TelegramBot\Telegram

Complexity

Total Complexity

41

Size/Duplication

Total Lines	311
Duplicated Lines	0 %

Importance

Changes	1
Bugs	0	Features	0

16 Methods

Rating	Name	Duplication	Size	Complexity
A	validateWebData()	0	17	2
A	getTokenFromEnvFile()	0	4	2
A	deleteWebhook()	0	11	2
A	getUpdate()	0	5	2
A	getEnvFilePath()	0	15	3
A	setWebhook()	0	28	4
A	fetchWith()	0	5	3
B	processUpdate()	0	37	7
A	getInfo()	0	9	2
A	__construct()	0	13	4
A	getInput()	0	3	1
A	validateToken()	0	4	1
A	setAdmin()	0	3	2
A	getApiKey()	0	3	1
A	setDebugMode()	0	7	4
A	echo()	0	3	1

<?php

namespace TelegramBot;

use TelegramBot\Entities\Response;
use TelegramBot\Entities\Update;
use TelegramBot\Exception\TelegramException;
use TelegramBot\Util\Common;
use TelegramBot\Util\DotEnv;

/**
 * Class Telegram
 *
 * @link    https://github.com/telegram-bot-php/core
 * @author  Shahrad Elahi (https://github.com/shahradelahi)
 * @license https://github.com/telegram-bot-php/core/blob/master/LICENSE (MIT License)
 */
class Telegram
{

    /**
     * @var string
     */
    private string $api_key;

    /**
     * @var string
     */
    public static string $VERSION = 'v1.0.0';

    /**
     * Telegram constructor.
     *
     * @param string $api_key
     */
    public function __construct(string $api_key = '')
    {
        if ($api_key === '') {
            $env_file = $this->getEnvFilePath();
            $api_key = DotEnv::load($env_file)->get('TELEGRAM_API_KEY');
        }

        if (empty($api_key) || !is_string($api_key)) {
            throw new TelegramException('API Key is required');
        }

        DotEnv::put('TG_CURRENT_KEY', ($this->api_key = $api_key));
        DotEnv::put('TELEGRAM_API_KEY', ($this->api_key = $api_key));
    }

    /**
     * Get env file path and return it
     *
     * @return string
     */
    private function getEnvFilePath(): string
    {
        $defaultEnvPaths = [
            $_SERVER['DOCUMENT_ROOT'] . '/.env',
            getcwd() . '/../.env',
            getcwd() . '/.env',
        ];

        foreach ($defaultEnvPaths as $path) {
            if (file_exists($path)) {
                return $path;
            }
        }

        return '';
    }

    /**
     * Get API key from temporary ENV variable
     *
     * @return ?string
     */
    public static function getApiKey(): ?string
    {
        return DotEnv::get('TG_CURRENT_KEY');
    }

    /**
     * Get bot info from given API key
     *
     * @return Response
     * @throws TelegramException
     */
    public function getInfo(): Response
    {
        $result = Request::getMe();

        if (!$result->isOk()) {
            throw new TelegramException($result->getErrorCode() . ': ' . $result->getDescription());
        }

        return $result;
    }

    /**
     * Set Webhook for bot
     *
     * @param string $url
     * @param array $data Optional parameters.
     * @return Response
     * @throws TelegramException
     */
    public function setWebhook(string $url, array $data = []): Response
    {
        if ($url === '') {
            throw new TelegramException('Hook url is empty!');
        }

        if (!str_starts_with($url, 'https://')) {
            throw new TelegramException('Hook url must start with https://');
        }

        $data = array_intersect_key($data, array_flip([
            'certificate',
            'ip_address',
            'max_connections',
            'allowed_updates',
            'drop_pending_updates',
        ]));
        $data['url'] = $url;

        $result = Request::setWebhook($data);

        if (!$result->isOk()) {
            throw new TelegramException(
                'Webhook was not set! Error: ' . $result->getErrorCode() . ' ' . $result->getDescription()
            );
        }

        return $result;
    }

    /**
     * Delete any assigned webhook
     *
     * @param array $data
     * @return Response
     * @throws TelegramException
     */
    public function deleteWebhook(array $data = []): Response
    {
        $result = Request::deleteWebhook($data);

        if (!$result->isOk()) {
            throw new TelegramException(
                'Webhook was not deleted! Error: ' . $result->getErrorCode() . ' ' . $result->getDescription()
            );
        }

        return $result;
    }

    /**
     * This method sets the admin username. and will be used to send you a message if the bot is not working.
     *
     * @param int $chat_id
     * @return void
     */
    public function setAdmin(int $chat_id): void
    {
        defined('TG_ADMIN_ID') or define('TG_ADMIN_ID', $chat_id);
    }

