#!/usr/bin/env python

"""Echo server using the asyncio API."""

import asyncio
import sys
from websockets.asyncio.server import serve

DEFAULT_PORT = 8181
DEFAULT_IP = "127.0.0.1"

async def delayed_func():
    await asyncio.sleep(5)
    print("after delay")

async def echo(websocket):
    print("client connected")
    try:
        async for message in websocket:
            if message == "Hello world!":
                asyncio.run(delayed_func())
            await websocket.send(message)
    finally:
        print("client DC")


async def main(ip, port):
    async with serve(echo, ip, port) as server:
        print("serving...")
        await server.serve_forever()


if __name__ == "__main__":
    IP = DEFAULT_IP
    PORT = DEFAULT_PORT
    args = sys.argv[1:]
    for arg_i in range(len(args)):
        if args[arg_i] == "-ip" and arg_i < (len(args)-1):
            arg_i += 1
            IP = args[arg_i]
        if args[arg_i] == "-port" and arg_i < (len(args)-1):
            arg_i += 1
            try:
                PORT = int(args[arg_i])
            except:
                print("Port must be an integer.")
                quit()

    asyncio.run(main(IP, PORT))