entrypoint

#!/bin/bash

delete_group_id() {
  GROUP_ID="${1}"
  GROUP_TO_DELETE="$(getent group "${GROUP_ID}" | cut -d: -f1)"
  delgroup "${GROUP_TO_DELETE}"
}

delete_user_id() {
  USER_ID="${1}"
  USER_TO_DELETE="$(getent passwd "${USER_ID}" | cut -d: -f1)"
  deluser "${USER_TO_DELETE}"
}

group_id_exists() {
  GROUP_ID="${1}"
  getent group "${GROUP_ID}" > /dev/null 2>&1
}


user_id_exists() {
  USER_ID="${1}"
  getent user "${USER_ID}" > /dev/null 2>&1
}

user_name_exists() {
  USER_NAME="${1}"
  getent passwd | cut -d: -f1 | grep -q "${USER_NAME}"
}

# borg ssh will error out if the userid/groupid used do not actually exist
USER_ID=${USER_ID:-}
GROUP_ID=${GROUP_ID:-}
if [ ! -z "$USER_ID" -a ! -z "$GROUP_ID" ] ; then
  echo "Switching to userx"
  export USER="userx"

  if user_id_exists ${USER_ID} ; then
    delete_user_id ${USER_ID}
  fi

  if group_id_exists ${USER_ID} ; then
    delete_group_id ${GROUP_ID}
  fi

  if user_name_exists ${USER} ; then
    deluser ${USER}
  fi

  groupadd -g "${GROUP_ID}" "${USER}"
  useradd -u "${USER_ID}" -g "${USER}" "${USER}"
fi

if [ ! -z "${USER}" ] ; then
  gosu ${USER} cloudbackup "$@"
  exit $?
fi

cloudbackup "$@"