273 lines
11 KiB
TypeScript
273 lines
11 KiB
TypeScript
import {saveAs} from 'file-saver';
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import React, {FormEvent, useEffect, useRef, useState} from "react";
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import {BrowserQRCodeReader, IScannerControls} from "@zxing/browser";
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import {Result} from "@zxing/library";
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import {useTranslation} from 'next-i18next';
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import Link from 'next/link';
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import Card from "./Card";
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import Alert from "./Alert";
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import Check from './Check';
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import {PayloadBody} from "../src/payload";
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import {getPayloadBodyFromFile, getPayloadBodyFromQR} from "../src/process";
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import {PassData} from "../src/pass";
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import {COLORS} from "../src/colors";
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import Colors from './Colors';
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function Form(): JSX.Element {
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const {t} = useTranslation(['index', 'errors', 'common']);
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// Whether camera is open or not
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const [isCameraOpen, setIsCameraOpen] = useState<boolean>(false);
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// Currently selected color
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const [selectedColor, setSelectedColor] = useState<COLORS>(COLORS.WHITE);
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// Global camera controls
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const [globalControls, setGlobalControls] = useState<IScannerControls>(undefined);
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// Currently selected QR Code / File. Only one of them is set.
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const [qrCode, setQrCode] = useState<Result>(undefined);
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const [file, setFile] = useState<File>(undefined);
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const [errorMessage, _setErrorMessage] = useState<string>(undefined);
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const [loading, setLoading] = useState<boolean>(false);
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// Check if there is a translation and replace message accordingly
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const setErrorMessage = (message: string) => {
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if (message == undefined) {
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_setErrorMessage(undefined);
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return;
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}
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const translation = t('errors:'.concat(message));
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_setErrorMessage(translation !== message ? translation : message);
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};
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// File Input ref
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const inputFile = useRef<HTMLInputElement>(undefined)
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// Add event listener to listen for file change events
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useEffect(() => {
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if (inputFile && inputFile.current) {
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inputFile.current.addEventListener('input', () => {
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let selectedFile = inputFile.current.files[0];
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if (selectedFile !== undefined) {
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setQrCode(undefined);
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setFile(selectedFile);
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}
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});
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}
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}, [inputFile])
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// Show file Dialog
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async function showFileDialog() {
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inputFile.current.click();
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}
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// Hide camera view
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async function hideCameraView() {
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if (globalControls !== undefined) {
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globalControls.stop();
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}
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setIsCameraOpen(false);
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}
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// Show camera view
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async function showCameraView() {
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// Create new QR Code Reader
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const codeReader = new BrowserQRCodeReader();
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// Needs to be called before any camera can be accessed
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let deviceList: MediaDeviceInfo[];
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try {
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deviceList = await BrowserQRCodeReader.listVideoInputDevices();
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} catch (e) {
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setErrorMessage('noCameraAccess');
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return;
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}
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// Check if camera device is present
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if (deviceList.length == 0) {
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setErrorMessage("noCameraFound");
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return;
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}
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// Get preview Element to show camera stream
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const previewElem: HTMLVideoElement = document.querySelector('#cameraPreview');
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// Set Global controls
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setGlobalControls(
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// Start decoding from video device
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await codeReader.decodeFromVideoDevice(undefined,
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previewElem,
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(result, error, controls) => {
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if (result !== undefined) {
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setQrCode(result);
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setFile(undefined);
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controls.stop();
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// Reset
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setGlobalControls(undefined);
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setIsCameraOpen(false);
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}
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if (error !== undefined) {
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setErrorMessage(error.message);
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}
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}
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)
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);
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setIsCameraOpen(true);
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}
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// Add Pass to wallet
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async function addToWallet(event: FormEvent<HTMLFormElement>) {
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event.preventDefault();
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setLoading(true);
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if (navigator.userAgent.match('CriOS')) {
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setErrorMessage('safariSupportOnly');
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setLoading(false);
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return;
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}
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if (!file && !qrCode) {
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setErrorMessage('noFileOrQrCode')
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setLoading(false);
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return;
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}
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const color = selectedColor;
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let payloadBody: PayloadBody;
