string_utils.dart

// string_utils.dart

import 'dart:convert';

String extractJson(String input) {
  int braceCount = 0;
  int startIndex = -1;
  int endIndex = -1;

  for (int i = 0; i < input.length; i++) {
    switch (input[i]) {
      case '{':
        braceCount++;
        startIndex = (startIndex == -1) ? i : startIndex;
        break;
      case '}':
        braceCount--;
        if (braceCount == 0 && startIndex != -1) {
          endIndex = i;
          break;
        }
        break;
      default:
        continue;
    }

    if (endIndex != -1) {
      break;
    }
  }

  if (startIndex != -1 && endIndex != -1) {
    return input.substring(startIndex, endIndex + 1);
  }
  return '';
}

String convertToHHMMSS(int seconds) {
  int hours = seconds ~/ 3600;
  int minutes = (seconds % 3600) ~/ 60;
  int remainingSeconds = seconds % 60;

  String twoDigits(int n) => n.toString().padLeft(2, '0');

  return '${twoDigits(hours)}:${twoDigits(minutes)}:${twoDigits(remainingSeconds)}';
}

String padBase64(String rawBase64) {
  return (rawBase64.length % 4 > 0) ? rawBase64 += List.filled(4 - (rawBase64.length % 4), "_").join("") : rawBase64;
}

String decodeBase64(String data) {
  return utf8.decode(base64.decode(padBase64(data)));
}

String tryDecodingText(String text) {
  try {
    return utf8.decode(text.toString().codeUnits);
  } catch (e) {
    return text;
  }
}