/*
    * 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.source;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.file.Path;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.Objects;
  
  import org.apache.maven.archiver.MavenArchiveConfiguration;
  import org.apache.maven.archiver.MavenArchiver;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.DependencyResolutionRequiredException;
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.model.Resource;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.project.MavenProjectHelper;
  import org.codehaus.plexus.archiver.Archiver;
  import org.codehaus.plexus.archiver.ArchiverException;
  import org.codehaus.plexus.archiver.jar.JarArchiver;
  import org.codehaus.plexus.archiver.jar.ManifestException;
  import org.codehaus.plexus.archiver.util.DefaultFileSet;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * Base class for bundling sources into a jar archive.
   *
   * @since 2.0.3
   */
  public abstract class AbstractSourceJarMojo extends AbstractMojo {
      private static final String[] DEFAULT_INCLUDES = new String[] {"**/**"};
  
      private static final String[] DEFAULT_EXCLUDES = new String[] {};
  
      /**
       * List of files to include. Specified as fileset patterns which are relative to the input directory whose contents
       * is being packaged into the JAR.
       *
       * @since 2.1
       */
      @Parameter
      private String[] includes;
  
      /**
       * List of files to exclude. Specified as fileset patterns which are relative to the input directory whose contents
       * is being packaged into the JAR.
       *
       * @since 2.1
       */
      @Parameter
      private String[] excludes;
  
      /**
       * Exclude commonly excluded files such as SCM configuration. These are defined in the plexus
       * FileUtils.getDefaultExcludes()
       *
       * @since 2.1
       */
      @Parameter(property = "maven.source.useDefaultExcludes", defaultValue = "true")
      private boolean useDefaultExcludes;
  
      /**
       * The Maven Project Object
       */
      @Parameter(defaultValue = "${project}", readonly = true, required = true)
      private MavenProject project;
  
      /**
       * The Jar archiver.
       */
      @Component(role = Archiver.class, hint = "jar")
      private JarArchiver jarArchiver;
  
      /**
       * The archive configuration to use. See <a href="http://maven.apache.org/shared/maven-archiver/index.html">Maven
      * Archiver Reference</a>. <br/>
      * <b>Note: Since 3.0.0 the resulting archives contain a maven descriptor. If you need to suppress the generation of
      * the maven descriptor you can simply achieve this by using the
      * <a href="http://maven.apache.org/shared/maven-archiver/index.html#archive">archiver configuration</a>.</b>.
      *
      * @since 2.1
      */
     @Parameter
     private MavenArchiveConfiguration archive = new MavenArchiveConfiguration();
 
     /**
      * Path to the default MANIFEST file to use. It will be used if <code>useDefaultManifestFile</code> is set to
      * <code>true</code>.
      *
      * @since 2.1
      */
     // CHECKSTYLE_OFF: LineLength
     @Parameter(
             defaultValue = "${project.build.outputDirectory}/META-INF/MANIFEST.MF",
             readonly = false,
             required = true)
     // CHECKSTYLE_ON: LineLength
     private File defaultManifestFile;
 
     /**
      * Set this to <code>true</code> to enable the use of the <code>defaultManifestFile</code>. <br/>
      *
      * @since 2.1
      */
     @Parameter(property = "maven.source.useDefaultManifestFile", defaultValue = "false")
     private boolean useDefaultManifestFile;
 
     /**
      * Specifies whether or not to attach the artifact to the project
      */
     @Parameter(property = "maven.source.attach", defaultValue = "true")
     private boolean attach;
 
     /**
      * Specifies whether or not to exclude resources from the sources-jar. This can be convenient if your project
      * includes large resources, such as images, and you don't want to include them in the sources-jar.
      *
      * @since 2.0.4
      */
     @Parameter(property = "maven.source.excludeResources", defaultValue = "false")
     protected boolean excludeResources;
 
     /**
      * Specifies whether or not to include the POM file in the sources-jar.
      *
      * @since 2.1
      */
     @Parameter(property = "maven.source.includePom", defaultValue = "false")
     protected boolean includePom;
 
     /**
      * Used for attaching the source jar to the project.
      */
     @Component
     private MavenProjectHelper projectHelper;
 
     /**
      * The directory where the generated archive file will be put.
      */
     @Parameter(defaultValue = "${project.build.directory}")
     protected File outputDirectory;
 
     /**
      * The filename to be used for the generated archive file. For the source:jar goal, "-sources" is appended to this
      * filename. For the source:test-jar goal, "-test-sources" is appended.
      */
     @Parameter(defaultValue = "${project.build.finalName}")
     protected String finalName;
 
