can you improve this script keeping it's functionality:
"""Cloud Checker by Cloudzik1337 DC: byid"""

import itertools
import string
import queue
import threading
from time import sleep, time
import traceback
import random
import os
from signal import signal, SIGINT
import requests
import json
from pathlib import Path
from urllib3.exceptions import MaxRetryError
import sys

VERSION = "1.0.5"

class Config:
    """Config class"""
    def __init__(self):
        self.config = None
        self.load_config()

    def load_config(self):
        with open('data/config.json', 'a') as f:
            if os.path.getsize("data/config.json") == 0:
                f.write("{}")
                f.close()
        

    def get(self, key):
        with open('data/config.json', 'r') as f:
            self.config = json.load(f)
        try:
            return self.config[key]
        except KeyError:
            return None
    
    def set(self, key, value):
        with open('data/config.json', 'r') as f:
            self.config = json.load(f)
        self.config[key] = value
        with open('data/config.json', 'w') as f:
            json.dump(self.config, f, indent=4)
        
    def get_all(self):
        with open('data/config.json', 'r') as f:
            self.config = json.load(f)
        return self.config


###############################################################
#                      Close on ctrl+c                        #
###############################################################
@staticmethod
def handler(signal_received, frame):
    # Handle any cleanup here
    print('\nSIGINT or CTRL-C detected. Exiting gracefully')
    exit(0)

signal(SIGINT, handler)







confirmators =  ["y", "yes", "1", "true", "t"]
negators =      ["n", "no", "0", "false", "f"]

os.makedirs("logs", exist_ok=True)
os.makedirs("results", exist_ok=True)  
os.makedirs("data", exist_ok=True)


def create_empty_file(file_path):
    file_path = Path(file_path)
    
    if not file_path.exists():
        file_path.parent.mkdir(parents=True, exist_ok=True)
        with file_path.open("w", encoding='utf-8'):
            pass

def clear_file(file_path):
    file_path = Path(file_path)
    
    if file_path.exists():
        with file_path.open("w", encoding='utf-8'):
            pass


create_empty_file("logs/log.txt")
clear_file("logs/log.txt")


create_empty_file("results/hits.txt")

create_empty_file("data/names_to_check.txt")

create_empty_file("logs/error.txt")
clear_file("logs/error.txt")

create_empty_file("data/proxies.txt")

with Path("data/proxies.txt").open("r", encoding='utf-8') as proxies_file:
    proxies = proxies_file.read().splitlines()





config = Config()
lock = threading.Lock()





if len(proxies) == 0:
    proxies = [None]
proxy_cycle = itertools.cycle(proxies)


#Globals
RPS =       0
REQUESTS =  0
WORKS =     0
TAKEN =     0
DEACTIVATE = False


class Logger:
    """Logger class"""
    def __init__(self, file_name: str):
        """Initiate the class"""
        self.file_name = file_name
        self.file = open(self.file_name, "a")

    def log(self, message: str):
        """Log a message to the file"""
        self.file.write(f"{message}\n")
        self.file.flush()

    def close(self):
        """Close the file"""
        self.file.close()

 


class _Colors:
    """Menu colors"""
    @staticmethod
    def _color_code(code):
        """Static method to format color codes"""
        return f'\033[{code}m'


    ENDC: str =         _color_code(0)
    BOLD: str =         _color_code(1)
    UNDERLINE: str =    _color_code(4)
    BLACK: str =        _color_code(30)
    RED: str =          _color_code(31)
    GREEN: str =        _color_code(32)
    YELLOW: str =       _color_code(33)
    BLUE: str =         _color_code(34)
    MAGENTA: str =      _color_code(35)
    CYAN: str =         _color_code(36)
    WHITE: str =        _color_code(37)
    REDBG: str =        _color_code(41)
    GREENBG: str =      _color_code(42)
    YELLOWBG: str =     _color_code(43)
    BLUEBG: str =       _color_code(44)
    MAGENTABG: str =    _color_code(45)
    CYANBG: str =       _color_code(46)
    WHITEBG: str =      _color_code(47)
    GREY: str =         _color_code(90)


