ewe

-module(ewe).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/ewe.gleam").
-export([ip_address_to_string/1, get_client_info/1, get_server_info/1, file/3, new/1, bind/2, bind_all/1, listening/2, listening_random/1, enable_ipv6/1, enable_tls/3, with_name/2, on_start/2, quiet/1, on_crash/2, idle_timeout/2, start/1, supervised/1, read_body/2, stream_body/1, continue/1, continue_with_selector/2, stop/0, stop_abnormal/1, upgrade_websocket/4, send_binary_frame/2, send_text_frame/2]).
-export_type([ip_address/0, socket_address/0, response_body/0, monitor_selector/0, file_error/0, builder/0, body_error/0, stream/0, next/2, websocket_message/1]).

-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(
    " <style>\n"
    "   .content > h4,\n"
    "   .content > ul {\n"
    "     display: none;\n"
    "   }\n"
    " </style>\n"
    " <script>\n"
    " // https://gitlab.com/arkandos/smol/-/blob/main/src/smol.gleam?ref_type=heads\n"
    " (callback => document.readyState !== 'loading' ? callback() : document.addEventListener('DOMContentLoaded', callback, { once: true }))(() => {\n"
    "   const list = document.querySelector('.sidebar > ul:last-of-type')\n"
    "   const sortedLists = document.createDocumentFragment()\n"
    "   const sortedMembers = document.createDocumentFragment()\n"
    "\n"
    "   for (const header of document.querySelectorAll('main > h4')) {\n"
    "     sortedLists.append((() => {\n"
    "       const node = document.createElement('h3')\n"
    "       node.append(header.textContent)\n"
    "       return node\n"
    "     })())\n"
    "     sortedMembers.append((() => {\n"
    "       const node = document.createElement('h2')\n"
    "       node.append(header.textContent)\n"
    "       return node\n"
    "     })())\n"
    "\n"
    "     const sortedList = document.createElement('ul')\n"
    "     sortedLists.append(sortedList)\n"
    "\n"
    "     for (const anchor of header.nextElementSibling.querySelectorAll('a')) {\n"
    "       const href = anchor.getAttribute('href')\n"
    "       const member = document.querySelector(`.member:has(h2 > a[href=\"${href}\"])`)\n"
    "       const sidebar = list.querySelector(`li:has(a[href=\"${href}\"])`)\n"
    "       sortedList.append(sidebar)\n"
    "       sortedMembers.append(member)\n"
    "     }\n"
    "   }\n"
    "\n"
    "   document.querySelector('.sidebar').insertBefore(sortedLists, list)\n"
    "   document.querySelector('.module-members:has(#module-values)').insertBefore(sortedMembers, document.querySelector('#module-values').nextSibling)\n"
    " })\n"
    " </script>\n"
    " #### IP Address\n"
    " - [ip_address_to_string](#ip_address_to_string)\n"
    " #### Information\n"
    " - [get_client_info](#get_client_info)\n"
    " - [get_server_info](#get_server_info)\n"
    " #### Builder\n"
    " - [new](#new)\n"
    " - [bind](#bind)\n"
    " - [bind_all](#bind_all)\n"
    " - [listening](#listening)\n"
    " - [listening_random](#listening_random)\n"
    " - [enable_ipv6](#enable_ipv6)\n"
    " - [enable_tls](#enable_tls)\n"
    " - [with_name](#with_name)\n"
    " - [quiet](#quiet)\n"
    " - [idle_timeout](#idle_timeout)\n"
    " - [on_start](#on_start)\n"
    " - [on_crash](#on_crash)\n"
    " #### Server\n"
    " - [start](#start)\n"
    " - [supervised](#supervised)\n"
    " #### Request\n"
    " - [read_body](#read_body)\n"
    " - [stream_body](#stream_body)\n"
    " #### Response\n"
    " - [file](#file)\n"
    " #### Websocket\n"
    " - [upgrade_websocket](#upgrade_websocket)\n"
    " - [send_binary_frame](#send_binary_frame)\n"
    " - [send_text_frame](#send_text_frame)\n"
    " - [continue](#continue)\n"
    " - [continue_with_selector](#continue_with_selector)\n"
    " - [stop](#stop)\n"
    " - [stop_abnormal](#stop_abnormal)\n"
).

