wFirma API 2 exmple request token

index.php

<?php

define('SCOPE', 'invoices-read,invoices-write,contractors-write,goods-write,goods-read');
define('APP_URL', 'your-app.dev');

function requestToken() {
    $OAuth = new OAuth(CONSUMER_KEY, CONSUMER_SECRET, OAUTH_SIG_METHOD_PLAINTEXT);
    try {
        
        $tokenInfo = $OAuth->getRequestToken('https://wfirma.pl/oauth/requestToken?' .
            'oauth_callback=http://'.APP_URL.'/users/accessToken&scope=' . SCOPE,
            '',
            OAUTH_HTTP_METHOD_GET
        );
        
        $_SESSION['oauthSecret'] = $tokenInfo['oauth_token_secret'];
        header('Location: https://wfirma.pl/oauth/authorize?'. 
               'oauth_token='.$tokenInfo['oauth_token']);
    } catch(OAuthException $E) {
        // Wystąpił błąd podczas autoryzacji.
    }
}