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<>();
  
      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;
      }
  }