/*
    * 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.plugins.enforcer.internal;
  
  import java.io.File;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.function.Supplier;
  
  import org.apache.maven.enforcer.rule.api.EnforcerRuleHelper;
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.plugin.logging.Log;
  import org.codehaus.plexus.PlexusContainer;
  import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluationException;
  import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
  import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
  
  /**
   * Default implementation of the EnforcementRuleHelper interface. This is used to help retrieve information from the
   * session and provide useful elements like the log.
   *
   * @author <a href="mailto:brianf@apache.org">Brian Fox</a>
   */
  public class DefaultEnforcementRuleHelper implements EnforcerRuleHelper {
  
      /** The log. */
      private Log log;
  
      /** The evaluator. */
      private ExpressionEvaluator evaluator;
  
      /** The container. */
      private PlexusContainer container;
  
      /** A cache. */
      private Map<String, Object> cache;
  
      /**
       * Instantiates a new default enforcement rule helper.
       *
       * @param session the session
       * @param evaluator the evaluator
       * @param log the log
       * @param container the container
       */
      public DefaultEnforcementRuleHelper(
              MavenSession session, ExpressionEvaluator evaluator, Log log, PlexusContainer container) {
          this.evaluator = evaluator;
          this.log = log;
          if (container != null) {
              this.container = container;
          } else {
              this.container = session.getContainer();
          }
  
          this.cache = new HashMap<>();
      }
  
      @Override
      public Log getLog() {
          return log;
      }
  
      @Override
      public File alignToBaseDirectory(File theFile) {
          return evaluator.alignToBaseDirectory(theFile);
      }
  
      @Override
      public Object evaluate(String theExpression) throws ExpressionEvaluationException {
          return evaluator.evaluate(theExpression);
      }
  
      @Override
      public <T> T getComponent(Class<T> clazz) throws ComponentLookupException {
          return container.lookup(clazz);
      }
  
      @Override
      public Object getComponent(String theComponentKey) throws ComponentLookupException {
          return container.lookup(theComponentKey);
      }
 
     @Override
     public Object getComponent(String theRole, String theRoleHint) throws ComponentLookupException {
         return container.lookup(theRole, theRoleHint);
     }
 
     @Override
     public List<Object> getComponentList(String theRole) throws ComponentLookupException {
         return container.lookupList(theRole);
     }
 
     @Override
     public Map<String, Object> getComponentMap(String theRole) throws ComponentLookupException {
         return container.lookupMap(theRole);
     }
 
     @Override
     public <T> T getComponent(Class<T> clazz, String roleHint) throws ComponentLookupException {
         return container.lookup(clazz, roleHint);
     }
 
     @Override
     public PlexusContainer getContainer() {
         return container;
     }
 
     @Override
     public Object getCache(String key, Supplier<?> producer) {
         return cache.computeIfAbsent(key, (x) -> producer.get());
     }
 }