readStringLocally method

Future<String?> readStringLocally()

Reads the saved JSON string from local storage.

Returns:

• JSON string if file exists
• null if file does not exist

Implementation

Future<String?> readStringLocally() async {
  final file = File('local_data.txt');

  // If no saved state exists, return null (first-time run)
  if (!await file.exists()) {
    debugPrint('No saved data found.');
    return null;
  }

  // Read entire file contents
  final contents = await file.readAsString();
  return contents;
}