#! /bin/bash

DATABASE=${DATABASE:-/tmp/docker-mailserver/postfix-relaymap.cf}

DOMAIN="$1"
HOST="$2"
PORT="$3"

usage() {
	echo "Usage: addrelayhost <domain> <host> [<port>]"
}

errex() {
	echo "$@" 1>&2
	exit 1
}

escape() {
	echo "${1//./\\.}"
}

[ -z "$DOMAIN" ] && { usage; errex "no domain specified"; }
[ -z "$HOST" ] && { usage; errex "no relay host specified"; }

if [ -z "$PORT" ]; then
	PORT=25
fi

if grep -qi "^@$DOMAIN" $DATABASE 2>/dev/null; then
	sed -i "s ^@"$DOMAIN".* "@$DOMAIN"\t\t["$HOST"]:"$PORT" " $DATABASE
else
	echo -e "@$DOMAIN\t\t[$HOST]:$PORT" >> $DATABASE
fi