realtime tests.js

const https = require('https');
const http = require('http');

const getJSON = (options, onResult) => {
  console.log('rest::getJSON');
  const port = options.port == 443 ? https : http;

  let output = '';

  const req = port.request(options, (res) => {
    console.log(`${options.host} : ${res.statusCode}`);
    res.setEncoding('utf8');

    res.on('data', (chunk) => {
      output += chunk;
    });

    res.on('end', () => {
      let obj = JSON.parse(output);

      onResult(res.statusCode, obj);
    });
  });

  req.on('error', (err) => {
    // res.send('error: ' + err.message);
  });

  req.end();
};

const options = {
  host: 'us-central1-tracker-net.cloudfunctions.net',
  port: 443,
  path: '/cache?imei=860896050989276',
  method: 'GET',
  headers: {
    'Content-Type': 'application/json'
  }
};
setInterval(() => {
  getJSON(options, (statusCode, res) => {
    res.reverse();
    let yamldata = res[0];
    yamldata.ctrl = [];
    let found_update = res[1]
    console.log(yamldata.t > found_update.t)

    try {
      const curr_dt = (yamldata.dt || yamldata.ft || 0);
      const found_dt = (found_update.dt || found_update.ft || 0);
      const offline_pos = curr_dt < found_dt;
      const maxdate = (new Date().getTime() + 86400000 /*24h ahead*/);
      const in_the_future = yamldata.ft ?
                        Number(yamldata.ft) > maxdate :
                        yamldata.dt && Number(yamldata.dt) > maxdate;
      if (in_the_future) yamldata.ctrl.push("fut");
      if (offline_pos) yamldata.ctrl.push("off");
      if (!yamldata.ok) yamldata.ctrl.push("!ok");
      if (yamldata.lat == 0) yamldata.ctrl.push("!lat");
      if (in_the_future || offline_pos) {
        yamldata = { ...found_update, ctrl: yamldata.ctrl, t: yamldata.t };
      } else if (!yamldata.ok || yamldata.lat == 0) {
        yamldata.lat = found_update.lat;
        yamldata.lng = found_update.lng;
      };
      console.log(yamldata)
    } catch(e) {
      console.error(e)
    };
  })
}, 5000);