"""
Interface for API clients
"""
from abc import ABC, abstractmethod


class DataClient(ABC):
    """
    Abstract class for API clients
    """

    @abstractmethod
    def extract(self):
        """
        Extract data from API
        """
        if self.api_url is None:
            raise Exception("No API URL provided")

    def transform(self):
        """
        Placeholder method for future transformation logic.
        """
        self.transformed_data = self.api_response

    @abstractmethod
    def load(self):
        """
        Load data into target model
        """
        raise Exception("No model to transform")

    def run(self) -> None:
        self.extract()
        self.transform()
        self.load()