package org.eclipse.aether.internal.impl;

/*
 * 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.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.impl.VersionRangeResolver;
import org.eclipse.aether.resolution.VersionRangeRequest;
import org.eclipse.aether.resolution.VersionRangeResolutionException;
import org.eclipse.aether.resolution.VersionRangeResult;
import org.eclipse.aether.util.version.GenericVersionScheme;
import org.eclipse.aether.version.InvalidVersionSpecificationException;
import org.eclipse.aether.version.Version;
import org.eclipse.aether.version.VersionConstraint;
import org.eclipse.aether.version.VersionScheme;

import static java.util.Objects.requireNonNull;

/**
 */
public class StubVersionRangeResolver
    implements VersionRangeResolver
{

    private final VersionScheme versionScheme = new GenericVersionScheme();

    public VersionRangeResult resolveVersionRange( RepositorySystemSession session, VersionRangeRequest request )
        throws VersionRangeResolutionException
    {
        requireNonNull( session, "session cannot be null" );
        requireNonNull( request, "request cannot be null" );
        VersionRangeResult result = new VersionRangeResult( request );
        try
        {
            VersionConstraint constraint = versionScheme.parseVersionConstraint( request.getArtifact().getVersion() );
            result.setVersionConstraint( constraint );
            if ( constraint.getRange() == null )
            {
                result.addVersion( constraint.getVersion() );
            }
            else
            {
                for ( int i = 1; i < 10; i++ )
                {
                    Version ver = versionScheme.parseVersion( Integer.toString( i ) );
                    if ( constraint.containsVersion( ver ) )
                    {
                        result.addVersion( ver );
                        if ( !request.getRepositories().isEmpty() )
                        {
                            result.setRepository( ver, request.getRepositories().get( 0 ) );
                        }
                    }
                }
            }
        }
        catch ( InvalidVersionSpecificationException e )
        {
            result.addException( e );
            throw new VersionRangeResolutionException( result );
        }

        return result;
    }

}
