/* *****************************************************************************
 * usage/storage/delete.c -- delete a file/directory on the calculator.
 * Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
 *
 * This file is part of libp7.
 * libp7 is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 3.0 of the License,
 * or (at your option) any later version.
 *
 * libp7 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with libp7; if not, see <http://www.gnu.org/licenses/>.
 * ************************************************************************** */
#include <libp7/internals.h>

/**
 *	p7_delete:
 *	Deletes a distant file.
 *
 *	@arg	handle		the libp7 handle
 *	@arg	dirname		the directory name
 *	@arg	filename	the file name
 *	@arg	devname		the device name
 *	@return				if it worked
 */

int p7_delete(p7_handle_t *handle,
	const char *dirname, const char *filename, const char *devname)
{
	int err;

	/* if no filename, put the directory name in the filename. */
	if (!filename) { filename = dirname; dirname = NULL; }

	/* make checks */
	chk_handle(handle);
	chk_active(handle);
	chk_filename(filename);
	chk_dirname(dirname);

	/* send command packet */
	log_info("sending command");
	if ((err = p7_send_cmdfls_delfile(handle,
	  dirname, filename, devname))) {
		log_fatal("couldn't send command/get its response");
		return (err);
	} else if (response.type != p7_pt_ack && response.type != p7_pt_error) {
		log_fatal("received an invalid answer");
		return (p7_error_unknown);
	}

	/* - check error - */
	if (response.type == p7_pt_error) switch (response.code) {
		case p7_err_other:
			log_fatal("file not found");
			return (p7_error_notfound);
		default:
			log_fatal("unknown error");
			return (p7_error_unknown);
	}

	/* we're done */
	return (0);
}