from lib.irt.models.three_parameter_logistic import ThreeParameterLogistic

class ItemResponseFunction():
  def __init__(self, irt_model):
    self.model_data = irt_model

  def calculate(self, **kwargs):
    if self.model_data.model == '3PL':
      return ThreeParameterLogistic(self.model_data, kwargs).result()
    else:
      # potentially error out
      return None