class PointsService:
    """Service for calculating points and penalties"""

    STREAK_MULTIPLIERS = {
        0: 0.0,
        1: 0.0,
        2: 0.1,
        3: 0.2,
        4: 0.3,
    }
    MAX_STREAK_MULTIPLIER = 0.4

    DROP_PENALTIES = {
        0: 0,    # First drop is free
        1: 10,
        2: 25,
    }
    MAX_DROP_PENALTY = 50

    def calculate_completion_points(
        self,
        base_points: int,
        current_streak: int
    ) -> tuple[int, int]:
        """
        Calculate points earned for completing a challenge.

        Args:
            base_points: Base points for the challenge
            current_streak: Current streak before this completion

        Returns:
            Tuple of (total_points, streak_bonus)
        """
        multiplier = self.STREAK_MULTIPLIERS.get(
            current_streak,
            self.MAX_STREAK_MULTIPLIER
        )
        bonus = int(base_points * multiplier)
        return base_points + bonus, bonus

    def calculate_drop_penalty(self, consecutive_drops: int) -> int:
        """
        Calculate penalty for dropping a challenge.

        Args:
            consecutive_drops: Number of drops since last completion

        Returns:
            Penalty points to subtract
        """
        return self.DROP_PENALTIES.get(
            consecutive_drops,
            self.MAX_DROP_PENALTY
        )