#!/bin/sh
set -eu

temporary=$(mktemp)
app_dir=$(CDPATH= cd -- "$(dirname "$0")/.." && pwd)
trap 'rm -f -- "$temporary"' EXIT HUP INT TERM

crontab -l 2>/dev/null | grep -v 'postgres-backup.sh' > "$temporary" || true
printf '%s\n' "30 3 * * 0 flock -w 3600 /tmp/miem-postgres-backup.lock $app_dir/infra/postgres-backup.sh || logger -t miem-postgres-backup -- 'backup skipped or failed'" >> "$temporary"
crontab "$temporary"