warnings.js

import * as fs from "fs";
import jsonminify from "jsonminify";

// utility functions

const loadFile = async (file) => {
  let rawdata = fs.readFileSync(file);
  const data = JSON.parse(rawdata);

  return data;
};

const saveFile = async (dir, filename, data) => {
  if (!fs.existsSync(dir)) {
    fs.mkdirSync(dir, { recursive: true });
  }

  const path = dir + filename;
  const data_string = JSON.stringify(data);

  const debug = fs.writeFileSync(path, data_string, (err) => {
    if (err) throw err;
  });

  console.log(`${filename} saved.`);

  return true;
};

const makeMapURL = (warning) => {
  // skip if no geometry
  if (!warning.geometry) return null;

  const geojson = {
    type: "FeatureCollection",
    features: [{ geometry: warning.geometry }],
  };

  // make the tiniset json possible, and urlencode it
  const map_data = encodeURIComponent(jsonminify(JSON.stringify(geojson)));

  const url = `https://geojson.io/#data=data:application/json,${map_data}`;

  return url;
};

// primary function

const main = async () => {
  // const seen = await loadFile('./data/seen.json')
  const current_warnings = await loadFile("./tmp/download.json");

  console.log("- - - - - - -\n");
  console.log(current_warnings.title);
  console.log(`Last updated: `, current_warnings.updated);

  // loop through current warnings
  console.log(`${current_warnings.features.length} warnings in file...`);

  for (let i = 0; i < current_warnings.features.length; i++) {
    const warning = current_warnings.features[i];

    // // skip if this warning is not new
    // let matches = seen.indexOf(warning.properties.id)
    // if (matches > -1) {

    //     // We have a match, so this one is not new
    //     console.log(`Warning ${i + 1} is not new. Skipping.`)
    //     continue

    // }

    console.log(`\n-+-+-+- NEW WARNING! -+-+-+-\n`);
    console.log(`${warning.properties.event}`);
    console.log(`${warning.properties.headline}`);
    console.log(`Locations/counties included: ${warning.properties.areaDesc}`);
    console.log(`Warning time: ${warning.properties.effective}`);

    console.log("\n", warning.properties.description);

    const url = makeMapURL(warning);
    if (url) {
      console.log(`\nMap url: ${url}`);
    }

    // seen.push(warning.properties.id)
  }

  // await saveFile('./data/', 'seen.json', seen)

  console.log("\nDone!");
};

main().catch((err) => {
  console.error(err);
  process.exit(1);
});