-type ip_address() :: {ip_v4, integer(), integer(), integer(), integer()} |
    {ip_v6,
        integer(),
        integer(),
        integer(),
        integer(),
        integer(),
        integer(),
        integer(),
        integer()}.

-type socket_address() :: {socket_address, ip_address(), integer()}.

-type response_body() :: {text_data, binary()} |
    {bytes_data, gleam@bytes_tree:bytes_tree()} |
    {bits_data, bitstring()} |
    {string_tree_data, gleam@string_tree:string_tree()} |
    empty |
    {chunked_data, gleam@yielder:yielder(bitstring())} |
    {file, ewe@internal@file:io_device(), integer(), integer()} |
    {websocket_connection, monitor_selector()}.

-type monitor_selector() :: {monitor_selector,
        gleam@erlang@process:selector(gleam@erlang@process:down())}.

-type file_error() :: no_entry |
    no_access |
    is_directory |
    {unknown_file_error, gleam@dynamic:dynamic_()}.

-opaque builder() :: {builder,
        fun((gleam@http@request:request(ewe@internal@http:connection())) -> gleam@http@response:response(response_body())),
        integer(),
        binary(),
        boolean(),
        gleam@option:option({binary(), binary()}),
        fun((gleam@http:scheme(), socket_address()) -> nil),
        gleam@http@response:response(response_body()),
        gleam@erlang@process:name(glisten@internal@listener:message()),
        integer()}.

-type body_error() :: body_too_large | invalid_body.

-type stream() :: {consumed,
        bitstring(),
        fun((integer()) -> {ok, stream()} | {error, body_error()})} |
    done.

-opaque next(MUJ, MUK) :: {continue,
        MUJ,
        gleam@option:option(gleam@erlang@process:selector(MUK))} |
    normal_stop |
    {abnormal_stop, binary()}.

-type websocket_message(MUL) :: {text, binary()} |
    {binary, bitstring()} |
    {user, MUL}.

-file("src/ewe.gleam", 140).
-spec glisten_to_ewe_ip(glisten:ip_address()) -> ip_address().
glisten_to_ewe_ip(Ip) ->
    case Ip of
        {ip_v4, N1, N2, N3, N4} ->
            {ip_v4, N1, N2, N3, N4};

        {ip_v6, N1@1, N2@1, N3@1, N4@1, N5, N6, N7, N8} ->
            {ip_v6, N1@1, N2@1, N3@1, N4@1, N5, N6, N7, N8}
    end.

-file("src/ewe.gleam", 148).
-spec glisten_options_to_ewe_ip(glisten@socket@options:ip_address()) -> ip_address().
glisten_options_to_ewe_ip(Ip) ->
    case Ip of
        {ip_v4, N1, N2, N3, N4} ->
            {ip_v4, N1, N2, N3, N4};

        {ip_v6, N1@1, N2@1, N3@1, N4@1, N5, N6, N7, N8} ->
            {ip_v6, N1@1, N2@1, N3@1, N4@1, N5, N6, N7, N8}
    end.

-file("src/ewe.gleam", 156).
-spec ewe_to_glisten_ip(ip_address()) -> glisten:ip_address().
ewe_to_glisten_ip(Ip) ->
    case Ip of
        {ip_v4, N1, N2, N3, N4} ->
            {ip_v4, N1, N2, N3, N4};

        {ip_v6, N1@1, N2@1, N3@1, N4@1, N5, N6, N7, N8} ->
            {ip_v6, N1@1, N2@1, N3@1, N4@1, N5, N6, N7, N8}
    end.

-file("src/ewe.gleam", 135).
?DOC(" Converts an `IpAddress` to a `String`.\n").
-spec ip_address_to_string(ip_address()) -> binary().
ip_address_to_string(Address) ->
    _pipe = ewe_to_glisten_ip(Address),
    glisten:ip_address_to_string(_pipe).

-file("src/ewe.gleam", 178).
?DOC(
    " Attempts to get the client's socket address using request's\n"
    " connection.\n"
).
-spec get_client_info(ewe@internal@http:connection()) -> {ok, socket_address()} |
    {error, nil}.
get_client_info(Connection) ->
    _pipe = glisten@transport:peername(
        erlang:element(2, Connection),
        erlang:element(3, Connection)
    ),
    gleam@result:map(
        _pipe,
        fun(Server_info) ->
            {socket_address,
                glisten_options_to_ewe_ip(erlang:element(1, Server_info)),
                erlang:element(2, Server_info)}
        end
    ).

