from __future__ import annotations

import time
from collections import OrderedDict


class LazadaDedupeStore:
    def __init__(self, max_size: int = 10000, ttl_seconds: int = 3600):
        self._store: OrderedDict[str, float] = OrderedDict()
        self._max_size = max_size
        self._ttl = ttl_seconds

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

        self._evict_expired()

        if message_id in self._store:
            return True

        self._store[message_id] = time.time()
        self._store.move_to_end(message_id)

        while len(self._store) > self._max_size:
            self._store.popitem(last=False)

        return False

    def mark_seen(self, message_id: str) -> None:
        self._store[message_id] = time.time()
        self._store.move_to_end(message_id)
        self._evict_overflow()

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

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

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