AppReports/seeds/fake.js

/*
 * Copyright (C) Sapphirecode - All Rights Reserved
 * This file is part of appreports which is released under GPL-3.0-or-later.
 * See file 'LICENSE' for full license details.
 * Created by Timo Hocker <timo@scode.ovh>, August 2020
 */

'use strict';

const faker = require ('faker');

const apps = [];

async function create_app (knex) {
  const [ id ] = await knex ('app')
    .insert (
      { name: faker.random.word () }
    );
  apps.push (id);
}

let last_t = 0;
let last_h = 0;

function create_log (timestamp) {
  last_t += faker.random.number (3) - 1;
  last_h += faker.random.number (2) - 1;

  const data = {
    light:       faker.random.number (10),
    temperature: last_t,
    humidity:    last_h
  };
  return {
    app_id:       faker.random.arrayElement (apps),
    message:   faker.random.words (),
    data:      JSON.stringify (data),
    timestamp
  };
}

async function seed (knex) {
  // eslint-disable-next-line no-console
  console.log ('creating seeds');
  for (let i = 0; i < 5; i++)
    // eslint-disable-next-line no-await-in-loop
    await create_app (knex);

  const log = (Array (1000))
    .fill (() => null)
    .map (() => faker.date.recent (30))
    .sort ()
    .map ((t) => create_log (t));

  await knex.batchInsert ('log', log, 10);
}

module.exports = { seed };