#!/bin/sh
set -eu

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

assert_arg() {
	if [ -z "$1" ]; then
		echo "Missing $2" >&2
		exit 2
	fi
}

assert_arg "${DATE:-}"         '-d DATE'
assert_arg "${VVERSION:-}"     '-V VERSION'
assert_arg "${PROJECT:-}"      '-n PROJECT'
assert_arg "${MAILING_LIST:-}" '-m MAILING_LIST'

if [ -z "${PROJECT_UC:-}" ]; then
	PROJECT_UC="$PROJECT"
fi

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

sh aux/workflow/assert-changelog.sh -N "$PROJECT_UC" -n "$PROJECT" "$VVERSION"
sh aux/workflow/assert-readme.sh -n "$PROJECT" -m "$MAILING_LIST" "$VVERSION"

if [ "$DATE" != "$(git log -1 --format=%cd --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

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 "$PROJECT"


cat <<EOF >&2
Now push the tag and the signature before pushing the commit:

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

EOF