client.py

import socket
import threading
import tkinter
import tkinter.scrolled
from tkinter import simpledialog

HOST = "0.0.0.0"
PORT = 65535

class Client():

     def __init__(self, host, port):

          self.sock = socket.socket(socket.AD_INET, socket.SOCK_STREAM)
          self.sock.connent((host, port))

          mag = tkinter.Tk()
          msg.withdraw()

          self.nickname = simpledialog.askstring("Nickname", "Please choose a nickname", parent=msg)

          self.gui_done = False
          self.running = True

          gui_thread = threading.Thread(target=self.gui_loop)
          receive_thread = threading.Thread(target=self.receive)

          gui_thread.start()
          receive_thread.start()

     def gui_loop(self):
       self.win = tkinter.Tk()
       self.win.configure(bg="lightgray")

       self.chat_label = tkinter.Label(self.win, text="Chat:", bg="lightgray")
       self.chat_label.config(font=("Arial", 12))
       self.chat_label.pack(padx=20, pady=5)

       self.text_area = tkinter.scrolledtext.ScrolledText(self.win)
       self.text_area.config(font=("Arial", 12))
       self.text_area.pack(padx=20, pady=5)

       self.msg_label = tkinter.Label(self.win, text="Message:", bg="lightgray")
       self.msg_label.config(font=("Arial", 12))
       self.msg_label.pack(padx=20, pady=5)

       self.input_area = tkinter.Text(self.win, height=3)
       self.input_area.pack(padx=20, pady=5)

       self.send_button = tkinter.Button(self.win, text="Send", command=self.write)

       self.send_button.config(font=("Arial", 12))
       self.send_button.pack(padx=20, pady=5)

       self.gui_done = True

       self.win.protocol("WM_DELETE_WINDOW", self.stop)

       self.win.mainloop()

     def write(self):
       message = f"{self.nickname}: {self.input_area.get('1.0', 'end')}"
       self.sock.send(message.encode('utf-8'))
       self.input_area.delete('1.0', 'end')
      

     def stop(self):
      self.running = False
      self.win.destroy()
      self.sock.close()
      exit(0)

def receive(self):
     while self.running:
          try:
               message = self.sock.recv(1024)
               if message == 'NICK':
                    self.sock.send(self.nickname.encode('utf-8'))     
               else:
                    if self.gui_done:
                         self.text_area.config(state='normal')
                         self.insert('end', message)
                         self.text_area.yview('end')
                         self.text_area.config(state='disabled')
          except ConnentionAbortedError:
               break
          except:
               print("Error")
               self.sock.close()
               break
client = Client(HOST, PORT)