# Downloading and temporary file management
#
# Copyright (C) 2015  Patrick "P. J." McDermott
#
# 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 3 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, see <http://www.gnu.org/licenses/>.

temp_dir=''

init_temp_dir()
{
	local tmpdir=''

	if [ "x${TMPDIR:+set}" = 'xset' ]; then
		tmpdir="${TMPDIR}"
	else
		tmpdir='/tmp'
	fi

	rand
	temp_dir="${tmpdir}/firman-$(printf '%010d' ${rand_x})"
	if ! mkdir "${temp_dir}"; then
		dbg 'Failed to create temporary directory'
		return 1
	fi

	return 0
}

fini_temp_dir()
{
	if ! rmdir "${temp_dir}"; then
		dbg 'Failed to remove temporary directory'
		return 1
	fi

	return 0
}

get_temp_dir()
{
	printf '%s' "${temp_dir}"
	return 0
}

dl()
{
	local url="${1}"
	shift 1

	if ! ${WGET} -q -O - "${url}"; then
		dbg 'Failed to download "%s"' "${url}"
		return 1
	fi

	return 0
}

dl_temp()
{
	local url="${1}"
	local file="${2}"
	shift 2

	if ! ${WGET} -q -O "${temp_dir}/${file}" "${url}"; then
		dbg 'Failed to download "%s"' "${url}"
		return 1
	fi

	printf '%s/%s' "${temp_dir}" "${file}"
	return 0
}

rm_temp()
{
	local file="${1}"
	shift 1

	rm -Rf "${temp_dir}/${file}"

	return 0
}