Colors = _Colors()

Logger = Logger("logs/log.txt")


Logger.log(f"CloudChecker started at {time()}")



def clear():
    """Clear the screen"""
    os.system('cls' if os.name=='nt' else 'clear')

clear()

class Pomelo:
    """Cloud Checker"""
    def __init__(self):
        """Initiate the class"""
        self.endpoint = "https://discord.com/api/v9"
        self.headers_post = {"Content-Type": "application/json"}
        self.session = requests.Session()
        self.proxies_not_working = []
        self.remove_proxies = config.get("remove_proxies")
        self.timeout = config.get("timeout")
        if self.timeout is None:
            self.timeout = 30

        Logger.log(f"Timeout set to {self.timeout}")
        Logger.log(f"Remove proxies set to {self.remove_proxies}")
        Logger.log(f"Headers set to {self.headers_post}")

    # def restart_session(self):
    #     """Restart the session"""
    #     requests.Session.close(self.session)
    #     self.session = requests.Session()

    def proxy_err(self, name, proxy, proxy_cycle):
        name = [name, next(proxy_cycle)]
        Logger.log(f"ReadTimeout with proxy {proxy}")
        if self.remove_proxies and proxy != None:
            Logger.log(f"Removing proxy {proxy}")
            self.proxies_not_working.append(proxy)
        
        
    def  check(self, name: list):
        """Check if the name is available"""

    
        # self.restart_session()
        global RPS, REQUESTS, WORKS, TAKEN, DEACTIVATE
        while not DEACTIVATE:
            try:
                try:
                    name, proxy = name
                # only name is passed
                except ValueError:
                    if proxy_cycle is None:
                        proxy = None
                    else:
                        proxy = next(proxy_cycle)
                        if len(self.proxies_not_working) >= len(proxies):
                            Logger.log(f"Exiting because all proxies are not working")
                            
                            DEACTIVATE = True
                            # clear queue
                            Logger.log(f"Clearing queue")
                            while queue.qsize() > 0:
                                queue.get()
                                queue.task_done()
                            Logger.log(f"Queue cleared")
                            sleep(self.timeout+1)
                            print(f"\n{Colors.RED}No proxies left{Colors.ENDC}"*3)
                            
                            
                        while proxy in self.proxies_not_working:
                            proxy = next(proxy_cycle)
                        
                if proxy is not None:
                    proxy = f"http://{str(proxy).strip()}"

                
                # Logger.log(f"Checking {name} with proxy {proxy}")

                r = self.session.post(
                    url=self.endpoint + "/unique-username/username-attempt-unauthed",
                    headers = self.headers_post,
                    json={"username": name},
                    proxies={"http": proxy, "https": proxy},
                    timeout=self.timeout
                ) 
                REQUESTS += 1

                if r.status_code in [200, 201, 204]:
                    if str(r.json()) in ["", None, "{}"]:
                        Logger.log(f"Unexpected response resp = {r.text}")
                        return self.check(name)
                    

                    elif r.json()["taken"]:
                        TAKEN += 1
                        return [False, r.json(), r.status_code]

                    elif not r.json()["taken"]:
                        WORKS += 1
                        return [True, r.json(), r.status_code]

                #rate limited
                elif r.status_code == 429:
                    if proxy is None or proxy == "None" or proxy == "":

