package org.apache.maven.archiva.web.action.admin.repositories;

/*
 * 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.commons.lang.StringUtils;
import org.apache.maven.archiva.configuration.Configuration;
import org.apache.maven.archiva.configuration.RepositoryGroupConfiguration;

/**
 * SortRepositoriesAction
 * 
 * @author
 * @version
 * @plexus.component role="com.opensymphony.xwork2.Action" role-hint="sortRepositoriesAction"
 */
public class SortRepositoriesAction 
    extends AbstractRepositoriesAdminAction
{
    private String repoGroupId;
	
    private String targetRepo;
	
    public String sortDown()
    {
        Configuration config = archivaConfiguration.getConfiguration();
		
        List<String> repositories = getRepositoriesFromGroup();
		
        int idx = findTargetRepository( repositories, targetRepo );
		
        if ( idx >= 0 && validIndex( repositories, idx + 1 ) )
        {
            repositories.remove( idx );
            repositories.add( idx + 1, targetRepo );
        }
		
        return saveConfiguration( config );
    }
	
    public String sortUp()
    {
        Configuration config = archivaConfiguration.getConfiguration();
		
        List<String> repositories = getRepositoriesFromGroup();

        int idx = findTargetRepository( repositories, targetRepo );
		
        if ( idx >= 0 && validIndex( repositories, idx - 1 ) )
        {
            repositories.remove( idx );
            repositories.add( idx - 1, targetRepo );
        }
		
        return saveConfiguration( config );
    }
	
    public String getRepoGroupId()
    {
        return repoGroupId;
    }
	
    public void setRepoGroupId( String repoGroupId )
    {
        this.repoGroupId = repoGroupId;
    }
	
    public String getTargetRepo()
    {
        return targetRepo;
    }
	
    public void setTargetRepo( String targetRepo )
    {
        this.targetRepo = targetRepo;
    }
	
    private int findTargetRepository( List<String> repositories, String targetRepository )
    {
        int idx = ( -1 );
		
        for ( int i = 0; i < repositories.size(); i++ )
        {
            if ( StringUtils.equals( targetRepository, repositories.get(i) ) )
            {
                idx = i;
                break;
            }
        }
        return idx;
    }
	
    private List<String> getRepositoriesFromGroup()
    {
        Configuration config = archivaConfiguration.getConfiguration();
        RepositoryGroupConfiguration repoGroup = config.findRepositoryGroupById( repoGroupId );
        return repoGroup.getRepositories();
    }
	
    private boolean validIndex( List<String> repositories, int idx )
	{
	    return ( idx >= 0 ) && ( idx < repositories.size() );
	}
}