-module(acumen@fetch_order).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/acumen/fetch_order.gleam").
-export([build/3, response/2]).

-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(
    " Fetch an existing ACME order.\n"
    "\n"
    " Use this to check the status of an order after creating it or to poll\n"
    " for status changes during certificate issuance.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " import acumen\n"
    " import acumen/fetch_order\n"
    " import acumen/order.{type Order}\n"
    "\n"
    " let assert Ok(#(resp, ctx)) = acumen.execute(\n"
    "   ctx,\n"
    "   build: fetch_order.build(existing_order.url, _, registered_key),\n"
    "   send: httpc.send,\n"
    " )\n"
    "\n"
    " let assert Ok(updated_order) = fetch_order.response(resp, existing_order.url)\n"
    " ```\n"
).

-file("src/acumen/fetch_order.gleam", 32).
?DOC(
    " Builds a signed POST-as-GET request to fetch an existing order.\n"
    "\n"
    " Used to poll order status during the authorization and finalization flow.\n"
).
-spec build(acumen@url:url(), acumen:context(), acumen:registered_key()) -> {ok,
        gleam@http@request:request(binary())} |
    {error, acumen:acme_error()}.
build(Url, Context, Key) ->
    acumen:build_fetch(Url, Context, Key).

-file("src/acumen/fetch_order.gleam", 43).
?DOC(
    " Parses the order fetch response.\n"
    "\n"
    " Pass the order URL since the response doesn't include a Location header.\n"
).
-spec response(gleam@http@response:response(binary()), acumen@url:url()) -> {ok,
        acumen@order:order()} |
    {error, acumen:acme_error()}.
response(Resp, Url) ->
    case erlang:element(2, Resp) of
        200 ->
            acumen@order:parse_order_response(Resp, Url);

        _ ->
            {error,
                {invalid_response,
                    acumen@internal@utils:unexpected_status_message(
                        erlang:element(2, Resp)
                    )}}
    end.