package org.codehaus.mojo.versions.change;

/*
 * 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 org.apache.maven.model.Model;
import org.apache.maven.plugin.logging.Log;
import org.codehaus.mojo.versions.rewriting.ModifiedPomXMLEventReader;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by IntelliJ IDEA.
 *
 * @author Stephen Connolly
 * @since 15-Sep-2010 16:05:27
 */
public class VersionChangerFactory
{
    private Model model = null;

    private ModifiedPomXMLEventReader pom = null;

    private Log log = null;

    public synchronized Model getModel()
    {
        return model;
    }

    public synchronized void setModel( Model model )
    {
        this.model = model;
    }

    public synchronized ModifiedPomXMLEventReader getPom()
    {
        return pom;
    }

    public synchronized void setPom( ModifiedPomXMLEventReader pom )
    {
        this.pom = pom;
    }

    public synchronized Log getLog()
    {
        return log;
    }

    public synchronized void setLog( Log log )
    {
        this.log = log;
    }

    private synchronized void checkState()
    {
        if ( model == null )
        {
            throw new IllegalStateException( "Model has not been specified" );
        }
        if ( pom == null )
        {
            throw new IllegalStateException( "Pom has not been specified" );
        }
        if ( log == null )
        {
            throw new IllegalStateException( "Log has not been specified" );
        }
    }

    public synchronized VersionChanger newPluginVersionChanger()
    {
        checkState();
        return new PluginVersionChanger( model, pom, log );
    }

    public synchronized VersionChanger newDependencyVersionChanger()
    {
        checkState();
        return new DependencyVersionChanger( model, pom, log );
    }

    public synchronized VersionChanger newProjectVersionChanger()
    {
        checkState();
        return new ProjectVersionChanger( model, pom, log );
    }

    public synchronized VersionChanger newParentVersionChanger()
    {
        checkState();
        return new ParentVersionChanger( model, pom, log );
    }

    public synchronized VersionChanger newVersionChanger()
    {
        checkState();
        VersionChanger[] delegates = new VersionChanger[] { newParentVersionChanger(), newProjectVersionChanger(),
            newDependencyVersionChanger(), newPluginVersionChanger() };
        return new CompositeVersionChanger( delegates );
    }

    public synchronized VersionChanger newVersionChanger( boolean processParent, boolean processProject,
                                                          boolean processDependencies, boolean processPlugins )
    {
        checkState();

        List<VersionChanger> delegates = new ArrayList<>();

        if ( processParent )
        {
            delegates.add( newParentVersionChanger() );
        }
        if ( processProject )
        {
            delegates.add( newProjectVersionChanger() );
        }
        if ( processDependencies )
        {
            delegates.add( newDependencyVersionChanger() );
        }
        if ( processPlugins )
        {
            delegates.add( newPluginVersionChanger() );
        }

        return new CompositeVersionChanger( delegates );
    }
}
