#!/bin/bash
set -u

invocation_id=$(systemctl show -p InvocationID --value {{ app }}.service)
hostname=$(hostname)
subject="YunoHost Restic backup log on ${hostname}"
backup_results=$(sudo /bin/journalctl _SYSTEMD_INVOCATION_ID=${invocation_id} | grep -oP '(?<=    )[a-zA-Z_-]+: \w+')
echo ${backup_results} | grep -iqE 'error|fail'
if [ "$?" -eq 0 ];then
  subject="${subject} (FAIL)"
else
  subject="${subject} (SUCCESS)"
fi

echo "${backup_results}" | mail -s "${subject}" root