from typing import Optional
from managers.queue.base import ChatQueueBase
from managers.queue.deque_queue import DequeQueue

from api.chat.chat_api import ChatAPI


class ChatManager:
    def __init__(self, queue_type: str = "deque", **kwargs):
        self.queue: ChatQueueBase = self._create_queue(queue_type, **kwargs)

    def _create_queue(self, queue_type: str, **kwargs) -> ChatQueueBase:
        queue_types = {
            "deque": DequeQueue,
        }

        if queue_type not in queue_types:
            raise ValueError(f"Unsupported queue type: {queue_type}")

        return queue_types[queue_type](**kwargs)

    async def add_chat(self, api_key: str):
        """添加一个新的chat实例到队列"""
        await self.queue.add(api_key)

    async def get_chat(self) -> Optional[ChatAPI]:
        """获取队列中的下一个chat实例"""
        return await self.queue.get()

    async def length(self) -> int:
        """获取队列长度"""
        return await self.queue.length()