#!/usr/bin/env python3
from socket import *
from _thread import start_new_thread
from struct import pack, unpack

# Create a socket.  This doesn't open a port or anything yet
# Parameters:
#   AF_INET is ipv4, AF_INET6
#   SOCK_STREAM means TCP, SOCK_DGRAM would be UDP
our_socket = socket(AF_INET, SOCK_STREAM)
our_socket.connect(("isoptera.lcsc.edu", 5080))    

ADDMON = 1
DELMON = 2

def listen_to_server():
    while True:
        uname_len = unpack(">B", our_socket.recv(1))[0]
        uname = our_socket.recv(uname_len).decode("utf-8")
        result_len = unpack(">H", our_socket.recv(2))[0]
        result = our_socket.recv(result_len).decode("utf-8")
        print("Received Report!  " + uname + ": " + result)

start_new_thread(listen_to_server, ())

while True:
    choice = input("Add or delete a monitor?  ")
    action = 0
    if "add" in choice.lower():
        action = ADDMON
    elif "del" in choice.lower():
        action = DELMON
    else:
        print("Couldn't understand choice")
        continue
    
    uname = input("Enter the username:  ")

    action_len = pack("!BB", action, len(uname))
    our_socket.send(action_len)
    our_socket.send(uname.encode("utf-8"))
    
our_socket.close()