     /**
      * Contains the full list of projects in the reactor.
      */
     @Parameter(defaultValue = "${reactorProjects}", readonly = true)
     protected List<MavenProject> reactorProjects;
 
     /**
      * Whether creating the archive should be forced. If set to true, the jar will always be created. If set to false,
      * the jar will only be created when the sources are newer than the jar.
      *
      * @since 2.1
      */
     @Parameter(property = "maven.source.forceCreation", defaultValue = "false")
     private boolean forceCreation;
 
     /**
      * A flag used to disable the source procedure. This is primarily intended for usage from the command line to
      * occasionally adjust the build.
      *
      * @since 2.2
      */
     @Parameter(property = "maven.source.skip", defaultValue = "false")
     private boolean skipSource;
 
     /**
      * The Maven session.
      */
     @Parameter(defaultValue = "${session}", readonly = true, required = true)
     private MavenSession session;
 
     /**
      * Timestamp for reproducible output archive entries, either formatted as ISO 8601
      * <code>yyyy-MM-dd'T'HH:mm:ssXXX</code> or as an int representing seconds since the epoch (like
      * <a href="https://reproducible-builds.org/docs/source-date-epoch/">SOURCE_DATE_EPOCH</a>).
      *
      * @since 3.2.0
      */
     @Parameter(defaultValue = "${project.build.outputTimestamp}")
     private String outputTimestamp;
 
     // ----------------------------------------------------------------------
     // Public methods
     // ----------------------------------------------------------------------
 
     /**
      * {@inheritDoc}
      */
     public void execute() throws MojoExecutionException {
         if (skipSource) {
             getLog().info("Skipping source per configuration.");
             return;
         }
 
         packageSources(project);
     }
 
     // ----------------------------------------------------------------------
     // Protected methods
     // ----------------------------------------------------------------------
 
     /**
      * @return the wanted classifier, ie <code>sources</code> or <code>test-sources</code>
      */
     protected abstract String getClassifier();
 
     /**
      * @param p {@link MavenProject} not null
      * @return the compile or test sources
      * @throws MojoExecutionException in case of an error.
      */
     protected abstract List<String> getSources(MavenProject p) throws MojoExecutionException;
 
     /**
      * @param p {@link MavenProject} not null
      * @return the compile or test resources
      * @throws MojoExecutionException in case of an error.
      */
     protected abstract List<Resource> getResources(MavenProject p) throws MojoExecutionException;
 
     /**
      * @param p {@link MavenProject}
      * @throws MojoExecutionException in case of an error.
      */
     protected void packageSources(MavenProject p) throws MojoExecutionException {
         if (!"pom".equals(p.getPackaging())) {
             packageSources(Collections.singletonList(p));
         }
     }
 
     /**
      * @param theProjects {@link MavenProject}
      * @throws MojoExecutionException in case of an error.
      */
     protected void packageSources(List<MavenProject> theProjects) throws MojoExecutionException {
         if (project.getArtifact().getClassifier() != null) {
             getLog().warn("NOT adding sources to artifacts with classifier as Maven only supports one classifier "
                     + "per artifact. Current artifact [" + project.getArtifact().getId() + "] has a ["
                     + project.getArtifact().getClassifier() + "] classifier.");
 
             return;
         }
 
         MavenArchiver archiver = createArchiver();
 
         for (MavenProject pItem : theProjects) {
             MavenProject subProject = getProject(pItem);
 
             if ("pom".equals(subProject.getPackaging())) {
                 continue;
             }
 
             archiveProjectContent(subProject, archiver.getArchiver());
         }
 
         if (archiver.getArchiver().getResources().hasNext() || forceCreation) {
 
             if (useDefaultManifestFile && defaultManifestFile.exists() && archive.getManifestFile() == null) {
                 getLog().info("Adding existing MANIFEST to archive. Found under: " + defaultManifestFile.getPath());
                 archive.setManifestFile(defaultManifestFile);
             }
 
