// Initialize QuantumPass SDK
const qp = new QuantumPass({
  apiKey: 'your-api-key',
  environment: 'production'
});

// Create authentication session
const session = await qp.createSession({
  authType: 'temporal',
  securityLevel: 'high'
});

// Display temporal QR code
qp.renderTemporalQR('#qr-container', session.sessionId, {
  fps: 20,
  size: 300,
  onFrameChange: (frameNum) => {
    console.log(`Frame ${frameNum} displayed`);
  }
});

// Listen for authentication events
qp.on('authSuccess', (userData) => {
  console.log('Authentication successful!', userData);
  // Handle successful authentication
});

qp.on('authFailed', (error) => {
  console.error('Authentication failed:', error);
});

// Node.js backend example
const express = require('express');
const QuantumPassSDK = require('@quantumpass/node-sdk');

const app = express();
const qp = new QuantumPassSDK({
  secretKey: process.env.QUANTUMPASS_SECRET_KEY
});

// Create session endpoint
app.post('/auth/session', async (req, res) => {
  try {
    const session = await qp.createSession({
      userId: req.body.userId,
      sessionTimeout: 300, // 5 minutes
      requiredFrames: 4
    });
    
    res.json({
      sessionId: session.id,
      qrFrames: session.frames,
      expiresAt: session.expiresAt
    });
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

// Verify authentication endpoint
app.post('/auth/verify', async (req, res) => {
  try {
    const result = await qp.verifyFrames({
      sessionId: req.body.sessionId,
      collectedFrames: req.body.frames,
      biometricData: req.body.biometricHash
    });
    
    if (result.verified) {
      res.json({ 
        success: true, 
        userData: result.userData 
      });
    } else {
      res.status(401).json({ 
        success: false, 
        error: 'Authentication failed' 
      });
    }
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

// React Native mobile app
import { QuantumPassScanner } from '@quantumpass/react-native';
import Biometrics from 'react-native-biometrics';

const AuthScreen = () => {
  const [frames, setFrames] = useState([]);
  
  const handleQRScan = async (qrData) => {
    try {
      // Parse temporal QR frame
      const frame = JSON.parse(qrData);
      
      // Add to collected frames
      const updatedFrames = [...frames, frame];
      setFrames(updatedFrames);
      
      // Check if we have enough frames
      if (updatedFrames.length >= 4) {
        await authenticateWithBiometrics(updatedFrames);
      }
    } catch (error) {
      console.error('QR scan error:', error);
    }
  };
  
  const authenticateWithBiometrics = async (collectedFrames) => {
    try {
      // Verify biometric
      const biometricResult = await Biometrics.simplePrompt({
        promptMessage: 'Authenticate with biometrics',
        requireHardwareBinding: true
      });
      
      if (biometricResult.success) {
        // Send frames to backend for verification
        const response = await fetch('/api/auth/verify', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({
            sessionId: collectedFrames[0].sessionId,
            frames: collectedFrames,
            biometricHash: biometricResult.signature
          })
        });
        
        const result = await response.json();
        
        if (result.success) {
          // Authentication successful
          navigation.navigate('Dashboard');
        }
      }
    } catch (error) {
      console.error('Authentication error:', error);
    }
  };
  
  return (
    
  );
};