app.get('/pdf-bulk-upload/:batchId/status', async (req, res) => {
  const { batchId } = req.params;
  const state = await redis.hgetall(`batch:${batchId}`);
  
  if (!state || Object.keys(state).length === 0) {
    return res.status(404).json({ error: 'Batch not found or expired' });
  }
  
  res.json({
    status: state.status,
    totalFiles: parseInt(state.totalFiles) || 0,
    processed: parseInt(state.processed) || 0,
    linked: parseInt(state.linked) || 0,
    skipped_no_match: parseInt(state.skipped_no_match) || 0,
    skipped_already_exists: parseInt(state.skipped_already_exists) || 0,
    failed: parseInt(state.failed) || 0
  });
});

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