/*
 * Copyright 2003-2020 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "DatabaseSong.hxx"
#include "Interface.hxx"
#include "song/DetachedSong.hxx"
#include "song/LightSong.hxx"
#include "storage/StorageInterface.hxx"
#include "util/ScopeExit.hxx"
#include "util/UriExtract.hxx"
#include "util/UriRelative.hxx"

#include <cassert>

DetachedSong
DatabaseDetachSong(const Storage *storage, const LightSong &song) noexcept
{
	DetachedSong detached(song);
	assert(detached.IsInDatabase());

	if (storage != nullptr) {
		if (!detached.HasRealURI()) {
			const auto uri = song.GetURI();
			detached.SetRealURI(storage->MapUTF8(uri.c_str()));
		} else if (uri_is_relative_path(detached.GetRealURI())) {
			/* if the "RealURI" is relative, translate it
			   using the song's "URI" attribute, because
			   it's assumed to be relative to it */
			const auto real_uri =
				uri_apply_relative(detached.GetRealURI(),
						   song.GetURI());
			detached.SetRealURI(storage->MapUTF8(real_uri.c_str()));
		}
	}

	return detached;
}

DetachedSong
DatabaseDetachSong(const Database &db, const Storage *storage, const char *uri)
{
	const LightSong *tmp = db.GetSong(uri);
	assert(tmp != nullptr);

	AtScopeExit(&db, tmp) { db.ReturnSong(tmp); };

	return DatabaseDetachSong(storage, *tmp);
}