from fastapi import WebSocket
import json
from typing import List

# WebSocket connection manager
class ConnectionManager:
    def __init__(self):
        self.active_connections: List[WebSocket] = []

    async def connect(self, websocket: WebSocket):
        await websocket.accept()
        self.active_connections.append(websocket)

    def disconnect(self, websocket: WebSocket):
        self.active_connections.remove(websocket)

    async def send_personal_message(self, message: str, websocket: WebSocket):
        await websocket.send_text(message)

    async def broadcast(self, message: dict):
        for connection in self.active_connections:
            try:
                await connection.send_text(json.dumps(message, ensure_ascii=False))
            except:
                # Remove disconnected connections
                if connection in self.active_connections:
                    self.active_connections.remove(connection)

manager = ConnectionManager()