#!/bin/sh
# Prepend an entry to the Debian changelog.
#   changelog.sh <version> "what changed"
set -eu

version=${1:-}
message=${2:-}
root=$(cd "$(dirname "$0")/.." && pwd)
file=$root/packaging/deb/changelog

if [ -z "$version" ] || [ -z "$message" ]; then
	echo 'usage: make changelog MSG="what changed"' >&2
	exit 2
fi

author=${DEBFULLNAME:-tiredsysadmin}
email=${DEBEMAIL:-rcmd@garage.rcmd.space}
tmp=$(mktemp)
{
	printf 'keeporg (%s) unstable; urgency=medium\n\n' "$version"
	printf '%s\n' "$message" | fold -s -w 72 | sed -e '1s/^/  * /' -e '2,$s/^/    /'
	printf '\n'
	printf ' -- %s <%s>  %s\n\n' "$author" "$email" "$(date -R)"
	cat "$file"
} > "$tmp"
mv "$tmp" "$file"
printf 'added %s to %s\n' "$version" "$file"