/*
    * Copyright (C) 2010, 2012 Christian Halstrick <christian.halstrick@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.util.ArrayList;
  import java.util.List;
  
  import org.eclipse.jgit.api.CommitCommand;
  import org.eclipse.jgit.api.Git;
  import org.eclipse.jgit.api.errors.ConcurrentRefUpdateException;
  import org.eclipse.jgit.api.errors.JGitInternalException;
  import org.eclipse.jgit.api.errors.NoHeadException;
  import org.eclipse.jgit.api.errors.NoMessageException;
  import org.eclipse.jgit.lib.Constants;
  import org.eclipse.jgit.lib.Ref;
  import org.eclipse.jgit.pgm.internal.CLIText;
  import org.eclipse.jgit.revwalk.RevCommit;
  import org.eclipse.jgit.util.RawParseUtils;
  import org.kohsuke.args4j.Argument;
  import org.kohsuke.args4j.Option;
  
  @Command(common = true, usage = "usage_recordChangesToRepository")
  class Commit extends TextBuiltin {
  	// I don't support setting the committer, because also the native git
  	// command doesn't allow this.
  
  	@Option(name = "--author", metaVar = "metaVar_author", usage = "usage_CommitAuthor")
  	private String author;
  
  	@Option(name = "--message", aliases = { "-m" }, metaVar = "metaVar_message", usage = "usage_CommitMessage", required = true)
  	private String message;
  
  	@Option(name = "--only", aliases = { "-o" }, usage = "usage_CommitOnly")
  	private boolean only;
  
  	@Option(name = "--all", aliases = { "-a" }, usage = "usage_CommitAll")
  	private boolean all;
  
  	@Option(name = "--amend", usage = "usage_CommitAmend")
  	private boolean amend;
  
  	@Argument(metaVar = "metaVar_commitPaths", usage = "usage_CommitPaths")
  	private List<String> paths = new ArrayList<>();
  
  	/** {@inheritDoc} */
  	@Override
  	protected void run() throws NoHeadException, NoMessageException,
  			ConcurrentRefUpdateException, JGitInternalException, Exception {
  		try (Git git = new Git(db)) {
  			CommitCommand commitCmd = git.commit();
  			if (author != null)
  				commitCmd.setAuthor(RawParseUtils.parsePersonIdent(author));
  			if (message != null)
  				commitCmd.setMessage(message);
  			if (only && paths.isEmpty())
  				throw die(CLIText.get().pathsRequired);
  			if (only && all)
  				throw die(CLIText.get().onlyOneOfIncludeOnlyAllInteractiveCanBeUsed);
  			if (!paths.isEmpty())
  				for (String p : paths)
  					commitCmd.setOnly(p);
  			commitCmd.setAmend(amend);
  			commitCmd.setAll(all);
  			Ref head = db.exactRef(Constants.HEAD);
 			if (head == null) {
 				throw die(CLIText.get().onBranchToBeBorn);
 			}
 			RevCommit commit;
 			try {
 				commit = commitCmd.call();
 			} catch (JGitInternalException e) {
 				throw die(e.getMessage());
 			}
 
 			String branchName;
 			if (!head.isSymbolic())
 				branchName = CLIText.get().branchDetachedHEAD;
 			else {
 				branchName = head.getTarget().getName();
 				if (branchName.startsWith(Constants.R_HEADS))
 					branchName = branchName.substring(Constants.R_HEADS.length());
 			}
 			outw.println("[" + branchName + " " + commit.name() + "] " //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 					+ commit.getShortMessage());
 		}
 	}
 }