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

prefix=
if [ "$(id -u)" -eq 0 ] && [ "{{ MODE }}" != "root" ] && [ "{{ MODE }}" != "auto" ]; then
	if ! id "${SUDO_USER:-user}" >/dev/null 2>&1; then
		if [ ! -e /mmdebstrap-testenv ]; then
			echo "this test modifies the system and should only be run inside a container" >&2
			exit 1
		fi
		useradd --home-dir "/home/${SUDO_USER:-user}" --create-home "${SUDO_USER:-user}"
	fi
	prefix="runuser -u ${SUDO_USER:-user} --"
fi

case "$(dpkg --print-architecture)" in
	arm64)
		native_arch=arm64
		native_gnu=aarch64-linux-gnu
		foreign_arch=amd64
		foreign_gnu=x86_64-linux-gnu
		;;
	amd64)
		native_arch=amd64
		native_gnu=x86_64-linux-gnu
		foreign_arch=arm64
		foreign_gnu=aarch64-linux-gnu
		;;
	*)
		echo "unsupported native architecture" >&2
		exit 1
		;;
esac

[ "{{ MODE }}" = "fakechroot" ] && prefix="$prefix fakechroot fakeroot"
$prefix {{ CMD }} --mode={{ MODE }} --variant=apt --architectures="$foreign_arch" \
	{{ DIST }} /tmp/debian-chroot.tar {{ MIRROR }}
# we ignore differences between architectures by ignoring some files
# and renaming others
{ tar -tf /tmp/debian-chroot.tar \
	| grep -v '^\./usr/bin/i386$' \
	| grep -v '^\./usr/bin/x86_64$' \
	| grep -v '^\./lib64$' \
	| grep -v '^\./usr/lib64/$' \
	| grep -v '^\./usr/lib64/ld-linux-x86-64\.so\.2$' \
	| grep -v '^\./usr/lib/ld-linux-aarch64\.so\.1$' \
	| grep -v "^\\./usr/lib/$foreign_gnu/ld-linux-aarch64\\.so\\.1$" \
	| grep -v "^\\./usr/lib/$foreign_gnu/ld-linux-x86-64\\.so\\.2$" \
	| grep -v "^\\./usr/lib/$foreign_gnu/perl/5\\.[0-9][.0-9]\\+/.*\\.ph$" \
	| grep -v "^\\./usr/lib/$foreign_gnu/libmvec\\.so\\.1$" \
	| grep -v "^\\./usr/share/doc/[^/]\\+/changelog\\(\\.Debian\\)\\?\\.$foreign_arch\\.gz$" \
	| grep -v '^\./usr/share/man/man8/i386\.8\.gz$' \
	| grep -v '^\./usr/share/man/man8/x86_64\.8\.gz$' \
	| sed "s/$foreign_gnu/$native_gnu/" \
	| sed "s/$foreign_arch/$native_arch/";
} | sort > /tmp/tar2.txt
{ < tar1.txt \
	grep -v '^\./usr/bin/i386$' \
	| grep -v '^\./usr/bin/x86_64$' \
	| grep -v '^\./lib32$' \
	| grep -v '^\./lib64$' \
	| grep -v '^\./libx32$' \
	| grep -v '^\./usr/lib32/$' \
	| grep -v '^\./usr/libx32/$' \
	| grep -v '^\./usr/lib64/$' \
	| grep -v '^\./usr/lib64/ld-linux-x86-64\.so\.2$' \
	| grep -v '^\./usr/lib/ld-linux-aarch64\.so\.1$' \
	| grep -v "^\\./usr/lib/$native_gnu/ld-linux-x86-64\\.so\\.2$" \
	| grep -v "^\\./usr/lib/$native_gnu/ld-linux-aarch64\\.so\\.1$" \
	| grep -v "^\\./usr/lib/$native_gnu/libmvec\\.so\\.1$" \
	| grep -v "^\\./usr/lib/$native_gnu/perl/5\\.[0-9][.0-9]\\+/.*\\.ph$" \
	| grep -v "^\\./usr/share/doc/[^/]\\+/changelog\\(\\.Debian\\)\\?\\.$native_arch\\.gz$" \
	| grep -v '^\./usr/share/man/man8/i386\.8\.gz$' \
	| grep -v '^\./usr/share/man/man8/x86_64\.8\.gz$';
} | sort | diff -u - /tmp/tar2.txt >&2
rm /tmp/debian-chroot.tar /tmp/tar2.txt