solidarity-service/handler/haversine_distance.go

package handler

import (
	"github.com/paulmach/orb"
	"github.com/paulmach/orb/geojson"
	"solidarity-service/utils"
)

func (handler *SolidarityServiceHandler) CalculateDistanceBetweenFeatures(feature1, feature2 *geojson.Feature) int64 {
	coords1 := feature1.Geometry.(orb.Point)
	coords2 := feature2.Geometry.(orb.Point)
	distance := utils.Haversine(coords1[1], coords1[0], coords2[1], coords2[0])
	return int64(distance)
}