import time
import logging

logging.basicConfig(level=logging.INFO)

class SelfEvaluator:
    def __init__(self):
        self.evaluation_log = []

    def evaluate(self, task_output: str):
        quality_score = self.heuristic_score(task_output)
        self.evaluation_log.append({
            "output": task_output,
            "score": quality_score,
            "timestamp": time.time()
        })
        logging.info(f"Self-evaluation completed: Score={quality_score}")
        return quality_score

    def heuristic_score(self, output: str):
        # Simple evaluation heuristic based on length and keyword presence
        if "error" in output.lower():
            return 0.2
        elif len(output) < 20:
            return 0.5
        else:
            return 0.9

    def get_log(self):
        return self.evaluation_log