/*
 * Copyright (C) 2008, Charles O'Farrell <charleso@charleso.org>
 * Copyright (C) 2009, Google Inc.
 * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg.lists@dewire.com>
 * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
 * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
 * 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 org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectLoader;
import org.eclipse.jgit.lib.PersonIdent;

@Command(common = true, usage = "Create a tag")
class Tag extends TextBuiltin {
	@Option(name = "-f", usage = "force replacing an existing tag")
	private boolean force;

	@Option(name = "-m", metaVar = "message", usage = "tag message")
	private String message = "";

	@Argument(index = 0, required = true, metaVar = "name")
	private String tagName;

	@Argument(index = 1, metaVar = "object")
	private ObjectId object;

	@Override
	protected void run() throws Exception {
		if (object == null) {
			object = db.resolve(Constants.HEAD);
			if (object == null)
				throw die("Cannot resolve " + Constants.HEAD);
		}

		if (!tagName.startsWith(Constants.R_TAGS))
			tagName = Constants.R_TAGS + tagName;
		if (!force && db.resolve(tagName) != null) {
			throw die("fatal: tag '"
					+ tagName.substring(Constants.R_TAGS.length())
					+ "' exists");
		}

		final ObjectLoader ldr = db.openObject(object);
		if (ldr == null)
			throw new MissingObjectException(object, "any");

		org.eclipse.jgit.lib.Tag tag = new org.eclipse.jgit.lib.Tag(db);
		tag.setObjId(object);
		tag.setType(Constants.typeString(ldr.getType()));
		tag.setTagger(new PersonIdent(db));
		tag.setMessage(message.replaceAll("\r", ""));
		tag.setTag(tagName.substring(Constants.R_TAGS.length()));
		tag.tag();
	}
}