component RefundButton {
  props { paymentId: string refundable: number partial?: boolean = false action?: string = "/api/payments/refund" }
  view { <form method="post" action={action}><input type="hidden" name="paymentId" value={paymentId} /><label>Reason<input name="reason" required /></label>{#if partial}<label>Amount<input name="amount" type="number" min="1" max={refundable} /></label>{/if}<button type="submit">Refund</button></form> }
}