/*
    * #%L
    * Native ARchive plugin for Maven
    * %%
    * Copyright (C) 2002 - 2014 NAR Maven Plugin developers.
    * %%
    * Licensed 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.
   * #L%
   */
  package com.github.maven_nar;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.List;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.ResolutionScope;
  import org.apache.maven.shared.artifact.filter.collection.ScopeFilter;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * Assemble libraries of NAR files.
   *
   * @author Mark Donszelmann
   */
  @Mojo(name = "nar-assembly", defaultPhase = LifecyclePhase.PROCESS_RESOURCES, requiresProject = true,
    requiresDependencyResolution = ResolutionScope.TEST)
  public class NarAssemblyMojo extends AbstractDependencyMojo {
    /**
     * List the dependencies we want to assemble
     */
    @Override
    protected ScopeFilter getArtifactScopeFilter() {
      // Was Artifact.SCOPE_RUNTIME  + provided?
      // Think Provided isn't appropriate in Assembly - otherwise it isn't provided.
      return new ScopeFilter( Artifact.SCOPE_RUNTIME, null );
    }
  
    /**
     * Copies the unpacked nar libraries and files into the projects target area
     */
    @Override
    public final void narExecute() throws MojoExecutionException, MojoFailureException {
      // download the dependencies if needed in local maven repository.
      List<AttachedNarArtifact> attachedNarArtifacts = getAttachedNarArtifacts(libraries);
      downloadAttachedNars(attachedNarArtifacts);
  
      // Warning, for SNAPSHOT artifacts that were not in the local maven
      // repository, the downloadAttachedNars
      // method above modified the version in the AttachedNarArtifact object to
      // set the timestamp version from
      // the web repository.
      // In order to unpack the files with the correct names we need to get back
      // the AttachedNarArtifact objects with
      // -SNAPSHOT versions, so we call again getAttachedNarArtifacts() to get the
      // unmodified AttachedNarArtifact
      // objects
      attachedNarArtifacts = getAttachedNarArtifacts(libraries);
      unpackAttachedNars(attachedNarArtifacts);
  
      // this may make some extra copies...
      for (final Object element : attachedNarArtifacts) {
        final Artifact dependency = (Artifact) element;
        getLog().debug("Assemble from " + dependency);
  
        // FIXME reported to maven developer list, isSnapshot
        // changes behaviour
        // of getBaseVersion, called in pathOf.
        dependency.isSnapshot();
  
        final File srcDir = getLayout().getNarUnpackDirectory(getUnpackDirectory(),
            getNarManager().getNarFile(dependency));
        // File srcDir = new File( getLocalRepository().pathOf( dependency ) );
        // srcDir = new File( getLocalRepository().getBasedir(),
        // srcDir.getParent() );
        // srcDir = new File( srcDir, "nar/" );
  
        final File dstDir = getTargetDirectory();
        try {
          FileUtils.mkdir(dstDir.getPath());
          getLog().debug("SrcDir: " + srcDir);
          if (srcDir.exists()) {
            FileUtils.copyDirectoryStructureIfModified(srcDir, dstDir);
          }
        } catch (final IOException ioe) {
         throw new MojoExecutionException("Failed to copy directory for dependency " + dependency + " from " + srcDir
             + " to " + dstDir, ioe);
       }
     }
   }
 }