/**
 * QR System Demonstration Script
 * Shows QR validation, backup code generation, and manual entry flow
 */

import { QRValidator, createQRValidator, getQRErrorMessage, formatBackupCode } from '../src/lib/qr-validator';
import { QRGenerator, createQRGenerator, generateTicketQR, generateQRForFormat, validateQRData } from '../src/lib/qr-generator';

console.log('🎫 Black Canyon Tickets - QR System Demonstration\n');

// Sample ticket data
const sampleTicketData = {
  ticketId: '550e8400-e29b-41d4-a716-446655440000',
  eventId: 'evt_789012345',
  zone: 'GA',
  seat: 'A12',
  expiresInDays: 30
};

console.log('1. Ticket Data Validation');
console.log('=========================');
const validation = validateQRData(sampleTicketData);
console.log(`✅ Valid: ${validation.valid}`);
if (!validation.valid) {
  console.log(`❌ Errors: ${validation.errors.join(', ')}`);
}
console.log();

console.log('2. QR Code Generation');
console.log('====================');
const generator = createQRGenerator();

// Generate QR for different formats
const formats = ['email', 'print', 'thermal', 'wallet'] as const;
for (const format of formats) {
  const { qr, svg } = generateQRForFormat(sampleTicketData, format);
  console.log(`📱 ${format.toUpperCase()} Format:`);
  console.log(`   QR Data: ${qr.qrData.substring(0, 50)}...`);
  console.log(`   Backup Code: ${qr.backupCode}`);
  console.log(`   Format: ${qr.metadata.format}`);
  console.log(`   Generated: ${new Date(qr.metadata.generatedAt).toLocaleString()}`);
  if (qr.metadata.expiresAt) {
    console.log(`   Expires: ${new Date(qr.metadata.expiresAt).toLocaleString()}`);
  }
  console.log();
}

console.log('3. QR Code Validation');
console.log('====================');
const validator = createQRValidator();

// Test different QR formats
const testQRs = [
  // Simple format
  `TICKET_${sampleTicketData.ticketId}`,
  
  // Signed token format (generated)
  generateTicketQR(sampleTicketData).qrData,
  
  // Invalid formats
  'INVALID_QR_CODE',
  'BCT.v2.invalid.signature',
  'TICKET_not-a-uuid'
];

testQRs.forEach((qr, index) => {
  console.log(`Test ${index + 1}: ${qr.substring(0, 40)}${qr.length > 40 ? '...' : ''}`);
  const result = validator.validateQR(qr);
  console.log(`   ✅ Valid: ${result.valid}`);
  console.log(`   📱 Format: ${result.format}`);
  if (result.ticketId) {
    console.log(`   🎫 Ticket ID: ${result.ticketId}`);
  }
  if (result.eventId) {
    console.log(`   🎪 Event ID: ${result.eventId}`);
  }
  if (!result.valid) {
    console.log(`   ❌ Error: ${getQRErrorMessage(result)}`);
  }
  if (result.metadata) {
    if (result.metadata.expiresAt) {
      const expires = new Date(result.metadata.expiresAt * 1000);
      console.log(`   ⏰ Expires: ${expires.toLocaleString()}`);
    }
    if (result.metadata.zone) {
      console.log(`   🏟️  Zone: ${result.metadata.zone}`);
    }
    if (result.metadata.seat) {
      console.log(`   💺 Seat: ${result.metadata.seat}`);
    }
  }
  console.log();
});

console.log('4. Backup Code Validation');
console.log('=========================');
const testBackupCodes = [
  '55440000', // Valid (last 8 chars of ticket ID)
  '1234ABCD', // Valid hex format
  '12345',     // Too short
  '123456789', // Too long
  '1234GHIJ',  // Invalid characters
  ''           // Empty
];

testBackupCodes.forEach((code, index) => {
  console.log(`Test ${index + 1}: "${code}"`);
  const result = validator.validateBackupCode(code);
  console.log(`   ✅ Valid: ${result.valid}`);
  if (result.valid && result.normalizedCode) {
    console.log(`   🔢 Normalized: ${formatBackupCode(result.normalizedCode)}`);
  }
  console.log();
});

console.log('5. Backup Code Generation');
console.log('========================');
const testTicketIds = [
  sampleTicketData.ticketId,
  '123e4567-e89b-12d3-a456-426614174000',
  'invalid-uuid'
];

testTicketIds.forEach((ticketId, index) => {
  console.log(`Test ${index + 1}: ${ticketId}`);
  try {
    const backupCode = generator.generateBackupCode(ticketId);
    console.log(`   🔢 Backup Code: ${formatBackupCode(backupCode)}`);
  } catch (error) {
    console.log(`   ❌ Error: ${error instanceof Error ? error.message : 'Unknown error'}`);
  }
  console.log();
});

console.log('6. QR Format Detection');
console.log('======================');
const mixedQRs = [
  'TICKET_550e8400-e29b-41d4-a716-446655440000',
  'BCT.v2.eyJ0aWQiOiIxMjMiLCJlaWQiOiI0NTYifQ.signature',
  '550e8400-e29b-41d4-a716-446655440000', // Legacy UUID only
  'MANUAL_55440000'
];

mixedQRs.forEach((qr, index) => {
  console.log(`QR ${index + 1}: ${qr}`);
  const ticketId = validator.extractTicketId(qr);
  if (ticketId) {
    console.log(`   🎫 Extracted Ticket ID: ${ticketId}`);
    const backupCode = generator.generateBackupCode(ticketId);
    console.log(`   🔢 Backup Code: ${formatBackupCode(backupCode)}`);
  } else {
    console.log(`   ❌ Could not extract ticket ID`);
  }
  console.log();
});

console.log('7. Production Recommendations');
console.log('=============================');
console.log('✅ Use signed tokens (BCT.v2.{payload}.{signature}) for security');
console.log('✅ Implement proper HMAC-SHA256 signatures in production');
console.log('✅ Rotate signing keys quarterly');
console.log('✅ Use Error Correction Level M (15%) for most use cases');
console.log('✅ Use Error Correction Level H (30%) for thermal printers');
console.log('✅ Include backup codes on all printed tickets');
console.log('✅ Train gate staff on manual entry procedures');
console.log('✅ Test QR codes across different devices and lighting conditions');
console.log('✅ Monitor QR scan success rates and manual entry frequency');
console.log();

console.log('🚀 QR System Demo Complete!');
console.log('Visit /scanner?eventId=test-event-123 to test the scanner interface');
console.log(`Server running at: http://localhost:5174`);
console.log();

export {};