             File outputFile = new File(outputDirectory, finalName + "-" + getClassifier() + getExtension());
 
             try {
                 archiver.setOutputFile(outputFile);
                 archive.setForced(forceCreation);
 
                 getLog().debug("create archive " + outputFile);
                 archiver.createArchive(session, project, archive);
             } catch (IOException | ArchiverException | DependencyResolutionRequiredException | ManifestException e) {
                 throw new MojoExecutionException("Error creating source archive: " + e.getMessage(), e);
             }
 
             if (attach) {
                 boolean requiresAttach = true;
                 for (Artifact attachedArtifact : project.getAttachedArtifacts()) {
                     Artifact previouslyAttachedArtifact =
                             getPreviouslyAttached(attachedArtifact, project, getClassifier());
                     if (previouslyAttachedArtifact != null) {
                         File previouslyAttachedFile = previouslyAttachedArtifact.getFile();
                         // trying to attache the same file/path or not?
                         if (!outputFile.equals(previouslyAttachedFile)) {
                             getLog().error("Artifact " + previouslyAttachedArtifact.getId()
                                     + " already attached to a file " + relative(previouslyAttachedFile) + ": attach to "
                                     + relative(outputFile) + " should be done with another classifier");
                             throw new MojoExecutionException("Presumably you have configured maven-source-plugin "
                                     + "to execute twice in your build to different output files. "
                                     + "You have to configure a classifier for at least one of them.");
                         }
                         requiresAttach = false;
                         getLog().info("Artifact " + previouslyAttachedArtifact.getId() + " already attached to "
                                 + relative(outputFile) + ": ignoring same re-attach (same artifact, same file)");
                     }
                 }
                 if (requiresAttach) {
                     projectHelper.attachArtifact(project, getType(), getClassifier(), outputFile);
                 }
             } else {
                 getLog().info("NOT adding java-sources to attached artifacts list.");
             }
         } else {
             getLog().info("No sources in project. Archive not created.");
         }
     }
 
     private String relative(File to) {
         Path basedir = project.getBasedir().getAbsoluteFile().toPath();
         return basedir.relativize(to.getAbsoluteFile().toPath()).toString();
     }
 
     private Artifact getPreviouslyAttached(Artifact artifact, MavenProject checkProject, String classifier) {
         return artifact.getType().equals(getType())
                         && artifact.getGroupId().equals(checkProject.getGroupId())
                         && artifact.getArtifactId().equals(checkProject.getArtifactId())
                         && artifact.getVersion().equals(checkProject.getVersion())
                         && Objects.equals(artifact.getClassifier(), classifier)
                 ? artifact
                 : null;
     }
 
     /**
      * @param p {@link MavenProject}
      * @param archiver {@link Archiver}
      * @throws MojoExecutionException in case of an error.
      */
     protected void archiveProjectContent(MavenProject p, Archiver archiver) throws MojoExecutionException {
         if (includePom) {
             try {
                 archiver.addFile(p.getFile(), p.getFile().getName());
             } catch (ArchiverException e) {
                 throw new MojoExecutionException("Error adding POM file to target jar file.", e);
             }
         }
 
         for (String s : getSources(p)) {
 
             File sourceDirectory = new File(s);
 
             if (sourceDirectory.exists()) {
                 addDirectory(archiver, sourceDirectory, getCombinedIncludes(null), getCombinedExcludes(null));
             }
         }
 
         // MAPI: this should be taken from the resources plugin
         for (Resource resource : getResources(p)) {
 
             File sourceDirectory = new File(resource.getDirectory());
 
             if (!sourceDirectory.exists()) {
                 continue;
             }
 
             List<String> resourceIncludes = resource.getIncludes();
 
             String[] combinedIncludes = getCombinedIncludes(resourceIncludes);
 
             List<String> resourceExcludes = resource.getExcludes();
 
             String[] combinedExcludes = getCombinedExcludes(resourceExcludes);
 
             String targetPath = resource.getTargetPath();
             if (targetPath != null) {
                 if (!targetPath.trim().endsWith("/")) {
                     targetPath += "/";
                 }
                 addDirectory(archiver, sourceDirectory, targetPath, combinedIncludes, combinedExcludes);
             } else {
                 addDirectory(archiver, sourceDirectory, combinedIncludes, combinedExcludes);
             }
         }
     }
 
     /**
      * @return {@link MavenArchiver}
      * @throws MojoExecutionException in case of an error.
      */
     protected MavenArchiver createArchiver() throws MojoExecutionException {
         MavenArchiver archiver = new MavenArchiver();
         archiver.setArchiver(jarArchiver);
         archiver.setCreatedBy("Maven Source Plugin", "org.apache.maven.plugins", "maven-source-plugin");
         archiver.setBuildJdkSpecDefaultEntry(false);
 
