/*
    * Copyright (C) 2013, Matthias Sohn <matthias.sohn@sap.com>
    * and other copyright owners as documented in the project's IP log.
    *
    * This program and the accompanying materials are made available
    * under the terms of the Eclipse Distribution License v1.0 which
    * accompanies this distribution, is reproduced below, and is
    * available at http://www.eclipse.org/org/documents/edl-v10.php
    *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or
   * without modification, are permitted provided that the following
   * conditions are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   *
   * - Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * - Neither the name of the Eclipse Foundation, Inc. nor the
   *   names of its contributors may be used to endorse or promote
   *   products derived from this software without specific prior
   *   written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.eclipse.jgit.pgm;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.eclipse.jgit.api.DescribeCommand;
  import org.eclipse.jgit.api.Git;
  import org.eclipse.jgit.api.errors.GitAPIException;
  import org.eclipse.jgit.api.errors.RefNotFoundException;
  import org.eclipse.jgit.errors.InvalidPatternException;
  import org.eclipse.jgit.lib.ObjectId;
  import org.eclipse.jgit.pgm.internal.CLIText;
  import org.kohsuke.args4j.Argument;
  import org.kohsuke.args4j.Option;
  
  @Command(common = true, usage = "usage_Describe")
  class Describe extends TextBuiltin {
  
  	@Argument(index = 0, metaVar = "metaVar_treeish")
  	private ObjectId tree;
  
  	@Option(name = "--long", usage = "usage_LongFormat")
  	private boolean longDesc;
  
  	@Option(name = "--tags", usage = "usage_UseTags")
  	private boolean useTags;
  
  	@Option(name = "--always", usage = "usage_AlwaysFallback")
  	private boolean always;
  
  	@Option(name = "--match", usage = "usage_Match", metaVar = "metaVar_pattern")
  	private List<String> patterns = new ArrayList<>();
  
  	/** {@inheritDoc} */
  	@Override
  	protected void run() {
  		try (Gitit.html#Git">Git git = new Git(db)) {
  			DescribeCommand cmd = git.describe();
  			if (tree != null) {
  				cmd.setTarget(tree);
  			}
  			cmd.setLong(longDesc);
  			cmd.setTags(useTags);
  			cmd.setAlways(always);
  			cmd.setMatch(patterns.toArray(new String[0]));
  			String result = null;
  			try {
  				result = cmd.call();
  			} catch (RefNotFoundException e) {
  				throw die(CLIText.get().noNamesFound, e);
  			}
  			if (result == null) {
  				throw die(CLIText.get().noNamesFound);
  			}
  
  			outw.println(result);
 		} catch (IOException | InvalidPatternException | GitAPIException e) {
 			throw die(e.getMessage(), e);
 		}
 	}
 }