from abc import ABC, abstractmethod


class FeatureExtractor(ABC):
    def __init__(self):
        pass

    def __call__(self, input_data, frequency, baseline_data=None, normalization_method=None):
        return self.extract_features(input_data, frequency, baseline_data, normalization_method)

    @abstractmethod
    def extract_features(self, input_data, baseline_data, frequency, normalization_method):
        pass

    @abstractmethod
    def normalize_features(self, features, baseline_features, normalization_method=None):
        pass