import json
import asyncio
import sys, time
from quart import Quart, websocket

peer_list = {}
TRANSFERRED_DATA = 0

app = Quart(__name__)

def get_var_size(var):
    return sys.getsizeof(var) / (1024 * 1024)

@app.route("/")
async def retmain():
    return f"Ready to relay\n"

@app.websocket("/ws")
async def handle_websockets():
    global TRANSFERRED_DATA
    peer_group_id = None
    while True:
        try:
            message = await websocket.receive()
            msg = json.loads(message)
            if "peer_group_id" in msg:
                peer_group_id = msg["peer_group_id"]
                if peer_group_id not in peer_list:
                    peer_list[peer_group_id] = set()
                peer_list[peer_group_id].add(websocket._get_current_object())
            for peer in peer_list[peer_group_id]:
                if peer != websocket._get_current_object():
                    await peer.send(message)
                    TRANSFERRED_DATA = round(TRANSFERRED_DATA + get_var_size(message))
        except asyncio.exceptions.CancelledError:
            peer_list[peer_group_id].remove(websocket._get_current_object())
            if len(peer_list[peer_group_id]) < 1:
                peer_list.pop(peer_group_id)

@app.route("/stats")
async def return_stats():
    process_start_time = time.process_time()
    current_time = time.time()
    uptime = current_time - process_start_time
    uptime_str = time.strftime("%H:%M:%S", time.gmtime(uptime))
    peers_connected = 0
    for p in peer_list.values():
        peers_connected += len(p)
    resp = f"<p><b>Uptime: </b>{uptime_str}</p><p><b>Peers: </b>{peers_connected}</p><p><b>Transferred: </b>{TRANSFERRED_DATA} MB</p>"
    return resp

app.run()