cars.json mod script

import { getCachedData, saveCachedData } from "./cache.js";
import { Address, CarWithCoordinates } from "./types.js";

const cars: CarWithCoordinates[] = getCachedData("cars");

type Cache = Record<string, { lat: number; lon: number }>;

function updateOwnershipCoordinates(cars: CarWithCoordinates[]): void {
  const addressCache: Cache = {};

  // Build a cache from available coordinates in any car_ownership
  for (const car of cars) {
    for (const ownership of car.car_ownership) {
      if (
        ownership.address &&
        ownership.address.lat !== undefined &&
        ownership.address.lon !== undefined
      ) {
        const addressKey = getAddressKey(ownership.address);
        if (addressKey == null) {
          console.log("no key found for", ownership.address);
          continue;
        }
        addressCache[addressKey] = {
          lat: ownership.address.lat,
          lon: ownership.address.lon,
        };
      }
    }
  }

  // Use the cache to populate missing coordinates in car_ownership
  for (const car of cars) {
    for (const ownership of car.car_ownership) {
      if (
        ownership.address &&
        (ownership.address.lat === undefined ||
          ownership.address.lon === undefined)
      ) {
        const addressKey = getAddressKey(ownership.address);
        if (addressKey == null) {
          console.log("no key found for", ownership.address);
          continue;
        }
        const cachedCoords = addressCache[addressKey];
        if (cachedCoords) {
          ownership.address.lat = cachedCoords.lat;
          ownership.address.lon = cachedCoords.lon;
        }
      }
    }
  }
}

function getAddressKey(address: Address) {
  // Create a unique key for each address based on its distinguishable properties
  return address.postal_code?.replaceAll(" ", "");
}

// Overwrite cars.json with new data
updateOwnershipCoordinates(cars);

saveCachedData("cars", cars);