'use strict'

const MongoClient = require('mongodb').MongoClient
const url = 'mongodb://localhost:27017/test';
var count = 0
var max = 1000

MongoClient.connect(url, function(err, db) {
  if (err) { throw err }
  const collection = db.collection('data')
  const average = db.collection('averages')

  collection.find({}).toArray(function (err, data) {
    if (err) { throw err }
    average.insert({
      value: data.reduce((acc, v) => acc + v, 0) / data.length
    }, function (err) {
      if (err) { throw err }
      db.close()
    })
  })
})