/*
 This file is part of GNU Taler
 (C) 2021 Taler Systems S.A.

 GNU Taler is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
 Foundation; either version 3, or (at your option) any later version.

 GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

 You should have received a copy of the GNU General Public License along with
 GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */

 import { h, VNode } from "preact";
 import { useEffect, useRef } from "preact/hooks";
 import qrcode from "qrcode-generator";
 
 export function QR({ text }: { text: string; }):VNode {
   const divRef = useRef<HTMLDivElement>(null);
   useEffect(() => {
     if (!divRef.current) return
     const qr = qrcode(0, 'L');
     qr.addData(text);
     qr.make();
     divRef.current.innerHTML = qr.createSvgTag({
       scalable: true,
     });
   });
 
   return <div style={{ width: '100%', display: 'flex', flexDirection: 'column', alignItems: 'center' }}>
     <div style={{ width: '50%', minWidth: 200, maxWidth: 300 }} ref={divRef} />
   </div>;
 }