docker-mailserver/target/bin/delalias

#! /bin/bash

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

EMAIL="$1"
RECIPIENT="$2"

usage() {
	echo "Usage: delalias <alias@domain> <recipient@other>"
}

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

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

[ -z "$EMAIL" ] || [ -z "$RECIPIENT" ]  && { usage; errex "No email specifed"; }
[ -s "$DATABASE" ] || exit 0

CNT=$(grep "^$EMAIL" $DATABASE | wc -w | awk '{print $1}')

if [[ $CNT -eq 2 ]]; then
        sed -i "/^$EMAIL/d" $DATABASE
    else
        sed -i "/^$EMAIL/s/,$RECIPIENT//g" $DATABASE
fi