Add a separate default distance for coarse reverse

query/reverse_defaults.js

@@ -13,6 +13,7 @@ module.exports = _.merge({}, peliasQuery.defaults, {
   'sort:distance:distance_type': 'plane',
 
   'boundary:circle:radius': '1km',
+  'boundary:circle:radius:coarse': '500km',
   'boundary:circle:distance_type': 'plane',
   'boundary:circle:optimize_bbox': 'indexed',
   'boundary:circle:_cache': true,

sanitiser/_geo_reverse.js

@@ -29,7 +29,12 @@ module.exports = function sanitize( raw, clean ){
 
     // if no radius was passed, set the default
     if ( _.isUndefined( raw['boundary.circle.radius'] ) ) {
-      raw['boundary.circle.radius'] = defaults['boundary:circle:radius'];
+      // the default is small unless layers other than venue or address were explicitly specified
+      if (clean.layers && clean.layers.length > 0 && !_.includes(clean.layers, 'venue') && !_.includes(clean.layers, 'address')) {
+        raw['boundary.circle.radius'] = defaults['boundary:circle:radius:coarse'];
+      } else {
+        raw['boundary.circle.radius'] = defaults['boundary:circle:radius'];
+      }
     }
 
     // santize the boundary.circle

test/unit/sanitiser/_geo_reverse.js

@@ -85,6 +85,32 @@ module.exports.tests.sanitize_boundary_country = function(test, common) {
     t.end();
   });
 
+  test('no boundary.circle.radius and coarse layers supplied should be set to coarse default', function(t) {
+    var raw = {
+      'point.lat': '12.121212',
+      'point.lon': '21.212121'
+    };
+    var clean = { layers: 'coarse' };
+    var errorsAndWarnings = sanitize(raw, clean);
+
+    t.equals(raw['boundary.circle.radius'], defaults['boundary:circle:radius:coarse'], 'should be from defaults');
+    t.equals(clean['boundary.circle.radius'], parseFloat(defaults['boundary:circle:radius:coarse']), 'should be same as raw');
+    t.end();
+  });
+
+  test('no boundary.circle.radius and coarse layer supplied should be set to coarse default', function(t) {
+    var raw = {
+      'point.lat': '12.121212',
+      'point.lon': '21.212121'
+    };
+    var clean = { layers: 'locality' };
+    var errorsAndWarnings = sanitize(raw, clean);
+
+    t.equals(raw['boundary.circle.radius'], defaults['boundary:circle:radius:coarse'], 'should be from defaults');
+    t.equals(clean['boundary.circle.radius'], parseFloat(defaults['boundary:circle:radius:coarse']), 'should be same as raw');
+    t.end();
+  });
+
   test('explicit boundary.circle.radius should be used instead of default', function(t) {
     var raw = {
       'point.lat': '12.121212',