PC_Miner.py

#!/usr/bin/env python3
"""
Duino-Coin Official PC Miner v2.7.2 © MIT licensed
https://duinocoin.com
https://github.com/revoxhere/duino-coin
Duino-Coin Team & Community 2019-2021
"""

from time import time, sleep, strptime, ctime
from hashlib import sha1
from socket import socket

from multiprocessing import Lock as thread_lock
from multiprocessing import cpu_count, current_process
from multiprocessing import Process, Manager
from threading import Thread
from datetime import datetime

from os import execl, mkdir, _exit
from subprocess import DEVNULL, Popen, check_call
import pip
import sys
import os
import json

import requests
from pathlib import Path
from re import sub
from random import choice

from signal import SIGINT, signal
from locale import LC_ALL, getdefaultlocale, getlocale, setlocale
from configparser import ConfigParser
configparser = ConfigParser()


def handler(signal_received, frame):
    """
    Nicely handle CTRL+C exit
    """
    if current_process().name == "MainProcess":
        pretty_print(
            get_string("sigint_detected")
            + Style.NORMAL
            + Fore.RESET
            + get_string("goodbye"),
            "warning")
    _exit(0)


def install(package):
    """
    Automatically installs python pip package and restarts the program
    """
    try:
        pip.main(["install",  package])
    except AttributeError:
        check_call([sys.executable, '-m', 'pip', 'install', package])

    execl(sys.executable, sys.executable, *sys.argv)


try:
    from xxhash import xxh64
    xxhash_en = True
except ModuleNotFoundError:
    print("Xxhash is not installed - this mining algorithm will be disabled")
    xxhash_en = False

try:
    from colorama import Back, Fore, Style, init
    init(autoreset=True)
except ModuleNotFoundError:
    print("Colorama is not installed. "
          + "Miner will try to automatically install it "
          + "If it fails, please manually execute "
          + "python3 -m pip install colorama")
    install("colorama")

try:
    import cpuinfo
except ModuleNotFoundError:
    print("Cpuinfo is not installed. "
          + "Miner will try to automatically install it "
          + "If it fails, please manually execute "
          + "python3 -m pip install py-cpuinfo")
    install("py-cpuinfo")


try:
    from pypresence import Presence
except ModuleNotFoundError:
    print("Pypresence is not installed. "
          + "Miner will try to automatically install it "
          + "If it fails, please manually execute "
          + "python3 -m pip install pypresence")
    install("pypresence")

psutil_en = True
try:
    """
    Suppress psutil import error output,
    doing this will generate an error for devices 
    that don't have access to the /proc folder
    """
    #sys.stderr = open(os.devnull, "w")
    #print("yeah")
    import psutil
except ModuleNotFoundError:
    print("Psutil is not installed. "
          + "Miner will try to automatically install it "
          + "If it fails, please manually execute "
          + "python3 -m pip install psutil")
    install("psutil")

try:
    psutil.cpu_percent()
except:
    sys.stderr = sys.__stderr__
    psutil_en = False
    print("Psutil disabled")


class Settings:
    """
    Class containing default miner and server settings
    """
    ENCODING = "UTF8"
    SEPARATOR = ","
    VER = 2.72
    DATA_DIR = "Duino-Coin PC Miner " + str(VER)
    TRANSLATIONS = ("https://raw.githubusercontent.com/"
                    + "revoxhere/"
                    + "duino-coin/master/Resources/"
                    + "PC_Miner_langs.json")
    TRANSLATIONS_FILE = "/Translations.json"
    SETTINGS_FILE = "/Settings.cfg"

    SOC_TIMEOUT = 15
    REPORT_TIME = 50
    DONATE_LVL = 0

    BLOCK = " ‖ "
    PICK = " "
    COG = " @"
    if os.name != "nt":
        # Windows' cmd does not support emojis, shame!
        PICK = " ⛏"
        COG = " ⚙"


class Algorithms:
    """
    Class containing algorithms used by the miner
    For more info about the implementation refer to the Duino whitepaper:
    https://github.com/revoxhere/duino-coin/blob/gh-pages/assets/whitepaper.pdf
    """
    def DUCOS1(last_h: str, exp_h: str, diff: int, eff: int):
        time_start = time()
        base_hash = sha1(last_h.encode('ascii'))

        for nonce in range(100 * diff + 1):
            if (int(eff) != 100 and nonce % (1_000 * int(eff)) == 0):
                if psutil_en and int(eff) < 95:
                    if psutil.cpu_percent() > int(eff):
                        sleep(1/100*int(eff))

