#!/bin/bash

# This file will trigger ecodms to create a new backup
#touch /opt/docker/ecodms/ecoDMS/backup/create
BACKUP_PATH=/source/ecodms

touch ${BACKUP_PATH}/create

MAX_RUNTIME=$((SECONDS+3600))

while [ -f ${BACKUP_PATH}/create ]
do
      sleep 31
      if [ $SECONDS -gt $MAX_RUNTIME ]; then
              exit 1
      fi
done

echo "Backup seems to be started. create file is deleted"

while : ; do
  FILENAME=`ls -rt ${BACKUP_PATH}/*.zip | tail -n1`
  SIZE1=`stat -c%s "$FILENAME"`
  sleep 11
  SIZE2=`stat -c%s "$FILENAME"`

  if [ "$SIZE1" -eq "$SIZE2" ]; then
    echo "no file size change detected anymore, starting copy job"
    break
  fi

  if [ $SECONDS -gt $MAX_RUNTIME ]; then
    exit 1
  fi
done

#cp "$FILENAME" /mnt/fritznas/ASMedia-asm1153e-01/backup/ecodms/backup.zip
#mv -T "$FILENAME" /mnt/fritznas/ASMedia-asm1153e-01/backup/ecodms/backup.zip

# keep three youngest files and delete rest of them
ls -1tr ${BACKUP_PATH} | head -n -3 | xargs -d '\n'  rm -f --

exit 0