#!/bin/sh
set -eu
export LC_ALL=C.UTF-8
export SOURCE_DATE_EPOCH={{ SOURCE_DATE_EPOCH }}

[ "$(id -u)" -eq 0 ]
[ {{ MODE }} = "root" ]
case {{ FORMAT }} in tar|squashfs|ext2) : ;; *) exit 1;; esac

{{ CMD }} --mode={{ MODE }} --variant={{ VARIANT }} {{ DIST }} ./cache/mmdebstrap-{{ DIST }}-{{ VARIANT }}.{{ FORMAT }} {{ MIRROR }}
if [ "{{ FORMAT }}" = tar ]; then
	printf 'ustar ' | cmp --bytes=6 --ignore-initial=257:0 ./cache/mmdebstrap-{{ DIST }}-{{ VARIANT }}.tar -
elif [ "{{ FORMAT }}" = squashfs ]; then
	printf 'hsqs' | cmp --bytes=4 ./cache/mmdebstrap-{{ DIST }}-{{ VARIANT }}.squashfs -
elif [ "{{ FORMAT }}" = ext2 ]; then
	printf '\123\357' | cmp --bytes=2 --ignore-initial=1080:0 ./cache/mmdebstrap-{{ DIST }}-{{ VARIANT }}.ext2 -
else
	echo "unknown format: {{ FORMAT }}" >&2
	exit 1
fi