56 lines
2 KiB
Python
56 lines
2 KiB
Python
import json
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from typing import Dict, List
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from fastapi import WebSocket, Depends, WebSocketDisconnect
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from pydantic import parse_obj_as
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from app.users.chat.dao import ChatDAO
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from app.users.auth import validate_user_access_to_chat
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from app.users.chat.shemas import SMessageSchema, SMessage
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from app.users.models import Users
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from app.users.chat.router import router
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class ConnectionManager(WebSocket):
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def __init__(self):
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self.active_connections: dict[int, list[WebSocket]] = {}
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async def connect(self, chat_id: int, websocket: WebSocket):
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await websocket.accept()
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if chat_id not in self.active_connections:
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self.active_connections[chat_id] = []
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self.active_connections[chat_id].append(websocket)
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def disconnect(self, chat_id: int, websocket: WebSocket):
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self.active_connections[chat_id].remove(websocket)
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async def broadcast(self, user_id: int, chat_id: int, message: str):
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new_message = await self.add_message_to_database(user_id=user_id, chat_id=chat_id, message=message)
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new_message = dict(new_message)
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new_message['created_at'] = new_message['created_at'].isoformat()
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for websocket in self.active_connections[chat_id]:
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await websocket.send_json(new_message)
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@staticmethod
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async def add_message_to_database(user_id: int, chat_id: int, message: str):
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result = await ChatDAO.send_message(user_id=user_id, chat_id=chat_id, message=message)
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new_message = await ChatDAO.get_message_by_id(message_id=result)
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return new_message
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manager = ConnectionManager()
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@router.websocket("/ws/{chat_id}")
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async def websocket_endpoint(chat_id: int, user_id: int, websocket: WebSocket):
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await validate_user_access_to_chat(user_id=user_id, chat_id=chat_id)
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await manager.connect(chat_id, websocket)
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try:
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while True:
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data = await websocket.receive_text()
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await manager.broadcast(user_id=user_id, chat_id=chat_id, message=data)
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except WebSocketDisconnect:
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manager.disconnect(chat_id, websocket)
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