                        print("PROXYLESS RATELIMITED SLEEPING")
                        sleep(r.json()["retry_after"])
                        name = [name, next(proxy_cycle)]
                        return self.check(name)
                else:
                    Logger.log(f"Unknown error with request {r.status_code}    |   {r.json()}")

            except requests.exceptions.ProxyError:
                self.proxy_err(name, proxy, proxy_cycle)
                return self.check(name)

            except requests.exceptions.ConnectionError:
                self.proxy_err(name, proxy, proxy_cycle)
                return self.check(name)
            
            except requests.exceptions.ReadTimeout:
                self.proxy_err(name, proxy, proxy_cycle)
                return self.check(name)
            
            except MaxRetryError:
                self.proxy_err(name, proxy, proxy_cycle)
                return self.check(name)



            except:
            # timeout
                with lock:
                    try:
                        exception = traceback.format_exc()
                        Logger.log(f"Unknown error with proxy {proxy}")
                        with open("logs/error.txt", "w") as f:
                            f.write(f"{exception}\n")
                            f.close()
                        sleep(0.3) # rest for 1s
                    except:
                        pass
                return self.check(name)

g = Colors.GREY
r = Colors.RED
x = Colors.ENDC
ASCII = f"""
{g}                      :::!~!!!!!:.
                .xUHWH!! !!?M88WHX:.
                .X*#M@$!!  !X!M$$$$$$WWx:.
            :!!!!!!?H! :!$!$$$$$$$$$$8X:
            !!~  ~:~!! :~!$!#$$$$$$$$$$8X:
            :!~::!H!<   ~.U$X!?R$$$$$$$$MM!
            ~!~!!!!~~ .:XW$$$U!!?$$$$$$RMM!
            !:~~~ .:!M"T#$$$$WX??#MRRMMM!
            ~?WuxiW*`   `"#$$$$8!!!!??!!!
            :X- M$$$$       `"T#$T~!8$WUXU~
            :%`  ~#$$$m:        ~!~ ?$$$$$$
        :!`.-   ~T$$$$8xx.  .xWW- ~""##*"
.....   -~~:<` !    ~?T#$$@@W@*?$$      /`
W$@@M!!! .!~~ !!     .:XUW$W!~ `"~:    :
#"~~`.:x%`!!  !H:   !WM$$$$Ti.: .!WUn+!`
:::~:!!`:X~ .: ?H.!u "$$$B$$$!W:U!T$$M~
.~~   :X@!.-~   ?@WTWo("*$$$W$TH$! `
Wi.~!X$?!-~    : ?$$$B$Wu("**$RM!
$R@i.~~ !     :   ~$$$$$B$$en:``
?MXT@Wx.~    :     ~"##*$$$$M~

                    {r}@{x}  Cloud 2023                  {r}@{x}
                    {r}@{x}  github.com/cloudzik1337     {r}@{x}
                    {r}@{x}  discord.cloudzik.me         {r}@{x}
                    {r}@{x}  Version: {VERSION}              {r}@{x}
        """
clear()
print(ASCII)



# username can contain letters, numbers, and underscores
CHARS = string.ascii_lowercase + string.digits + "_" + '.'

with open("data/names_to_check.txt", "r", encoding='utf-8') as f:
    combos = f.read().splitlines()
    f.close()

with open("data/config.json", "r") as f:
    config_str = f.read()
    f.close()

if len(config_str) == 2 or os.path.getsize("data/config.json") == 0 or config.get("remove_proxies") is None:
    if config.get("webhook") is None:
        ask_webhook = input(f"Send hits to webhook [y/n] {Colors.YELLOW}>>>{Colors.ENDC} ")
        if ask_webhook.lower() in confirmators:
            webhook = input(f"Webhook url {Colors.YELLOW}>>>{Colors.ENDC} ")
            config.set("webhook", webhook)
            print(f"{Colors.MAGENTA}Use <name> to send the name of the hit \nuse <@userid> to mention the user (replace user id with actuall id)\n<time> to send timestamp of the hit\nUse <RPS> to send requests per second\nUse <elapsed> to send elapsed time{Colors.ENDC}")
            message = input(f"Message to send {Colors.YELLOW}>>>{Colors.ENDC} ")
            config.set("message", message)
        else:
            config.set("webhook", None)
    if config.get("remove_proxies") is None:
        ask_proxy = input(f"Use proxies [y/n] {Colors.YELLOW}>>>{Colors.ENDC} ")
        #ask for timeout
        ask_timeout = input(f"Timeout in seconds (Default: 30) {Colors.YELLOW}>>>{Colors.ENDC} ")
        config.set("timeout", int(ask_timeout))
        if ask_proxy.lower() in confirmators:
            ask_proxy = input(f"Rotating proxies ? (login:pass@host:port) [y/n] {Colors.YELLOW}>>>{Colors.ENDC} ")
            if ask_proxy.lower() in confirmators:
                proxy = input(f"Proxy {Colors.YELLOW}>>>{Colors.ENDC} ")
                with open(proxy, "r", encoding='utf-8') as f:
                    proxies = f.read().splitlines()
                    f.close()
                config.set("remove_proxies", False)