            temp_h = base_hash.copy()
            temp_h.update(str(nonce).encode('ascii'))
            d_res = temp_h.hexdigest()

            if d_res == exp_h:
                time_elapsed = time() - time_start
                hashrate = nonce / time_elapsed
                return [nonce, hashrate]

        return [0, 0]

    def XXHASH(last_h: str, exp_h: str, diff: int,  eff: int):
        time_start = time()

        for nonce in range(100 * diff + 1):
            if (int(eff) != 100
                    and nonce % (1_000 * int(eff)) == 0):
                if psutil_en and int(eff) < 95:
                    if psutil.cpu_percent() > int(eff):
                        sleep(1/100/int(eff))

            d_res = xxh64(last_h + str(nonce),
                          seed=2811).hexdigest()

            if d_res == exp_h:
                time_elapsed = time() - time_start
                hashrate = nonce / time_elapsed
                return [nonce, hashrate]

        return [0, 0]


class Client:
    """
    Class helping to organize socket connections
    """
    def connect(pool: tuple):
        global s
        s = socket()
        s.settimeout(Settings.SOC_TIMEOUT)
        s.connect((pool))

    def send(msg: str):
        sent = s.sendall(str(msg).encode(Settings.ENCODING))
        return True

    def recv(limit: int = 128):
        data = s.recv(limit).decode(Settings.ENCODING).rstrip("\n")
        return data

    def fetch_pool():
        """
        Fetches best pool from the /getPool API endpoint
        """
        while True:
            try:
                pretty_print(get_string("connection_search"),
                             "warning", "net0")
                response = requests.get(
                    "https://server.duinocoin.com/getPool").json()
                pretty_print(get_string('connecting_node')
                             + Fore.RESET + Style.NORMAL
                             + str(response["name"]),
                             "success", "net0")
                return (response["ip"], response["port"])
            except KeyboardInterrupt:
                _exit(0)
            except Exception as e:
                pretty_print("Error retrieving mining node: "
                             + str(e) + ", retrying in 15s",
                             "error", "net0")
                sleep(15)


def get_prefix(symbol: str,
               val: float,
               accuracy: int):
    """
    H/s, 1000 => 1 kH/s
    """
    if val >= 1_000_000_000_000:  # Really?
        val = str(round((val / 1_000_000_000_000), accuracy)) + " T"
    elif val >= 1_000_000_000:
        val = str(round((val / 1_000_000_000), accuracy)) + " G"
    elif val >= 1_000_000:
        val = str(round((val / 1_000_000), accuracy)) + " M"
    elif val >= 1_000:
        val = str(round((val / 1_000))) + " k"
    else:
        val = str(round(val)) + " "
    return val + symbol


def periodic_report(start_time, end_time,
                    shares, hashrate, uptime):
    """
    Displays nicely formated uptime stats
    """
    seconds = round(end_time - start_time)
    pretty_print(get_string("periodic_mining_report")
                 + Fore.RESET + Style.NORMAL
                 + get_string("report_period")
                 + str(seconds) + get_string("report_time")
                 + get_string("report_body1")
                 + str(shares) + get_string("report_body2")
                 + str(round(shares/seconds, 1))
                 + get_string("report_body3")
                 + get_string("report_body4")
                 + str(get_prefix("H/s", hashrate, 2))
                 + get_string("report_body5")
                 + str(int(hashrate*seconds))
                 + get_string("report_body6")
                 + get_string("total_mining_time")
                 + str(uptime), "success")


def calculate_uptime(start_time):
    """
    Returns seconds, minutes or hours passed since timestamp
    """
    uptime = time() - start_time
    if uptime <= 59:
        return str(round(uptime)) + get_string("uptime_seconds")
    elif uptime == 60:
        return str(round(uptime // 60)) + get_string("uptime_minute")
    elif uptime >= 60:
        return str(round(uptime // 60)) + get_string("uptime_minutes")
    elif uptime == 3600:
        return str(round(uptime // 3600)) + get_string("uptime_hour")
    elif uptime >= 3600:
        return str(round(uptime // 3600)) + get_string("uptime_hours")


def pretty_print(msg: str = None,
                 state: str = "success",
                 sender: str = "sys0"):
    """
    Produces nicely formatted CLI output for messages:
    HH:MM:S |sender| msg
    """
    if sender.startswith("net"):
        bg_color = Back.BLUE
    elif sender.startswith("cpu"):
        bg_color = Back.YELLOW
    elif sender.startswith("sys"):
        bg_color = Back.GREEN

