#!/bin/bash
set -e

file="${LFS_VER}-ch7-backup.tar.xz"
directories=(bin dev etc lib lib64 proc run sbin sys tools usr var)

if [ -f "${LFS}/sources/chapter7/backup" ]; then
	printf "%b" "  ${IGRN}Backup previously completed${RST}\n"
else

	printf "%b" "${GRN}Backing up ${YLW}${LFS}${GRN} to ${YLW}${file}${RST}... "
	pushd "${LFS}" > /dev/null || exit 1
		# shellcheck disable=SC2024
		sudo XZ_OPTS="-T${NUMPROCS} -e" tar cJvpf "${HOME}"/"${file}" "${directories[@]}" >"${LFS}"/sources/log/chapter7/backup.log 2>&1 & pid=$!
		spinner "$pid" "${SPINNER}"
		retval=$?
		if [ "${retval}" -ne 0 ]; then
			fail "FAILED!"
			exit "${retval}"
		else
			# shellcheck disable=SC2024
			sudo chown -v "${USER}":"$(id -g)" "${HOME}"/"${file}" >"${LFS}"/sources/log/chapter7/backup.log 2>&1
			success "OK"
		fi
	popd > /dev/null || exit 1

	touch "${LFS}/sources/chapter7/backup"
fi