import uinterface, gc, rgb, usocket, uselect, wifi, utime

uinterface.connect_wifi()
wifi.wait()

tekst = ""
finished = True

def showchar(c):
    global tekst
    global finished
    if finished:
        print("Ready for new input")
        rgb.clear()
        tekst = "" 
        finished = False
    
    for char in c:
        if (ord(char) < 126 ) and (ord(char) > 31 ):
            tekst += char
        if ord(char) == 10:
            finished = True
            print("Text received: " + tekst)
            rgb.scrolltext(tekst,(255,255,255),(0,0))

sta = wifi._STA_IF
ip = sta.ifconfig()[0]
print("IP: " + ip)

addr = usocket.getaddrinfo("0.0.0.0",1234)[0][-1]
sock = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM, usocket.IPPROTO_TCP)
sock.bind(addr)

sock.listen(1)
sock.settimeout(None)

poll = uselect.poll()
rgb.clear()
rgb.scrolltext("Connect to: "+ip+":1234",(0,255,192),(0,0))

while True:
    client, remote_addr = sock.accept()
    client.settimeout(None)

    poll.register(client, uselect.POLLIN)

    try:
        while True:
            utime.sleep(0.001)
            res = poll.poll(750)

            if res:
                data = client.read(1).decode("utf-8")
                if len(data) <= 0:
                    break
                showchar(data)
                gc.collect()

    except Exception as err:
        print(err)
    finally:
        poll.unregister(client)
        client.close()
        client = None

sock.close()