telega

-module(telega@api).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([set_webhook/1, get_webhook_info/1, delete_webhook/1, delete_webhook_and_drop_updates/1, log_out/1, close/1, reply/2, set_my_commands/3, delete_my_commands/2, get_my_commands/2, send_dice/2, get_me/1]).
-export_type([telegram_api_request/0, api_response/1]).

-type telegram_api_request() :: {telegram_api_post_request,
        binary(),
        binary(),
        gleam@option:option(list({binary(), binary()}))} |
    {telegram_api_get_request,
        binary(),
        gleam@option:option(list({binary(), binary()}))}.

-type api_response(PHL) :: {api_response, boolean(), PHL}.

-spec build_url(telega@bot:bot(), binary()) -> binary().
build_url(Bot, Path) ->
    <<<<<<(telega@bot:get_tg_api_url(Bot))/binary,
                (telega@bot:get_token(Bot))/binary>>/binary,
            "/"/utf8>>/binary,
        Path/binary>>.

-spec new_post_request(
    telega@bot:bot(),
    binary(),
    binary(),
    gleam@option:option(list({binary(), binary()}))
) -> telegram_api_request().
new_post_request(Bot, Path, Body, Query) ->
    {telegram_api_post_request, build_url(Bot, Path), Body, Query}.

-spec new_get_request(
    telega@bot:bot(),
    binary(),
    gleam@option:option(list({binary(), binary()}))
) -> telegram_api_request().
new_get_request(Bot, Path, Query) ->
    {telegram_api_get_request, build_url(Bot, Path), Query}.

-spec set_query(
    gleam@http@request:request(binary()),
    gleam@option:option(list({binary(), binary()}))
) -> gleam@http@request:request(binary()).
set_query(Api_request, Query) ->
    case Query of
        none ->
            Api_request;

        {some, Query@1} ->
            gleam@http@request:set_query(Api_request, Query@1)
    end.

-spec api_to_request(telegram_api_request()) -> {ok,
        gleam@http@request:request(binary())} |
    {error, binary()}.
api_to_request(Api_request) ->
    _pipe@6 = case Api_request of
        {telegram_api_get_request, Url, Query} ->
            _pipe = gleam@http@request:to(Url),
            _pipe@1 = gleam@result:map(
                _pipe,
                fun(_capture) ->
                    gleam@http@request:set_method(_capture, get)
                end
            ),
            gleam@result:map(
                _pipe@1,
                fun(_capture@1) -> set_query(_capture@1, Query) end
            );

        {telegram_api_post_request, Url@1, Body, Query@1} ->
            _pipe@2 = gleam@http@request:to(Url@1),
            _pipe@3 = gleam@result:map(
                _pipe@2,
                fun(_capture@2) ->
                    gleam@http@request:set_body(_capture@2, Body)
                end
            ),
            _pipe@4 = gleam@result:map(
                _pipe@3,
                fun(_capture@3) ->
                    gleam@http@request:set_method(_capture@3, post)
                end
            ),
            _pipe@5 = gleam@result:map(
                _pipe@4,
                fun(_capture@4) ->
                    gleam@http@request:set_header(
                        _capture@4,
                        <<"Content-Type"/utf8>>,
                        <<"application/json"/utf8>>
                    )
                end
            ),
            gleam@result:map(
                _pipe@5,
                fun(_capture@5) -> set_query(_capture@5, Query@1) end
            )
    end,
    gleam@result:map_error(
        _pipe@6,
        fun(_) -> <<"Failed to convert API request to HTTP request"/utf8>> end
    ).

-spec response_decoder(
    fun((gleam@dynamic:dynamic_()) -> {ok, PKF} |
        {error, list(gleam@dynamic:decode_error())})
) -> fun((gleam@dynamic:dynamic_()) -> {ok, api_response(PKF)} |
    {error, list(gleam@dynamic:decode_error())}).
response_decoder(Result_decoder) ->
    gleam@dynamic:decode2(
        fun(Field@0, Field@1) -> {api_response, Field@0, Field@1} end,
        gleam@dynamic:field(<<"ok"/utf8>>, fun gleam@dynamic:bool/1),
        gleam@dynamic:field(<<"result"/utf8>>, Result_decoder)
    ).

-spec map_resonse(
    {ok, gleam@http@response:response(binary())} | {error, binary()},
    fun((gleam@dynamic:dynamic_()) -> {ok, PJZ} |
        {error, list(gleam@dynamic:decode_error())})
) -> {ok, PJZ} | {error, binary()}.
map_resonse(Response, Result_decoder) ->
    _pipe = Response,
    _pipe@3 = gleam@result:map(
        _pipe,
        fun(Response@1) ->
            {response, _, _, Body} = Response@1,
            Decode = response_decoder(Result_decoder),
            _pipe@1 = gleam@json:decode(Body, Decode),
            _pipe@2 = gleam@result:map_error(
                _pipe@1,
                fun(_) ->
                    <<"Failed to decode response: "/utf8, Body/binary>>
                end
            ),
            gleam@result:map(
                _pipe@2,
                fun(Response@2) -> erlang:element(3, Response@2) end
            )
        end
    ),
    gleam@result:flatten(_pipe@3).

