/*
    * 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.profiles.activation;
  
  import java.util.Properties;
  
  import org.apache.maven.model.Activation;
  import org.apache.maven.model.ActivationProperty;
  import org.apache.maven.model.Profile;
  import org.codehaus.plexus.context.Context;
  import org.codehaus.plexus.context.ContextException;
  import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * SystemPropertyProfileActivator
   */
  @Deprecated
  public class SystemPropertyProfileActivator extends DetectedProfileActivator implements Contextualizable {
      private Properties properties;
  
      public void contextualize(Context context) throws ContextException {
          properties = (Properties) context.get("SystemProperties");
      }
  
      protected boolean canDetectActivation(Profile profile) {
          return profile.getActivation() != null && profile.getActivation().getProperty() != null;
      }
  
      public boolean isActive(Profile profile) throws ProfileActivationException {
          Activation activation = profile.getActivation();
  
          ActivationProperty property = activation.getProperty();
  
          if (property != null) {
              String name = property.getName();
              boolean reverseName = false;
  
              if (name == null) {
                  throw new ProfileActivationException(
                          "The property name is required to activate the profile '" + profile.getId() + "'");
              }
  
              if (name.startsWith("!")) {
                  reverseName = true;
                  name = name.substring(1);
              }
  
              String sysValue = properties.getProperty(name);
  
              String propValue = property.getValue();
              if (StringUtils.isNotEmpty(propValue)) {
                  boolean reverseValue = false;
                  if (propValue.startsWith("!")) {
                      reverseValue = true;
                      propValue = propValue.substring(1);
                  }
  
                  // we have a value, so it has to match the system value...
                  boolean result = propValue.equals(sysValue);
  
                  if (reverseValue) {
                      return !result;
                  } else {
                      return result;
                  }
              } else {
                  boolean result = StringUtils.isNotEmpty(sysValue);
  
                  if (reverseName) {
                      return !result;
                  } else {
                      return result;
                  }
              }
          }
  
          return false;
      }
  }