-module(webls@robots).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([to_string/1]).
-export_type([robots_config/0, robot/0]).

-type robots_config() :: {robots_config, binary(), list(robot())}.

-type robot() :: {robot, binary(), list(binary()), list(binary())}.

-spec robot_to_string(robot()) -> binary().
robot_to_string(Robot) ->
    <<<<<<<<"User-agent: "/utf8, (erlang:element(2, Robot))/binary>>/binary,
                "\n"/utf8>>/binary,
            (begin
                _pipe = erlang:element(3, Robot),
                _pipe@1 = gleam@list:map(
                    _pipe,
                    fun(Route) -> <<"Allow: "/utf8, Route/binary>> end
                ),
                _pipe@2 = gleam@list:reduce(
                    _pipe@1,
                    fun(Acc, Line) ->
                        <<<<Acc/binary, "\n"/utf8>>/binary, Line/binary>>
                    end
                ),
                gleam@result:unwrap(_pipe@2, <<""/utf8>>)
            end)/binary>>/binary,
        (begin
            _pipe@3 = erlang:element(4, Robot),
            _pipe@4 = gleam@list:map(
                _pipe@3,
                fun(Route@1) -> <<"Disallow: "/utf8, Route@1/binary>> end
            ),
            _pipe@5 = gleam@list:reduce(
                _pipe@4,
                fun(Acc@1, Line@1) ->
                    <<<<Acc@1/binary, "\n"/utf8>>/binary, Line@1/binary>>
                end
            ),
            gleam@result:unwrap(_pipe@5, <<""/utf8>>)
        end)/binary>>.

-spec to_string(robots_config()) -> binary().
to_string(Config) ->
    <<<<<<"Sitemap: "/utf8, (erlang:element(2, Config))/binary>>/binary,
            "\n\n"/utf8>>/binary,
        (begin
            _pipe = erlang:element(3, Config),
            _pipe@2 = gleam@list:map(_pipe, fun(Robot) -> _pipe@1 = Robot,
                    robot_to_string(_pipe@1) end),
            _pipe@3 = gleam@list:reduce(
                _pipe@2,
                fun(Acc, Line) ->
                    <<<<Acc/binary, "\n\n"/utf8>>/binary, Line/binary>>
                end
            ),
            gleam@result:unwrap(_pipe@3, <<""/utf8>>)
        end)/binary>>.