#!/bin/bash

set -e 

do_pre_regen() {
  pending_dir=$1

  cd /usr/share/yunohost/templates/metronome

  # create directories for pending conf
  metronome_dir="${pending_dir}/etc/metronome"
  metronome_conf_dir="${metronome_dir}/conf.d"
  mkdir -p "$metronome_dir" "$metronome_conf_dir"

  # retrieve variables
  main_domain=$(cat /etc/yunohost/current_host)
  domain_list=$(sudo yunohost domain list --output-as plain --quiet)

  # install main conf file
  cat metronome.cfg.lua \
    | sed "s/{{ main_domain }}/${main_domain}/g" \
    > "${metronome_dir}/metronome.cfg.lua"

  # add domain conf files
  for domain in $domain_list; do
    cat domain.cfg.lua.sed \
      | sed "s/{{ domain }}/${domain}/g" \
      > "${metronome_conf_dir}/${domain}.cfg.lua"
  done

  # remove old domain conf files
  conf_files=$(ls -1 /etc/metronome/conf.d \
                 | awk '/^[a-z].*\.cfg\.lua$/ { print $1 }')
  for file in $conf_files; do
    domain=${file%.cfg.lua}
    [[ $domain_list =~ $domain ]] \
      || touch "${metronome_conf_dir}/${file}"
  done
}

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

  # create metronome directories for domains
  for domain in $domain_list; do
    sudo mkdir -p "/var/lib/metronome/${domain//./%2e}/pep"
  done

  # fix permissions
  sudo chown -R metronome: /var/lib/metronome/
  sudo chown -R metronome: /etc/metronome/conf.d/

  # TODO: only restart if conf changed
  sudo service metronome restart
}

FORCE=$2

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

exit 0