genderwatchprotocol/donations/donations.php

<?php
$dolibarrURL = "https://dolibarr.romanschenk.ch/";
$dolibarrAPIKey = "4mQX4x4x65MlkGZ9HUD5A4oElqTn92kl";
function createDonation($amount, $dolibarrURL, $dolibarrAPIKey) {
    $BusinesspartnerID = "220";
    $pulicNote = "Automatisch generiert von genderwatchprotocol.com";
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, $dolibarrURL."api/index.php/donations");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, "{\"amount\": ".$amount.", \"date\": ".time().", \"socid\": ".$BusinesspartnerID.", \"note_public\": \"Automatisch generiert von genderwatchprotocol.com\"}");

    $headers = array();
    $headers[] = 'Content-Type: application/json';
    $headers[] = 'Accept: application/json';
    $headers[] = 'Dolapikey: '.$dolibarrAPIKey;
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

    $result = curl_exec($ch);
    if (curl_errno($ch)) {
        echo 'Error:' . curl_error($ch);
    }
    curl_close($ch);
    return $result;
}

function validateDonation($donationID, $dolibarrURL, $dolibarrAPIKey) {
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, $dolibarrURL."api/index.php/donations/".$donationID."/validate");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, "{}");

    $headers = array();
    $headers[] = 'Content-Type: application/json';
    $headers[] = 'Accept: application/json';
    $headers[] = 'Dolapikey: '.$dolibarrAPIKey;
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

    $result = curl_exec($ch);
    if (curl_errno($ch)) {
        echo 'Error:' . curl_error($ch);
    }
    curl_close($ch);
    return $result;
}
function forwardToDonationPage($amount, $dolibarrURL, $dolibarrAPIKey){
    $donationID = createDonation($amount, $dolibarrURL, $dolibarrAPIKey);
    validateDonation($donationID, $dolibarrURL, $dolibarrAPIKey);
    $payment_link = $dolibarrURL."public/payment/newpayment.php?source=donation&ref=".($donationID)."&securekey=NSmKzZ73HW1zWO8nAlpdq95mDt77Q32o";
    header('Location: '.$payment_link);
}

$amount = (float)($_GET["amount"]);
if(is_numeric($amount) && $amount > 0) {
    forwardToDonationPage($amount, $dolibarrURL, $dolibarrAPIKey);
} else {
    $amount = (float)($_POST["amount"]);
    if(is_numeric($amount) && $amount > 0) {
        forwardToDonationPage($amount, $dolibarrURL, $dolibarrAPIKey);
    } else {
        echo "invalid amount!";
    }
}