package org.apache.maven.model.profile.activation;
   
   /*
    * 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.io.File;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import org.apache.maven.model.Activation;
  import org.apache.maven.model.ActivationFile;
  import org.apache.maven.model.Profile;
  import org.apache.maven.model.building.ModelProblem.Severity;
  import org.apache.maven.model.building.ModelProblem.Version;
  import org.apache.maven.model.building.ModelProblemCollector;
  import org.apache.maven.model.building.ModelProblemCollectorRequest;
  import org.apache.maven.model.path.ProfileActivationFilePathInterpolator;
  import org.apache.maven.model.profile.ProfileActivationContext;
  import org.codehaus.plexus.interpolation.InterpolationException;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * Determines profile activation based on the existence/absence of some file.
   * File name interpolation support is limited to <code>${basedir}</code> (since Maven 3,
   * see <a href="https://issues.apache.org/jira/browse/MNG-2363">MNG-2363</a>),
   * System properties and request properties.
   * <code>${project.basedir}</code> is intentionally not supported as this form would suggest that other
   * <code>${project.*}</code> expressions can be used, which is however beyond the design.
   *
   * @author Benjamin Bentmann
   * @see ActivationFile
   * @see org.apache.maven.model.validation.DefaultModelValidator#validateRawModel
   */
  @Named( "file" )
  @Singleton
  public class FileProfileActivator
      implements ProfileActivator
  {
  
      private final ProfileActivationFilePathInterpolator profileActivationFilePathInterpolator;
  
      @Inject
      public FileProfileActivator( ProfileActivationFilePathInterpolator profileActivationFilePathInterpolator )
      {
          this.profileActivationFilePathInterpolator = profileActivationFilePathInterpolator;
      }
  
      @Override
      public boolean isActive( Profile profile, ProfileActivationContext context, ModelProblemCollector problems )
      {
          Activation activation = profile.getActivation();
  
          if ( activation == null )
          {
              return false;
          }
  
          ActivationFile file = activation.getFile();
  
          if ( file == null )
          {
              return false;
          }
  
          String path;
          boolean missing;
  
          if ( StringUtils.isNotEmpty( file.getExists() ) )
          {
              path = file.getExists();
              missing = false;
          }
          else if ( StringUtils.isNotEmpty( file.getMissing() ) )
          {
              path = file.getMissing();
              missing = true;
          }
          else
          {
              return false;
          }
 
         try
         {
             path = profileActivationFilePathInterpolator.interpolate( path, context );
         }
         catch ( InterpolationException e )
         {
             problems.add( new ModelProblemCollectorRequest( Severity.ERROR, Version.BASE )
                     .setMessage( "Failed to interpolate file location " + path + " for profile " + profile.getId()
                             + ": " + e.getMessage() )
                     .setLocation( file.getLocation( missing ? "missing" : "exists" ) )
                     .setException( e ) );
             return false;
         }
 
         if ( path == null )
         {
             return false;
         }
 
         File f = new File( path );
 
         if ( !f.isAbsolute() )
         {
             return false;
         }
 
         boolean fileExists = f.exists();
 
         return missing != fileExists;
     }
 
     @Override
     public boolean presentInConfig( Profile profile, ProfileActivationContext context, ModelProblemCollector problems )
     {
         Activation activation = profile.getActivation();
 
         if ( activation == null )
         {
             return false;
         }
 
         ActivationFile file = activation.getFile();
 
         return file != null;
     }
 
 }