            elif ask_proxy.lower() in negators:
                #Print to input proxies to file
                print(f"Please input proxies to data/proxies.txt")
                input("Press enter to continue")
                with open("data/proxies.txt", "r", encoding='utf-8') as proxies:proxies= proxies.read().splitlines()             
                if len(proxies) == 0:
                    proxies = [None]
                    print(f"{Colors.RED}No proxies loaded switching to proxyless{Colors.ENDC}")
                else:
                    print(f"{Colors.MAGENTA}Loaded {len(proxies)} proxies{Colors.ENDC}")
                proxy_cycle = itertools.cycle(proxies)
                ask_remove_bad_proxies = input(f"Remove bad proxies [y/n] {Colors.YELLOW}>>>{Colors.ENDC} ")
                if ask_remove_bad_proxies.lower() in confirmators:
                    config.set("remove_proxies", False)
        elif ask_proxy.lower() in negators:
            #Warn user that proxyless is slow
            print(f"{Colors.YELLOW} It is recommended to use proxies\nHowever you can use proxyless mode but i recommend turning off discord client while using proxyless mode{Colors.ENDC}")
            config.set("remove_proxies", False)
            input("Press enter to continue")
else:
    Logger.log(f"Loaded config {config.get_all()}")



if len(combos) == 0:
    
    combos = itertools.product(CHARS, repeat=int(input("Length of username: ")))
    with open("data/names_to_check.txt", "w", encoding='utf-8') as f:
        
        for i in combos:
            f.write("".join(i))
            f.write("\n")
        f.close()
    
    with open("data/names_to_check.txt", "r", encoding='utf-8') as f:
        combos = f.read().splitlines()
        f.close()
Logger.log(f"Loaded {len(combos)} combos")
longest_name = max([len(name) for name in combos]) 
Logger.log(f"Longest name is {longest_name} characters long")
queue = queue.Queue()
# actually load only random 50k line (Long list will take too long to load)
try:
    combos = random.sample(combos, 50000)
except ValueError:
    pass
for name in combos:
    print(f"[{Colors.YELLOW}+{Colors.ENDC}] Adding username = {Colors.CYAN}{name}{Colors.ENDC}", end="\r")
    name = [name.strip(), next(proxy_cycle)]
    queue.put(name)


CLOUDCHECKER = Pomelo()
Logger.log("CloudChecker successfully initiated")


def worker():
    """Thread worker function"""
    while queue.qsize() > 0:
        
        name = queue.get()
        try:
            x = CLOUDCHECKER.check(name)
            available, json, status_code = x
        except:
            with lock:
                exception = traceback.format_exc()
                with open("logs/error.txt", "a", encoding='utf-8') as f:
                    f.write(f"{exception}\nreturned={x}")
                    f.close()
            available, json, status_code = "ERROR", None, None
        name, proxy = name

        proxy_formated = str(proxy[:10]+'*'*10) if proxy else 'Proxyless'

        with lock:

