import { ocrService } from './ocr-service';

const result = await ocrService.extractTextFromImage(base64Image);

console.log('Extracted NIN:', result.extractedData.nin);
console.log('Full Name:', result.extractedData.fullName);
console.log('Confidence:', result.confidence);
console.log('Raw Text:', result.rawText);

interface OCRResult {
  success: boolean;
  rawText: string;
  confidence: number;  // 0-100
  extractedData: {
    nin?: string;
    surname?: string;
    firstName?: string;
    middleName?: string;
    fullName?: string;
    dateOfBirth?: string;
    gender?: string;
    height?: string;
    expiryDate?: string;
  };
  fraudIndicators: string[];
}

import { idCardValidator } from './id-card-validator';

// Validate single side
const result = await idCardValidator.validateIDCard(base64Image, 'front');

if (result.fraudDetected) {
  console.log('Fraud indicators:', result.fraudIndicators);
}

// Validate both sides with cross-checking
const validation = await idCardValidator.validateBothSides(frontImage, backImage);

if (!validation.crossValidation.consistent) {
  console.log('Issues:', validation.crossValidation.issues);
}

const SUSPICIOUS_PATTERNS = [
  'photoshop',
  'edited',
  'sample',
  'template',
  'test',
  'demo',
  'fake',
  'copy'
];

interface CrossValidation {
  consistent: boolean;
  issues: string[];
  frontConfidence: number;
  backConfidence: number;
  nameMatch: boolean;
  idMatch: boolean;
}

// ocr-service.ts
const ocrConfig = {
  lang: 'eng',
  oem: 1,  // LSTM only
  psm: 3,  // Fully automatic page segmentation
};

// Handle validation errors gracefully
try {
  const result = await idCardValidator.validateIDCard(image, 'front');
  
  if (!result.success) {
    return {
      success: false,
      userMessage: 'Could not validate your ID. Please try again.'
    };
  }
  
  if (result.fraudDetected) {
    return {
      success: false,
      userMessage: `Document issues: ${result.fraudIndicators.join(', ')}`,
      requiresResubmission: true
    };
  }
  
  // Proceed with upload
} catch (error) {
  logger.error('KYC validation failed', { error });
  return {
    success: false,
    userMessage: 'Validation failed. Please try again later.'
  };
}

// s3-uploader.ts
const uploadResult = await s3Uploader.uploadKYCDocument({
  userId: context.userId,
  side: 'front',
  image: base64Image,
  extractedData: ocrResult.extractedData
});

// Returns: s3://olive-kyc-documents/kyc/user123/front_2024-01-15.jpg

const url = await s3Uploader.getPresignedUrl(s3Uri, 3600); // 1 hour