libero

-module(libero@ws_logger).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/libero/ws_logger.gleam").
-export([default_logger/0]).
-export_type([logger/0]).

-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.

?MODULEDOC(
    " Logger type used by generated WebSocket handlers.\n"
    "\n"
    " Consumers pass a Logger value into `ws.upgrade` so the\n"
    " generated handler can emit structured log messages without\n"
    " libero needing to know about any particular logging backend.\n"
).

-type logger() :: {logger,
        fun((binary()) -> nil),
        fun((binary()) -> nil),
        fun((binary()) -> nil)}.

-file("src/libero/ws_logger.gleam", 20).
?DOC(
    " Default logger that prints debug messages to stdout and\n"
    " warning/error messages to stderr. Suitable for examples and local\n"
    " development; replace with a real structured logger in production.\n"
).
-spec default_logger() -> logger().
default_logger() ->
    {logger,
        fun(Msg) -> gleam_stdlib:println(<<"[debug] "/utf8, Msg/binary>>) end,
        fun(Msg@1) ->
            gleam_stdlib:println_error(<<"[warning] "/utf8, Msg@1/binary>>)
        end,
        fun(Msg@2) ->
            gleam_stdlib:println_error(<<"[error] "/utf8, Msg@2/binary>>)
        end}.