Work in progress

server.go

@@ -42,7 +42,13 @@ func executeQuery(rw http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	log.Print(request)
+	var geo *geoContext
+	if request.Geo != nil {
+		geo.latitude = request.Geo.Latitude
+		geo.longitude = request.Geo.Longitude
+	}
+
+	context := queryContext{geo, convertFeatures(request.Profile), request.WalkingDist}
 
 	// function runQuery(query, callback) {
 	//     query.profile  = fixupProfile(query.profile);

types.go

@@ -70,9 +70,7 @@ type jsonRemoveCategoryResponse struct {
 }
 
 type queryContext struct {
-	geo         geoContext
-	latitude    float64
-	longitude   float64
+	geo         *geoContext
 	profile     featureMap
 	walkingDist float64
 }
@@ -95,7 +93,6 @@ type queryBounds struct {
 type geoContext struct {
 	latitude  float64
 	longitude float64
-	valid     bool
 }
 
 type record struct {

util.go

@@ -29,6 +29,15 @@ import (
 	"sort"
 )
 
+func convertFeatures(features jsonFeatureMap) featureMap {
+	resultMap := make(featureMap)
+	for key, value := range features {
+		resultMap[key] = value
+	}
+
+	return resultMap
+}
+
 func innerProduct(features1 featureMap, features2 featureMap) float64 {
 	var result float64
 	for key, value1 := range features1 {
@@ -100,7 +109,7 @@ func computeRecordGeo(entries records, context queryContext) {
 	distUserMax := 0.0
 
 	for _, record := range entries {
-		if context.geo.valid {
+		if context.geo != nil {
 			userPoint := geo.NewPoint(context.geo.latitude, context.geo.longitude)
 			recordPoint := geo.NewPoint(record.geo.latitude, context.geo.longitude)
 			record.distanceToUser = userPoint.GreatCircleDistance(recordPoint)