"""RateAverages — reusable container for average computation.

Ported from net.i2p.stat.RateAverages.
"""

import threading


class RateAverages:
    """Holds computed averages for a Rate. Thread-local reuse via get_temp()."""

    _thread_local = threading.local()

    def __init__(self) -> None:
        self.average: float = 0.0
        self.current: float = 0.0
        self.last: float = 0.0
        self.total_values: float = 0.0
        self.total_event_count: int = 0

    @classmethod
    def get_temp(cls) -> "RateAverages":
        """Get a thread-local reusable instance."""
        if not hasattr(cls._thread_local, "instance"):
            cls._thread_local.instance = RateAverages()
        return cls._thread_local.instance