#!/bin/sh
set -eu

usage() {
	cat <<-'EOF'
	EOF
}

while getopts 'd:V:n:' flag; do
	case "$flag" in
		d)
			DATE="$OPTARG"
			;;
		V)
			VVERSION="v$OPTARG"
			;;
		n)
			NAME="$OPTARG"
			;;
		*)
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))

. aux/lib.sh

eval "$(assert_arg "${DATE:-}"     '-d DATE')"
eval "$(assert_arg "${VVERSION:-}" '-V VERSION')"
eval "$(assert_arg "${NAME:-}"     '-n NAME')"


if [ "$(git rev-parse --abbrev-ref HEAD)" != 'main' ]; then
	echo 'Not on branch "main".' >&2
	exit 1
fi

if git show "$VVERSION" 1>/dev/null 2>/dev/null; then
	echo "Version '$VVERSION' already exists." >&2
	exit 1
fi

if ! printf '%s\n%s\n' "$(git tag)" "$VVERSION" | sort -nct. -k1 -k2 -k3; then
	echo 'New tag is not bigger than existing ones.' >&2
	exit 1
fi

if [ "$DATE" != "$(git log -1 --format=%ad --date=short HEAD)" ]; then
	echo "Date '$DATE' is not up-to-date." >&2
	exit 1
fi

if [ "Release $VVERSION" != "$(git log --format=%B -1 HEAD | head -n1)" ]; then
	echo "Commit message isn't 'Release $VVERSION'." >&2
	exit 1
fi

# FIXME
: make clean check EXTRA_VERSION="$VVERSION"

if ! (git diff --quiet && git diff --quiet --staged); then
	echo 'Dirty repository.'
	exit 1
fi


git tag "$VVERSION"
sh aux/workflow/sign-tarballs.sh -n "$NAME"


printf 'Publish version? [Y/n]: ' >&2
read -r publish

if [ "$publish" = 'n' ]; then
	cat <<EOF >&2
Now push the tag and the signature before pushing the commit:

git push origin refs/notes/signatures/tar.gz -o ci.skip --no-verify
git push --tags -o ci.skip --no-verify
git push

EOF
else
	git push origin refs/notes/signatures/tar.gz -o ci.skip --no-verify
	git push --tags -o ci.skip --no-verify
	git push
fi