Untitled

// Create a route for the create API
router.post('/create', async (req, res, next) => {
  try {
    const { _id, name } = req.body;

    // Check if _id or name already exist
    const existingDocument = await YourModel.findOne({ $or: [{ _id }, { name }] });

    if (existingDocument) {
      if (existingDocument._id === _id) {
        return res.status(400).json({ error: 'Document with the same _id already exists.' });
      } else {
        return res.status(400).json({ error: 'Document with the same name already exists.' });
      }
    }

    // Create a new document
    const newDocument = new YourModel({ _id, name });
    await newDocument.save();

    return res.status(201).json({ message: 'Document created successfully' });
  } catch (error) {
    next(error); // Pass the error to the error handling middleware
  }
});