From f8a7f054815f9acc6159a5464029e93a4a09835d Mon Sep 17 00:00:00 2001
From: Marvin Sextro <marvin.sextro@gmail.com>
Date: Sat, 26 Jun 2021 00:28:35 +0200
Subject: [PATCH] Add basic error handling and color picker

---
 README.md           |   6 ++
 components/Alert.js |  20 +++++
 components/Form.js  |  68 +++++++++++-----
 components/Page.js  |   2 +-
 package-lock.json   | 183 ++++++++++----------------------------------
 package.json        |   4 +-
 pages/index.js      |   3 +-
 src/decode.js       |   4 +-
 8 files changed, 121 insertions(+), 169 deletions(-)
 create mode 100644 components/Alert.js

diff --git a/README.md b/README.md
index 68ce0a0..3ac08db 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,12 @@ Web app for adding EU COVID-19 Vaccination Certificates to your wallets
 
 ## Debug locally
 
+```sh
+nodemon -w server.js server.js
+```
+
+Build and run the container
+
 ```sh
 docker build . -t covidpass
 docker run -t -i -p 3000:3000 covidpass
diff --git a/components/Alert.js b/components/Alert.js
new file mode 100644
index 0000000..ee6a07f
--- /dev/null
+++ b/components/Alert.js
@@ -0,0 +1,20 @@
+
+export default Alert
+
+export function Alert() {
+
+  const close = function() {
+    const alert = document.getElementById('alert')
+    alert.setAttribute('style', 'display: none;')
+  }
+
+  return(
+    <div id="alert" style={{"display": "none"}} className="bg-red-100 border border-red-400 text-red-700 px-4 mx-4 py-3 rounded relative" role="alert">
+      <strong className="font-bold" id="heading"></strong>
+      <span className="block sm:inline" id="message"></span>
+      <span className="absolute top-0 bottom-0 right-0 px-4 py-3" onClick={close}>
+        <svg className="fill-current h-6 w-6 text-red-500" role="button" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20"><title>Close</title><path d="M14.348 14.849a1.2 1.2 0 0 1-1.697 0L10 11.819l-2.651 3.029a1.2 1.2 0 1 1-1.697-1.697l2.758-3.15-2.759-3.152a1.2 1.2 0 1 1 1.697-1.697L10 8.183l2.651-3.031a1.2 1.2 0 1 1 1.697 1.697l-2.758 3.152 2.758 3.15a1.2 1.2 0 0 1 0 1.698z"/></svg>
+      </span>
+    </div>
+  )
+}
\ No newline at end of file
diff --git a/components/Form.js b/components/Form.js
index 842f065..988acd2 100644
--- a/components/Form.js
+++ b/components/Form.js
@@ -5,10 +5,20 @@ import jsQR from "jsqr";
 
 import { decodeData } from "../src/decode"
 import Card from "../components/Card"
+import Alert from "../components/Alert"
 
 export default Form
 
 function Form() {
+
+  const error = function(heading, message) {
+    const alert = document.getElementById('alert')
+    alert.setAttribute('style', null)
+    
+    document.getElementById('heading').innerHTML = heading
+    document.getElementById('message').innerHTML = message
+  }
+
   const processPdf = async function(input) {
     const file = input.target.files[0]
     var fileReader = new FileReader(); 
@@ -34,8 +44,6 @@ function Form() {
         return await renderTask.promise
       })
 
-      console.log(canvas.toDataURL('image/png'));
-
       var imageData = ctx.getImageData(0, 0, canvas.width, canvas.height)
       var code = jsQR(imageData.data, imageData.width, imageData.height, {
         inversionAttempts: 'dontInvert',
@@ -43,10 +51,13 @@ function Form() {
 
       if (code) {
         const rawData = code.data
-        console.log(rawData)
+        let decoded
 
-        const decoded = decodeData(rawData)
-        console.log(decoded)
+        try {
+          decoded = decodeData(rawData) 
+        } catch (error) {
+          error('Invalid QR code found', 'Make sure that you picked the correct PDF')
+        }
 
         const result = JSON.stringify({ decoded: decoded, raw: rawData })
 
@@ -55,6 +66,8 @@ function Form() {
 
         const download = document.getElementById('download')
         download.disabled = false
+      } else {
+        error('No QR code found', 'Try scanning the PDF again')
       }
     }
 
@@ -63,11 +76,12 @@ function Form() {
 
   return (
     <div>
+      <Alert message="" heading="" />
       <form id="form">
         <Card step={1} heading="Select Certificate" content={
           <div className="space-y-5">
             <p>
-              Please select the (scanned) certificate PDF, which you received from your doctor, pharmacy, vaccination centre or online.
