open Pusk.Net
open Pusk.Drivers
open Pusk.Utils
open Twitter

let start driver =
  let name_driver = prepare driver in
  let data_driver = run_process name_driver [] in
  let session_id = get_session ~headless:false () in
  data_driver, session_id
;;

let stop (driver_process, session_id) =
  if not (close_session session_id) then print_endline "Can't close the session";
  stop_process driver_process
;;

let rec check ctx =
  (* Loop *)
  let recheck timeout =
    Unix.sleep timeout;
    refresh_page ctx.session_id;
    Unix.sleep 4;
    check ctx
  in
  (* Time to wait until next check *)
  let timeout =
    match find_latest_tweet ctx with
    | Some tweet_date ->
      (* TODO: Get date of tweet and return time to wait before tweeting
       * (0 if we need to tweet) *)
      print_endline (fmt "latest tweet date: %d" tweet_date);
      30000000000000000
    | None -> 0
  in
  if 0 = timeout
  then (
    print_endline "TODO: We are tweeting here. :)";
    (* Wait the maximum time since we just tweeted *)
    recheck 2505600 (* 29 days *))
  else (* Wait the amount of time calculated from the post *)
    recheck timeout
;;

let main ctx =
  (* Load credentials *)
  load_dotenv;
  let username, password =
    match Sys.getenv_opt "TWITTER_USERNAME", Sys.getenv_opt "TWITTER_PASSWORD" with
    | Some u, Some p -> u, p
    | None, None -> raise (Any "Username and password not set")
    | None, Some _ -> raise (Any "Username not set")
    | Some _, None -> raise (Any "Password not set")
  in
  login_twitter ctx username password (Sys.getenv_opt "TWITTER_TOTP");
  go_to_profile ctx;
  (* Start check routine *)
  check ctx
;;

let handler data (signal : int) =
  stop_process data;
  exit
    (match signal with
    | v when v = Sys.sigint -> 130
    | _ -> 1)
;;

let () =
  let data = start (Gecko "0.33.0") in
  Sys.set_signal Sys.sigint (Sys.Signal_handle (handler (fst data)));
  let ctx = { session_id = snd data } in
  (try main ctx with
  | Any why -> print_endline why);
  stop data
;;