"""Helper methods which transform data for the Ripper Feeder."""
from constants.transformers import transformer_dict
from util import transformers


def str_to_transformer(classname):
    """Returns the module name from the passed string"""
    return getattr(transformers, classname)


def transform_audio(asset_list, transformer_type):
    """Transform the audio asset table into a dict to process."""
    transformer_type = str_to_transformer(transformer_dict[transformer_type])

    transformer = transformer_type(asset_list)
    return transformer.transform_audio_assets()


def transform_covers(asset_list, transformer_type):
    """Transform the cover asset table into a dict to process."""
    transformer_type = str_to_transformer(transformer_dict[transformer_type])

    transformer = transformer_type(asset_list)
    return transformer.transform_cover_assets()