#!/bin/bash
# Script example for creating a dump
# required environment variables:
#   DB_BACKUP_TARGETFOLDER
#   DB_HOST
#   DB_USER
#   DB_PASSWORD
#   DB_NAME
# Duplicati UI configure as a pre script
# donwload from git
# curl  https://git.limbosolutions.com/kb/duplicati/raw/branch/main/docker/scripts/backupdb.sh > backupdb.sh | chmod +x backupdb.sh

set -e
if [ -z ${DB_BACKUP_TARGETFOLDER} ]
then
      echo "\$DB_BACKUP_TARGETFOLDER cannot be empty empty"
      exit -1
fi



TARGETFILENAME=db_dump_$(date -d "today" +"%Y%m%d%H%M%S").sql 

if [ -f /tmp/${TARGETFILENAME} ]
then
    rm /tmp/${TARGETFILENAME}
fi


mysqldump -h ${DB_HOST} --user=${DB_USER} -p"${DB_PASSWORD}" ${DB_NAME} > /tmp/${TARGETFILENAME}


if [ x$(find "$DB_BACKUP_TARGETFOLDER" -prune -empty) = x"$DB_BACKUP_TARGETFOLDER" ]; then
echo "folder is empty... ignoring clean db dump folder"
else
rm -r ${DB_BACKUP_TARGETFOLDER}/* 
fi

mv /tmp/${TARGETFILENAME} ${DB_BACKUP_TARGETFOLDER}/${TARGETFILENAME}