    if state == "success":
        fg_color = Fore.GREEN
    elif state == "error":
        fg_color = Fore.RED
    else:
        fg_color = Fore.YELLOW

    with thread_lock():
        print(Fore.WHITE + datetime.now().strftime(Style.DIM + "%H:%M:%S ")
              + Style.BRIGHT + bg_color + " " + sender + " "
              + Back.RESET + " " + fg_color + msg.strip())


def share_print(id, type,
                accept, reject,
                hashrate, total_hashrate,
                computetime, diff, ping,
                back_color):
    """
    Produces nicely formatted CLI output for shares:
    HH:MM:S |cpuN| ⛏ Accepted 0/0 (100%) ∙ 0.0s ∙ 0 kH/s ⚙ diff 0 k ∙ ping 0ms
    """
    total_hashrate = get_prefix("H/s", total_hashrate, 2)
    diff = get_prefix("", int(diff), 0)

    if type == "accept":
        share_str = get_string("accepted")
        fg_color = Fore.GREEN
    elif type == "block":
        share_str = get_string("block_found")
        fg_color = Fore.YELLOW
    else:
        share_str = get_string("rejected")
        fg_color = Fore.RED

    with thread_lock():
        print(Fore.WHITE + datetime.now().strftime(Style.DIM + "%H:%M:%S ")
              + Fore.WHITE + Style.BRIGHT + back_color + Fore.RESET
              + " cpu" + str(id) + " " + Back.RESET
              + fg_color + Settings.PICK + share_str + Fore.RESET
              + str(accept) + "/" + str(accept + reject) + Fore.YELLOW
              + " (" + str(round(accept / (accept + reject) * 100)) + "%)"
              + Style.NORMAL + Fore.RESET
              + " ∙ " + str("%04.1f" % float(computetime)) + "s"
              + Style.NORMAL + " ∙ " + Fore.BLUE + Style.BRIGHT
              + str(total_hashrate) + Fore.RESET + Style.NORMAL
              + Settings.COG + " diff " + str(diff) + " ∙ " + Fore.CYAN
              + "ping " + str("%02.0f" % int(ping)) + "ms")


def get_string(string_name):
    """
    Gets a string from the language file
    """
    if string_name in lang_file[lang]:
        return lang_file[lang][string_name]
    elif string_name in lang_file["english"]:
        return lang_file["english"][string_name]
    else:
        return "String not found: " + string_name


class Miner:
    def greeting():
        diff_str = get_string("net_diff_short")
        if user_settings["start_diff"] == "LOW":
            diff_str = get_string("low_diff_short")
        elif user_settings["start_diff"] == "MEDIUM":
            diff_str = get_string("medium_diff_short")

        current_hour = strptime(ctime(time())).tm_hour
        greeting = get_string("greeting_back")
        if current_hour < 12:
            greeting = get_string("greeting_morning")
        elif current_hour == 12:
            greeting = get_string("greeting_noon")
        elif current_hour > 12 and current_hour < 18:
            greeting = get_string("greeting_afternoon")
        elif current_hour >= 18:
            greeting = get_string("greeting_evening")

        print("\n" + Style.DIM + Fore.YELLOW + Settings.BLOCK + Fore.YELLOW
              + Style.BRIGHT + get_string("banner") + Style.RESET_ALL
              + Fore.MAGENTA + " (v" + str(Settings.VER) + ") "
              + Fore.RESET + "2019-2021")

        print(Style.DIM + Fore.YELLOW + Settings.BLOCK + Style.NORMAL
              + Fore.YELLOW + "https://github.com/revoxhere/duino-coin")

        if lang != "english":
            print(Style.DIM + Fore.YELLOW + Settings.BLOCK
                  + Style.NORMAL + Fore.RESET + lang.capitalize()
                  + " translation: " + Fore.YELLOW
                  + get_string("translation_autor"))

        try:
            if psutil_en:
                print(Style.DIM + Fore.YELLOW + Settings.BLOCK
                    + Style.NORMAL + Fore.RESET + "CPU: " + Style.BRIGHT
                    + Fore.YELLOW + str(user_settings["threads"])
                    + "x " + str(cpu["brand_raw"]))
        except:
            print(Style.DIM + Fore.YELLOW + Settings.BLOCK
                  + Style.NORMAL + Fore.RESET + "CPU: " + Style.BRIGHT
                  + Fore.YELLOW + str(user_settings["threads"])
                  + "x threads")

