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let generateMap = () => {
  let recentPoints = JSON.parse(jQuery("div#geojson-data-holder > div").text())
  let lastPoint = recentPoints.features[recentPoints.features.length-1]

  let map = L.map('geojson-map-holder').setView([lastPoint.geometry.coordinates[1], lastPoint.geometry.coordinates[0]], 13);
  
  L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw', {
    maxZoom: 18,
    attribution: 'Map data &copy; <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, ' +
      '<a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
      'Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
    id: 'mapbox.light'
  }).addTo(map);
  
  var baseballIcon = L.icon({
    iconUrl: 'baseball-marker.png',
    iconSize: [32, 37],
    iconAnchor: [16, 37],
    popupAnchor: [0, -28]
  });
  
  function onEachFeature(feature, layer) {
    var popupContent = (new Date(feature.properties.tst * 1000)).toString();
  
    if (feature.properties && feature.properties.popupContent) {
      popupContent += feature.properties.popupContent;
    }
  
    layer.bindPopup(popupContent);
  }

  L.geoJSON(recentPoints, {
  
    filter: function (feature, layer) {
      if (feature.properties) {
        return feature.properties.underConstruction !== undefined ? !feature.properties.underConstruction : true;
      }
      return false;
    },
  
    onEachFeature: onEachFeature
  }).addTo(map);
}

jQuery('head').append('<link rel="stylesheet" href="https://unpkg.com/leaflet@1.3.1/dist/leaflet.css">');

jQuery.getScript( "https://unpkg.com/leaflet@1.3.1/dist/leaflet.js", function() { generateMap() });