"""

    AUTHOR:

        Khushal P Soonderji

    DATE:

        monday, 23rd Dec., 2024

    OBJECTIVE:

        To provide a SocketIO app for socket-base communication with the front-end.

    REFERENCES:

        01. YouTube: https://www.youtube.com/watch?v=H1eLJMC5oTg&t=3s

    DOWNLOADS:

        N/A

"""


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                   IMPORT                                                      ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# To make sibling directories accessible for imports:
import sys
sys.path.append(".")
sys.path.append("..")

# System-level activities:
import io
import os

# my utils:
from utils_v2.string import json

# To work with SocketIO:
import socketio
from aiohttp import web

# For asynchronous activities:
import asyncio

# for debugging:
from icecream import IceCreamDebugger


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                           MACROS / ONE-TIME INIT                                              ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# --- Nothing Yet


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                VARIABLES                                                      ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# The SocketIo server:
sio = socketio.AsyncServer(cors_allowed_origins = "*")
app = web.Application()
sio.attach(app)

# Debugging:
printer = IceCreamDebugger(prefix = "SocketIO | ", includeContext = True)


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                  FUNCTIONS                                                    ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


@sio.event
async def connect(sid, environ):
    printer(sid)


# ---------------------------------------------------------------------------------------------------------------------


@sio.event
async def disconnect(sid):
    printer(sid)


# ---------------------------------------------------------------------------------------------------------------------


async def init():

    """
    Initialize stuff here.
    :return: ?
    """

    pass


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                               MAIN PROGRAM                                                    ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


if __name__ == "__main__":

    async def main():

        # Start receiving live market data in the background:
        # asyncio.create_task(start_live_feed())

        # Run the web server:
        runner = web.AppRunner(app)
        await runner.setup()
        site = web.TCPSite(runner, "0.0.0.0", 5214)
        printer("Server running.")
        await site.start()

        # Keep the server running:
        while True: await asyncio.sleep(3_600)

    # Let's go:
    asyncio.run(main())