         // configure for Reproducible Builds based on outputTimestamp value
         archiver.configureReproducibleBuild(outputTimestamp);
 
         if (project.getBuild() != null) {
             List<Resource> resources = project.getBuild().getResources();
 
             for (Resource r : resources) {
                 if (r.getDirectory().endsWith("maven-shared-archive-resources")) {
                     addDirectory(
                             archiver.getArchiver(),
                             new File(r.getDirectory()),
                             getCombinedIncludes(null),
                             getCombinedExcludes(null));
                 }
             }
         }
 
         return archiver;
     }
 
     /**
      * @param archiver {@link Archiver}
      * @param sourceDirectory {@link File}
      * @param pIncludes The list of includes.
      * @param pExcludes The list of excludes.
      * @throws MojoExecutionException in case of an error.
      */
     protected void addDirectory(Archiver archiver, File sourceDirectory, String[] pIncludes, String[] pExcludes)
             throws MojoExecutionException {
         try {
             getLog().debug("add directory " + sourceDirectory + " to archiver");
             archiver.addFileSet(DefaultFileSet.fileSet(sourceDirectory).includeExclude(pIncludes, pExcludes));
         } catch (ArchiverException e) {
             throw new MojoExecutionException("Error adding directory to source archive.", e);
         }
     }
 
     /**
      * @param archiver {@link Archiver}
      * @param sourceDirectory {@link File}
      * @param prefix The prefix.
      * @param pIncludes the includes.
      * @param pExcludes the excludes.
      * @throws MojoExecutionException in case of an error.
      */
     protected void addDirectory(
             Archiver archiver, File sourceDirectory, String prefix, String[] pIncludes, String[] pExcludes)
             throws MojoExecutionException {
         try {
             getLog().debug("add directory " + sourceDirectory + " to archiver with prefix " + prefix);
             archiver.addFileSet(
                     DefaultFileSet.fileSet(sourceDirectory).prefixed(prefix).includeExclude(pIncludes, pExcludes));
         } catch (ArchiverException e) {
             throw new MojoExecutionException("Error adding directory to source archive.", e);
         }
     }
 
     /**
      * @return The extension {@code .jar}
      */
     protected String getExtension() {
         return ".jar";
     }
 
     /**
      * @param p {@link MavenProject}
      * @return The execution projet.
      */
     protected MavenProject getProject(MavenProject p) {
         if (p.getExecutionProject() != null) {
             return p.getExecutionProject();
         }
 
         return p;
     }
 
     /**
      * @return The type {@code java-source}
      */
     protected String getType() {
         return "java-source";
     }
 
     /**
      * Combines the includes parameter and additional includes. Defaults to {@link #DEFAULT_INCLUDES} If the
      * additionalIncludes parameter is null, it is not added to the combined includes.
      *
      * @param additionalIncludes The includes specified in the pom resources section
      * @return The combined array of includes.
      */
     private String[] getCombinedIncludes(List<String> additionalIncludes) {
         List<String> combinedIncludes = new ArrayList<>();
 
         if (includes != null && includes.length > 0) {
             combinedIncludes.addAll(Arrays.asList(includes));
         }
 
         if (additionalIncludes != null && !additionalIncludes.isEmpty()) {
             combinedIncludes.addAll(additionalIncludes);
         }
 
         // If there are no other includes, use the default.
         if (combinedIncludes.isEmpty()) {
             combinedIncludes.addAll(Arrays.asList(DEFAULT_INCLUDES));
         }
 
         return combinedIncludes.toArray(new String[0]);
     }
 
     /**
      * Combines the user parameter {@link #excludes}, the default excludes from plexus FileUtils, and the contents of
      * the parameter addionalExcludes.
      *
      * @param additionalExcludes Additional excludes to add to the array
      * @return The combined list of excludes.
      */
     private String[] getCombinedExcludes(List<String> additionalExcludes) {
         List<String> combinedExcludes = new ArrayList<>();
 
         if (useDefaultExcludes) {
             combinedExcludes.addAll(FileUtils.getDefaultExcludesAsList());
         }
 
         if (excludes != null && excludes.length > 0) {
             combinedExcludes.addAll(Arrays.asList(excludes));
         }
 
         if (additionalExcludes != null && !additionalExcludes.isEmpty()) {
             combinedExcludes.addAll(additionalExcludes);
         }
 
         if (combinedExcludes.isEmpty()) {
             combinedExcludes.addAll(Arrays.asList(DEFAULT_EXCLUDES));
         }
 
         return combinedExcludes.toArray(new String[0]);
     }
 
     /**
      * @return The current project.
      */
     protected MavenProject getProject() {
         return project;
     }
 
     /**
      * @param project {@link MavenProject}
      */
     protected void setProject(MavenProject project) {
         this.project = project;
     }
 }