#!/bin/sh
set -eu

backup_root="${ASSISTANT_BACKUP_DIR:-/home/m/assistant-backups/postgres}"
verify_script="${ASSISTANT_RESTORE_VERIFY_SCRIPT:-/home/m/assistant-ops/verify-postgres-restore.sh}"

latest="$(find "$backup_root" -mindepth 1 -maxdepth 1 -type d -regextype posix-extended -regex '.*/[0-9]{8}T[0-9]{6}Z$' -printf '%f\n' | sort | tail -n 1)"
if [ -z "$latest" ]; then
  echo "No completed PostgreSQL backup found in $backup_root" >&2
  exit 1
fi

case "$latest" in
  [0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]T[0-9][0-9][0-9][0-9][0-9][0-9]Z) ;;
  *) echo "Selected backup directory has invalid timestamp: $latest" >&2; exit 1 ;;
esac

exec "$verify_script" "$backup_root/$latest"