extractDigitalNINslip static method

Implementation

static IDCardInfo extractDigitalNINslip(List<String> lines) {
  String? idNumber;
  String? firstName;
  String? lastName;
  String? middleName;
  String? dob;
  String? extractedDetails;

  // VOTER'S CARD LOGIC
  for (final line in lines) {
    if (extractedDetails == null){
      extractedDetails = line;
    }else{
      extractedDetails += " ***videx*** $line";
    }
  }

  for (int i = 0; i < lines.length; i++) {
    final upper = lines[i].toUpperCase();
    if (upper.contains('SURNAME/NOM')) {
      if (i + 1 < lines.length) lastName = lines[i + 1].trim();
    } else if (upper.contains('GIVEN NAMES/PRÉNOMS')) {
      if (i + 1 < lines.length) {
        final nameLine = lines[i+1].trim();
        final parts = nameLine.split(RegExp(r'[ ,]+'));
        firstName = parts.isNotEmpty ? parts[0] : null;
        if (parts.length > 1) middleName = parts.sublist(1).join(' ').trim();
      }
    } else if (upper.contains('DATE OF BIRTH')) {
      if (i + 1 < lines.length) {
        final dobLine = lines[i+1];
        final dobRegex = RegExp(r'(\d{1,2})\s+([A-Z]{3})\s+(\d{4})', caseSensitive: false);
        final match = dobRegex.firstMatch(dobLine.toUpperCase());
        if (match != null) {
          String day = match.group(1)!.padLeft(2, '0');
          String monthStr = match.group(2)!;
          String year = match.group(3)!;
          final months = {
            'JAN': '01', 'FEB': '02', 'MAR': '03', 'APR': '04', 'MAY': '05', 'JUN': '06',
            'JUL': '07', 'AUG': '08', 'SEP': '09', 'OCT': '10', 'NOV': '11', 'DEC': '12',
          };
          String? month = months[monthStr];
          if (month != null) {
            dob = '$day-$month-$year';
          }
        }
      }
    } else if (RegExp(r'^\d{4}\s+\d{3}\s+\d{4}$').hasMatch(upper)) {
      idNumber = upper.replaceAll(' ', '');
    }
  }
  return IDCardInfo(
      firstName: firstName, lastName: lastName, middleName: middleName, dateOfBirth: dob, idNumber: idNumber, extracteddetails: extractedDetails);
}