/*
    * 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.
   */
  package org.apache.maven.model.profile;
  
  import static java.util.stream.Collectors.toMap;
  
  import java.io.File;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import java.util.Properties;
  import java.util.stream.Collectors;
  
  /**
   * 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) {
          this.activeProfileIds = unmodifiable(activeProfileIds);
          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) {
          this.inactiveProfileIds = unmodifiable(inactiveProfileIds);
          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) {
          return setSystemProperties(toMap(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}.
      */
     public DefaultProfileActivationContext setSystemProperties(Map<String, String> systemProperties) {
         this.systemProperties = unmodifiable(systemProperties);
         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) {
         return setUserProperties(toMap(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}.
      */
     public DefaultProfileActivationContext setUserProperties(Map<String, String> userProperties) {
         this.userProperties = unmodifiable(userProperties);
         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) {
         return setProjectProperties(toMap(projectProperties));
     }
 
     public DefaultProfileActivationContext setProjectProperties(Map<String, String> projectProperties) {
         this.projectProperties = unmodifiable(projectProperties);
 
         return this;
     }
 
     private static List<String> unmodifiable(List<String> list) {
         return list != null ? Collections.unmodifiableList(list) : Collections.emptyList();
     }
 
     private static Map<String, String> unmodifiable(Map<String, String> map) {
         return map != null ? Collections.unmodifiableMap(map) : Collections.emptyMap();
     }
 
     private static Map<String, String> toMap(Properties properties) {
         if (properties != null && !properties.isEmpty()) {
             return properties.entrySet().stream()
                     .collect(Collectors.toMap(e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue())));
 
         } else {
             return null;
         }
     }
 }