+              Please select the (scanned) certificate PDF page, which you received from your doctor, pharmacy, vaccination centre or online.
             </p>
             <input
               type="file"
@@ -83,24 +97,38 @@ function Form() {
             />
           </div>
         }/>
-        <Card step={2} heading="Add to Wallet" content={
+      </form>
+      <form id="hidden" action="https://api.covidpass.marvinsextro.de/covid.pkpass" method="POST">
+        <Card step={2} heading="Pick a Color" content={
           <div className="space-y-5">
-            <label htmlFor="privacy" className="flex flex-row space-x-4">
-              <input type="checkbox" id="privacy" value="privacy" required />
-              <p>
-                I have read the <a href="/privacy">Privacy Policy</a>
-              </p>
-            </label>
-            <form id="hidden" action="https://api.covidpass.marvinsextro.de/covid.pkpass" method="POST">
-              <input type="hidden" id="payload" name="payload" />
-              <button id="download" type="download" disabled className="shadow-inner focus:outline-none bg-green-600 py-1 px-2 text-white font-semibold rounded-md disabled:bg-gray-400">
-                Add to Wallet
-              </button>
-            </form>
+            <select name="color" id="color">
+              <option value="white">white</option>
+              <option value="black">black</option>
+              <option value="grey">grey</option>
+              <option value="green">green</option>
+              <option value="indigo">indigo</option>
+              <option value="blue">blue</option>
+              <option value="purple">purple</option>
+              <option value="teal">teal</option>
+            </select>
+          </div>
+        }/>
+        <Card step={3} heading="Add to Wallet" content={
+          <div className="space-y-5">
+            <label htmlFor="privacy" className="flex flex-row space-x-4 items-center">
+              <input type="checkbox" id="privacy" value="privacy" required />
+              <p>
+                I have read the <a href="/privacy" className="underline">Privacy Policy</a>
+              </p>
+            </label>
+            <input type="hidden" id="payload" name="payload" />
+            <button id="download" type="download" disabled className="shadow-inner focus:outline-none bg-green-600 py-1 px-2 text-white font-semibold rounded-md disabled:bg-gray-400">
+              Add to Wallet
+            </button>
           </div>
         }/>
-        <canvas id="canvas" style={{display: "none"}} />
       </form>
+      <canvas id="canvas" style={{display: "none"}} />
     </div>
   )
 }
diff --git a/components/Page.js b/components/Page.js
index d361138..8710f19 100644
--- a/components/Page.js
+++ b/components/Page.js
@@ -4,7 +4,7 @@ export default Page
 
 function Page({content}) {
   return (
-    <div className="lg:w-1/3 lg:mx-auto flex flex-col min-h-screen justify-center md:px-12">
+    <div className="lg:w-1/3 lg:mx-auto flex flex-col min-h-screen justify-center md:px-12 py-12">
       <Head>
         <title>CovidPass</title>
         <link rel="icon" href="/favicon.png" />
diff --git a/package-lock.json b/package-lock.json
index 2f27dde..fb53f49 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,6 +16,7 @@
         "pdfjs-dist": "^2.5.207",
         "react": "^17.0.2",
         "react-dom": "^17.0.2",
+        "webpack": "^5.0.0",
         "worker-loader": "^3.0.7"
       },
       "devDependencies": {
@@ -2561,7 +2562,6 @@
