open Lwt.Syntax
open Js_of_ocaml

(* https://stackoverflow.com/questions/34929382/what-are-the-differences-between-lwt-async-and-lwt-main-run-on-ocaml-node-js *)
let rec run t =
  let next_tick (_callback : unit -> unit) =
    Js.Unsafe.(fun_call
                 (js_expr "process.nextTick")
                 [| inject (Js.wrap_callback _callback) |])
  in Lwt.wakeup_paused ();
     match Lwt.poll t with
     | Some x -> x
     | None ->
        if Lwt.paused_count () > 0
        then next_tick (fun () -> run t)
        else ()

let () =
  run @@
    let* ws = Portal_ws.ws_endpoint "squarebowl.club" in
    let stream, push =
      Portal_ws.ws_stream ws in
    push (Some "malformed");
    let+ stanzas = stream
                   |> Lwt_stream.map
                        (fun stanza ->
                          match stanza with
                          | {|<close xmlns='urn:ietf:params:xml:ns:xmpp-framing'/>|} -> push None; stanza
                          | stanza -> stanza)
                   |> Lwt_stream.to_list
    in List.map (fun x -> " >>> " ^ x) stanzas |> String.concat "\n" |> print_endline