/*
    * 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.archiver;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.PrintWriter;
  import java.io.StringReader;
  import java.io.StringWriter;
  import java.nio.file.Files;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Properties;
  
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.project.MavenProject;
  import org.codehaus.plexus.archiver.Archiver;
  
  /**
   * This class is responsible for creating the <code>pom.properties</code> file
   * in <code>META-INF/maven/${groupId}/${artifactId}</code>.
   *
   * @author slachiewicz
   * @version $Id: $Id
   */
  public class PomPropertiesUtil {
      private Properties loadPropertiesFile(File file) throws IOException {
          Properties fileProps = new Properties();
          try (InputStream istream = Files.newInputStream(file.toPath())) {
              fileProps.load(istream);
              return fileProps;
          }
      }
  
      private boolean sameContents(Properties props, File file) throws IOException {
          if (!file.isFile()) {
              return false;
          }
  
          Properties fileProps = loadPropertiesFile(file);
          return fileProps.equals(props);
      }
  
      private void createPropertiesFile(Properties properties, File outputFile, boolean forceCreation)
              throws IOException {
          File outputDir = outputFile.getParentFile();
          if (outputDir != null && !outputDir.isDirectory() && !outputDir.mkdirs()) {
              throw new IOException("Failed to create directory: " + outputDir);
          }
          if (!forceCreation && sameContents(properties, outputFile)) {
              return;
          }
  
          try (PrintWriter pw = new PrintWriter(outputFile, "ISO-8859-1");
                  StringWriter sw = new StringWriter()) {
  
              properties.store(sw, null);
  
              List<String> lines = new ArrayList<>();
              try (BufferedReader r = new BufferedReader(new StringReader(sw.toString()))) {
                  String line;
                  while ((line = r.readLine()) != null) {
                      if (!line.startsWith("#")) {
                          lines.add(line);
                      }
                  }
              }
  
              Collections.sort(lines);
              for (String l : lines) {
                  pw.println(l);
              }
          }
      }
  
      /**
       * Creates the pom.properties file.
       *
       * @param session {@link org.apache.maven.execution.MavenSession}
       * @param project {@link org.apache.maven.project.MavenProject}
      * @param archiver {@link org.codehaus.plexus.archiver.Archiver}
      * @param customPomPropertiesFile optional custom pom properties file
      * @param pomPropertiesFile The pom properties file.
      * @param forceCreation force creation true/false
      * @throws org.codehaus.plexus.archiver.ArchiverException archiver exception.
      * @throws java.io.IOException IO exception.
      * @deprecated please use {@link #createPomProperties(MavenProject, Archiver, File, File, boolean)}
      */
     @Deprecated
     public void createPomProperties(
             MavenSession session,
             MavenProject project,
             Archiver archiver,
             File customPomPropertiesFile,
             File pomPropertiesFile,
             boolean forceCreation)
             throws IOException {
         createPomProperties(project, archiver, customPomPropertiesFile, pomPropertiesFile, forceCreation);
     }
 
     /**
      * Creates the pom.properties file.
      *
      * @param project                 {@link org.apache.maven.project.MavenProject}
      * @param archiver                {@link org.codehaus.plexus.archiver.Archiver}
      * @param customPomPropertiesFile optional custom pom properties file
      * @param pomPropertiesFile       The pom properties file.
      * @param forceCreation           force creation true/false
      * @throws org.codehaus.plexus.archiver.ArchiverException archiver exception.
      * @throws java.io.IOException                            IO exception.
      */
     public void createPomProperties(
             MavenProject project,
             Archiver archiver,
             File customPomPropertiesFile,
             File pomPropertiesFile,
             boolean forceCreation)
             throws IOException {
         final String groupId = project.getGroupId();
         final String artifactId = project.getArtifactId();
         final String version = project.getVersion();
 
         Properties p;
 
         if (customPomPropertiesFile != null) {
             p = loadPropertiesFile(customPomPropertiesFile);
         } else {
             p = new Properties();
         }
 
         p.setProperty("groupId", groupId);
 
         p.setProperty("artifactId", artifactId);
 
         p.setProperty("version", version);
 
         createPropertiesFile(p, pomPropertiesFile, forceCreation);
 
         archiver.addFile(pomPropertiesFile, "META-INF/maven/" + groupId + "/" + artifactId + "/pom.properties");
     }
 }