-spec send_with_retry(gleam@http@request:request(binary()), integer()) -> {ok,
        gleam@http@response:response(binary())} |
    {error, gleam@dynamic:dynamic_()}.
send_with_retry(Api_request, Retries) ->
    Response = gleam@httpc:send(Api_request),
    case Retries of
        0 ->
            Response;

        _ ->
            case Response of
                {ok, Response@1} ->
                    case erlang:element(2, Response@1) of
                        429 ->
                            telega@log:warn(
                                <<"Telegram API throttling, HTTP 429 'Too Many Requests'"/utf8>>
                            ),
                            gleam_erlang_ffi:sleep(1000),
                            send_with_retry(Api_request, Retries - 1);

                        _ ->
                            {ok, Response@1}
                    end;

                {error, _} ->
                    gleam_erlang_ffi:sleep(1000),
                    send_with_retry(Api_request, Retries - 1)
            end
    end.

-spec fetch(telegram_api_request(), telega@bot:bot()) -> {ok,
        gleam@http@response:response(binary())} |
    {error, binary()}.
fetch(Api_request, Bot) ->
    gleam@result:'try'(
        api_to_request(Api_request),
        fun(Api_request@1) ->
            Retry_count = telega@bot:get_max_retry_attempts(Bot),
            _pipe = send_with_retry(Api_request@1, Retry_count),
            gleam@result:map_error(
                _pipe,
                fun(Error) ->
                    telega@log:info(
                        <<"Api request failed with error:"/utf8,
                            (gleam@string:inspect(Error))/binary>>
                    ),
                    _pipe@1 = gleam@dynamic:string(Error),
                    gleam@result:unwrap(
                        _pipe@1,
                        <<"Failed to send request"/utf8>>
                    )
                end
            )
        end
    ).

-spec set_webhook(telega@bot:bot()) -> {ok, boolean()} | {error, binary()}.
set_webhook(Bot) ->
    Webhook_url = <<<<(telega@bot:get_server_url(Bot))/binary, "/"/utf8>>/binary,
        (telega@bot:get_webhook_path(Bot))/binary>>,
    Query = [{<<"url"/utf8>>, Webhook_url},
        {<<"secret_token"/utf8>>, telega@bot:get_secret_token(Bot)}],
    _pipe = new_get_request(Bot, <<"setWebhook"/utf8>>, {some, Query}),
    _pipe@1 = fetch(_pipe, Bot),
    map_resonse(_pipe@1, fun gleam@dynamic:bool/1).

-spec get_webhook_info(telega@bot:bot()) -> {ok, telega@model:webhook_info()} |
    {error, binary()}.
get_webhook_info(Bot) ->
    _pipe = new_get_request(Bot, <<"getWebhookInfo"/utf8>>, none),
    _pipe@1 = fetch(_pipe, Bot),
    map_resonse(_pipe@1, fun telega@model:decode_webhook_info/1).

-spec delete_webhook(telega@bot:bot()) -> {ok, boolean()} | {error, binary()}.
delete_webhook(Bot) ->
    _pipe = new_get_request(Bot, <<"deleteWebhook"/utf8>>, none),
    _pipe@1 = fetch(_pipe, Bot),
    map_resonse(_pipe@1, fun gleam@dynamic:bool/1).

-spec delete_webhook_and_drop_updates(telega@bot:bot()) -> {ok, boolean()} |
    {error, binary()}.
delete_webhook_and_drop_updates(Bot) ->
    _pipe = new_get_request(
        Bot,
        <<"deleteWebhook"/utf8>>,
        {some, [{<<"drop_pending_updates"/utf8>>, <<"true"/utf8>>}]}
    ),
    _pipe@1 = fetch(_pipe, Bot),
    map_resonse(_pipe@1, fun gleam@dynamic:bool/1).

-spec log_out(telega@bot:bot()) -> {ok, boolean()} | {error, binary()}.
log_out(Bot) ->
    _pipe = new_get_request(Bot, <<"logOut"/utf8>>, none),
    _pipe@1 = fetch(_pipe, Bot),
    map_resonse(_pipe@1, fun gleam@dynamic:bool/1).

-spec close(telega@bot:bot()) -> {ok, boolean()} | {error, binary()}.
close(Bot) ->
    _pipe = new_get_request(Bot, <<"close"/utf8>>, none),
    _pipe@1 = fetch(_pipe, Bot),
    map_resonse(_pipe@1, fun gleam@dynamic:bool/1).