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try {
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if (file) {
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payloadBody = await getPayloadBodyFromFile(file, color);
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} else {
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payloadBody = await getPayloadBodyFromQR(qrCode, color);
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}
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let pass = await PassData.generatePass(payloadBody);
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const passBlob = new Blob([pass], {type: "application/vnd.apple.pkpass"});
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saveAs(passBlob, 'covid.pkpass');
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setLoading(false);
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} catch (e) {
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setErrorMessage(e.message);
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setLoading(false);
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}
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}
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return (
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<div>
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<form className="space-y-5" id="form" onSubmit={addToWallet}>
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<Card step="1" heading={t('index:selectCertificate')} content={
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<div className="space-y-5">
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<p>{t('index:selectCertificateDescription')}</p>
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<div className="grid grid-cols-1 md:grid-cols-2 gap-5">
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<button
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type="button"
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onClick={isCameraOpen ? hideCameraView : showCameraView}
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className="focus:outline-none h-20 bg-gray-500 hover:bg-gray-700 text-white font-semibold rounded-md">
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{isCameraOpen ? t('index:stopCamera') : t('index:startCamera')}
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</button>
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<button
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type="button"
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onClick={showFileDialog}
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className="focus:outline-none h-20 bg-gray-500 hover:bg-gray-700 text-white font-semibold rounded-md">
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{t('index:openFile')}
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</button>
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</div>
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<video id="cameraPreview"
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className={`${isCameraOpen ? undefined : "hidden"} rounded-md w-full`}/>
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<input type='file'
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id='file'
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accept="application/pdf,image/png,image/jpeg,image/webp,image/gif"
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ref={inputFile}
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style={{display: 'none'}}
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/>
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{(qrCode || file) &&
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<div className="flex items-center space-x-1">
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<svg className="h-4 w-4 text-green-600" fill="none" viewBox="0 0 24 24"
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stroke="currentColor">
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<path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M9 5l7 7-7 7"/>
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</svg>
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<span className="w-full truncate">
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{
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qrCode && t('index:foundQrCode')
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}
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{
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file && file.name
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}
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</span>
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</div>
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}
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</div>
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}/>
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<Card step="2" heading={t('index:pickColor')} content={
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<div className="space-y-5">
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<p>{t('index:pickColorDescription')}</p>
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<div className="relative inline-block w-full">
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<Colors onChange={setSelectedColor} initialValue={selectedColor}/>
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</div>
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</div>
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}/>
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<Card step="3" heading={t('index:addToWallet')} content={
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<div className="space-y-5">
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<p>
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{t('index:dataPrivacyDescription')}
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<Link href="/privacy">
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<a>
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{t('index:privacyPolicy')}
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</a>
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</Link>.
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</p>
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<div>
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<ul className="list-none">
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<Check text={t('createdOnDevice')}/>
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<Check text={t('openSourceTransparent')}/>
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<Check text={t('hostedInEU')}/>
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</ul>
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</div>
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<label htmlFor="privacy" className="flex flex-row space-x-4 items-center pb-2">
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<input type="checkbox" id="privacy" value="privacy" required className="h-5 w-5 outline-none"/>
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<p>
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{t('index:iAcceptThe')}
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<Link href="/privacy">
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<a className="underline">
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{t('index:privacyPolicy')}
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</a>
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</Link>.
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</p>
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</label>
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<div className="flex flex-row items-center justify-start">
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<button id="download" type="submit"
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className="focus:outline-none bg-green-600 py-2 px-3 text-white font-semibold rounded-md disabled:bg-gray-400">
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{t('index:addToWallet')}
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</button>
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<div id="spin" className={loading ? undefined : "hidden"}>
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<svg className="animate-spin h-5 w-5 ml-4" viewBox="0 0 24 24">
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<circle className="opacity-0" cx="12" cy="12" r="10" stroke="currentColor"
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strokeWidth="4"/>
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<path className="opacity-75" fill="currentColor"
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d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"/>
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</svg>
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</div>
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</div>
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</div>
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}/>
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</form>
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<canvas id="canvas" style={{display: "none"}}/>
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{
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errorMessage && <Alert errorMessage={errorMessage} onClose={() => setErrorMessage(undefined)}/>
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}
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</div>
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)
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}
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export default Form; |