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-      "peer": true,
       "dependencies": {
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         "@types/json-schema": "*"
@@ -2571,7 +2571,6 @@
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-      "peer": true,
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@@ -2580,8 +2579,7 @@
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-      "peer": true
+      "integrity": "sha512-c5ciR06jK8u9BstrmJyO97m+klJrrhCf9u3rLu3DEAJBirxRqSCvDQoYKmxuYwQI5SZChAWu+tq9oVlGRuzPAg=="
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+      "integrity": "sha512-Q/aVYs/VnPDVYvsCBL/gSgwmfjeCb4LW8+TMrO3cSzJImgv8lxxEPM2JA5jMrivE7LSz3V+PFqtMbls3m1exDA=="
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+      "integrity": "sha512-baT/va95eXiXb2QflSx95QGT5ClzWpGaa8L7JnJbgzoYeaA27FCvuBXU758l+KXWRndEmUXjP0Q5fibhavIn8w=="
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-      "peer": true
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@@ -12479,14 +12387,12 @@
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@@ -12496,14 +12402,12 @@
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@@ -12733,7 +12637,6 @@
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@@ -12763,14 +12666,12 @@
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+          "integrity": "sha512-asabaBSkEKosYKMITunzX177CXxQ4Q8BSSzMTKD+FefUhipQC70gfW5SiUDhYQ3vk8G+81HqQk7Fv9OXwwn9KA=="
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@@ -12782,7 +12683,6 @@
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@@ -12791,8 +12691,7 @@
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diff --git a/package.json b/package.json
index 2c4d7c9..f29b393 100644
--- a/package.json
+++ b/package.json
@@ -18,8 +18,8 @@
     "pdfjs-dist": "^2.5.207",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
-    "worker-loader": "^3.0.7",
-    "webpack": "^5.0.0"
+    "webpack": "^5.0.0",
+    "worker-loader": "^3.0.7"
   },
   "devDependencies": {
     "@svgr/webpack": "^5.5.0",
diff --git a/pages/index.js b/pages/index.js
index a3ad31d..78292cd 100644
--- a/pages/index.js
+++ b/pages/index.js
@@ -12,7 +12,7 @@ export default function Home() {
 
           <Card content={
             <p>
-              Convert any EU Digital Covid Certificate into a pass in your wallet app. On iOS, please use the Safari Browser.
+              Add your EU Digital Covid Certificate to your favorite wallet app. On iOS, please use the Safari Browser.
             </p>
           } />
 
@@ -22,6 +22,7 @@ export default function Home() {
             <nav className="nav flex space-x-5 m-6 flex-row-reverse space-x-reverse text-md font-bold">
               <a href="/privacy" className="hover:underline" >Privacy Policy</a>
               <a href="/imprint" className="hover:underline" >Imprint</a>
+              <a href="https://github.com/" className="hover:underline" >GitHub</a>
             </nav>
           </footer>
         </main>
diff --git a/src/decode.js b/src/decode.js
index f67160f..87280c3 100644
--- a/src/decode.js
+++ b/src/decode.js
@@ -29,8 +29,6 @@ export function toBuffer(ab) {
 }
 
 export function decodeData(data) {
-  console.log(data)
-
   data = data.toString('ASCII')
 
   if (data.startsWith('HC1')) {
@@ -50,7 +48,7 @@ export function decodeData(data) {
     data = zlib.inflate(data)
   }
 
-  data = cbor.decode(typedArrayToBuffer(data));
+  data = cbor.decode(typedArrayToBuffer(data))
 
   if (!Array.isArray(data)) {
     throw new Error('Expecting Array')