-module(entwine_ffi).
-export([open_browser/1, prompt/1, now_rfc3339/0]).

prompt(Message) ->
    case io:get_line(Message) of
        eof -> <<>>;
        {error, _} -> <<>>;
        Line -> unicode:characters_to_binary(string:trim(Line))
    end.


open_browser(Url) ->
    Command = case os:type() of
        {unix, darwin} -> "open";
        _ -> "xdg-open"
    end,
    case os:find_executable(Command) of
        false -> nil;
        Executable ->
            _ = open_port(
                {spawn_executable, Executable},
                [binary, {args, [Url]}]
            ),
            nil
    end.

now_rfc3339() ->
    unicode:characters_to_binary(
        calendar:system_time_to_rfc3339(
            erlang:system_time(millisecond),
            [{unit, millisecond}, {offset, 0}]
        )
    ).