from .chains.ielts import IELTS_Chain
from .chains.toefl import TOEFL_Chain
from .chains.general import General_Chain

class EssayEvaluation:
    """
    A class that provides methods for evaluating essays based on different evaluation types.
    """

    @staticmethod
    def evaluate(type, essay_topic, essay_text):
        """
        Evaluates an essay based on the specified type.

        Args:
            type (str): The type of evaluation to perform. Possible values are "IELTS", "TOEFL", or "General".
            essay_topic (str): The topic of the essay.
            essay_text (str): The text of the essay.

        Returns:
            str: The evaluation result.

        Raises:
            None
        """
        if type == "IELTS":
            result = EssayEvaluation.evaluate_ielts(essay_topic, essay_text)
        elif type == "TOEFL":
            result = EssayEvaluation.evaluate_toefl(essay_topic, essay_text)
        elif type == "General":
            result = EssayEvaluation.evaluate_general(essay_topic, essay_text)
        else:
            result = "Invalid type selected."
        return result
    
    @staticmethod
    def evaluate_ielts(essay_topic, essay_text):
        """
        Evaluates an essay for IELTS.

        Args:
            essay_topic (str): The topic of the essay.
            essay_text (str): The text of the essay.

        Returns:
            str: The evaluation result.

        Raises:
            None
        """
        return IELTS_Chain().invoke(essay_topic, essay_text)

    @staticmethod
    def evaluate_toefl(essay_topic, essay_text):
        """
        Evaluates an essay for TOEFL.

        Args:
            essay_topic (str): The topic of the essay.
            essay_text (str): The text of the essay.

        Returns:
            str: The evaluation result.

        Raises:
            None
        """
        return TOEFL_Chain().invoke(essay_topic, essay_text)
    
    @staticmethod
    def evaluate_general(essay_topic, essay_text):
        """
        Evaluates an essay using a general evaluation method.

        Args:
            essay_topic (str): The topic of the essay.
            essay_text (str): The text of the essay.

        Returns:
            str: The evaluation result.

        Raises:
            None
        """
        return General_Chain().invoke(essay_topic, essay_text)