#!/bin/bash

set -eu -o pipefail

readonly POSTGRES_VER={{ postgres1c_version }}
readonly POSTGRES_COMPRESS={{ postgres1c_backup_compression }}

echo "Starting 1C backup at $(date +F'%Y-%m-%d %H:%M:%S')"

# db list array
echo "getting a list of database names via psql ..."
databases=($(/opt/pgpro/1c-${POSTGRES_VER}/bin/psql -t -A -c "SELECT datname FROM pg_database WHERE datname <> ALL ('{template0,template1,postgres}')"))
echo "database names: ${databases[@]}"

# get current seconds since shell invocation
start_time=$SECONDS

# iterate over the db list array
for db in "${databases[@]}"; do
  start_one_time=$SECONDS
  echo "${db} - backup started"

  # local backup command (don't forget to sync to a remote server by borg or some other tool)
  # -Fc: "custom format" https://www.postgresql.org/docs/current/app-pgdump.html
  # -Z: compression
  /opt/pgpro/1c-${POSTGRES_VER}/bin/pg_dump -d ${db} -Fc -Z ${POSTGRES_COMPRESS} -f /var/backups/postgres1c/backup_${db}.dump

  # notify about the db dump completion
  echo "${db} - backup done"
  total_one_time=$(($SECONDS - start_one_time))
  echo "${db} - total time: ${total_one_time} sec"
done

total_time=$(($SECONDS - start_time))
echo "job completed at $(date); total time elapsed: ${total_time} sec"