/*
    * 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.shared.filtering;
  
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.io.Reader;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.project.MavenProject;
  
  /**
   * @author Kristian Rosenvold
   */
  @Singleton
  @Named
  public class DefaultMavenReaderFilter extends BaseFilter implements MavenReaderFilter {
      @Override
      public Reader filter(
              Reader from,
              boolean filtering,
              MavenProject mavenProject,
              List<String> filters,
              boolean escapedBackslashesInFilePath,
              MavenSession mavenSession)
              throws MavenFilteringException {
          MavenResourcesExecution mre = new MavenResourcesExecution();
          mre.setMavenProject(mavenProject);
          mre.setFileFilters(filters);
          mre.setEscapeWindowsPaths(escapedBackslashesInFilePath);
          mre.setMavenSession(mavenSession);
          mre.setInjectProjectBuildFilters(true);
  
          List<FilterWrapper> filterWrappers = getDefaultFilterWrappers(mre);
          return filter(from, filtering, filterWrappers);
      }
  
      @Override
      public Reader filter(MavenReaderFilterRequest mavenFileFilterRequest) throws MavenFilteringException {
          List<FilterWrapper> filterWrappers = getDefaultFilterWrappers(mavenFileFilterRequest);
          return filter(mavenFileFilterRequest.getFrom(), mavenFileFilterRequest.isFiltering(), filterWrappers);
      }
  
      @Override
      public Reader filter(Reader from, boolean filtering, List<FilterWrapper> filterWrappers) {
          return filterWrap(from, filtering ? filterWrappers : Collections.<FilterWrapper>emptyList());
      }
  
      private static Reader filterWrap(Reader from, Iterable<FilterWrapper> wrappers) {
          Reader reader = from;
          for (FilterWrapper wrapper : wrappers) {
              reader = wrapper.getReader(reader);
          }
          return reader;
      }
  }