name + "'" );
        }
    }

    public void goalStart( String goal, List<String> phases )
    {
        log.info( "starting " + buffer().strong( goal ) + " goal" + ( dryRun ? " in dry-run mode" : "" )
            + ", composed of " + phases.size() + " phases: " + StringUtils.join( phases.iterator(), ", " ) );
        currentPhase = -1;
        this.phases = phases;
        this.goal = goal;
    }

    public void phaseStart( String name )
    {
        if ( goal == null || ( ( currentPhase + 1 ) >= phases.size() ) )
        {
            // out of goal phase
            log.info( "phase " + buffer().strong( name ) + ( dryRun ? " (dry-run)" : "" ) );
            return;
        }

        nextPhase( name );
        log.info( buffer().strong( "[" + goal + ( dryRun ? " dry-run" : "" ) + "] " ).toString() + ( currentPhase + 1 )
            + "/" + phases.size() + " " + buffer().strong( name ) );
    }

    public void phaseEnd()
    {
        // NOOP
    }

    public void phaseSkip( String name )
    {
        nextPhase( name );
    }

    public void goalEnd()
    {
        goal = null;
        phases = null;
    }

    public void error( String reason )
    {
        log.error( "error during phase " + ( currentPhase + 1 ) + "/" + phases.size() + " " + phases.get( currentPhase )
            + ": " + reason );
    }
}