#!/usr/bin/env bash
set -euo pipefail
umask 077
[[ $# == 1 && -d $1 ]] || { echo 'Usage: db-backup-daily.sh /absolute/backup-directory' >&2; exit 1; }
root=$(cd "$(dirname "$0")/.." && pwd)
# Serialize daily runs to bound space usage. On failure retain dump for diagnosis.
exec 9>"$1/.randomayzer-backup.lock"
flock -n 9 || exit 0
backup=$("$root/tools/db-backup.sh" "$1")
"$root/tools/db-restore-check.sh" "$backup"
# Retain fourteen daily backups; only this application's named dumps are eligible.
find "$1" -maxdepth 1 -type f -name 'randomayzer-*.dump' -mtime +14 -delete
echo 'PASS daily backup and restore verification'