#! /bin/bash

# shellcheck disable=SC2094
# ? This is done to ignore the message "Make sure not to read and write
# ? the same file in the same pipeline", which is a result of ${DATABASE}
# ? being used below. (This disables the message file-wide.)

# shellcheck source=../scripts/helpers/index.sh
source /usr/local/bin/helpers/index.sh

DATABASE=/tmp/docker-mailserver/dovecot-masters.cf

function __usage
{
  printf '%s' "${PURPLE}DELDOVECOTMASTERUSER${RED}(${YELLOW}8${RED})

${ORANGE}NAME${RESET}
    deldovecotmasteruser - delete a dovecot master user

${ORANGE}SYNOPSIS${RESET}
    ./setup.sh dovecot-master del [ OPTIONS ] { <MAIL ADDRESS> [<MAIL ADDRESS>${RED}...${RESET}] ${RED}|${RESET} help }

${ORANGE}DESCRIPTION${RESET}
    Delete a dovecot master user.

${ORANGE}OPTIONS${RESET}
    -h
        Show this help dialogue.

${ORANGE}EXAMPLES${RESET}
    ${LWHITE}./setup.sh dovecot-master del administrator${RESET}
        Delete the dovecot master user called 'administrator'.

    ${LWHITE}./setup.sh dovecot-master del administrator admin${RESET}
        Delete dovecot master users 'administrator' and 'admin'.

${ORANGE}EXIT STATUS${RESET}
    Exit status is 0 if command was successful, and 1 if there was an error.
"
}

if [[ ${1} == 'help' ]]
then
  __usage
  exit 0
fi

shift $((OPTIND-1))

[[ -z ${*} ]] && { __usage ; _exit_with_error 'No user specified' ; }
[[ -s ${DATABASE} ]] || exit 0

_create_lock # Protect config file with lock to avoid race conditions

for USER in "${@}"
do
  ERROR=false

  # ${USER} must not contain /s and other syntactic characters
  UNESCAPED_USER="${USER}"
  USER=$(_escape "${USER}")

  if [[ -f ${DATABASE} ]]
  then
    if ! sedfile --strict -i "/^${USER}|/d" "${DATABASE}"
    then
      _log 'error' "'${UNESCAPED_USER}' couldn't be deleted in '${DATABASE}'"
      ERROR=true
    fi
  fi

  ${ERROR} && _exit_with_error 'See the messages above.'
done

exit 0