scripts/update_imagery.js

/* eslint-disable no-console */
import fs from 'node:fs';
import prettyStringify from 'json-stringify-pretty-compact';
import imageryJSON from 'editor-layer-index/imagery.json' assert {type: 'json'};


let sources = imageryJSON;
if (fs.existsSync('./data/manual_imagery.json')) {
  // we can include additional imagery sources that aren't in the index
  sources = sources.concat(JSON.parse(fs.readFileSync('./data/manual_imagery.json')));
}

let imagery = [];

// ignore imagery more than 20 years old..
let cutoffDate = new Date();
cutoffDate.setFullYear(cutoffDate.getFullYear() - 20);


const discard = {
  'osmbe': true,                        // 'OpenStreetMap (Belgian Style)'
  'osmfr': true,                        // 'OpenStreetMap (French Style)'
  'osm-mapnik-german_style': true,      // 'OpenStreetMap (German Style)'
  'HDM_HOT': true,                      // 'OpenStreetMap (HOT Style)'
  'osm-mapnik-black_and_white': true,   // 'OpenStreetMap (Standard Black & White)'
  'osm-mapnik-no_labels': true,         // 'OpenStreetMap (Mapnik, no labels)'
  'OpenStreetMap-turistautak': true,    // 'OpenStreetMap (turistautak)'

  'hike_n_bike': true,                  // 'Hike & Bike'
  'landsat': true,                      // 'Landsat'
  'skobbler': true,                     // 'Skobbler'
  'public_transport_oepnv': true,       // 'Public Transport (ÖPNV)'
  'tf-cycle': true,                     // 'Thunderforest OpenCycleMap'
  'tf-landscape': true,                 // 'Thunderforest Landscape'
  'tf-outdoors': true,                  // 'Thunderforest Outdoors'
  'qa_no_address': true,                // 'QA No Address'
  'wikimedia-map': true,                // 'Wikimedia Map'

  'openinframap-petroleum': true,
  'openinframap-power': true,
  'openinframap-telecoms': true,
  'openpt_map': true,
  'openrailwaymap': true,
  'openseamap': true,
  'opensnowmap-overlay': true,

  'US-TIGER-Roads-2012': true,
  'US-TIGER-Roads-2014': true,

  'Waymarked_Trails-Cycling': true,
  'Waymarked_Trails-Hiking': true,
  'Waymarked_Trails-Horse_Riding': true,
  'Waymarked_Trails-MTB': true,
  'Waymarked_Trails-Skating': true,
  'Waymarked_Trails-Winter_Sports': true,

  'OSM_Inspector-Addresses': true,
  'OSM_Inspector-Geometry': true,
  'OSM_Inspector-Highways': true,
  'OSM_Inspector-Multipolygon': true,
  'OSM_Inspector-Places': true,
  'OSM_Inspector-Routing': true,
  'OSM_Inspector-Tagging': true,

  'EOXAT2018CLOUDLESS': true
};

const supportedWMSProjections = [
  // Web Mercator
  'EPSG:3857',
  // alternate codes used for Web Mercator
  'EPSG:900913',
  'EPSG:3587',
  'EPSG:54004',
  'EPSG:41001',
  'EPSG:102113',
  'EPSG:102100',
  'EPSG:3785',
  // WGS 84 (Equirectangular)
  'EPSG:4326'
];


sources.forEach(source => {
  if (source.type !== 'tms' && source.type !== 'wms' && source.type !== 'bing') return;
  if (source.id in discard) return;

  let im = {
    id: source.id,
    name: source.name,
    type: source.type,
    template: source.url
  };

  // Some sources support 512px tiles
  if (source.id === 'Mapbox') {
    im.template = im.template.replace('.jpg', '@2x.jpg');
    im.tileSize = 512;
  } else if (source.id === 'mtbmap-no') {
    im.tileSize = 512;
  } else if (source.id === 'mapbox_locator_overlay') {
    im.template = im.template.replace('{y}', '{y}{@2x}');
  }

  // Some WMS sources are supported, check projection
  if (source.type === 'wms') {
    const projection = source.available_projections && supportedWMSProjections.find(p => source.available_projections.indexOf(p) !== -1);
    if (!projection) return;
    if (sources.some(other => other.name === source.name && other.type !== source.type)) return;
    im.projection = projection;
  }


  let startDate, endDate, isValid;

  if (source.end_date) {
    endDate = new Date(source.end_date);
    isValid = !isNaN(endDate.getTime());
    if (isValid) {
      if (endDate <= cutoffDate) return;  // too old
      im.endDate = endDate;
    }
  }

  if (source.start_date) {
    startDate = new Date(source.start_date);
    isValid = !isNaN(startDate.getTime());
    if (isValid) {
      im.startDate = startDate;
    }
  }

  let extent = source.extent || {};
  if (extent.min_zoom || extent.max_zoom) {
    im.zoomExtent = [
      extent.min_zoom || 0,
      extent.max_zoom || 22
    ];
  }

  if (extent.polygon) {
    im.polygon = extent.polygon;
  } else if (extent.bbox) {
    im.polygon = [[
      [extent.bbox.min_lon, extent.bbox.min_lat],
      [extent.bbox.min_lon, extent.bbox.max_lat],
      [extent.bbox.max_lon, extent.bbox.max_lat],
      [extent.bbox.max_lon, extent.bbox.min_lat],
      [extent.bbox.min_lon, extent.bbox.min_lat]
    ]];
  }

  if (source.id === 'mapbox_locator_overlay') {
    im.overzoom = false;
  }

  const attribution = source.attribution || {};
  if (attribution.url) {
    im.terms_url = attribution.url;
  }
  if (attribution.text) {
    im.terms_text = attribution.text;
  }
  if (attribution.html) {
    im.terms_html = attribution.html;
  }

  ['best', 'default', 'description', 'encrypted', 'icon', 'overlay', 'tileSize'].forEach(prop => {
    if (source[prop]) {
      im[prop] = source[prop];
    }
  });

  imagery.push(im);
});


imagery.sort((a, b) => a.name.localeCompare(b.name));

fs.writeFileSync('data/imagery.json', prettyStringify(imagery));
fs.writeFileSync('dist/data/imagery.min.json', JSON.stringify(imagery));