#!/usr/bin/python

import os
from os import makedirs
import logging
import locale
import datetime
from datetime import timedelta
import sys
import psutil
import subprocess
import distro
import requests
import threading
from threading import Thread
import pathlib
from logging.handlers import TimedRotatingFileHandler
import tomlkit
import shutil
import time
import re
from libs.Kernel import Kernel, InstalledKernel, CommunityKernel
# from ui import AboutDialog, FlowBox,KernelStack,ManagerGUI,MenuButton,ProgressWindow,SettingsWindow,SplashScreen,Stack
from ui.MessageWindow import MessageWindow
from queue import Queue
import gi
gi.require_version("Gtk", "4.0")
from gi.repository import GLib



base_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))

lastest_archlinux_package_search_url = ("https://archlinux.org/packages/search/json?name=${PACKAGE_NAME}")
archlinux_mirror_archive_url = "https://archive.archlinux.org/"

headers = {
    "Content-Type": "text/plain;charset=UTF-8",
    "User-Agent": "Mozilla/5.0 (Linux x86_64) Gecko Firefox",
}

cache_days = 5
fetched_kernels_dict = {}
cached_kernel_list = []
community_kernels_list = []
supported_kernel_dict = {}
community_kernels_dict = {}
pacman_repos_list = []
process_timeout = 500
sudo_username = os.getlogin()
home = "/home" + str(sudo_username)

pacman_logfile = "/var/log/pacman.log"
pacman_lockfile = "/var/lib/pacman/db.lck"
pacman_conf_file = "/etc/pacman.conf"
pacman_cache = "/var/cache/pacman/pkg"

#Threads
thread_get_kernels = "thread_get_kernels"
thread_get_community_kernels = "thread_get_community_kernels"
thread_install_community_kernel = "thread_install_community_kernel"
thread_install_archive_kernel = "thread_install_archive_kernel"
thread_check_kernel_state = "thread_check_kernel_state"
thread_uninstall_kernel = "thread_uninstall_kernel"
thread_monitor_messages = "thread_monitor_messages"
thread_refresh_cache = "thread_refresh_cache"
thread_refresh_ui = "thread_refresh_ui"

cache_dir = "%s/.cache/snigdhaos-kernel-switcher" % home
cache_file = "%s/kernels.toml" % cache_dir
cache_update = "%s/update" % cache_dir

log_dir = "/var/log/snigdhaos-kernel-switcher"
event_log_file = "%s/event.log" % log_dir

config_file_default = "%s/defaults/config.toml" % base_dir
config_dir = "%s/.config/snigdhaos-kernel-switcher" % home
config_file = "%s/.config/snigdhaos-kernel-switcher/config.toml" % home

logger = logging.getLogger("logger")

# console handler
ch = logging.StreamHandler()

# Format
formatter = logging.Formatter("%(asctime)s:%(levelname)s > %(message)s", "%Y-%m-%d %H:%M:%S")
ch.setFormatter(formatter)
logger.addHandler(ch)

#Local
locale.setlocale(locale.LC_ALL, "C.utf8")
locale_env = os.environ
locale_env["LC_ALL"] = "C.utf8"

# Function -> check general update
def permissions(dst):
    try:
        groups = subprocess.run(["sh", "-c", "id" + sudo_username], shell=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env=locale_env)
        for i in groups.stdout.decode().split(" "):
            if "gid" in i:
                g = i.split("(")[1]
                group = g.replace(")", "").strip()
        subprocess.call(["chown", "-R", sudo_username, + ":" + group, dst], shell=False, env=locale_env)
    except Exception as e:
        logger.error("Found Error in permissions()!" % e)

def refresh_cache(self):
    cached_kernel_list.clear()
    if os.path.exists(cache_file):
        os.remove(cache_file)

def write_cache():
    try:
        if len(fetched_kernels_dict) > 0:
            with open(cache_file,"w",encoding="utf-8") as f:
                f.write('title = "Arch Linux Kernels"\n\n')
                f.write('timestamp = "%s"\n' % datetime.datetime.now().strftime("%Y-%m-%d %H-%M-%S"))
                f.write('source = "%s"\n\n' % archlinux_mirror_archive_url)
                for kernel in fetched_kernels_dict.values():
                    f.write("[[kernel]]\n")
                    f.write('name = "%s"\nheaders = "%s"\nsize = "%s"\nfile_format = "%s"\nlast_modified = "%s"\n\n' % (kernel.name, kernel.headers, kernel.version, kernel.size, kernel.file_format,kernel.last_modified))
            permissions(cache_file)
    except Exception as e:
        logger.error("Found error in write_cache() %s" % e)