            if available is True:
                print(f"[{Colors.GREEN}+{Colors.ENDC}] Available  : {Colors.CYAN}{name}{Colors.ENDC}, {' '*(longest_name-len(name))}RPS : {Colors.CYAN}{RPS} / s{Colors.ENDC},  resp : {Colors.CYAN}{json}{Colors.ENDC}, proxy : {Colors.CYAN}{proxy_formated}{Colors.ENDC}")
                
                with open("results/hits.txt", "a", encoding='utf-8') as f:
                    f.write(name)
                    f.write("\n")
                    f.close()

            elif available == "RATELIMITED":
                
                print(f"[{Colors.YELLOW}?{Colors.ENDC}] TIMEOUT    : {Colors.CYAN}{json}{Colors.ENDC}, {' '*(20-int(len(str(json))))}RPS : {Colors.CYAN}{RPS} / s{Colors.ENDC},  resp : {Colors.CYAN}{json}{Colors.ENDC},{' '*(18-int(len(str(json)))-1)}proxy : {Colors.CYAN}{proxy_formated}{Colors.ENDC}")
            
            elif available == "ERROR":
               
                with open("logs/error.txt", "a", encoding='utf-8') as f:
                    f.write(f"{name, json, status_code}\n")
            
            else:
                print(f"[{Colors.RED}-{Colors.ENDC}]   Taken    : {Colors.CYAN}{name}{Colors.ENDC}, {' '*(longest_name-len(name))}RPS : {Colors.CYAN}{RPS} / s{Colors.ENDC},  resp : {Colors.CYAN}{json}{Colors.ENDC},  proxy : {Colors.CYAN}{proxy_formated}{Colors.ENDC}")
       
        queue.task_done()                



def RPS_CALCULATOR():
    """Calculate RPS (Requests per second)"""
    global RPS
    Logger.log("Started RPS calculator thread")
    while True:
        RPS_BEFORE = REQUESTS
        sleep(1)
        RPS = REQUESTS - RPS_BEFORE

start_time = time()        

def TITLE_SPINNER():
    Logger.log("Started title spinner thread")
    """Fix for windows 11 console"""
    TITLE = ["CloudChecker", "Avaible : {WORKS}", "Taken : {TAKEN}", "Requests : {REQUESTS}", "RPS : {RPS}", "Elapsed : {ELAPSED}s"]
    while True:
        for i in TITLE:
            edited = i          
            for _ in range(50):
                edited = i.format(WORKS=WORKS, TAKEN=TAKEN, REQUESTS=REQUESTS, RPS=RPS, ELAPSED=round(time()-start_time))
                os.system(f'title {edited}')
                sleep(0.01)
            sleep(1)

def WEBHOOK_PROCESSOR():
    Logger.log("Started webhook processor thread")
    """Process webhook
    Note: this function is terrible and needs to be rewritten but it works so i dont care"""
    webhook = config.get("webhook")
    message = config.get("message")
    start_time = time()  # Record the start time

    def return_diff(old, new):
        """Return the difference between two lists"""
        return list(set(new) - set(old))

    names = []
    last_send_time = time()  # Initialize the last send time

    with open("results/hits.txt", "r", encoding='utf-8') as f:
            names = f.read().splitlines()
    
    while True:
        old_names = names
        last_send_time = 0
        with open("results/hits.txt", "r", encoding='utf-8') as f:
            names = f.read().splitlines()
        
        names_diff = return_diff(old_names, names)
        

        if len(names_diff) > 1 and last_send_time-time() < 5: #if we get hits frequently and user is not scaning for super rare names we switch to batch mode
            # wait until atleast 10 to send
            old_names = names
            old_diff = names_diff
            inloop_start = time()
            
            new_names = []

            while len(names_diff) < 10 - len(names_diff):
                # calculate if in loop for more than 10 seconds
                with open("results/hits.txt", "r", encoding='utf-8') as f:
                    names = f.read().splitlines()

                names_diff = return_diff(old_names, names)

                for name in names_diff:
                    
                    if name not in str(new_names):
                        