        if os.name == "nt" or os.name == "posix":
            print(Style.DIM + Fore.YELLOW
                  + Settings.BLOCK + Style.NORMAL + Fore.RESET
                  + get_string("donation_level") + Style.BRIGHT
                  + Fore.YELLOW + str(user_settings["donate"]))

        print(Style.DIM + Fore.YELLOW + Settings.BLOCK
              + Style.NORMAL + Fore.RESET + get_string("algorithm")
              + Style.BRIGHT + Fore.YELLOW + user_settings["algorithm"]
              + Settings.COG + " " + diff_str)

        if user_settings["identifier"] != "None":
            print(Style.DIM + Fore.YELLOW + Settings.BLOCK
                  + Style.NORMAL + Fore.RESET + get_string("rig_identifier")
                  + Style.BRIGHT + Fore.YELLOW + user_settings["identifier"])

        print(Style.DIM + Fore.YELLOW + Settings.BLOCK
              + Style.NORMAL + Fore.RESET + str(greeting)
              + ", " + Style.BRIGHT + Fore.YELLOW
              + str(user_settings["username"]) + "!\n")

    def preload():
        """
        Creates needed directories and files for the miner
        """
        global lang_file
        global lang

        if not Path(Settings.DATA_DIR).is_dir():
            mkdir(Settings.DATA_DIR)

        if not Path(Settings.DATA_DIR + Settings.TRANSLATIONS_FILE).is_file():
            with open(Settings.DATA_DIR + Settings.TRANSLATIONS_FILE,
                      "wb") as f:
                f.write(requests.get(Settings.TRANSLATIONS).content)

        with open(Settings.DATA_DIR + Settings.TRANSLATIONS_FILE, "r",
                  encoding=Settings.ENCODING) as file:
            lang_file = json.load(file)

        try:
            if not Path(Settings.DATA_DIR + Settings.SETTINGS_FILE).is_file():
                locale = getdefaultlocale()[0]
                if locale.startswith("es"):
                    lang = "spanish"
                elif locale.startswith("pl"):
                    lang = "polish"
                elif locale.startswith("fr"):
                    lang = "french"
                elif locale.startswith("mt"):
                    lang = "maltese"
                elif locale.startswith("ru"):
                    lang = "russian"
                elif locale.startswith("de"):
                    lang = "german"
                elif locale.startswith("tr"):
                    lang = "turkish"
                elif locale.startswith("pr"):
                    lang = "portugese"
                elif locale.startswith("it"):
                    lang = "italian"
                elif locale.startswith("zh"):
                    lang = "chinese_simplified"
                elif locale.startswith("th"):
                    lang = "thai"
                else:
                    lang = "english"
            else:
                try:
                    configparser.read(Settings.DATA_DIR
                                      + Settings.SETTINGS_FILE)
                    lang = configparser["PC Miner"]["language"]
                except Exception:
                    lang = "english"
        except Exception as e:
            print("Error with lang file, falling back to english: " + str(e))
            lang = "english"

    def load_cfg():
        """
        Loads miner settings file or starts the config tool
        """
        if not Path(Settings.DATA_DIR + Settings.SETTINGS_FILE).is_file():
            print(get_string("basic_config_tool")
                  + Settings.DATA_DIR
                  + get_string("edit_config_file_warning")
                  + "\n"
                  + get_string("dont_have_account")
                  + Fore.YELLOW
                  + get_string("wallet")
                  + Fore.RESET
                  + get_string("register_warning"))

            username = input(get_string("ask_username") + Style.BRIGHT)
            if not username:
                username = choice(["revox", "Bilaboz", "JoyBed", "Connor2"])

            algorithm = "DUCO-S1"
            if xxhash_en:
                print(Style.BRIGHT
                      + "1" + Style.NORMAL + " - DUCO-S1 ("
                      + get_string("recommended")
                      + ")\n" + Style.BRIGHT
                      + "2" + Style.NORMAL + " - XXHASH")
                prompt = sub(r"\D", "",
                             input(get_string("ask_algorithm")
                                   + Style.BRIGHT))
                if prompt == "2":
                    algorithm = "XXHASH"

            intensity = None
            if psutil_en:
                intensity = sub(r"\D", "",
                                input(Style.NORMAL
                                      + get_string("ask_intensity")
                                       + Style.BRIGHT))

