from __future__ import annotations

import time
from collections import OrderedDict

MAX_ENTRIES = 10000
TTL_SECONDS = 300


class PddMessageDeduplicator:
    def __init__(self, max_entries: int = MAX_ENTRIES, ttl: int = TTL_SECONDS):
        self._store: OrderedDict[str, float] = OrderedDict()
        self._max = max_entries
        self._ttl = ttl

    def is_duplicate(self, msg_id: str) -> bool:
        self._evict_expired()
        if msg_id in self._store:
            return True
        self._store[msg_id] = time.time()
        self._evict_oldest()
        return False

    def _evict_expired(self) -> None:
        now = time.time()
        expired = [k for k, ts in self._store.items() if now - ts > self._ttl]
        for k in expired:
            self._store.pop(k, None)

    def _evict_oldest(self) -> None:
        while len(self._store) > self._max:
            self._store.popitem(last=False)

    def reset(self) -> None:
        self._store.clear()