eShopOnContainers/src/Services/Location/Locations.API/Model/Locations.cs

namespace Microsoft.eShopOnContainers.Services.Locations.API.Model
{
    using MongoDB.Bson;
    using MongoDB.Driver.GeoJsonObjectModel;
    using System.Collections.Generic;
    using MongoDB.Bson.Serialization.Attributes;

    public class Locations
    {
        [BsonRepresentation(BsonType.ObjectId)]
        public string Id { get; set; }
        public string Code { get; set; }
        [BsonRepresentation(BsonType.ObjectId)]
        public string Parent_Id { get; set; }
        public string Description { get; set; }
        public double Latitude { get; set; }
        public double Longitude { get; set; }
        public GeoJsonPoint<GeoJson2DGeographicCoordinates> Location { get; private set; }
        public GeoJsonPolygon<GeoJson2DGeographicCoordinates> Polygon { get; private set; }
        public void SetLocation(double lon, double lat) => SetPosition(lon, lat);
        public void SetArea(List<GeoJson2DGeographicCoordinates> coordinatesList) => SetPolygon(coordinatesList);

        private void SetPosition(double lon, double lat)
        {
            Latitude = lat;
            Longitude = lon;
            Location = new GeoJsonPoint<GeoJson2DGeographicCoordinates>(
                new GeoJson2DGeographicCoordinates(lon, lat));
        }

        private void SetPolygon(List<GeoJson2DGeographicCoordinates> coordinatesList)
        {
            Polygon = new GeoJsonPolygon<GeoJson2DGeographicCoordinates>(new GeoJsonPolygonCoordinates<GeoJson2DGeographicCoordinates>(
                 new GeoJsonLinearRingCoordinates<GeoJson2DGeographicCoordinates>(coordinatesList)));
        }
    }
}