/*
    * 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.internal.impl.model;
  
  import java.nio.file.Path;
  
  import org.apache.maven.api.di.Inject;
  import org.apache.maven.api.di.Named;
  import org.apache.maven.api.di.Singleton;
  import org.apache.maven.api.model.ActivationFile;
  import org.apache.maven.api.services.model.PathTranslator;
  import org.apache.maven.api.services.model.ProfileActivationContext;
  import org.apache.maven.api.services.model.RootLocator;
  import org.codehaus.plexus.interpolation.AbstractValueSource;
  import org.codehaus.plexus.interpolation.InterpolationException;
  import org.codehaus.plexus.interpolation.MapBasedValueSource;
  import org.codehaus.plexus.interpolation.RegexBasedInterpolator;
  
  /**
   * Finds an absolute path for {@link ActivationFile#getExists()} or {@link ActivationFile#getMissing()}
   *
   */
  @Named
  @Singleton
  public class ProfileActivationFilePathInterpolator {
  
      private final PathTranslator pathTranslator;
  
      private final RootLocator rootLocator;
  
      @Inject
      public ProfileActivationFilePathInterpolator(PathTranslator pathTranslator, RootLocator rootLocator) {
          this.pathTranslator = pathTranslator;
          this.rootLocator = rootLocator;
      }
  
      /**
       * Interpolates given {@code path}.
       *
       * @return absolute path or {@code null} if the input was {@code null}
       */
      public String interpolate(String path, ProfileActivationContext context) throws InterpolationException {
          if (path == null) {
              return null;
          }
  
          RegexBasedInterpolator interpolator = new RegexBasedInterpolator();
  
          Path basedir = context.getProjectDirectory();
  
          if (basedir != null) {
              interpolator.addValueSource(new AbstractValueSource(false) {
                  @Override
                  public Object getValue(String expression) {
                      if ("basedir".equals(expression) || "project.basedir".equals(expression)) {
                          return basedir.toAbsolutePath().toString();
                      }
                      return null;
                  }
              });
          } else if (path.contains("${basedir}")) {
              return null;
          }
  
          interpolator.addValueSource(new AbstractValueSource(false) {
              @Override
              public Object getValue(String expression) {
                  if ("rootDirectory".equals(expression)) {
                      Path root = rootLocator.findMandatoryRoot(basedir);
                      return root.toFile().getAbsolutePath();
                  }
                  return null;
              }
          });
  
          interpolator.addValueSource(new MapBasedValueSource(context.getProjectProperties()));
          interpolator.addValueSource(new MapBasedValueSource(context.getUserProperties()));
          interpolator.addValueSource(new MapBasedValueSource(context.getSystemProperties()));
  
          String absolutePath = interpolator.interpolate(path, "");
  
          return pathTranslator.alignToBaseDirectory(absolutePath, basedir);
      }
 }