using elasticsearch-backend#centroid-optional queries for search

package.json

@@ -36,7 +36,7 @@
     "express": "^4.8.8",
     "geojson": "^0.2.0",
     "geojson-extent": "^0.3.1",
-    "geopipes-elasticsearch-backend": "git://github.com/geopipes/elasticsearch-backend#geo_bbox",
+    "geopipes-elasticsearch-backend": "git://github.com/geopipes/elasticsearch-backend#centroid-optional",
     "is-object": "^1.0.1",
     "pelias-esclient": "0.0.25",
     "toobusy": "^0.2.4"

query/search.js

@@ -4,59 +4,19 @@ var logger = require('../src/logger'),
 
 function generate( params ){
 
-  var query = {
-    'query': {
-      'filtered': {
-        'query': {
-          'match_all': {}
-        },
-        'filter' : {
-          'bool': {
-            'must': []
-          }
-        }
-      }
-    },
-    'size': params.size
-  };
-
-  // TODO: DRY (the following lines are repeated here and in geopipes-elasticsearchbackend)
-  // query/geo_bbox - cleanup necessary #techdebt
-  if (params.bbox) {
-    var options = {
-      top   : Number( params.bbox.top ).toFixed(2),   // @note: make filter cachable
-      right : Number( params.bbox.right ).toFixed(2), // precision max ~1.113km off
-      bottom: Number( params.bbox.bottom ).toFixed(2),
-      left  : Number( params.bbox.left ).toFixed(2),
-      size: params.size || 1,
-      field: params.field || 'center_point'
-    };
-    var filter = {
-      'geo_bounding_box' : {
-        '_cache': true // Speed up duplicate queries. Memory impact?
-      }
-    };
-
-    filter.geo_bounding_box[ options.field ] = {
-      'top'   : options.top,
-      'right' : options.right,
-      'bottom': options.bottom,
-      'left'  : options.left,
-    };
-    query.query.filtered.filter.bool.must.push( filter );
-  }
+  var centroid = null;
 
   if ( params.lat && params.lon ){
-    var centroid = {
+    centroid = {
       lat: params.lat,
       lon: params.lon
     };
-    query = queries.distance( centroid, { size: params.size } );
-    if (params.bbox) {
-      query = queries.bbox ( centroid, { size: params.size, bbox: params.bbox } );
-    }
-  }
+  } 
   
+  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 = {