mirror of
https://github.com/kccleoc/seedpgp-web.git
synced 2026-03-07 09:57:50 +08:00
feat(v1.2.0): add QR scanner with camera/upload support
- Add QRScanner component with camera and image upload - Add QR code download button with auto-naming (SeedPGP_DATE_TIME.png) - Split state for backup/restore (separate public/private keys and passwords) - Improve QR generation settings (margin: 4, errorCorrection: M) - Fix Safari camera permissions and Continuity Camera support - Add React timing fix for Html5Qrcode initialization Features: - Camera scanning with live preview - Image file upload scanning - Automatic SEEDPGP1 validation - User-friendly error messages - 512x512px high-quality QR generation
This commit is contained in:
LC mac
224
src/components/QRScanner.tsx
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224
src/components/QRScanner.tsx
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import { useState, useRef } from 'react';
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import { Camera, Upload, X, CheckCircle2, AlertCircle, Info } from 'lucide-react';
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import { Html5Qrcode } from 'html5-qrcode';
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interface QRScannerProps {
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onScanSuccess: (scannedText: string) => void;
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onClose: () => void;
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}
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export default function QRScanner({ onScanSuccess, onClose }: QRScannerProps) {
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const [scanMode, setScanMode] = useState<'camera' | 'file' | null>(null);
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const [scanning, setScanning] = useState(false);
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const [error, setError] = useState<string>('');
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const [success, setSuccess] = useState(false);
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const html5QrCodeRef = useRef<Html5Qrcode | null>(null);
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const fileInputRef = useRef<HTMLInputElement>(null);
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const startCamera = async () => {
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setError('');
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setScanMode('camera');
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setScanning(true);
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// Wait for DOM to render the #qr-reader div
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await new Promise(resolve => setTimeout(resolve, 100));
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try {
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// Check if we're on HTTPS or localhost
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if (window.location.protocol !== 'https:' && !window.location.hostname.includes('localhost')) {
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throw new Error('Camera requires HTTPS or localhost. Use: bun run dev');
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}
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const html5QrCode = new Html5Qrcode('qr-reader');
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html5QrCodeRef.current = html5QrCode;
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await html5QrCode.start(
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{ facingMode: 'environment' },
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{
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fps: 10,
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qrbox: { width: 250, height: 250 },
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aspectRatio: 1.0,
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},
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(decodedText) => {
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if (decodedText.startsWith('SEEDPGP1:')) {
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setSuccess(true);
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onScanSuccess(decodedText);
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stopCamera();
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} else {
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setError('QR code found, but not a valid SEEDPGP1 frame');
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}
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},
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() => {
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// Ignore frequent scanning errors
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}
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);
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} catch (err: any) {
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console.error('Camera error:', err);
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setError(`Camera failed: ${err.message || 'Permission denied or not available'}`);
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setScanning(false);
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setScanMode(null);
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}
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};
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const stopCamera = async () => {
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if (html5QrCodeRef.current) {
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try {
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await html5QrCodeRef.current.stop();
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html5QrCodeRef.current.clear();
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} catch (err) {
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console.error('Error stopping camera:', err);
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}
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html5QrCodeRef.current = null;
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}
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setScanning(false);
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setScanMode(null);
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};
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const handleFileUpload = async (e: React.ChangeEvent<HTMLInputElement>) => {
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const file = e.target.files?.[0];
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if (!file) return;
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setError('');
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setScanMode('file');
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setScanning(true);
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try {
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const html5QrCode = new Html5Qrcode('qr-reader-file');
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// Try scanning with verbose mode
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const decodedText = await html5QrCode.scanFile(file, true);
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if (decodedText.startsWith('SEEDPGP1:')) {
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setSuccess(true);
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onScanSuccess(decodedText);
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html5QrCode.clear();
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} else {
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setError(`Found QR code, but not SEEDPGP format: ${decodedText.substring(0, 30)}...`);
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}
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} catch (err: any) {
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console.error('File scan error:', err);
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// Provide helpful error messages
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if (err.message?.includes('No MultiFormat')) {
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setError('Could not detect QR code in image. Try: 1) Taking a clearer photo, 2) Ensuring good lighting, 3) Screenshot from the Backup tab');
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} else {
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setError(`Scan failed: ${err.message || 'Unknown error'}`);
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}
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} finally {
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setScanning(false);