-file("src/ewe.gleam", 190).
?DOC(
    " Retrieves server's socket address. Requires the same name as the one used in\n"
    " `ewe.with_name` and server to be started.\n"
).
-spec get_server_info(
    gleam@erlang@process:name(glisten@internal@listener:message())
) -> socket_address().
get_server_info(Name) ->
    Server_info = glisten:get_server_info(Name, 10000),
    Ip_address = glisten_to_ewe_ip(erlang:element(3, Server_info)),
    {socket_address, Ip_address, erlang:element(2, Server_info)}.

-file("src/ewe.gleam", 259).
-spec transform_response_body(gleam@http@response:response(response_body())) -> gleam@http@response:response(ewe@internal@http:response_body()).
transform_response_body(Resp) ->
    gleam@http@response:set_body(Resp, case erlang:element(4, Resp) of
            {text_data, Text} ->
                {text_data, Text};

            {bytes_data, Bytes} ->
                {bytes_data, Bytes};

            {bits_data, Bits} ->
                {bits_data, Bits};

            {string_tree_data, String_tree} ->
                {string_tree_data, String_tree};

            {chunked_data, Yielder} ->
                {chunked_data, Yielder};

            {file, Descriptor, Offset, Size} ->
                {file, Descriptor, Offset, Size};

            {websocket_connection, {monitor_selector, Selector}} ->
                {websocket_connection, Selector};

            empty ->
                empty
        end).

-file("src/ewe.gleam", 294).
-spec internal_to_file_error(ewe@internal@file:file_error()) -> file_error().
internal_to_file_error(Error) ->
    case Error of
        enoent ->
            no_entry;

        eacces ->
            no_access;

        eisdir ->
            is_directory;

        {eunknown, Error@1} ->
            {unknown_file_error, Error@1}
    end.

-file("src/ewe.gleam", 305).
?DOC(" Sets response body from file, sets `content-length` header.\n").
-spec file(
    binary(),
    gleam@option:option(integer()),
    gleam@option:option(integer())
) -> {ok, response_body()} | {error, file_error()}.
file(Path, Offset, Limit) ->
    case mist_ffi:open_file(Path) of
        {ok, File} ->
            {ok,
                {file,
                    erlang:element(2, File),
                    gleam@option:unwrap(Offset, 0),
                    gleam@option:unwrap(Limit, erlang:element(3, File))}};

        {error, Error} ->
            {error, internal_to_file_error(Error)}
    end.

-file("src/ewe.gleam", 372).
?DOC(
    " Creates new server builder with handler provided.\n"
    " \n"
    " Default configuration:\n"
    " - port: `8080`\n"
    " - interface: `127.0.0.1`\n"
    " - No ipv6 support\n"
    " - No TLS support\n"
    " - Default listener name for server information retrieval\n"
    " - on_start: prints `Listening on <scheme>://<ip_address>:<port>`\n"
    " - on_crash: empty 500 response\n"
    " - idle_timeout: connection is closed after 10_000ms of inactivity\n"
).
-spec new(
    fun((gleam@http@request:request(ewe@internal@http:connection())) -> gleam@http@response:response(response_body()))
) -> builder().
new(Handler) ->
    {builder,
        Handler,
        8080,
        <<"127.0.0.1"/utf8>>,
        false,
        none,
        fun(Scheme, Server) ->
            Address = case erlang:element(2, Server) of
                {ip_v6, _, _, _, _, _, _, _, _} ->
                    <<<<"["/utf8,
                            (ip_address_to_string(erlang:element(2, Server)))/binary>>/binary,
                        "]"/utf8>>;

                {ip_v4, _, _, _, _} ->
                    ip_address_to_string(erlang:element(2, Server))
            end,
            Url = <<<<<<<<(gleam@http:scheme_to_string(Scheme))/binary,
                            "://"/utf8>>/binary,
                        Address/binary>>/binary,
                    ":"/utf8>>/binary,
                (erlang:integer_to_binary(erlang:element(3, Server)))/binary>>,
            gleam_stdlib:println(<<"Listening on "/utf8, Url/binary>>)
        end,
        begin
            _pipe = gleam@http@response:new(500),
            gleam@http@response:set_body(_pipe, empty)
        end,
        gleam_erlang_ffi:new_name(<<"glisten_listener"/utf8>>),
        10000}.

