#!/bin/bash

set -e

do_pre_regen() {
  pending_dir=$1

  cd /usr/share/yunohost/templates/rmilter

  install -D rmilter.conf "${pending_dir}/etc/rmilter.conf"
  install -D rmilter.socket "${pending_dir}/etc/rmilter.socket"
}

do_post_regen() {
  # retrieve variables
  # TODO: retrieve only new domains
  domain_list=$(sudo yunohost domain list --output-as plain --quiet)

  # create DKIM key for domains
  for domain in $domain_list; do
    [ ! -f /etc/dkim/$domain.mail.key ] && {
      sudo opendkim-genkey --domain="$domain" \
          --selector=mail --directory=/etc/dkim
      sudo mv /etc/dkim/mail.private "/etc/dkim/${domain}.mail.key"
      sudo mv /etc/dkim/mail.txt "/etc/dkim/${domain}.mail.txt"
    }
  done

  # fix DKIM keys permissions
  sudo chown _rmilter /etc/dkim/*.mail.key
  sudo chmod 400 /etc/dkim/*.mail.key

  # Reload systemd daemon, ensure that the socket is listening and stop
  # the service. It will be started again by the socket as needed.
  # TODO: only restart if conf changed
  sudo systemctl -q daemon-reload
  sudo systemctl -q start rmilter.socket
  sudo systemctl -q stop rmilter.service 2>&1 || true
}

FORCE=$2

case "$1" in
  pre)
    do_pre_regen $3
    ;;
  post)
    do_post_regen
    ;;
  *)
    echo "hook called with unknown argument \`$1'" >&2
    exit 1
    ;;
esac

exit 0