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// Reset file input so same file can be selected again
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if (fileInputRef.current) {
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fileInputRef.current.value = '';
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}
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}
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};
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const handleClose = async () => {
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await stopCamera();
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onClose();
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};
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return (
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<div className="fixed inset-0 bg-black/60 backdrop-blur-sm z-50 flex items-center justify-center p-4 animate-in fade-in">
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<div className="bg-white rounded-2xl shadow-2xl max-w-md w-full overflow-hidden animate-in zoom-in-95">
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{/* Header */}
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<div className="bg-gradient-to-r from-slate-900 to-slate-800 p-4 text-white flex items-center justify-between">
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<div className="flex items-center gap-2">
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<Camera size={20} />
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<h2 className="font-bold text-lg">Scan QR Code</h2>
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</div>
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<button
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onClick={handleClose}
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className="p-1.5 hover:bg-white/20 rounded-lg transition-colors"
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>
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<X size={20} />
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</button>
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</div>
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{/* Content */}
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<div className="p-6 space-y-4">
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{/* Error Display */}
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{error && (
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<div className="p-3 bg-red-50 border-l-4 border-red-500 rounded-r-lg flex gap-2 text-red-800 text-xs leading-relaxed">
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<AlertCircle size={16} className="shrink-0 mt-0.5" />
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<p>{error}</p>
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</div>
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)}
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{/* Success Display */}
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{success && (
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<div className="p-3 bg-green-50 border-l-4 border-green-500 rounded-r-lg flex gap-2 text-green-800 text-sm">
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<CheckCircle2 size={16} className="shrink-0 mt-0.5" />
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<p>QR code scanned successfully!</p>
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</div>
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)}
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{/* Mode Selection */}
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{!scanMode && (
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<div className="space-y-3">
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<button
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onClick={startCamera}
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className="w-full py-4 bg-gradient-to-r from-blue-600 to-blue-700 text-white rounded-xl font-semibold flex items-center justify-center gap-2 hover:from-blue-700 hover:to-blue-800 transition-all shadow-lg"
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>
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<Camera size={20} />
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Use Camera
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</button>
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<button
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onClick={() => fileInputRef.current?.click()}
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className="w-full py-4 bg-gradient-to-r from-slate-700 to-slate-800 text-white rounded-xl font-semibold flex items-center justify-center gap-2 hover:from-slate-800 hover:to-slate-900 transition-all shadow-lg"
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>
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<Upload size={20} />
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Upload Image
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</button>
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<input
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ref={fileInputRef}
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type="file"
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accept="image/*"
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onChange={handleFileUpload}
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className="hidden"
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/>
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{/* Info Box */}
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<div className="pt-4 border-t border-slate-200">
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<div className="flex gap-2 text-xs text-slate-600 leading-relaxed">
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<Info size={14} className="shrink-0 mt-0.5 text-blue-600" />
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<div>
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<p><strong>Camera:</strong> Requires HTTPS or localhost</p>
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<p className="mt-1"><strong>Upload:</strong> Screenshot QR from Backup tab for testing</p>
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</div>
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</div>
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</div>
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</div>
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)}
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{/* Camera View */}
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{scanMode === 'camera' && scanning && (
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<div className="space-y-3">
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<div id="qr-reader" className="rounded-lg overflow-hidden border-2 border-slate-200"></div>
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<button
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onClick={stopCamera}
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className="w-full py-3 bg-red-600 text-white rounded-lg font-semibold hover:bg-red-700 transition-colors"
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>
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Stop Camera
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</button>
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</div>
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)}
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{/* File Processing View */}
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{scanMode === 'file' && scanning && (
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<div className="py-8 text-center">
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<div className="inline-block animate-spin rounded-full h-8 w-8 border-4 border-slate-200 border-t-blue-600"></div>
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<p className="mt-3 text-sm text-slate-600">Processing image...</p>
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</div>
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)}
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{/* Hidden div for file scanning */}
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<div id="qr-reader-file" className="hidden"></div>
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</div>
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</div>
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</div>
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);
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}
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