#!/usr/bin/env sh

# CONFIG
### Example Config File ############
###
### PORT=5432
### DIR=/var/lib/pgsql/backup
### COMPRESSION=zstd
### COMP_LEVEL=14
### THREADS=2
###
####################################

source ${HOME}/.postgres_backup.conf
# END CONFIG

## Check if automated, set appropriate directory
[ "$1" = "auto" ] && DIR=${DIR}/auto || DIR=${DIR}/manual

## Set date for timestamp
DATE=$(date +%Y%m%d-%H%M)

## Get list of DBs
list_db=$(psql -p${PORT} -U postgres -t -c 'select datname from pg_database;' | grep -v 'template0\|template1\|postgres' | sed '/^$/d')

for db in $list_db; do
	case $COMPRESSION in
		xz)
			pg_dump -O $db | xz -T${THREADS} -${COMP_LEVEL} - > ${DIR}/${db}-${DATE}.dmp.xz
			;;
		zstd)
			pg_dump -O $db | zstd -T${THREADS} -${COMP_LEVEL} -z - > ${DIR}/${db}-${DATE}.dmp.zst
			;;
		*)
			echo "ERROR 11: Compression not configured correctly!"
		        exit 11
			;;
	esac
done

## Dump Globals
pg_dumpall -p${PORT} -g > ${DIR}/globals_${DATE}.dmp

exit 0