initPrefs function

Implementation

Future initPrefs() async {
  prefs = await SharedPreferences.getInstance();

  // Fix for older versions and move the shared_preferences.json file
  var oldPath = (SafePath(Platform.environment['APPDATA']!)
        ..cd('com.bostrot')
        ..cd('WSL Manager'))
      .file('shared_preferences.json');
  if (File(oldPath).existsSync()) {
    var oldContent = File(oldPath).readAsStringSync();
    oldContent = oldContent.substring(1, oldContent.length);

    var newPath = (SafePath(Platform.environment['APPDATA']!)
          ..cd('com.bostrot')
          ..cd('WSL Distro Manager'))
        .file('shared_preferences.json');

    if (File(newPath).existsSync() && File(newPath).readAsStringSync() != '') {
      var newContent = File(newPath).readAsStringSync();
      newContent = newContent.substring(0, newContent.length - 1);
      newContent = '$newContent,$oldContent';
      // Backup old file
      File(newPath).copySync('$newPath.bak');
      File(newPath).deleteSync();
      // Write new content
      File(newPath).writeAsStringSync(newContent, mode: FileMode.writeOnly);
      File(oldPath).copySync('$oldPath.bak');
      File(oldPath).deleteSync();
    }
  }

  initialized = true;
}