$html .= "<div class='row'><label>Сумма возврата</label><input type='text' name='amount'/></div>";
$html .= "<div class='row'><label>Текст сообщения</label><input type='text' name='message_text'/></div>";
$html .= "<div class='row'><label>URL картинки сообщения</label><input type='text' name='message_image_url'/></div>";
$html .= "<div class='row'><label>URL сообщения</label><input type='text' name='message_url'/></div>";
$html .= "<div class='row'><input type='submit'/></div>";
$html .= "</form>";
echo $html;
$method = isset($_POST["method"]) ? $_POST["method"] : "";
$id = isset($_POST["id"]) ? $_POST["id"] : "";
if (!empty($id)) {
$Payqr_invoice = new PayqrInvoiceAction();
$Payqr_revert = new PayqrRevertAction();
$result = "";
switch ($method) {
case "get_invoice":
$result = $Payqr_invoice->get_invoice($id);
break;
case "invoice_cancel":
$result = $Payqr_invoice->invoice_cancel($id);
break;
case "invoice_revert":
$result = $Payqr_invoice->invoice_revert($id, $amount);
break;
case "invoice_confirm":
$result = $Payqr_invoice->invoice_confirm($id);
break;
case "invoice_message":
$result = $Payqr_invoice->invoice_message($id, $_POST["message_text"], $_POST["message_image_url"], $_POST["message_url"]);
break;
case "get_revert":
$result = $Payqr_revert->get_revert($revertId);