            if not intensity:
                intensity = 95
            elif float(intensity) > 100:
                intensity = 100
            elif float(intensity) < 1:
                intensity = 1

            threads = sub(r"\D", "",
                          input(Style.NORMAL + get_string("ask_threads")
                                + str(cpu_count()) + "): " + Style.BRIGHT))
            if not threads:
                threads = cpu_count()
            elif int(threads) > 8:
                threads = 8
                pretty_print(
                    Style.BRIGHT
                    + get_string("max_threads_notice"))
            elif int(threads) < 1:
                threads = 1

            print(Style.BRIGHT
                  + "1" + Style.NORMAL + " - " + get_string("low_diff")
                  + "\n" + Style.BRIGHT
                  + "2" + Style.NORMAL + " - " + get_string("medium_diff")
                  + "\n" + Style.BRIGHT
                  + "3" + Style.NORMAL + " - " + get_string("net_diff"))
            start_diff = sub(r"\D", "",
                             input(Style.NORMAL + get_string("ask_difficulty")
                                   + Style.BRIGHT))
            if start_diff == "1":
                start_diff = "LOW"
            elif start_diff == "3":
                start_diff = "NET"
            else:
                start_diff = "MEDIUM"

            rig_id = input(Style.NORMAL + get_string("ask_rig_identifier")
                           + Style.BRIGHT)
            if rig_id.lower() == "y":
                rig_id = input(Style.NORMAL + get_string("ask_rig_name")
                               + Style.BRIGHT)
            else:
                rig_id = "None"

            configparser["PC Miner"] = {
                "username":    username,
                "intensity":   intensity,
                "threads":     threads,
                "start_diff":  start_diff,
                "donate":      Settings.DONATE_LVL,
                "identifier":  rig_id,
                "algorithm":   algorithm,
                "language":    lang,
                "debug":       "n",
                "soc_timeout": Settings.SOC_TIMEOUT,
                "report_sec":  Settings.REPORT_TIME,
                "discord_rp":  "y"}

            with open(Settings.DATA_DIR + Settings.SETTINGS_FILE,
                      "w") as configfile:
                configparser.write(configfile)
                print(Style.RESET_ALL + get_string("config_saved"))

        configparser.read(Settings.DATA_DIR
                          + Settings.SETTINGS_FILE)
        return configparser["PC Miner"]

    def m_connect(id, pool):
        socket_connection = Client.connect(pool)
        POOL_VER = Client.recv(5)

        if id == 0:
            Client.send("MOTD")
            motd = Client.recv(512).replace("\n", "\n\t\t")

            pretty_print("MOTD: " + Fore.RESET + Style.NORMAL + str(motd),
                         "success", "net" + str(id))

            if float(POOL_VER) <= Settings.VER:
                pretty_print(get_string("connected") + Fore.RESET
                             + Style.NORMAL + get_string("connected_server")
                             + str(POOL_VER) + ", " + pool[0] + ":"
                             + str(pool[1]) + ")", "success", "net" + str(id))
            else:
                pretty_print(get_string("outdated_miner")
                             + str(Settings.VER) + ") -"
                             + get_string("server_is_on_version")
                             + str(POOL_VER) + Style.NORMAL
                             + Fore.RESET + get_string("update_warning"),
                             "warning", "net" + str(id))
                sleep(5)

    def mine(id: int, user_settings: list,
             pool: tuple,
             accept: int, reject: int,
             hashrate: list):
        """
        Main section that executes the functionalities from the sections above.
        """
        
        using_algo = get_string("using_algo")
        if user_settings["algorithm"] == "XXHASH":
            using_algo = get_string("using_algo_xxh")

        pretty_print(get_string("mining_thread") + str(id)
                     + get_string("mining_thread_starting")
                     + Style.NORMAL + Fore.RESET + using_algo + Fore.YELLOW
                     + str(user_settings["intensity"])
                     + "% " + get_string("efficiency"),
                     "success", "sys"+str(id))

        last_report = time()
        r_shares, last_shares = 0, 0
        while True:
            try:
                Miner.m_connect(id, pool)
                while True:
                    try:
                        while True:
                            job_req = "JOB"
                            if user_settings["algorithm"] == "XXHASH":
                                job_req = "JOBXX"

                            Client.send(job_req
                                        + Settings.SEPARATOR
                                        + str(user_settings["username"])
                                        + Settings.SEPARATOR
                                        + str(user_settings["start_diff"]))

