import asyncio
from collections import defaultdict
from typing import Any, Dict, Union

from aiogram import BaseMiddleware
from aiogram.types import Message


class BulkTextMiddleware(BaseMiddleware):
    def __init__(self, latency: Union[int, float] = 0.1):
        # Initialize latency and album_data dictionary
        self.latency = latency
        self.texts = defaultdict(list)


    async def __call__(self, handler, event: Message, data: Dict[str, Any]) -> Any:
        """
        Main middleware logic.
        """
        #         # If the event has no media_group_id, pass it to the handler immediately
        key = (event.chat.id, event.from_user.id)
        if not event.text:
            return await handler(event, data)

        self.texts[key].append(event)
        total_before = len(self.texts[key])
        #         # Wait for a specified latency period
        await asyncio.sleep(self.latency)
        #
        #         # Check the total number of messages after the latency
        total_after = len(self.texts[key])
        #
        #         # If new messages were added during the latency, exit
        if total_before != total_after:
            return
        #
        #         # Sort the album messages by message_id and add to data
        msg_texts = self.texts[key]
        msg_texts.sort(key=lambda x: x.message_id)
        data["texts"] = ''.join([msg.text for msg in msg_texts])
        #
        #         Remove the media group from tracking to free up memory
        del self.texts[key]
        #         # Call the original event handler
        return await handler(event, data)