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/*
Example request: http://koop.com/craigslist/washingtondc/apartments/FeatureServer/0/query?where=price>20&f=geojson
Req is the express request object: https://expressjs.com/en/4x/api.html#req
  req.params = {
    host: 'washingtondc',
    id: 'apartments'
  }
 req.query = {
   where: 'price > 20',
   f: geojson

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{
  "info": {
    "_indexFields": false,
    "_indexGeometry": false,
    "url": "https:\/\/tigerweb.geo.census.gov\/arcgis\/rest\/services\/Census2010\/Tracts_Blocks\/MapServer",
    "_indexGeohash": false,
    "itemModified": 1500480948000,
    "version": 3,
    "itemTitle": "2010 Census Population & Housing Unit Counts",
    "type": "Feature Service"

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{
  "_indexFields": false,
  "retrieved_at": 1524775095476,
  "failedLastImport": false,
  "lastImportCompleted": 1524775109941,
  "version": 3,
  "fullFile": "files\/593b88391b614123890f54a1db8fbf55_0\/full\/593b88391b614123890f54a1db8fbf55_0.txt",
  "type": "Feature Service",
  "status": "Cached",
  "generating": {

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Network details during a AGOL session for adding a "secured item" to Content

1. ArcGIS checks resource server URL to see if its secure

Request GET https://www.arcgis.com/sharing/rest/portals/checkurl

GET params:

{ 
 url: https:///rest/services/Hosted/cb_2017_us_state_500k/FeatureServer?f=json

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  metadata: {
    name: String, // The name of the layer
    description: String, // The description of the layer
    extent: Array, // valid extent array e.g. [[180,90],[-180,-90]]
    displayField: String, // The display field to be used by a client
    geometryType: String // REQUIRED if no features are returned with this object Point || MultiPoint || LineString || MultiLineString || Polygon || MultiPolygon
    idField: Integer || String, // unique identifier field,
    maxRecordCount: Number, // the maximum number of features a provider can return at once
    limitExceeded: Boolean, // whether or not the server has limited the features returned
    timeInfo: Object // describes the time extent and capabilities of the layer,

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let geom = {"Polygon_Geometry": ["[-117.10, 34.20],[-117.19, 34.05],[-118.19, 34.20],[-117.10, 34.20]"]}

let json = `[${geom.Polygon_Geometry[0]}]`;

console.log(JSON.parse(json))

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function bubbleSort(arr){
   // Get Array length
   var len = arr.length;
   
   // Create and outer-loop with a decrementing index i
   for (var i = len-1; i>=0; i--){
     
     // Create and inner-loop with incrementing index j that has a max index i
     // So, the first time the innerloop cycles,  it will loop a number of times equal to the array length.  
     // The next cycle it will be one less, and so forth

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/**
 * Performs a binary search on the provided *sorted* list and returns the index of the item if found. If it can't be found it'll return -1.
 *
 * @param {*[]} sorted (ascending) list Items to search through.
 * @param {*} item The item-value to look for.
 * @return {Number} The index of the item if found, -1 if not.
 */
function binarySearch(list, searchValue) {
    var minIndex = 0;
    var maxIndex = list.length - 1;