package org.apache.maven.model.profile;
   
   /*
    * 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 java.util.Collections;
  import java.util.Enumeration;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Properties;
  
  /**
   * Describes the environmental context used to determine the activation status of profiles.
   *
   * @author Benjamin Bentmann
   */
  public class DefaultProfileActivationContext
      implements ProfileActivationContext
  {
  
      private List<String> activeProfileIds = Collections.emptyList();
  
      private List<String> inactiveProfileIds = Collections.emptyList();
  
      private Map<String, String> systemProperties = Collections.emptyMap();
  
      private Map<String, String> userProperties = Collections.emptyMap();
  
      private Map<String, String> projectProperties = Collections.emptyMap();
  
      private File projectDirectory;
  
      @Override
      public List<String> getActiveProfileIds()
      {
          return activeProfileIds;
      }
  
      /**
       * Sets the identifiers of those profiles that should be activated by explicit demand.
       *
       * @param activeProfileIds The identifiers of those profiles to activate, may be {@code null}.
       * @return This context, never {@code null}.
       */
      public DefaultProfileActivationContext setActiveProfileIds( List<String> activeProfileIds )
      {
          if ( activeProfileIds != null )
          {
              this.activeProfileIds = Collections.unmodifiableList( activeProfileIds );
          }
          else
          {
              this.activeProfileIds = Collections.emptyList();
          }
  
          return this;
      }
  
      @Override
      public List<String> getInactiveProfileIds()
      {
          return inactiveProfileIds;
      }
  
      /**
       * Sets the identifiers of those profiles that should be deactivated by explicit demand.
       *
       * @param inactiveProfileIds The identifiers of those profiles to deactivate, may be {@code null}.
       * @return This context, never {@code null}.
       */
      public DefaultProfileActivationContext setInactiveProfileIds( List<String> inactiveProfileIds )
      {
          if ( inactiveProfileIds != null )
          {
              this.inactiveProfileIds = Collections.unmodifiableList( inactiveProfileIds );
          }
          else
          {
              this.inactiveProfileIds = Collections.emptyList();
          }
  
         return this;
     }
 
     @Override
     public Map<String, String> getSystemProperties()
     {
         return systemProperties;
     }
 
     /**
      * Sets the system properties to use for interpolation and profile activation. The system properties are collected
      * from the runtime environment like {@link System#getProperties()} and environment variables.
      *
      * @param systemProperties The system properties, may be {@code null}.
      * @return This context, never {@code null}.
      */
     @SuppressWarnings( "unchecked" )
     public DefaultProfileActivationContext setSystemProperties( Properties systemProperties )
     {
         if ( systemProperties != null )
         {
             this.systemProperties = Collections.unmodifiableMap( (Map) systemProperties );
         }
         else
         {
             this.systemProperties = Collections.emptyMap();
         }
 
         return this;
     }
 
     /**
      * Sets the system properties to use for interpolation and profile activation. The system properties are collected
      * from the runtime environment like {@link System#getProperties()} and environment variables.
      *
      * @param systemProperties The system properties, may be {@code null}.
      * @return This context, never {@code null}.
      */
     public DefaultProfileActivationContext setSystemProperties( Map<String, String> systemProperties )
     {
         if ( systemProperties != null )
         {
             this.systemProperties = Collections.unmodifiableMap( systemProperties );
         }
         else
         {
             this.systemProperties = Collections.emptyMap();
         }
 
         return this;
     }
 
     @Override
     public Map<String, String> getUserProperties()
     {
         return userProperties;
     }
 
     /**
      * Sets the user properties to use for interpolation and profile activation. The user properties have been
      * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command
      * line.
      *
      * @param userProperties The user properties, may be {@code null}.
      * @return This context, never {@code null}.
      */
     @SuppressWarnings( "unchecked" )
     public DefaultProfileActivationContext setUserProperties( Properties userProperties )
     {
         if ( userProperties != null )
         {
             this.userProperties = Collections.unmodifiableMap( (Map) userProperties );
         }
         else
         {
             this.userProperties = Collections.emptyMap();
         }
 
         return this;
     }
 
     /**
      * Sets the user properties to use for interpolation and profile activation. The user properties have been
      * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command
      * line.
      *
      * @param userProperties The user properties, may be {@code null}.
      * @return This context, never {@code null}.
      */
     public DefaultProfileActivationContext setUserProperties( Map<String, String> userProperties )
     {
         if ( userProperties != null )
         {
             this.userProperties = Collections.unmodifiableMap( userProperties );
         }
         else
         {
             this.userProperties = Collections.emptyMap();
         }
 
         return this;
     }
 
     @Override
     public File getProjectDirectory()
     {
         return projectDirectory;
     }
 
     /**
      * Sets the base directory of the current project.
      *
      * @param projectDirectory The base directory of the current project, may be {@code null} if profile activation
      *                         happens in the context of metadata retrieval rather than project building.
      * @return This context, never {@code null}.
      */
     public DefaultProfileActivationContext setProjectDirectory( File projectDirectory )
     {
         this.projectDirectory = projectDirectory;
 
         return this;
     }
 
     @Override
     public Map<String, String> getProjectProperties()
     {
         return projectProperties;
     }
 
     public DefaultProfileActivationContext setProjectProperties( Properties projectProperties )
     {
         if ( projectProperties != null )
         {
 
             this.projectProperties = Collections.unmodifiableMap( toMap( projectProperties ) );
         }
         else
         {
             this.projectProperties = Collections.emptyMap();
         }
 
         return this;
     }
 
     private Map<String, String> toMap( Properties properties )
     {
         if ( properties == null )
         {
             return Collections.emptyMap();
         }
         Map<String, String> map = new HashMap<String, String>();
         Enumeration keys = properties.keys();
         while ( keys.hasMoreElements() )
         {
             String key = (String) keys.nextElement();
             map.put( key, properties.getProperty( key ) );
         }
         return map;
     }
 }