-file("src/ewe.gleam", 403).
?DOC(
    " Binds server to a specific interface. Crashes program if the interface is \n"
    " invalid.\n"
).
-spec bind(builder(), binary()) -> builder().
bind(Builder, Interface) ->
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        Interface,
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        erlang:element(7, Builder),
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 409).
?DOC(" Binds server to all interfaces.\n").
-spec bind_all(builder()) -> builder().
bind_all(Builder) ->
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        <<"0.0.0.0"/utf8>>,
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        erlang:element(7, Builder),
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 415).
?DOC(" Sets listening port for server.\n").
-spec listening(builder(), integer()) -> builder().
listening(Builder, Port) ->
    {builder,
        erlang:element(2, Builder),
        Port,
        erlang:element(4, Builder),
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        erlang:element(7, Builder),
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 421).
?DOC(" Sets listening port for server to a random port. Useful for testing.\n").
-spec listening_random(builder()) -> builder().
listening_random(Builder) ->
    {builder,
        erlang:element(2, Builder),
        0,
        erlang:element(4, Builder),
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        erlang:element(7, Builder),
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 427).
?DOC(" Enables IPv6 support.\n").
-spec enable_ipv6(builder()) -> builder().
enable_ipv6(Builder) ->
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        erlang:element(4, Builder),
        true,
        erlang:element(6, Builder),
        erlang:element(7, Builder),
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 433).
?DOC(" Enables TLS support, requires certificate and key file.\n").
-spec enable_tls(builder(), binary(), binary()) -> builder().
enable_tls(Builder, Certificate_file, Key_file) ->
    Cert = case mist_ffi:open_file(Certificate_file) of
        {ok, _} ->
            Certificate_file;

        {error, _} ->
            erlang:error(#{gleam_error => panic,
                    message => <<"Failed to find cert file"/utf8>>,
                    file => <<?FILEPATH/utf8>>,
                    module => <<"ewe"/utf8>>,
                    function => <<"enable_tls"/utf8>>,
                    line => 440})
    end,
    Key = case mist_ffi:open_file(Key_file) of
        {ok, _} ->
            Key_file;

        {error, _} ->
            erlang:error(#{gleam_error => panic,
                    message => <<"Failed to find key file"/utf8>>,
                    file => <<?FILEPATH/utf8>>,
                    module => <<"ewe"/utf8>>,
                    function => <<"enable_tls"/utf8>>,
                    line => 445})
    end,
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        erlang:element(4, Builder),
        erlang:element(5, Builder),
        {some, {Cert, Key}},
        erlang:element(7, Builder),
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 454).
?DOC(
    " Sets a custom process name for server information retrieval, allowing to\n"
    " use `ewe.get_server_info` after the server starts.\n"
).
-spec with_name(
    builder(),
    gleam@erlang@process:name(glisten@internal@listener:message())
) -> builder().
with_name(Builder, Name) ->
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        erlang:element(4, Builder),
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        erlang:element(7, Builder),
        erlang:element(8, Builder),
        Name,
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 463).
?DOC(" Sets a custom handler that will be called after server starts.\n").
-spec on_start(builder(), fun((gleam@http:scheme(), socket_address()) -> nil)) -> builder().
on_start(Builder, On_start) ->
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        erlang:element(4, Builder),
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        On_start,
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 472).
?DOC(" Sets an empty `on_start` function.\n").
-spec quiet(builder()) -> builder().
quiet(Builder) ->
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        erlang:element(4, Builder),
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        fun(_, _) -> nil end,
        erlang:element(8, Builder),
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 478).
?DOC(" Sets a custom response that will be sent when server crashes.\n").
-spec on_crash(builder(), gleam@http@response:response(response_body())) -> builder().
on_crash(Builder, On_crash) ->
    {builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        erlang:element(4, Builder),
        erlang:element(5, Builder),
        erlang:element(6, Builder),
        erlang:element(7, Builder),
        On_crash,
        erlang:element(9, Builder),
        erlang:element(10, Builder)}.

