#!/usr/bin/env bash
set -euo pipefail
: "${POSTGRES_DB:?POSTGRES_DB is required}"
: "${POSTGRES_USER:?POSTGRES_USER is required}"
BACKUP_DIR="${BACKUP_DIR:-/var/backups/eventsa}"
RETENTION_DAYS="${RETENTION_DAYS:-14}"
STAMP="$(date +%Y%m%d-%H%M%S)"
mkdir -p "$BACKUP_DIR"
OUT="$BACKUP_DIR/${POSTGRES_DB}-${STAMP}.dump"
pg_dump -Fc -h "${POSTGRES_HOST:-127.0.0.1}" -p "${POSTGRES_PORT:-5432}" -U "$POSTGRES_USER" "$POSTGRES_DB" > "$OUT"
pg_restore -l "$OUT" >/dev/null
find "$BACKUP_DIR" -type f -name '*.dump' -mtime "+$RETENTION_DAYS" -delete
printf 'Backup OK: %s\n' "$OUT"