const mongoose = require('mongoose');
mongoose.connect('mongodb://backone_inspect:backone_inspect@mongodb.prod.proit.id:27017/backone_inspect_0').then(async () => {
  const db = mongoose.connection.db;
  const now = new Date();
  const filter = { timestamp: { $gte: new Date(now.getTime() - 24 * 3600000) } };
  const raw = await db.collection('countrystats').aggregate([
    { $match: filter },
    { $group: {
        _id: '$country_name',
        download: { $sum: '$download' },
        upload: { $sum: '$upload' }
    }}
  ]).toArray();
  console.log(raw.length, 'countries in last 24h');
  mongoose.disconnect();
});