docker-mailserver/target/bin/delalias

#! /bin/bash

# shellcheck source=../scripts/helper-functions.sh
. /usr/local/bin/helper-functions.sh

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

EMAIL="${1}"
RECIPIENT="${2}"

function __usage { echo "Usage: delalias <alias@domain> <recipient@other>" ; }

[[ ${1:-} == 'help' ]] && { __usage ; exit 0 ; }

[[ -z ${EMAIL} ]] && { __usage ; errex "Error: No alias specified" ; }
[[ -z ${RECIPIENT} ]] && { __usage ; errex "Error: No recipient specified" ; }
[[ -s ${DATABASE} ]] || exit 0

sed -i \
  -e "/^${EMAIL} *${RECIPIENT}$/d" \
  -e "/^${EMAIL}/s/,${RECIPIENT}//g" \
  -e "/^${EMAIL}/s/${RECIPIENT},//g" \
  "${DATABASE}"