-module(bliss@middleware).
-compile(no_auto_import).

-export([cors/2]).

-spec add_cors_headers(gleam@http@response:response(HAR), binary()) -> gleam@http@response:response(HAR).
add_cors_headers(Response, Origin) ->
    _pipe = Response,
    _pipe@1 = gleam@http@response:prepend_header(
        _pipe,
        <<"Access-Control-Allow-Origin"/utf8>>,
        Origin
    ),
    _pipe@2 = gleam@http@response:prepend_header(
        _pipe@1,
        <<"Access-Control-Allow-Methods"/utf8>>,
        <<"DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT"/utf8>>
    ),
    _pipe@3 = gleam@http@response:prepend_header(
        _pipe@2,
        <<"Access-Control-Allow-Headers"/utf8>>,
        <<"Content-Type"/utf8>>
    ),
    gleam@http@response:prepend_header(
        _pipe@3,
        <<"Access-Control-Allow-Credentials"/utf8>>,
        <<"true"/utf8>>
    ).

-spec cors(
    fun((gleam@http@request:request(bitstring()), HAV) -> {ok,
                                                           gleam@http@response:response(gleam@bit_builder:bit_builder())} |
        {error, HBB}),
    binary()
) -> fun((gleam@http@request:request(bitstring()), HAV) -> {ok,
                                                            gleam@http@response:response(gleam@bit_builder:bit_builder())} |
    {error, HBB}).
cors(Handler, Origin) ->
    fun(Req, Ctx) ->
        Resp@1 = case erlang:element(2, Req) of
            options ->
                Resp = begin
                    _pipe = gleam@http@response:new(202),
                    gleam@http@response:set_body(
                        _pipe,
                        gleam@bit_builder:from_string(<<""/utf8>>)
                    )
                end,
                {ok, Resp};

            _@1 ->
                Handler(Req, Ctx)
        end,
        _pipe@1 = Resp@1,
        gleam@result:map(
            _pipe@1,
            fun(_capture) -> add_cors_headers(_capture, Origin) end
        )
    end.