Map of active fires

imports/api/ActiveFires/server/publications.js

@@ -0,0 +1,74 @@
+import { Meteor } from 'meteor/meteor';
+import { check, Match } from 'meteor/check';
+import ActiveFires from '../ActiveFires';
+
+Meteor.publish('activefires', function activefires() {
+  return ActiveFires.find();
+});
+
+const validZoom = Match.Where((zoom) => {
+  // http://wiki.openstreetmap.org/wiki/Zoom_levels
+  check(zoom, Number);
+  return zoom >= 0 && zoom <= 19;
+});
+
+// https://github.com/3stack-software/meteor-match-library
+var NumberBetween = function (min, max) {
+  return Match.Where(function (x) {
+    check(x, Number);
+    return min <= x && x <= max;
+  });
+};
+
+var NullOr = function (type) {
+  return Match.Where(function (x) {
+    if (x === null) {
+      return true;
+    }
+    check(x, type);
+    return true;
+  });
+};
+
+
+const zoomMetersPerPixel = [156412, 78206, 39103, 19551, 9776, 4888, 2444, 1222, 610.984, 305.492, 152.746, 76.373, 38.187, 19.093, 9.547, 4.773, 2.387, 1.193, 0.596, 0.298];
+
+var activefires = function(zoom, lat, lng) {
+  // latitude -90 and 90 and the longitude between -180 and 180
+  check(lat, NumberBetween(-90, 90));
+  check(lng, NumberBetween(-180, 180));
+
+  // console.log("Zoom: " + zoom + " lat: " + lat + " lng: " + lng);
+  // console.log("Meters per pixel: " + zoomMetersPerPixel[zoom]);
+
+  // console.log(geoData);
+  return ActiveFires.find({
+    ourid: {
+      $near : {
+        $geometry: {
+          type: "Point",
+          coordinates: [ lng, lat]
+        },
+        $minDistance: 0,
+        $maxDistance: zoomMetersPerPixel[zoom] * 1000
+      }
+    }
+  });
+}
+
+Meteor.publish('activefiresmyloc', function(zoom, lat, lng) {
+  check(zoom, validZoom);
+  check(lat, NullOr(Number));
+  check(lng, NullOr(Number));
+  if (lat === null || lng === null) {
+    var clientIP = this.connection.clientAddress;
+    if (clientIP === '127.0.0.1') {
+      clientIP = '80.58.61.250' // Some Spain IP address
+    }
+    var geoData = IPGeocoder.geocode(clientIP);
+    var location = geoData.location;
+    lat = location.latitude;
+    lng = location.longitude;
+  }
+  return activefires(zoom, lat, lng);
+});