-spec reply(telega@bot:context(any()), binary()) -> {ok, telega@model:message()} |
    {error, binary()}.
reply(Ctx, Text) ->
    _pipe@1 = new_post_request(
        erlang:element(3, Ctx),
        <<"sendMessage"/utf8>>,
        begin
            _pipe = gleam@json:object(
                [{<<"chat_id"/utf8>>,
                        gleam@json:int(
                            erlang:element(
                                2,
                                erlang:element(
                                    8,
                                    erlang:element(3, erlang:element(2, Ctx))
                                )
                            )
                        )},
                    {<<"text"/utf8>>, gleam@json:string(Text)}]
            ),
            gleam@json:to_string(_pipe)
        end,
        none
    ),
    _pipe@2 = fetch(_pipe@1, erlang:element(3, Ctx)),
    map_resonse(_pipe@2, fun telega@model:decode_message/1).

-spec set_my_commands(
    telega@bot:context(any()),
    list(telega@model:bot_command()),
    gleam@option:option(telega@model:bot_command_parameters())
) -> {ok, boolean()} | {error, binary()}.
set_my_commands(Ctx, Commands, Parameters) ->
    Parameters@1 = begin
        _pipe = gleam@option:unwrap(
            Parameters,
            telega@model:new_botcommand_parameters()
        ),
        telega@model:encode_botcommand_parameters(_pipe)
    end,
    Body_json = gleam@json:object(
        [{<<"commands"/utf8>>,
                gleam@json:array(
                    Commands,
                    fun(Command) ->
                        gleam@json:object(
                            [{<<"command"/utf8>>,
                                    gleam@json:string(
                                        erlang:element(2, Command)
                                    )},
                                {<<"description"/utf8>>,
                                    gleam@json:string(
                                        erlang:element(3, Command)
                                    )} |
                                Parameters@1]
                        )
                    end
                )}]
    ),
    _pipe@1 = new_post_request(
        erlang:element(3, Ctx),
        <<"setMyCommands"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@2 = fetch(_pipe@1, erlang:element(3, Ctx)),
    map_resonse(_pipe@2, fun gleam@dynamic:bool/1).

-spec delete_my_commands(
    telega@bot:context(any()),
    gleam@option:option(telega@model:bot_command_parameters())
) -> {ok, boolean()} | {error, binary()}.
delete_my_commands(Ctx, Parameters) ->
    Parameters@1 = begin
        _pipe = gleam@option:unwrap(
            Parameters,
            telega@model:new_botcommand_parameters()
        ),
        telega@model:encode_botcommand_parameters(_pipe)
    end,
    Body_json = gleam@json:object(Parameters@1),
    _pipe@1 = new_post_request(
        erlang:element(3, Ctx),
        <<"deleteMyCommands"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@2 = fetch(_pipe@1, erlang:element(3, Ctx)),
    map_resonse(_pipe@2, fun gleam@dynamic:bool/1).

-spec get_my_commands(
    telega@bot:context(any()),
    gleam@option:option(telega@model:bot_command_parameters())
) -> {ok, list(telega@model:bot_command())} | {error, binary()}.
get_my_commands(Ctx, Parameters) ->
    Parameters@1 = begin
        _pipe = gleam@option:unwrap(
            Parameters,
            telega@model:new_botcommand_parameters()
        ),
        telega@model:encode_botcommand_parameters(_pipe)
    end,
    Body_json = gleam@json:object(Parameters@1),
    _pipe@1 = new_post_request(
        erlang:element(3, Ctx),
        <<"getMyCommands"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@2 = fetch(_pipe@1, erlang:element(3, Ctx)),
    map_resonse(_pipe@2, fun telega@model:decode_bot_command/1).

-spec send_dice(
    telega@bot:context(any()),
    gleam@option:option(telega@model:send_dice_parameters())
) -> {ok, telega@model:message()} | {error, binary()}.
send_dice(Ctx, Parameters) ->
    Body_json = begin
        _pipe = Parameters,
        _pipe@1 = gleam@option:lazy_unwrap(
            _pipe,
            fun() ->
                telega@model:new_send_dice_parameters(
                    erlang:element(
                        2,
                        erlang:element(
                            8,
                            erlang:element(3, erlang:element(2, Ctx))
                        )
                    )
                )
            end
        ),
        telega@model:encode_send_dice_parameters(_pipe@1)
    end,
    _pipe@2 = new_post_request(
        erlang:element(3, Ctx),
        <<"sendDice"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@3 = fetch(_pipe@2, erlang:element(3, Ctx)),
    map_resonse(_pipe@3, fun telega@model:decode_message/1).

-spec get_me(telega@bot:context(any())) -> {ok, telega@model:user()} |
    {error, binary()}.
get_me(Ctx) ->
    _pipe = new_get_request(erlang:element(3, Ctx), <<"getMe"/utf8>>, none),
    _pipe@1 = fetch(_pipe, erlang:element(3, Ctx)),
    map_resonse(_pipe@1, fun telega@model:decode_user/1).