from __future__ import annotations

import time
from collections import OrderedDict


class TelegramDeduplicator:
    def __init__(self, max_size: int = 10000, ttl_seconds: int = 25560):
        self._cache: OrderedDict[str, float] = OrderedDict()
        self._max_size = max_size
        self._ttl_seconds = ttl_seconds

    def is_duplicate(self, key: str) -> bool:
        if not key:
            return False

        now = time.monotonic()
        self._evict_expired(now)

        if key in self._cache:
            return True

        self._cache[key] = now
        while len(self._cache) > self._max_size:
            self._cache.popitem(last=False)

        return False

    def mark_seen(self, key: str) -> None:
        if not key:
            return
        now = time.monotonic()
        self._evict_expired(now)
        self._cache[key] = now
        while len(self._cache) > self._max_size:
            self._cache.popitem(last=False)

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

    @property
    def ttl_seconds(self) -> int:
        return self._ttl_seconds

    @property
    def max_entries(self) -> int:
        return self._max_size

    def _evict_expired(self, now: float) -> None:
        expired = [k for k, v in self._cache.items() if now - v > self._ttl_seconds]
        for k in expired:
            del self._cache[k]