How to handle facebook messenger user location ? C# Botframework – Facebook api

I’m designing a bot using Microsoft botframework in C# which will be deployed on messenger.

On of the features I’m trying to include is displaying attractions around the users location. I’ve found this curl request on facebooks development site.

curl -X POST -H "Content-Type: application/json" -d '{
  "recipient":{
    "id":"USER_ID"
  },
  "message":{
    "text":"Please share your location:",
    "quick_replies":[
      {
        "content_type":"location",
      }
    ]
  }
}' "https://graph.facebook.com/v2.6/me/messages?access_token=PAGE_ACCESS_TOKEN"

Appart from this I haven’t found a way to specify when to send a request for the users location as well as a way to store the location so i can use it to do the nearby search.

If anyone could point me in the correct direction I’d be greatly appreciative.

Here’s a nice example of something i’m trying to replicate.

This is an example of what I’m trying to replicate.

[LuisIntent("Stores")]
        public async Task Stores(IDialogContext context, LuisResult result)
        {
            var msg = "location";
            if (msg == "location")
            {
                Lresult = result;
                await context.Forward(new FacebookLocationDialog(), ResumeAfter, msg, CancellationToken.None);
            }
            else
            {
                await Stores(context, result);
            }
        }

        public async Task ResumeAfter(IDialogContext context, IAwaitable<Place> result)
        {
            var place = await result;

            if (place != default(Place))
            {
                var geo = (place.Geo as JObject)?.ToObject<GeoCoordinates>();
                if (geo != null)
                {
                    var reply = context.MakeMessage();
                    reply.Attachments.Add(new HeroCard
                    {
                        Title = "Open your location in bing maps!",
                        Buttons = new List<CardAction> {
                            new CardAction
                            {
                                Title = "Your location",
                                Type = ActionTypes.OpenUrl,
                                Value = $"https://www.bing.com/maps/?v=2&cp={geo.Latitude}~{geo.Longitude}&lvl=16&dir=0&sty=c&sp=point.{geo.Latitude}_{geo.Longitude}_You%20are%20here&ignoreoptin=1"
                            }
                        }

                    }.ToAttachment());

                    await context.PostAsync(reply);
                }
                else
                {
                    await context.PostAsync("No GeoCoordinates!");
                }
            }
            else
            {
                await context.PostAsync("No location extracted!");
            }

            context.Wait(Stores);
        }

    }
    [Serializable]
    public class FacebookLocationDialog : IDialog<Place>
    {
        public async Task StartAsync(IDialogContext context)
        {
            context.Wait(MessageReceivedAsync);
        }

        public virtual async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> argument)
        {
            var msg = await argument;
            if (msg.ChannelId == "facebook")
            {
                var reply = context.MakeMessage();
                reply.ChannelData = new FacebookMessage
                (
                    text: "Please share your location with me.",
                    quickReplies: new List<FacebookQuickReply>
                    {
                        // If content_type is location, title and payload are not used
                        // see https://developers.facebook.com/docs/messenger-platform/send-api-reference/quick-replies#fields
                        // for more information.
                        new FacebookQuickReply(
                            contentType: FacebookQuickReply.ContentTypes.Location,
                            title: default(string),
                            payload: default(string)
                        )
                    }
                );
                await context.PostAsync(reply);
                context.Wait(LocationReceivedAsync);
            }
            else
            {
                context.Done(default(Place));
            }
        }

        public virtual async Task LocationReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> argument)
        {
            var msg = await argument;
            var location = msg.Entities?.Where(t => t.Type == "Place").Select(t => t.GetAs<Place>()).FirstOrDefault();
            context.Done(location);
        }
    }

The “context.Wait(Stores);” in the ResumeAfter Task is throwing a “The type arguments for method IDialogStack.Wait cannot be inferred from the usage”.