From 64f473d214c687b6fbf1f120ab102ed001723c38 Mon Sep 17 00:00:00 2001
From: Marvin Sextro <marvin.sextro@gmail.com>
Date: Mon, 27 Dec 2021 19:06:31 +0100
Subject: [PATCH] Added QR code viewer and fixed button behavior

---
 components/Button.tsx |  5 +++++
 components/Form.tsx   |  4 ++--
 package.json          |  1 +
 pages/pass.tsx        | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/payload.ts        | 33 ++++++++++++++++++++++++++++++---
 yarn.lock             | 26 ++++++++++++++++++++++++--
 6 files changed, 104 insertions(+), 7 deletions(-)
 create mode 100644 pages/pass.tsx

diff --git a/components/Button.tsx b/components/Button.tsx
index b9e53be..b8326d4 100644
--- a/components/Button.tsx
+++ b/components/Button.tsx
@@ -11,6 +11,11 @@ export enum ButtonType {
     button = 'button',
 }
 
+Button.defaultProps = {
+    loading: false,
+    type: ButtonType.button,
+}
+
 function Button(props: ButtonProps): JSX.Element {
     return (
         <button
diff --git a/components/Form.tsx b/components/Form.tsx
index 40500ef..b0bfc65 100644
--- a/components/Form.tsx
+++ b/components/Form.tsx
@@ -74,7 +74,7 @@ function Form(): JSX.Element {
             navigator.userAgent.indexOf('CriOS') == -1 && 
             navigator.userAgent.indexOf('FxiOS') == -1
         )
-    }, []);
+    }, [isSafari]);
 
     // Whether Safari is used or not
     let [isShareDialogAvailable, setIsShareDialogAvailable] = useState<boolean>(false);
@@ -82,7 +82,7 @@ function Form(): JSX.Element {
     // Check if share dialog is available
     useEffect(() => {
         setIsShareDialogAvailable(window.navigator && window.navigator.share !== undefined);
-    }, []);
+    }, [isShareDialogAvailable]);
 
     // Open share dialog
     async function showShareDialog() {
diff --git a/package.json b/package.json
index f7288a9..1c1f3b0 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "pdfjs-dist": "^2.5.207",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
+    "react-qr-code": "^2.0.3",
     "uuid": "^8.3.2",
     "webpack": "^5.0.0",
     "worker-loader": "^3.0.7"
diff --git a/pages/pass.tsx b/pages/pass.tsx
new file mode 100644
index 0000000..420ad6e
--- /dev/null
+++ b/pages/pass.tsx
@@ -0,0 +1,42 @@
+import {serverSideTranslations} from 'next-i18next/serverSideTranslations';
+
+import React, {useEffect, useState} from "react";
+import QRCode from "react-qr-code";
+import Card from '../components/Card';
+import Logo from "../components/Logo";
+
+function Pass(): JSX.Element {
+    const [fragment, setFragment] = useState<string>(undefined);
+
+    useEffect(() => {
+        const rawFragment = window.location.hash.substring(1);
+        const decodedFragment = Buffer.from(rawFragment, 'base64').toString();
+        setFragment(decodedFragment);
+    }, [fragment]);
+
+    return (
+        <div className="py-6 flex flex-col space-y-5 items-center">
+            <Logo/>
+            <div className="flex flex-row items-center">
+                {
+                    fragment && 
+                    <Card content={
+                        <div className="p-2 bg-white rounded-md">
+                        <QRCode value={fragment} size={280} level="L" />
+                        </div>
+                    } />
+                }
+            </div>
+        </div>
+    )
+}
+
+export async function getStaticProps({ locale }) {
+    return {
+        props: {
+            ...(await serverSideTranslations(locale, ['common'])),
+        },
+    };
+}
+
+export default Pass;
diff --git a/src/payload.ts b/src/payload.ts
index fbe1d17..e7c1f07 100644
--- a/src/payload.ts
+++ b/src/payload.ts
@@ -116,6 +116,11 @@ export class Payload {
 
         const country = valueSets.countryCodes[countryCode].display;
 