def get_latest_kernel_updates(self):
    logger.info("Getting latest Kernel Version! Please Wait...")
    try:
        latest_update_check = None
        fetch_update = False
        check_timeout = None

        if os.path(cache_file):
            with open(cache_file, "r", encoding="utf-8") as f:
                data = f.readlines()[2]
                if len(data) == 0:
                    logger.error("%s is empty! Please restart the application after deleting it." %cache_file)
                if len(data) > 0 and "timestamp" in data.strip():
                    cache_timestamp = (data.split("timestamp = ")[1].replace('"', "").strip())
            if not os.path.exists(cache_update):
                last_update_check = datetime.datetime.now().strftime("%Y-%m-%d")
                with open(cache_update, mode="w", encoding="utf-8") as f:
                    f.write("%s\n" % last_update_check)
                permissions(cache_dir)
            else:
                with open(cache_update, mode="r", encoding="utf-8") as f:
                    last_update_check = f.read().strip()
                with open(cache_update, mode="w", encoding="utf-8") as f:
                    f.write("%s\n" % datetime.datetime.now().strftime("%Y-%m-%d"))
                permissions(cache_dir)
            logger.info("Last Update fetched on %s" % datetime.datetime.strptime(last_update_check, "%Y-%m-%d").date())
            if (datetime.datetime.strptime(last_update_check, "%Y-%m-%d").date() < datetime.datetime.now().date()):
                logger.info("Fetching Linux Package Update Date...")
                response = requests.get(lastest_archlinux_package_search_url.replace("${PACKAGE_NAME}", "linux"),headers=headers,allow_redirects=True,timeout=60,stream=True)
                if response.status_code == 200:
                    if response.json() is not None:
                        if len(response.json()["results"]) > 0:
                            if response.json()["results"][0]["last_update"]:
                                logger.info("Linux Kernel Package Last Update = %s" % datetime.datetime.strptime(response.json()["results"][0]["last_update"], "%Y-%m-%dT%H:%M:%S.%f.%z").date())
                                if (datetime.datetime.strptime(response.json()["results"][0]["last_update"], "%Y-%m-%dT%H:%M:%S.%f.%z").date()) >= (datetime.datetime.strptime(cache_timestamp, "%Y-%m-%d %H-%M-%S").date()):
                                    logger.info("Linux Package Updated!")
                                    refresh_cache(self)
                                    return True
                                else:
                                    logger.info("Linux Kernel Update Failed!")
                                    return False
                    else:
                        logger.error("Failed to get Response Code!")
                        logger.error(response.text)
                        return False
                else:
                    logger.info("Update Check Not Required!")
                    return False
            else:
                logger.info("No Cache File Present at the Moment!")
                if not os.path.exists(cache_update):
                    last_update_check = datetime.datetime.now().strftime("%Y-%m-%d")
                    with open(cache_update, mode="w", encoding="utf-8") as f:
                        f.write("%s\n" % last_update_check)
                    permissions(cache_dir)
    except Exception as e:
        logger.error("Found error in get_latest_kernel_updates() %s" % e)
        return True

def get_cache_last_modified():
    try:
        if os.path.exists(cache_file):
            timestamp = datetime.datetime.fromtimestamp(pathlib.Path(cache_file).stat().st_mtime, tz=datetime.timezone.utc)
            return "%s %s" %(timestamp.date(), str(timestamp.time()).split(".")[0])
        else:
            return "Cache File Does not Exist!"
    except Exception as e:
        logger.error("Found Error in get_cache_last_modified() %s" % e)

try:
    if not os.path.exists(log_dir):
        makedirs(log_dir)
except Exception as e:
    logger.error("Found Error while creating log_dir %s" % e)

tfh = TimedRotatingFileHandler(event_log_file, encoding="utf-8", delay=False, when="W4")
tfh.setFormatter(formatter)
logger.addHandler(tfh)

def setup_config(self):
    try:
        if not os.path.exists(config_dir):
            makedirs(config_dir)
        if not os.path.exists(config_file):
            # makedirs(config_file)
            shutil.copy(config_file_default, config_dir)
            permissions(config_dir)
        return read_config(self)
    except Exception as e:
        logger.error("Found error in setup_config() %s" % e)

def update_config(config_data, bootloader):
    try:
        logger.info("Update Configuration Data...")
        with open(config_file, "w") as f:
            tomlkit.dump(config_data, f)
        return True
    except Exception as e:
        logger.error("Found error in update_config() %s" % e)

