telega

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

-export([new_api_config/1, set_webhook/2, get_webhook_info/1, delete_webhook/1, delete_webhook_and_drop_updates/1, log_out/1, close/1, send_message/2, set_my_commands/3, delete_my_commands/2, get_my_commands/2, send_dice/2, get_me/1, answer_callback_query/2, edit_message_text/2, forward_message/2]).
-export_type([telegram_api_config/0, telegram_api_request/0, api_response/1]).

-type telegram_api_config() :: {telegram_api_config,
        binary(),
        integer(),
        binary()}.

-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(TSD) :: {api_response, boolean(), TSD}.

-spec new_api_config(binary()) -> telegram_api_config().
new_api_config(Token) ->
    {telegram_api_config, Token, 3, <<"https://api.telegram.org"/utf8>>}.

-spec build_url(telegram_api_config(), binary()) -> binary().
build_url(Config, Path) ->
    <<<<<<(erlang:element(4, Config))/binary,
                (erlang:element(2, Config))/binary>>/binary,
            "/"/utf8>>/binary,
        Path/binary>>.

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

-spec new_get_request(
    telegram_api_config(),
    binary(),
    gleam@option:option(list({binary(), binary()}))
) -> telegram_api_request().
new_get_request(Config, Path, Query) ->
    {telegram_api_get_request, build_url(Config, 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(Error) ->
            <<"Failed to convert API request to HTTP request: "/utf8,
                (gleam@string:inspect(Error))/binary>>
        end
    ).

-spec response_decoder(
    fun((gleam@dynamic:dynamic_()) -> {ok, TUJ} |
        {error, list(gleam@dynamic:decode_error())})
) -> fun((gleam@dynamic:dynamic_()) -> {ok, api_response(TUJ)} |
    {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, TUD} |
        {error, list(gleam@dynamic:decode_error())})
) -> {ok, TUD} | {error, binary()}.
map_resonse(Response, Result_decoder) ->
    _pipe = Response,
    _pipe@4 = gleam@result:map(
        _pipe,
        fun(Response@1) -> _pipe@1 = response_decoder(Result_decoder),
            _pipe@2 = gleam@json:decode(erlang:element(4, Response@1), _pipe@1),
            _pipe@3 = gleam@result:replace_error(
                _pipe@2,
                <<"Failed to decode response: "/utf8,
                    (erlang:element(4, Response@1))/binary>>
            ),
            gleam@result:map(
                _pipe@3,
                fun(Response@2) -> erlang:element(3, Response@2) end
            ) end
    ),
    gleam@result:flatten(_pipe@4).

-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(), telegram_api_config()) -> {ok,
        gleam@http@response:response(binary())} |
    {error, binary()}.
fetch(Api_request, Config) ->
    gleam@result:'try'(
        api_to_request(Api_request),
        fun(Api_request@1) ->
            _pipe = send_with_retry(Api_request@1, erlang:element(3, Config)),
            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(telegram_api_config(), telega@model:set_webhook_parameters()) -> {ok,
        boolean()} |
    {error, binary()}.
set_webhook(Config, Parameters) ->
    Body = telega@model:encode_set_webhook_parameters(Parameters),
    _pipe = new_post_request(
        Config,
        <<"setWebhook"/utf8>>,
        gleam@json:to_string(Body),
        none
    ),
    _pipe@1 = fetch(_pipe, Config),
    map_resonse(_pipe@1, fun gleam@dynamic:bool/1).

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

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

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

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

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

-spec send_message(
    telegram_api_config(),
    telega@model:send_message_parameters()
) -> {ok, telega@model:message()} | {error, binary()}.
send_message(Config, Parameters) ->
    Body_json = telega@model:encode_send_message_parameters(Parameters),
    _pipe = new_post_request(
        Config,
        <<"sendMessage"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@1 = fetch(_pipe, Config),
    map_resonse(_pipe@1, fun telega@model:decode_message/1).

-spec set_my_commands(
    telegram_api_config(),
    list(telega@model:bot_command()),
    gleam@option:option(telega@model:bot_command_parameters())
) -> {ok, boolean()} | {error, binary()}.
set_my_commands(Config, Commands, Parameters) ->
    Parameters@1 = begin
        _pipe = gleam@option:unwrap(
            Parameters,
            telega@model:default_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(
        Config,
        <<"setMyCommands"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@2 = fetch(_pipe@1, Config),
    map_resonse(_pipe@2, fun gleam@dynamic:bool/1).

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

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

-spec send_dice(telegram_api_config(), telega@model:send_dice_parameters()) -> {ok,
        telega@model:message()} |
    {error, binary()}.
send_dice(Config, Parameters) ->
    Body_json = telega@model:encode_send_dice_parameters(Parameters),
    _pipe = new_post_request(
        Config,
        <<"sendDice"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@1 = fetch(_pipe, Config),
    map_resonse(_pipe@1, fun telega@model:decode_message/1).

-spec get_me(telegram_api_config()) -> {ok, telega@model:user()} |
    {error, binary()}.
get_me(Config) ->
    _pipe = new_get_request(Config, <<"getMe"/utf8>>, none),
    _pipe@1 = fetch(_pipe, Config),
    map_resonse(_pipe@1, fun telega@model:decode_user/1).

-spec answer_callback_query(
    telegram_api_config(),
    telega@model:answer_callback_query_parameters()
) -> {ok, boolean()} | {error, binary()}.
answer_callback_query(Config, Parameters) ->
    Body_json = telega@model:encode_answer_callback_query_parameters(Parameters),
    _pipe = new_post_request(
        Config,
        <<"answerCallbackQuery"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@1 = fetch(_pipe, Config),
    map_resonse(_pipe@1, fun gleam@dynamic:bool/1).

-spec edit_message_text(
    telegram_api_config(),
    telega@model:edit_message_text_parameters()
) -> {ok, telega@model:edit_message_text_result()} | {error, binary()}.
edit_message_text(Config, Parameters) ->
    Body_json = telega@model:encode_edit_message_text_parameters(Parameters),
    _pipe = new_post_request(
        Config,
        <<"editMessageText"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@1 = fetch(_pipe, Config),
    map_resonse(_pipe@1, fun telega@model:decode_edit_message_text_result/1).

-spec forward_message(
    telegram_api_config(),
    telega@model:forward_message_parameters()
) -> {ok, telega@model:message()} | {error, binary()}.
forward_message(Config, Parameters) ->
    Body_json = telega@model:encode_forward_message_parameters(Parameters),
    _pipe = new_post_request(
        Config,
        <<"forwardMessage"/utf8>>,
        gleam@json:to_string(Body_json),
        none
    ),
    _pipe@1 = fetch(_pipe, Config),
    map_resonse(_pipe@1, fun telega@model:decode_message/1).