index.html

<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Siedle QR-Code Scanner</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            max-width: 500px;
            width: 100%;
            overflow: hidden;
        }
        
        .header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 30px;
            text-align: center;
        }
        
        .header h1 {
            font-size: 24px;
            margin-bottom: 10px;
        }
        
        .header p {
            font-size: 14px;
            opacity: 0.9;
        }
        
        .content {
            padding: 30px;
        }
        
        #qr-reader {
            width: 100%;
            border-radius: 10px;
            overflow: hidden;
            background: #f0f0f0;
            position: relative;
        }
        
        #qr-reader video {
            width: 100%;
            height: auto;
            display: block;
        }
        
        .status {
            margin-top: 20px;
            padding: 15px;
            border-radius: 10px;
            text-align: center;
            font-size: 14px;
        }
        
        .status.info {
            background: #e3f2fd;
            color: #1976d2;
        }
        
        .status.success {
            background: #e8f5e9;
            color: #388e3c;
        }
        
        .status.error {
            background: #ffebee;
            color: #d32f2f;
        }
        
        .status.warning {
            background: #fff3e0;
            color: #f57c00;
        }
        
        .spinner {
            border: 3px solid #f3f3f3;
            border-top: 3px solid #667eea;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 20px auto;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            border: 3px solid #667eea;
            border-radius: 10px;
            pointer-events: none;
        }
        
        .scan-line {
            position: absolute;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, #667eea, transparent);
            animation: scan 2s linear infinite;
        }
        
        @keyframes scan {
            0% { top: 0; }
            100% { top: 100%; }
        }
        
        button {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 25px;
            font-size: 16px;
            cursor: pointer;
            margin-top: 15px;
            width: 100%;
            transition: transform 0.2s;
        }
        
        button:hover {
            transform: translateY(-2px);
        }
        
        button:active {
            transform: translateY(0);
        }
        
        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">
            <h1>🔐 Siedle QR-Code Scanner</h1>
            <p>Scannen Sie Ihren Siedle QR-Code</p>
        </div>
        
        <div class="content">
            <div id="qr-reader"></div>
            <div id="status" class="status info">
                <div class="spinner"></div>
                Kamera wird initialisiert...
            </div>
            <button id="retry-btn" style="display: none;">Erneut versuchen</button>
        </div>
    </div>

    <script src="https://unpkg.com/html5-qrcode@2.3.8/html5-qrcode.min.js"></script>
    <script>
        // URL Parameter auslesen
        const urlParams = new URLSearchParams(window.location.search);
        const configFlowId = urlParams.get('config_flow_id');
        const callbackUrl = urlParams.get('callback_url');
        
        const statusDiv = document.getElementById('status');
        const retryBtn = document.getElementById('retry-btn');
        let html5QrCode = null;
        let isScanning = false;
        
        function updateStatus(message, type = 'info', showSpinner = false) {
            statusDiv.className = `status ${type}`;
            statusDiv.innerHTML = showSpinner 
                ? `<div class="spinner"></div>${message}`
                : message;
        }
        
        function onScanSuccess(decodedText, decodedResult) {
            if (isScanning) {
                return; // Verhindere mehrfache Scans
            }
            isScanning = true;
            
            updateStatus('✅ QR-Code erfolgreich gescannt!', 'success');
            
            // Scanner stoppen
            html5QrCode.stop().then(() => {
                // Zu Home Assistant weiterleiten
                if (callbackUrl && configFlowId) {
                    updateStatus('🔄 Weiterleitung zu Home Assistant...', 'info', true);
                    
                    // URL-encode den QR-Code Inhalt
                    const encodedResult = encodeURIComponent(decodedText);
                    const redirectUrl = `${callbackUrl}?config_flow_id=${configFlowId}&result=${encodedResult}`;
                    
                    setTimeout(() => {
                        window.location.href = redirectUrl;
                    }, 1000);
                } else {
                    updateStatus('❌ Fehlende Parameter: callback_url oder config_flow_id', 'error');
                    retryBtn.style.display = 'block';
                }
            }).catch(err => {
                console.error('Error stopping scanner:', err);
            });
        }
        
        function onScanError(errorMessage) {
            // Ignoriere normale Scan-Fehler (keine QR-Code gefunden)
            // Diese werden bei jedem Frame ausgelöst, wenn kein Code gefunden wird
        }
        
        function startScanner() {
            // Parameter prüfen
            if (!callbackUrl || !configFlowId) {
                updateStatus('❌ Fehler: Fehlende URL-Parameter (callback_url oder config_flow_id)', 'error');
                retryBtn.style.display = 'block';
                return;
            }
            
            updateStatus('📷 Kameraberechtigung wird angefordert...', 'info', true);
            retryBtn.style.display = 'none';
            
            html5QrCode = new Html5Qrcode("qr-reader");
            
            // Kamera-Konfiguration: Bevorzuge rückwärtige Kamera
            const config = {
                fps: 10,
                qrbox: { width: 250, height: 250 },
                aspectRatio: 1.0
            };
            
            // Versuche zuerst die rückwärtige Kamera
            html5QrCode.start(
                { facingMode: "environment" },
                config,
                onScanSuccess,
                onScanError
            ).then(() => {
                updateStatus('📸 Bereit zum Scannen - Halten Sie den QR-Code vor die Kamera', 'info');
                
                // Scan-Animation hinzufügen
                const reader = document.getElementById('qr-reader');
                const overlay = document.createElement('div');
                overlay.className = 'overlay';
                const scanLine = document.createElement('div');
                scanLine.className = 'scan-line';
                overlay.appendChild(scanLine);
                reader.appendChild(overlay);
                
            }).catch(err => {
                console.error('Camera error:', err);
                
                // Fallback: Versuche irgendeine Kamera
                Html5Qrcode.getCameras().then(cameras => {
                    if (cameras && cameras.length > 0) {
                        updateStatus('🔄 Starte Kamera...', 'warning', true);
                        
                        // Verwende die erste verfügbare Kamera
                        html5QrCode.start(
                            cameras[0].id,
                            config,
                            onScanSuccess,
                            onScanError
                        ).then(() => {
                            updateStatus('📸 Bereit zum Scannen - Halten Sie den QR-Code vor die Kamera', 'info');
                            
                            const reader = document.getElementById('qr-reader');
                            const overlay = document.createElement('div');
                            overlay.className = 'overlay';
                            const scanLine = document.createElement('div');
                            scanLine.className = 'scan-line';
                            overlay.appendChild(scanLine);
                            reader.appendChild(overlay);
                            
                        }).catch(err2 => {
                            console.error('Fallback camera error:', err2);
                            updateStatus('❌ Kamera konnte nicht gestartet werden. Bitte erlauben Sie den Kamerazugriff.', 'error');
                            retryBtn.style.display = 'block';
                        });
                    } else {
                        updateStatus('❌ Keine Kamera gefunden', 'error');
                        retryBtn.style.display = 'block';
                    }
                }).catch(err2 => {
                    console.error('Get cameras error:', err2);
                    updateStatus('❌ Fehler beim Zugriff auf die Kamera: ' + err2, 'error');
                    retryBtn.style.display = 'block';
                });
            });
        }
        
        // Retry Button
        retryBtn.addEventListener('click', () => {
            isScanning = false;
            if (html5QrCode) {
                html5QrCode.stop().then(() => {
                    startScanner();
                }).catch(() => {
                    startScanner();
                });
            } else {
                startScanner();
            }
        });
        
        // Automatisch starten wenn Seite geladen ist
        window.addEventListener('load', () => {
            setTimeout(startScanner, 500);
        });
    </script>
</body>
</html>