                            job = Client.recv().split(Settings.SEPARATOR)
                            if len(job) == 3:
                                break
                            else:
                                pretty_print(
                                    "Node message: " + str(job[1]),
                                    "warning")
                                sleep(3)

                        while True:
                            time_start = time()
                            if user_settings["algorithm"] == "XXHASH":
                                back_color = Back.CYAN
                                result = Algorithms.XXHASH(
                                    job[0], job[1], int(job[2]),
                                    user_settings["intensity"])
                            else:
                                back_color = Back.YELLOW
                                result = Algorithms.DUCOS1(
                                    job[0], job[1], int(job[2]),
                                    user_settings["intensity"])
                            computetime = time() - time_start

                            hashrate[id] = result[1]
                            total_hashrate = sum(hashrate.values())
                            while True:
                                Client.send(str(result[0])
                                            + Settings.SEPARATOR
                                            + str(result[1])
                                            + Settings.SEPARATOR
                                            + "Official PC Miner ("
                                            + user_settings["algorithm"]
                                            + ") v" + str(Settings.VER)
                                            + Settings.SEPARATOR
                                            + str(user_settings["identifier"]))

                                time_start = time()
                                feedback = Client.recv(
                                ).split(Settings.SEPARATOR)
                                ping = (time() - time_start) * 1000

                                if feedback[0] == "GOOD":
                                    accept.value += 1
                                    share_print(id, "accept",
                                                accept.value, reject.value,
                                                result[1], total_hashrate,
                                                computetime, job[2], ping,
                                                back_color)

                                elif feedback[0] == "BLOCK":
                                    reject.value += 1
                                    share_print(id, "block",
                                                accept.value, reject.value,
                                                result[1], total_hashrate,
                                                computetime, job[2], ping,
                                                back_color)

                                elif feedback[0] == "BAD":
                                    reject.value += 1
                                    share_print(id, "reject",
                                                accept.value, reject.value,
                                                result[1], total_hashrate,
                                                computetime, job[2], ping,
                                                back_color)

                                if id == 0:
                                    end_time = time()
                                    elapsed_time = end_time - last_report
                                    if elapsed_time >= Settings.REPORT_TIME:
                                        r_shares = accept.value - last_shares
                                        uptime = calculate_uptime(
                                            mining_start_time)
                                        periodic_report(last_report, end_time,
                                                        r_shares,
                                                        sum(hashrate.values()),
                                                        uptime)
                                        last_report = time()
                                        last_shares = accept.value
                                break
                            break
                    except Exception as e:
                        pretty_print(get_string("error_while_mining")
                                     + " " + str(e), "error", "net" + str(id))
                        sleep(5)
                        break
            except Exception as e:
                pass


class Discord_rp:
    def connect():
        global RPC
        try:
            RPC = Presence(808045598447632384)
            RPC.connect()
            Thread(target=Discord_rp.update).start()
        except Exception as e:
            #print("Error launching Discord RPC thread: " + str(e))
            pass

    def update():
        while True:
            try:
                total_hashrate = get_prefix("H/s", sum(hashrate.values()), 2)
                RPC.update(details="Hashrate: " + str(total_hashrate),
                           start=mining_start_time,
                           state=str(accept.value) + "/"
                           + str(reject.value + accept.value)
                           + " accepted shares",
                           large_image="ducol",
                           large_text="Duino-Coin, "
                           + "a coin that can be mined with almost everything"
                           + ", including AVR boards",
                           buttons=[{"label": "Visit duinocoin.com",
                                     "url": "https://duinocoin.com"},
                                    {"label": "Join the Discord",
                                     "url": "https://discord.gg/k48Ht5y"}])
            except Exception as e:
                #print("Error updating Discord RPC thread: " + str(e))
                pass
            sleep(15)

Miner.preload()
p_list = []
mining_start_time = time()
if __name__ == "__main__":
    from multiprocessing import freeze_support
    freeze_support()

    cpu = cpuinfo.get_cpu_info()
    accept = Manager().Value("i", 0)
    reject = Manager().Value("i", 0)
    hashrate = Manager().dict()

    signal(SIGINT, handler)
    user_settings = Miner.load_cfg()
    Miner.greeting()
    fastest_pool = Client.fetch_pool()

    for i in range(int(user_settings["threads"])):
        p = Process(target=Miner.mine,
                    args=[i, user_settings,
                          fastest_pool, accept, reject,
                          hashrate])
        p_list.append(p)
        p.start()
        sleep(0.05)

    Discord_rp.connect()

    for p in p_list:
        p.join()