search with optional bbox - initial commit +tests

package.json

@@ -36,7 +36,7 @@
     "express": "^4.8.8",
     "geojson": "^0.2.0",
     "geojson-extent": "^0.3.1",
-    "geopipes-elasticsearch-backend": "0.0.8",
+    "geopipes-elasticsearch-backend": "git://github.com/geopipes/elasticsearch-backend#geo_bbox",
     "pelias-esclient": "0.0.25",
     "toobusy": "^0.2.4"
   },

query/search.js

@@ -11,6 +11,10 @@ function generate( params ){
 
   var query = queries.distance( centroid, { size: params.size } );
 
+  if (params.bbox) {
+    query = queries.bbox ( centroid, { size: params.size, bbox: params.bbox } );
+  }
+
   // add search condition to distance query
   query.query.filtered.query = {
     query_string : {

sanitiser/_latlonzoom.js

@@ -9,9 +9,17 @@ function sanitize( req ){
     params = {};
   }
 
+  var is_invalid_lat = function(lat) {
+    return isNaN( lat ) || lat < -90 || lat > 90;
+  };
+
+  var is_invalid_lon = function(lon) {
+    return isNaN( lon ) || lon < -180 || lon > 180;
+  };
+
   // lat
   var lat = parseFloat( params.lat, 10 );
-  if( isNaN( lat ) || lat < -90 || lat > 90 ){
+  if( is_invalid_lat(lat) ){
     return {
       'error': true,
       'message': 'invalid param \'lat\': must be >-90 and <90'
@@ -21,7 +29,7 @@ function sanitize( req ){
 
   // lon
   var lon = parseFloat( params.lon, 10 );
-  if( isNaN( lon ) || lon < -180 || lon > 180 ){
+  if( is_invalid_lon(lon) ){
     return {
       'error': true,
       'message': 'invalid param \'lon\': must be >-180 and <180'
@@ -37,6 +45,28 @@ function sanitize( req ){
     clean.zoom = 10; // default
   }
 
+  // bbox
+  if (params.bbox) {
+    var bbox = [];
+    var bboxArr = params.bbox.split(',');
+    if( Array.isArray(bboxArr) && bboxArr.length === 4 ){
+      bboxArr.forEach(function(latlon, index) {
+        latlon = parseFloat(latlon, 10);
+        if ( !(index % 2 === 0 ? is_invalid_lat(latlon) : is_invalid_lon(latlon)) ) {
+          bbox.push(latlon);
+        }
+      });
+      if (bbox.length === 4) {
+        clean.bbox = bbox;
+      } else {
+        return {
+          'error': true,
+          'message': 'invalid bbox'
+        };
+      }
+    }
+  } 
+
   req.clean = clean;
   
   return { 'error': false };

test/unit/query/search.js

@@ -15,16 +15,17 @@ module.exports.tests.query = function(test, common) {
     var query = generate({
       input: 'test', size: 10,
       lat: 29.49136, lon: -82.50622,
-      bbox: {
-        bottom_left: {
-          lat: 11.51053655297385,
-          lon: -103.16362455862279
-        },
-        top_right: {
-          lat: 47.472183447026154,
-          lon: -61.84881544137721
-        }
-      },
+      bbox: [47.47, -61.84, 11.51, -103.16],
+      // bbox: { //TODO write a test where no bbox is provided
+      //   bottom_left: {
+      //     lat: 11.51053655297385,
+      //     lon: -103.16362455862279
+      //   },
+      //   top_right: {
+      //     lat: 47.472183447026154,
+      //     lon: -61.84881544137721
+      //   }
+      // },
       layers: ['test']
     });
 
@@ -44,34 +45,25 @@ module.exports.tests.query = function(test, common) {
             'bool': {
               'must': [
                 {
-                  'geo_distance': {
-                    'distance': '50km',
-                    'distance_type': 'plane',
-                    'optimize_bbox': 'indexed',
-                    '_cache': true,
+                  'geo_bounding_box': {
                     'center_point': {
-                      'lat': '29.49',
-                      'lon': '-82.51'
+                      'top_right': {
+                        'lat': '47.47',
+                        'lon': '-61.84'
+                      },
+                      'bottom_left': {
+                        'lat': '11.51',
+                        'lon': '-103.16'
+                      }
                     }
                   }
                 }
               ]
             }
-           }
-        }
-      },
-      'sort': [
-        {
-          '_geo_distance': {
-            'center_point': {
-              'lat': 29.49136,
-              'lon': -82.50622
-            },
-            'order': 'asc',
-            'unit': 'km'
           }
         }
-      ],
+      },
+      'sort': [],
       'size': 10
     };