-file("src/ewe.gleam", 485).
?DOC(
    " Sets a custom idle timeout in milliseconds for connections. If\n"
    " provided timeout is less than 0, 10_000ms will be used instead.\n"
).
-spec idle_timeout(builder(), integer()) -> builder().
idle_timeout(Builder, Idle_timeout) ->
    case Idle_timeout of
        Idle_timeout@1 when Idle_timeout@1 >= 0 ->
            {builder,
                erlang:element(2, Builder),
                erlang:element(3, Builder),
                erlang:element(4, Builder),
                erlang:element(5, Builder),
                erlang:element(6, Builder),
                erlang:element(7, Builder),
                erlang:element(8, Builder),
                erlang:element(9, Builder),
                Idle_timeout@1};

        _ ->
            {builder,
                erlang:element(2, Builder),
                erlang:element(3, Builder),
                erlang:element(4, Builder),
                erlang:element(5, Builder),
                erlang:element(6, Builder),
                erlang:element(7, Builder),
                erlang:element(8, Builder),
                erlang:element(9, Builder),
                10000}
    end.

-file("src/ewe.gleam", 498).
?DOC(" Starts the server with the provided configuration.\n").
-spec start(builder()) -> {ok,
        gleam@otp@actor:started(gleam@otp@static_supervisor:supervisor())} |
    {error, gleam@otp@actor:start_error()}.
start(Builder) ->
    Handler = fun(Req) ->
        transform_response_body((erlang:element(2, Builder))(Req))
    end,
    On_crash = transform_response_body(erlang:element(8, Builder)),
    Glisten_supervisor = begin
        _pipe = glisten:new(
            fun ewe@internal@handler:init/1,
            ewe@internal@handler:loop(
                Handler,
                On_crash,
                erlang:element(10, Builder)
            )
        ),
        _pipe@1 = glisten:bind(_pipe, erlang:element(4, Builder)),
        _pipe@2 = (fun(Glisten_builder) -> case erlang:element(5, Builder) of
                true ->
                    glisten:with_ipv6(Glisten_builder);

                false ->
                    Glisten_builder
            end end)(_pipe@1),
        _pipe@3 = (fun(Glisten_builder@1) -> case erlang:element(6, Builder) of
                {some, {Cert, Key}} ->
                    glisten:with_tls(Glisten_builder@1, Cert, Key);

                none ->
                    Glisten_builder@1
            end end)(_pipe@2),
        _pipe@4 = glisten:start_with_listener_name(
            _pipe@3,
            erlang:element(3, Builder),
            erlang:element(9, Builder)
        ),
        gleam@result:map(
            _pipe@4,
            fun(Started) ->
                Scheme = case erlang:element(6, Builder) of
                    {some, {_, _}} ->
                        https;

                    none ->
                        http
                end,
                Server_info = glisten:get_server_info(
                    erlang:element(9, Builder),
                    10000
                ),
                Ip_address = glisten_to_ewe_ip(erlang:element(3, Server_info)),
                Server = {socket_address,
                    Ip_address,
                    erlang:element(2, Server_info)},
                (erlang:element(7, Builder))(Scheme, Server),
                Started
            end
        )
    end,
    Glisten_child = gleam@otp@supervision:supervisor(
        fun() -> Glisten_supervisor end
    ),
    _pipe@5 = gleam@otp@static_supervisor:new(one_for_all),
    _pipe@6 = gleam@otp@static_supervisor:add(_pipe@5, Glisten_child),
    gleam@otp@static_supervisor:start(_pipe@6).

-file("src/ewe.gleam", 550).
?DOC(
    " Creates a supervisor with the provided configuration that is a child of a\n"
    " supervision tree.\n"
).
-spec supervised(builder()) -> gleam@otp@supervision:child_specification(gleam@otp@static_supervisor:supervisor()).
supervised(Builder) ->
    gleam@otp@supervision:supervisor(fun() -> start(Builder) end).

