Map of active fires

imports/api/ActiveFires/ActiveFires.js

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+/* eslint-disable consistent-return */
+
+import { Mongo } from 'meteor/mongo';
+import SimpleSchema from 'simpl-schema';
+
+const ActiveFires  = new Mongo.Collection('activefires');
+
+ActiveFires.allow({
+  insert: () => false,
+  update: () => false,
+  remove: () => false,
+});
+
+ActiveFires.deny({
+  insert: () => true,
+  update: () => true,
+  remove: () => true,
+});
+
+/* Sample:
+ *     {
+ *         "_id" : ObjectId("5a208d7579095a1adba48191"),
+ *         "ourid" : {
+ *                 "type" : "Point",
+ *                 "coordinates" : [
+ *                         -42.84192,
+ *                         -25.54453
+ *                 ]
+ *         },
+ *         "lat" : 9.743,
+ *         "lon" : -63.483,
+ *         "updatedAt" : ISODate("2017-11-30T22:02:39.644Z"),
+ *         "type" : "viirs",
+ *         "when" : ISODate("2017-11-30T05:30:00Z"),
+ *         "acq_date" : "2017-11-30",
+ *         "acq_time" : "04:12",
+ *         "scan" : 0.5,
+ *         "track" : 0.4,
+ *         "satellite" : "N",
+ *         "confidence" : "nominal",
+ *         "version" : "1.0NRT",
+ *         "frp" : 4.3,
+ *         "daynight" : "N",
+ *         "bright_ti4" : 330.2,
+ *         "bright_ti5" : 291,
+ *         "createdAt" : ISODate("2017-11-30T08:07:33.720Z")
+ *     }
+ * */
+
+ActiveFires.schema = new SimpleSchema({
+  lat: SimpleSchema.Integer,
+  lon: SimpleSchema.Integer,
+  scan: Number,
+  type: String,
+  acq_date: String,
+  acq_time: String,
+  when: Date,
+  createdAt: Date,
+  updatedAt: Date
+  }
+);
+
+ActiveFires.attachSchema(ActiveFires.schema);
+
+export default ActiveFires;

imports/api/ActiveFires/server/publications.js

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+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);
+});