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* Common: getVehicles

Fragt alle Fahrzeuge ab, speichert sie im SessionStorage ab und stellt eine Funktion zum Abrufen zur Verfügung

Ten skrypt nie powinien być instalowany bezpośrednio. Jest to biblioteka dla innych skyptów do włączenia dyrektywą meta // @require https://update.greasyfork.org/scripts/484898/1311830/%2A%20Common%3A%20getVehicles.js 

// ==UserScript==
// @name        * Common: getVehicles
// @namespace   bos-ernie.leitstellenspiel.de
// @version     1.0.0
// @license     BSD-3-Clause
// @author      BOS-Ernie
// @description Fragt alle Fahrzeuge ab, speichert sie im SessionStorage ab und stellt eine Funktion zum Abrufen zur Verfügung
// @icon        https://www.google.com/s2/favicons?sz=64&domain=leitstellenspiel.de
// @run-at      document-idle
// @grant       none
// ==/UserScript==

async function getVehicles() {
  if (
    !sessionStorage.bosErnieVehicles ||
    JSON.parse(sessionStorage.bosErnieVehicles).lastUpdate < new Date().getTime() - 5 * 1000 * 60
  ) {
    return updateVehiclesCache();
  }

  return JSON.parse(LZString.decompress(JSON.parse(sessionStorage.bosErnieVehicles).value));
}

async function updateVehiclesCache() {
  let vehicles = [];
  let nextPage = null;
  let page = 0;
  let totalPages = null;

  do {
    page++;

    if (page === 1) {
      nextPage = "/api/v2/vehicles";
    }

    const response = await fetch(nextPage).then(response => response.json());

    vehicles = vehicles.concat(
      response.result.map(vehicle => ({
        id: vehicle.id,
        caption: vehicle.caption,
        building_id: vehicle.building_id,
        vehicle_type: vehicle.vehicle_type,
        assigned_personnel_count: vehicle.assigned_personnel_count,
        tractive_vehicle_id: vehicle.tractive_vehicle_id,
      })),
    );

    nextPage = response.paging.next_page;

    if (totalPages === null) {
      totalPages = Math.ceil(response.paging.count_total / 10000);
    }
  } while (nextPage);

  const lastUpdate = new Date();

  try {
    const compressedVehicleData = LZString.compress(JSON.stringify(vehicles));

    const uncompressedSize = JSON.stringify(vehicles).length;
    const compressedSize = compressedVehicleData.length;

    sessionStorage.setItem(
      "bosErnieVehicles",
      JSON.stringify({
        lastUpdate: lastUpdate.getTime(),
        value: compressedVehicleData,
        uncompressedSize: uncompressedSize,
        compressedSize: compressedSize,
      }),
    );
  } catch (e) {}

  return vehicles;
}