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package org.graphwalker.maven.plugin;

/*
 * #%L
 * GraphWalker Maven Plugin
 * %%
 * Copyright (C) 2005 - 2014 GraphWalker
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * #L%
 */

import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugins.annotations.Component;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.util.FileUtils;
import org.codehaus.plexus.util.StringUtils;

import java.io.File;
import java.util.HashSet;
import java.util.Set;

/**
 * @author Nils Olsson
 */
public abstract class DefaultMojoBase extends AbstractMojo {

  @Component
  private MavenSession session;

  @Component
  private MavenProject mavenProject;

  protected MavenSession getSession() {
    return session;
  }

  protected MavenProject getMavenProject() {
    return mavenProject;
  }

  private String toString(Set set) {
    if (null == set) {
      return "";
    }
    return StringUtils.join(set.toArray(new String[set.size()]), ",");
  }

  protected Set findFiles(Set includes, Set excludes, File... directories) {
    return findFiles(toString(includes), toString(excludes), directories);
  }

  protected Set findFiles(String includes, String excludes, File... directories) {
    Set files = new HashSet<>();
    for (File directory : directories) {
      if (directory.exists()) {
        try {
          for (Object filename : FileUtils.getFileNames(directory, includes, excludes, true, true)) {
            files.add(new File((String) filename));
          }
        } catch (Throwable t) {
          getLog().debug(t);
        }
      }
    }
    return files;
  }
}