<?php
// inspired by https://www.mailgun.com/blog/email/double-opt-in-with-php-mailgun/
$statusCode = "HTTP/1.1 303 See Other";

$successURL = '/newsletter/confirmed.html';
$errorURL = '/newsletter/confirm-error.html';

// return TRUE when successful, message string on failure
// e.g. Adresse schon vorhanden, Datenbank-Fehler, was noch?
function AddMemberToDB($recipientAddress) {
  global $db;
  echo "ah jup";
  return TRUE;
}


require(dirname(__FILE__) . "/settings.php");

$c = isset($_GET['c']) ? SanitizeInputs($_GET['c']) : NULL;
$e = isset($_GET['e']) ? SanitizeInputs($_GET['e']) : NULL;

if (! (isset($c) && isset($e) && CheckConfirmationHash($e, $c)) ) {
  header($statusCode);
  header("Location: " . $errorURL . "?" . http_build_query(["msg" => SanitizeInputs("Ungültiger Link")]));
} else {
  $result = AddMemberToDB($e);
  if ($result == TRUE) {
    header($statusCode);
    header("Location: " . $successURL);
  } elseif (gettype($result == "string")) {
    header($statusCode);
    header("Location: " . $errorURL . "?" . http_build_query(["msg" => SanitizeInputs($result)]));
  } else {
    header($statusCode);
    header("Location: " . $errorURL . "?" . http_build_query(["msg" => SanitizeInputs("Unbekannter Fehler")]));
  }
}
?>