-file("src/ewe.gleam", 582).
?DOC(
    " Reads body from the request. If request body is malformed, `InvalidBody`\n"
    " error is returned. On success, returns a request with body converted to\n"
    " `BitArray`.\n"
    " \n"
    " - When `transfer-encoding` header set as `chunked`, `BodyTooLarge` error is \n"
    " returned if accumulated body is larger than `size_limit`.\n"
    " - Ensures that `content-length` is in `size_limit` scope.\n"
).
-spec read_body(
    gleam@http@request:request(ewe@internal@http:connection()),
    integer()
) -> {ok, gleam@http@request:request(bitstring())} | {error, body_error()}.
read_body(Req, Bytes_limit) ->
    case ewe@internal@http:read_body(Req, Bytes_limit) of
        {ok, Req@1} ->
            {ok, Req@1};

        {error, body_too_large} ->
            {error, body_too_large};

        {error, _} ->
            {error, invalid_body}
    end.

-file("src/ewe.gleam", 620).
-spec consumer_adapter(
    fun((integer()) -> {ok, ewe@internal@http:stream()} |
        {error, ewe@internal@http:parse_error()})
) -> fun((integer()) -> {ok, stream()} | {error, body_error()}).
consumer_adapter(Internal_consumer) ->
    fun(Size) -> case Internal_consumer(Size) of
            {ok, done} ->
                {ok, done};

            {ok, {consumed, Data, Next}} ->
                {ok, {consumed, Data, consumer_adapter(Next)}};

            {error, _} ->
                {error, invalid_body}
        end end.

-file("src/ewe.gleam", 613).
?DOC(
    " Returns the consumer function that reads `N` amount of bytes from the\n"
    " request body stream.\n"
).
-spec stream_body(gleam@http@request:request(ewe@internal@http:connection())) -> {ok,
        fun((integer()) -> {ok, stream()} | {error, body_error()})} |
    {error, body_error()}.
stream_body(Req) ->
    case ewe@internal@http:stream_body(Req) of
        {ok, Consumer} ->
            {ok, consumer_adapter(Consumer)};

        {error, _} ->
            {error, invalid_body}
    end.

-file("src/ewe.gleam", 659).
?DOC(" Instructs WebSocket connection to continue processing.\n").
-spec continue(MVK) -> next(MVK, any()).
continue(User_state) ->
    {continue, User_state, none}.

-file("src/ewe.gleam", 666).
?DOC(
    " Instructs WebSocket connection to continue processing, including selector\n"
    " for custom messages.\n"
).
-spec continue_with_selector(MVO, gleam@erlang@process:selector(MVP)) -> next(MVO, MVP).
continue_with_selector(User_state, Selector) ->
    {continue, User_state, {some, Selector}}.

-file("src/ewe.gleam", 675).
?DOC(" Instructs WebSocket connection to stop.\n").
-spec stop() -> next(any(), any()).
stop() ->
    normal_stop.

-file("src/ewe.gleam", 681).
?DOC(" Instructs WebSocket connection to stop with abnormal reason.\n").
-spec stop_abnormal(binary()) -> next(any(), any()).
stop_abnormal(Reason) ->
    {abnormal_stop, Reason}.

-file("src/ewe.gleam", 685).
-spec to_internal_next(next(MWB, MWC)) -> ewe@internal@websocket:websocket_next(MWB, MWC).
to_internal_next(Next) ->
    case Next of
        {continue, User_state, Selector} ->
            {continue, User_state, Selector};

        normal_stop ->
            normal_stop;

        {abnormal_stop, Reason} ->
            {abnormal_stop, Reason}
    end.

-file("src/ewe.gleam", 709).
-spec transform_websocket_message(ewe@internal@websocket:websocket_message(MWH)) -> {ok,
        websocket_message(MWH)} |
    {error, nil}.
transform_websocket_message(Message) ->
    case Message of
        {websocket_frame, {data, Frame}} ->
            ewe@internal@gramps@websocket:match_data_frame(
                Frame,
                fun(Payload, _) -> _pipe = gleam@bit_array:to_string(Payload),
                    gleam@result:map(_pipe, fun(Field@0) -> {text, Field@0} end) end,
                fun(Payload@1, _) -> {ok, {binary, Payload@1}} end
            );

        {user_message, User_message} ->
            {ok, {user, User_message}};

        _ ->
            {error, nil}
    end.

