import time
from pqai_agent.toolkit.hot_topic_toolkit import HotTopicToolkit

class HotTopicClient:
    def __init__(self):
        self._cache = None
        self._cache_time = 0
        self._cache_ttl = 300  # 5分钟
        self._toolkit = HotTopicToolkit()

    def get_hot_topics(self):
        now = time.time()
        if self._cache and (now - self._cache_time) < self._cache_ttl:
            return self._cache
        topics = self._toolkit.get_hot_topics()
        self._cache = topics
        self._cache_time = now
        return topics

# 全局可用实例
hot_topic_client = HotTopicClient()