adguard-home-manager/lib/functions/compare_versions.dart

bool compareVersions({
  required String currentVersion, 
  required String newVersion
}) {
  final currentSplit = currentVersion.split('.').map((e) => int.parse(e)).toList();
  final newSplit = newVersion.split('.').map((e) => int.parse(e)).toList();

  if (newSplit[0] > currentSplit[0]) {
    return true;
  }
  else if (newSplit[1] > currentSplit[1]) {
    return true;
  }
  else if (newSplit[2] > currentSplit[2]) {
    return true;
  }   
  else {
    return false;
  }
}

bool compareBetaVersions({
  required String currentVersion, 
  required String newVersion
}) {
  final currentSplit = currentVersion.split('-')[0].split('.').map((e) => int.parse(e)).toList();
  final newSplit = newVersion.split('-')[0].split('.').map((e) => int.parse(e)).toList();

  final currentBeta = int.parse(currentVersion.split('-')[1].replaceAll('b.', ''));
  final newBeta = int.parse(newVersion.split('-')[1].replaceAll('b.', ''));
  
  if (newSplit[0] > currentSplit[0]) {
    return true;
  }
  else if (newSplit[1] > currentSplit[1]) {
    return true;
  }
  else if (newSplit[2] > currentSplit[2]) {
    return true;
  }
  else if (newBeta > currentBeta) {
    return true;
  }
  else {
    return false;
  }
}

bool serverVersionIsAhead({
  required String currentVersion, 
  required String referenceVersion, 
  String? referenceVersionBeta
}) {
  final current = currentVersion.replaceAll('v', '');
  final reference = referenceVersion.replaceAll('v', '');
  final referenceBeta = referenceVersionBeta?.replaceAll('v', '');

  if (current.contains('beta')) {
    if (referenceBeta != null) {
      final currentSplit = current.split('-')[0].split('.').map((e) => int.parse(e)).toList();
      final newSplit = referenceBeta.split('-')[0].split('.').map((e) => int.parse(e)).toList();

      final currentBeta = int.parse(current.split('-')[1].replaceAll('b.', ''));
      final newBeta = int.parse(referenceBeta.split('-')[1].replaceAll('b.', ''));
      
      if (newSplit[0] == currentSplit[0] && newSplit[1] == currentSplit[1] && newSplit[2] == currentSplit[2] && newBeta == currentBeta) {
        return true;
      }
      else if (newSplit[0] < currentSplit[0]) {
        return true;
      }
      else if (newSplit[1] < currentSplit[1]) {
        return true;
      }
      else if (newSplit[2] < currentSplit[2]) {
        return true;
      }
      else if (newBeta < currentBeta) {
        return true;
      }
      else {
        return false;
      }
    }
    else {
      return false;
    }
  }
  else {
    final currentSplit = current.split('.').map((e) => int.parse(e)).toList();
    final newSplit = reference.split('.').map((e) => int.parse(e)).toList();

    if (newSplit[0] == currentSplit[0] && newSplit[1] == currentSplit[1] && newSplit[2] == currentSplit[2]) {
      return true;
    }
    else if (newSplit[0] < currentSplit[0]) {
      return true;
    }
    else if (newSplit[1] < currentSplit[1]) {
      return true;
    }
    else if (newSplit[2] < currentSplit[2]) {
      return true;
    }   
    else {
      return false;
    }
  }
}