-file("src/ewe.gleam", 741).
?DOC(
    " Upgrade request to a WebSocket connection. If the initial request is not\n"
    " valid for WebSocket upgrade, 400 response is sent.\n"
    " \n"
    " `on_init` function is called once process that handles WebSocket connection\n"
    " is initialized. It must return a tuple with initial state and selector for\n"
    " custom messages. If there is no custom messages, user can pass the same \n"
    " selector from the argument\n"
    " \n"
    " `handler` function is called for every WebSocket message received. It must\n"
    " return instruction on how WebSocket connection should proceed.\n"
    " \n"
    " `on_close` function is called when WebSocket process is going to be stopped.\n"
).
-spec upgrade_websocket(
    gleam@http@request:request(ewe@internal@http:connection()),
    fun((ewe@internal@websocket:websocket_connection(), gleam@erlang@process:selector(MWM)) -> {MWO,
        gleam@erlang@process:selector(MWM)}),
    fun((ewe@internal@websocket:websocket_connection(), MWO, websocket_message(MWM)) -> next(MWO, MWM)),
    fun((ewe@internal@websocket:websocket_connection(), MWO) -> nil)
) -> gleam@http@response:response(response_body()).
upgrade_websocket(Req, On_init, Handler, On_close) ->
    Handler@1 = fun(Conn, State, Msg) ->
        _pipe = transform_websocket_message(Msg),
        _pipe@1 = gleam@result:map(
            _pipe,
            fun(_capture) -> Handler(Conn, State, _capture) end
        ),
        _pipe@2 = gleam@result:unwrap(_pipe@1, continue(State)),
        to_internal_next(_pipe@2)
    end,
    Transport = erlang:element(2, erlang:element(4, Req)),
    Socket = erlang:element(3, erlang:element(4, Req)),
    Resp = begin
        gleam@result:'try'(
            begin
                _pipe@3 = ewe@internal@http:upgrade_websocket(
                    Req,
                    Transport,
                    Socket
                ),
                gleam@result:replace_error(
                    _pipe@3,
                    begin
                        _pipe@4 = gleam@http@response:new(400),
                        gleam@http@response:set_body(_pipe@4, empty)
                    end
                )
            end,
            fun(_use0) ->
                {Extensions, Permessage_deflate} = _use0,
                gleam@result:'try'(
                    begin
                        _pipe@5 = ewe@internal@websocket:start(
                            Transport,
                            Socket,
                            On_init,
                            Handler@1,
                            On_close,
                            Extensions,
                            Permessage_deflate
                        ),
                        gleam@result:replace_error(
                            _pipe@5,
                            begin
                                _pipe@6 = gleam@http@response:new(500),
                                gleam@http@response:set_body(_pipe@6, empty)
                            end
                        )
                    end,
                    fun(Selector) -> _pipe@7 = gleam@http@response:new(500),
                        _pipe@8 = gleam@http@response:set_body(
                            _pipe@7,
                            {websocket_connection, {monitor_selector, Selector}}
                        ),
                        {ok, _pipe@8} end
                )
            end
        )
    end,
    gleam@result:unwrap_both(Resp).

-file("src/ewe.gleam", 792).
?DOC(" Sends a binary frame to the websocket client.\n").
-spec send_binary_frame(
    ewe@internal@websocket:websocket_connection(),
    bitstring()
) -> {ok, nil} | {error, glisten@socket:socket_reason()}.
send_binary_frame(Conn, Bits) ->
    ewe@internal@websocket:send_frame(
        fun ewe@internal@gramps@websocket:encode_binary_frame/3,
        erlang:element(2, Conn),
        erlang:element(3, Conn),
        erlang:element(4, Conn),
        Bits
    ).

-file("src/ewe.gleam", 807).
?DOC(" Sends a text frame to the websocket client.\n").
-spec send_text_frame(ewe@internal@websocket:websocket_connection(), binary()) -> {ok,
        nil} |
    {error, glisten@socket:socket_reason()}.
send_text_frame(Conn, Text) ->
    ewe@internal@websocket:send_frame(
        fun ewe@internal@gramps@websocket:encode_text_frame/3,
        erlang:element(2, Conn),
        erlang:element(3, Conn),
        erlang:element(4, Conn),
        Text
    ).