+        // Encode raw data and get url
+        const encodedData = Buffer.from(body.rawData).toString('base64');
+        const url = window.location.protocol + "//" + window.location.host;
+
+
         const generic: PassDictionary = {
             headerFields: [
                 {
@@ -134,6 +139,11 @@ export class Payload {
             secondaryFields: [],
             auxiliaryFields: [],
             backFields: [
+                {
+                    key: "enlarge",
+                    label: "Enlarging the QR Code",
+                    value: `Inside the Wallet app on iOS, press and hold or open the link below. This does not work when accessing the Wallet by double-clicking the side button.\n<a href='${url}/pass#${encodedData}'>Enlarge QR Code</a>`
+                },
                 {
                     key: "uvci",
                     label: "Unique Certificate Identifier (UVCI)",
@@ -157,10 +167,27 @@ export class Payload {
         this.img2x = dark ? Constants.img2xWhite : Constants.img2xBlack
         this.dark = dark;
 
-        this.generic = Payload.fillPassData(this.certificateType, generic, properties, valueSets, country, dateOfBirth);
+        this.generic = Payload.fillPassData(
+            this.certificateType, 
+            generic, 
+            properties, 
+            valueSets, 
+            country, 
+            dateOfBirth, 
+            url
+        );
     }
 
-    static fillPassData(type: CertificateType, data: PassDictionary, properties: Object, valueSets: ValueSets, country: string, dateOfBirth: string): PassDictionary {
+    static fillPassData(
+        type: CertificateType, 
+        data: PassDictionary, 
+        properties: Object, 
+        valueSets: ValueSets, 
+        country: string, 
+        dateOfBirth: string,
+        url: string
+    ): PassDictionary {
+
         switch (type) {
             case CertificateType.Vaccination:
                 const dose = `${properties['dn']}/${properties['sd']}`;
@@ -353,7 +380,7 @@ export class Payload {
             {
                 key: "credits",
                 label: "",
-                value: "Created with <a href='https://covidpass.marvinsextro.de'>CovidPass</a>"
+                value: `Created with <a href='${url}'>CovidPass</a>`
             }
         ]);
 
diff --git a/yarn.lock b/yarn.lock
index 3d64f08..02d36ab 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1873,7 +1873,7 @@ lodash@^4.17.21:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
   integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
-loose-envify@^1.1.0:
+loose-envify@^1.1.0, loose-envify@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
   integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
@@ -2396,6 +2396,15 @@ process@0.11.10, process@^0.11.10:
   resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
   integrity sha1-czIwDoQBYb2j5podHZGn1LwW8YI=
 
+prop-types@^15.7.2:
+  version "15.8.0"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.8.0.tgz#d237e624c45a9846e469f5f31117f970017ff588"
+  integrity sha512-fDGekdaHh65eI3lMi5OnErU6a8Ighg2KjcjQxO7m8VHyWjcPyj5kiOgV1LQDOOOgVy3+5FgjXvdSSX7B8/5/4g==
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.13.1"
+
 public-encrypt@^4.0.0:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/public-encrypt/-/public-encrypt-4.0.3.tgz#4fcc9d77a07e48ba7527e7cbe0de33d0701331e0"
@@ -2433,6 +2442,11 @@ purgecss@^4.0.3:
     postcss "^8.3.5"
     postcss-selector-parser "^6.0.6"
 
+qr.js@0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/qr.js/-/qr.js-0.0.0.tgz#cace86386f59a0db8050fa90d9b6b0e88a1e364f"
+  integrity sha1-ys6GOG9ZoNuAUPqQ2baw6IoeNk8=
+
 querystring-es3@0.2.1, querystring-es3@^0.2.0:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/querystring-es3/-/querystring-es3-0.2.1.tgz#9ec61f79049875707d69414596fd907a4d711e73"
@@ -2513,11 +2527,19 @@ react-is@17.0.2:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.2.tgz#e691d4a8e9c789365655539ab372762b0efb54f0"
   integrity sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==
 
-react-is@^16.7.0:
+react-is@^16.13.1, react-is@^16.7.0:
   version "16.13.1"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
   integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
 
+react-qr-code@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/react-qr-code/-/react-qr-code-2.0.3.tgz#cc80785e08f817d1ab066ca4035262f77d049648"
+  integrity sha512-6GDH0l53lksf2JgZwwcoS0D60a1OAal/GQRyNFkMBW19HjSqvtD5S20scmSQsKl+BgWM85Wd5DCcUYoHd+PZnQ==
+  dependencies:
+    prop-types "^15.7.2"
+    qr.js "0.0.0"
+
 react-refresh@0.8.3:
   version "0.8.3"
   resolved "https://registry.yarnpkg.com/react-refresh/-/react-refresh-0.8.3.tgz#721d4657672d400c5e3c75d063c4a85fb2d5d68f"