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package org.apache.maven.plugin;

/*
 * 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.ArrayList;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.plugin.descriptor.PluginDescriptor;

public class MavenPluginValidator
{
    private final Artifact pluginArtifact;

    private List<String> errors = new ArrayList<String>();

    private boolean firstDescriptor = true;

    public MavenPluginValidator( Artifact pluginArtifact )
    {
        this.pluginArtifact = pluginArtifact;
    }

    public void validate( PluginDescriptor pluginDescriptor )
    {
        /*
         * NOTE: For plugins that depend on other plugin artifacts the plugin realm contains more than one plugin
         * descriptor. However, only the first descriptor is of interest.
         */
        if ( !firstDescriptor )
        {
            return;
        }
        firstDescriptor = false;

        if ( !pluginArtifact.getGroupId().equals( pluginDescriptor.getGroupId() ) )
        {
            errors.add( "Plugin's descriptor contains the wrong group ID: " + pluginDescriptor.getGroupId() );
        }

        if ( !pluginArtifact.getArtifactId().equals( pluginDescriptor.getArtifactId() ) )
        {
            errors.add( "Plugin's descriptor contains the wrong artifact ID: " + pluginDescriptor.getArtifactId() );
        }

        if ( !pluginArtifact.getBaseVersion().equals( pluginDescriptor.getVersion() ) )
        {
            errors.add( "Plugin's descriptor contains the wrong version: " + pluginDescriptor.getVersion() );
        }
    }

    public boolean hasErrors()
    {
        return !errors.isEmpty();
    }

    public List<String> getErrors()
    {
        return errors;
    }
}