frontend/src/components/SaveBeforeLeaveDialog.tsx

type SaveBeforeLeaveDialogProps = {
  open: boolean;
  onWait: () => void | Promise<void>;
  onProceed: () => void;
  onCancel: () => void;
};

export function SaveBeforeLeaveDialog({
  open,
  onWait,
  onProceed,
  onCancel,
}: SaveBeforeLeaveDialogProps) {
  if (!open) return null;

  return (
    <div className="fixed inset-0 z-50 flex items-center justify-center bg-gray-900/35 px-4">
      <div className="w-full max-w-md rounded-xl border border-gray-200 bg-white p-5 shadow-lg">
        <h3 className="text-base font-semibold text-gray-900">
          Changes are still saving
        </h3>
        <p className="mt-2 text-sm text-gray-600">
          Your latest edits may not be saved yet. You can wait for save to
          finish and continue automatically, or leave this page now.
        </p>
        <div className="mt-4 flex flex-wrap justify-end gap-2">
          <button
            type="button"
            onClick={onCancel}
            className="rounded-lg border border-gray-200 bg-white px-3 py-2 text-sm font-semibold text-gray-700 hover:bg-gray-50 transition"
          >
            Cancel
          </button>
          <button
            type="button"
            onClick={onProceed}
            className="rounded-lg border border-red-200 bg-red-50 px-3 py-2 text-sm font-semibold text-red-700 hover:bg-red-100 transition"
          >
            Leave without waiting
          </button>
          <button
            type="button"
            onClick={() => {
              void onWait();
            }}
            className="rounded-lg bg-emerald-600 px-3 py-2 text-sm font-semibold text-white hover:bg-emerald-700 transition"
          >
            Wait and continue
          </button>
        </div>
      </div>
    </div>
  );
}