QR code for phone app stores in desktop browsers

Probably the most straight-forward approach is either to compile

external libraries into my code (ugh) or externalize them and host

them on GAE, which I believe is a white-listed script source in

OverDrive

https://api.github.com/groton-school/knowledgebase/blob/cf6f469c9c0d56602df52459b4517896ac43856b/src/Embed/AppStoreLinks/index.ts#L22


//import * as QRCode from 'qrcode';
import Helper from '../../Helper';
import './styles.scss';

const appStore = 'a[href^="https://apps.apple.com/"]';
const playStore = 'a[href^="https://play.google.com/"]';

function embed(paragraphs: HTMLElement[]) {
  paragraphs.forEach((p) => {
    const ios = p.querySelector(appStore) as HTMLAnchorElement;
    const android = p.querySelector(playStore) as HTMLAnchorElement;
    const id = crypto.randomUUID();
    p.outerHTML =
      `<div id="${id}">` +
      `<div class="gs-app-links">` +
      (ios && `<a class="gs-apple" href="${ios.href}"></a>`) +
      (android && `<a class="gs-play" href="${android.href}"></a>`) +
      `</div>` +
      `</div>`;

    /*
     * TODO implement QRCodes
     *   Probably the most straight-forward approach is either to compile
     *   external libraries into my code (ugh) or externalize them and host
     *   them on GAE, which I believe is a white-listed script source in
     *   OverDrive
     */
    /*
    QRCode.toCanvas(
      document.querySelector(`#${id} .gs-apple canvas`) as HTMLCanvasElement,
      ios.href
    );
    QRCode.toCanvas(
      document.querySelector(`#${id} .gs-android canvas`) as HTMLCanvasElement,
      android.href
    );
    */
  });
  Helper.log('embedded app store links');
}

/*
function waitForLib(paragraphs: HTMLElement[]) {
  if (QRCode === undefined) {
    setTimeout(() => waitForLib(paragraphs));
  } else {
    embed(paragraphs);
  }
}
*/

export default function AppStoreLinks() {
  Helper.onGoogleDocEmbed(`p:has(${appStore}), p:has(${playStore})`).then(
    (paragraphs) => {
      /*
      const lib = document.createElement('script') as HTMLScriptElement;
      lib.src =
        'https://cdnjs.cloudflare.com/ajax/libs/qrcode/1.5.1/qrcode.min.js';
      lib.integrity =
        'sha512-PEhlWBZBrQL7flpJPY8lXx8tIN7HWX912GzGhFTDqA3iWFrakVH3lVHomCoU9BhfKzgxfEk6EG2C3xej+9srOQ==';
      lib.crossOrigin = 'anonymous';
      lib.referrerPolicy = 'no-referrer';
      document.head.appendChild(lib);
      waitForLib(paragraphs);
      */
      embed(paragraphs);
    }
  );
}

groton-school / knowledgebase

QR code for phone app stores in desktop browsers #10