import { connectToDatabase } from '../../utils/helpers/dbHelpers';

async function handler(req, res) {
  if (req.method !== 'GET') {
    return;
  }

  const pageIndex = req.query.page;

  if (pageIndex < 1) {
    res.status(422).json({
      message: 'Page does not exist ',
    });
    return;
  }

  const client = await connectToDatabase();
  const db = client.db();

  const dataCount = await db.collection('randomData').countDocuments();

  if ((pageIndex - 1) * 4 >= dataCount) {
    res.status(422).json({
      message: 'Page does not exist ',
    });
    client.close();
    return;
  }

  const dataFromDB = await db
    .collection('randomData')
    .find()
    .skip((pageIndex - 1) * 4)
    .limit(4)
    .toArray();

  if (!dataFromDB) {
    res.status(422).json({ message: 'No data!' });
    client.close();
    return;
  }

  res.status(201).json({
    message: 'Created user!',
    data: dataFromDB,
    dataCount: dataCount,
  });

  setTimeout(() => {
    client.close();
  }, 1500);
}

export default handler;