"""client."""
from socket import *
from threading import *
import tkinter



def push_data(event=None):

    New_msg = MY_New_msg.get()
    MY_New_msg.set("")
    client_socket.push_data(bytes(New_msg, "utf8"))
    if New_msg == "{exit}":
        client_socket.close()
        tkinter_GUI.quit()


 def get_data():
    while True:
        try:
            New_msg = client_socket.recv(BUFSIZ).decode("utf8")
            New_msg_list.insert(tkinter.END, New_msg)
        except OSError:
            break


def when_close(event=None):

    MY_New_msg.set("{exit}")
    push_data()


tkinter_GUI = tkinter.Tk()
tkinter_GUI.title("CS201")

messages_frame = tkinter.Frame(tkinter_GUI)
MY_New_msg = tkinter.StringVar()
MY_New_msg.set("Name")
scrollbar = tkinter.Scrollbar(messages_frame)

New_msg_list = tkinter.Listbox(messages_frame, height=15, width=50, yscrollcommand=scrollbar.set)
scrollbar.pack(side=tkinter.RIGHT, fill=tkinter.Y)
New_msg_list.pack(side=tkinter.LEFT, fill=tkinter.BOTH)
New_msg_list.pack()
messages_frame.pack()

entry_field = tkinter.Entry(tkinter_GUI, textvariable=MY_New_msg)
entry_field.bind("<Return>", push_data)
entry_field.pack()
push_data_button = tkinter.Button(tkinter_GUI, text="push_data", command=push_data)
push_data_button.pack()
tkinter_GUI.protocol("WM_DELETE_WINDOW", when_close)

HOST = input('Enter host: ')
PORT = input('Enter port: ')
if not PORT:
    PORT = 33000
else:
    PORT = int(PORT)
BUFSIZ = 1024
ADDR = (HOST, PORT)
client_socket = socket(AF_INET, SOCK_STREAM)
client_socket.connect(ADDR)

get_data_thread = Thread(target=get_data)
get_data_thread.start()
tkinter.mainloop()