                        new_name = name + ":!#:!#" + str(round(time()))
                        new_names.append(new_name)

                if time() - inloop_start > 10:
                    break

                sleep(0.3)

            # Extend names_diff with the new names
          
            names_diff.extend(new_names)


            payload = []
            #names_diff reversed so the oldest hits are sent first
            for name in names_diff[::-1]:
                current_time = time()
                hittime = round(current_time)
                
                if ":!#:!#" in name:
                    name, hittime = name.split(":!#:!#")
                    
                hittime = f'<t:{hittime}:T>'

                msg = message.replace("<name>", name).replace("<time>", str(hittime)).replace("<elapsed>", str(round(current_time - start_time))).replace("<RPS>", str(RPS))
                payload.append(
                    msg
                )
            
            json = {"content": "\n".join(payload), 'username': 'CloudChecker', 'avatar_url': 'https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Burning_Yellow_Sunset.jpg/1280px-Burning_Yellow_Sunset.jpg'}
            
            x = CLOUDCHECKER.session.post(
                url=webhook,
                json=json
            )
            
            # Rate limit
            if x.status_code == 429:
                sleep(x.json()["retry_after"])

            # Update the last send time after sending the batch
            last_send_time = time()
            sleep(0.5)  # Sleep for 0.5 seconds between batches
        elif len(names_diff) == 1:
            name = names_diff[0]
            current_time = time()
            hittime = f'<t:{round(current_time)}:T>'
            json = {"content": message.replace("<name>", name).replace("<time>", str(hittime)).replace("<elapsed>", str(round(current_time - start_time))).replace("<RPS>", str(RPS)), 'username': 'CloudChecker', 'avatar_url': 'https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Burning_Yellow_Sunset.jpg/1280px-Burning_Yellow_Sunset.jpg'}
            x = CLOUDCHECKER.session.post(
                url=webhook,
                json=json
            )
            if x.status_code == 429:
                sleep(x.json()["retry_after"])


        sleep(1)

threading.Thread(target=RPS_CALCULATOR, daemon=True).start()

# Start the title spinner only if the os is windows
if os.name == "nt":
    threading.Thread(target=TITLE_SPINNER, daemon=True).start()

if config.get("webhook") is not None:
    threading.Thread(target=WEBHOOK_PROCESSOR, daemon=True).start()

clear()
print(ASCII)

print(f"[{Colors.YELLOW}+{Colors.ENDC}] Loaded {Colors.CYAN}{len(combos)}{Colors.ENDC} combos")
ask = input(f"How many threads {Colors.YELLOW}>>>{Colors.ENDC} ")
for _ in range(5):
    print(f"Starting in {5-_}s. with {ask} threads (Ctrl+c Abort)", end="\r")
    sleep(1)
print(f"Starting in 0s. with {ask} threads (Ctrl+c Abort)", end="\r")
ths = []

for i in range(int(ask)):
    t = threading.Thread(target=worker)
    t.daemon = True   
    t.start()
    ths.append(t)
    
Logger.log(f"Started {ask} threads")

queue.join()

print(f"[{Colors.GREEN}+{Colors.ENDC}] Done")
print(f"[{Colors.GREEN}+{Colors.ENDC}] Total requests = {Colors.CYAN}{REQUESTS}{Colors.ENDC} Note: requests wont equal to hits + taken because of sometimes requests are rate limited")
print(f"[{Colors.GREEN}+{Colors.ENDC}] Total valid names = {Colors.CYAN}{WORKS}{Colors.ENDC}")
print(f"[{Colors.GREEN}+{Colors.ENDC}] Total invalid names = {Colors.CYAN}{TAKEN}{Colors.ENDC}")
print(f"[{Colors.GREEN}+{Colors.ENDC}] Total time = {Colors.CYAN}{round(time()-start_time)}{Colors.ENDC} seconds")