    /**
     * Get input from stdin and return it
     *
     * @return ?string
     */
    public static function getInput(): ?string
    {
        return file_get_contents('php://input') ?? null;
    }

    /**
     * This method will convert a string to an update object
     *
     * @param string $input The input string
     * @param string $apiKey The API key
     * @return Update|false
     */
    public static function processUpdate(string $input, string $apiKey): Update|false
    {
        if (empty($input)) {
            throw new TelegramException(
                'Input is empty! Please check your code and try again.'
            );
        }

        if (!self::validateToken($apiKey)){
            throw new TelegramException(
                'Invalid token! Please check your code and try again.'
            );
        }

        if (self::validateWebData($apiKey, $input)) {
            if (Common::isUrlEncode($input)) {
                $web_data = Common::urlDecode($input);
            }

            if (Common::isJson($input)) {
                $web_data = json_decode($input, true);
            }

            $input = json_encode([
                'web_data' => $web_data,

The variable $web_data does not seem to be defined for all execution paths leading up to this point.

            ]);
        }

        if (!Common::isJson($input)) {
            throw new TelegramException(
                'Input is not a valid JSON string! Please check your code and try again.'
            );
        }

        $input = json_decode($input, true);

        return new Update($input);
    }

    /**
     * Validate webapp data from is from Telegram
     *
     * @link https://core.telegram.org/bots/webapps#validating-data-received-via-the-web-app
     *
     * @param string $token The bot token
     * @param string $body The message body from getInput()
     * @return bool
     */
    public static function validateWebData(string $token, string $body): bool
    {
        if (!Common::isJson($body)) {
            $raw_data = rawurldecode(str_replace('_auth=', '', $body));
            $data = Common::urlDecode($raw_data);

            $data['user'] = urldecode($data['user']);

        } else {
            $data = json_decode($body, true);
            $data['user'] = json_encode($data['user']);
        }

        $data_check_string = "auth_date={$data['auth_date']}\nquery_id={$data['query_id']}\nuser={$data['user']}";
        $secret_key = hash_hmac('sha256', $token, "WebAppData", true);

        return hash_hmac('sha256', $data_check_string, $secret_key) == $data['hash'];
    }

    /**
     * Get the update from input
     *
     * @return Update|false
     */
    public static function getUpdate(): Update|false
    {
        $input = self::getInput();
        if (empty($input)) return false;
        return Telegram::processUpdate($input, self::getApiKey());
    }

    /**
     * Validate the token
     *
     * @param string $token (e.g. 123456789:ABC-DEF1234ghIkl-zyx57W2v1u123ew11) {digit}:{alphanumeric[34]}
     * @return bool
     */
    public static function validateToken(string $token): bool
    {
        preg_match_all('/([0-9]+:[a-zA-Z0-9-_]+)/', $token, $matches);
        return count($matches[0]) == 1;
    }

    /**
     * Pass the update to the given webhook handler
     *
     * @param WebhookHandler $webhook_handler The webhook handler
     * @param ?Update $update By default, it will get the update from input
     * @return void
     */
    public function fetchWith(WebhookHandler $webhook_handler, ?Update $update = null): void
    {
        if (is_subclass_of($webhook_handler, WebhookHandler::class)) {
            if ($update === null) $update = self::getUpdate();
            $webhook_handler->resolve($update);

It seems like $update can also be of type false; however, parameter $update of TelegramBot\WebhookHandler::resolve() does only seem to accept TelegramBot\Entities\Update|null, maybe add an additional type check?

        }
    }

    /**
     * Get token from env file.
     *
     * @param string $file
     * @return ?string
     */
    protected function getTokenFromEnvFile(string $file): ?string
    {
        if (!file_exists($file)) return null;
        return DotEnv::load($file)::get('TELEGRAM_API_KEY');
    }

    /**
     * Debug mode
     *
     * @param ?int $admin_id Fill this or use setAdmin()
     * @return void
     */
    public static function setDebugMode(?int $admin_id = null): void
    {
        error_reporting(E_ALL);
        ini_set('display_errors', 1);
        defined('DEBUG_MODE') or define('DEBUG_MODE', true);
        if ($admin_id) {

The expression $admin_id of type integer|null is loosely compared to true; this is ambiguous if the integer can be 0. You might want to explicitly use !== null instead.

            defined('TG_ADMIN_ID') or define('TG_ADMIN_ID', $admin_id);
        }
    }

    /**
     * Just another echo
     *
     * @param string $text
     * @return void
     */
    public static function echo(string $text): void
    {
        echo $text;
    }

}