#!/usr/bin/env bash
# Dumps the Postgres database from the running "postgres" container into ./backups/,
# in pg_dump's custom format (compressed, restorable with pg_restore — see restore-db.sh).
#
# Usage: scripts/backup-db.sh
set -euo pipefail

cd "$(dirname "$0")/.."

mkdir -p backups
timestamp="$(date +%Y%m%d_%H%M%S)"
out="backups/dnd_backup_${timestamp}.dump"
trap 'rm -f "${out}"' ERR

echo "Dumping database into ${out} ..."
docker compose exec -T postgres sh -c 'pg_dump -U "$POSTGRES_USER" -d "$POSTGRES_DB" -F c' > "${out}"

size="$(du -h "${out}" | cut -f1)"
echo "Done: ${out} (${size})"