def read_config(self):
    try:
        logger.info("Reading config file: %s" %config_file)
        config_data = None
        with open(config_file, "rb") as f:
            config_data = tomlkit.load(f)
            if (config_data.get("kernels") and "official" in config_data["kernels"] is not None):
                for i in config_data["kernels"]["official"]:
                    supported_kernel_dict[i["name"]] = (i["description"], i["headers"])
            if (config_data.get("kernels") and "community" in config_data["kernels"] is not None):
                for j in config_data["kernels"]["community"]:
                    community_kernels_dict[j["name"]] = (j["description"], j["headers"], j["repository"])
            if (config_data.get("logging") is not None and "loglevel" in config_data["logging"] is not None):
                loglevel = config_data["logging"]["loglevel"].lower()
                logger.info("Setting loglevel: %s" % loglevel)
                if loglevel == "debug":
                    logger.setLevel(logging.DEBUG)
                elif loglevel == "info":
                    logger.setLevel(logging.INFO)
                else:
                    logger.warning("Invalid loglevel found! Available: Info/Debug")
                    logger.setLevel(logging.INFO)
            else:
                logger.setLevel(logging.INFO)
        return config_data
    except Exception as e:
        logger.error("Found error in read_config() %s" % e)
        sys.exit(1)

def create_cache_dir():
    try:
        if not os.path.exists(cache_dir):
            makedirs(cache_dir)
        logger.info("Cache Directory: %s" % cache_dir)
        permissions(cache_dir)
    except Exception as e:
        logger.error("Found error in create_cache_dir() %s" %e)

def create_log_dir():
    try:
        if not os.path.exists(log_dir):
            makedirs(log_dir)
        logger.info("Log Directory: %s" % log_dir)
    except Exception as e:
        logger.error("Found error in create_log_dir() %s" %e)

def install_archive_kernel(self):
    try:
        logger.debug("Cleaning pacman cache and removing official packages...")
        if os.path.exists(pacman_cache):
            for root, dirs, files in os.walk(pacman_cache):
                for name in files:
                    for official_kernels in supported_kernel_dict.keys():
                        if name.startswith(official_kernels):
                            if os.path.exists(os.path.join(root, name)):
                                os.remove(os.path.join(root, name))

        install_cmd_str = ["pacman", "-U", self.official_kernels[0], self.official_kernels[1], "--noconfirm", "--needed"]
        # Need to wait for process
        wait_for_pacman_process()

        if logger.getEffectiveLevel() == 10:
            logger.debug("Running %s" % install_cmd_str)
        event = "%s [INFO] Running %s\n" %(datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"), " ".join(install_cmd_str))
        error = False
        self.messages_queue.put(event)
        with subprocess.Popen(install_cmd_str, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True,env=locale_env) as process:
            while True:
                if process.poll() is not None:
                    break
                for line in process.stdout:
                    if logger.getEffectiveLevel() == 10:
                        print(line.strip())
                    self.messages_queue.put(line)
                    if "no space left on device" in line.lower().strip():
                        self.restore_kernel = None
                        error = True
                        break
                    if "initcpio" in line.lower().strip():
                        if "image generation successfull" in line.lower().strip():
                            error = False
                            break
                    if ("installation finished, no error reported" in line.lower().strip()):
                        error = False
                        break
                    if "error" in line.lower().strip() or "errors" in line.lower().strip():
                        error = True
                        break
        if error is True:
            self.errors_found = True
            error = True
            GLib.idle_add(
                show_mw, 
                self, 
                "System changes", 
                f"kernel {self.action} failed!\n"
                f"<b>There have been errors, please review the log</b>",
                priority=GLib.PRIORITY_DEFAULT,
                )
        if check_kernel_installed(self.kernel.name + "-headers") and error is False:
            self.kernel_state_queue.put(0, "install")
        else:
            self.kernel_state_queue.put(1, "install")
            self.errors_found = True
            self.messages_queue.put(event)
        if check_kernel_installed(self.kernel.name) and error is False:
            self.kernel_state_queue.put(0, "install")
        else:
            self.kernel_state_queue.put(1, "install")
            self.errors_found = True
        self.kernel_state_queue.put(None)
    except Exception as e:
        logger.error("Found error in install_archive_kernel %s" %e)

    finally:
        if os.path.exists(self.lockfile):
            os.unlink(self.lockfile)

def check_kernel_installed(name):
    try:
        logger.info("Checking kernel package %s is installed!" %name)
        check_cmd_str = ["pacman", "-Q", name]
        if logger.getEffectiveLevel() == 10:
            logger.debug("Running Command: %s" % check_cmd_str)
        
        process_kernel_query = subprocess.Popen(check_cmd_str, shell=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,env=locale_env)
        out, err = process_kernel_query.communicate(timeout=process_timeout)
        if process_kernel_query.returncode == 0:
            for line in out.decode("utf-8").splitlines():
                if line.split(" ")[0] == name:
                    logger.info("Kernel Installed")
                    return True
        else:
            logger.info("Kernel is not installed")
            return False
    except Exception as e:
        logger.error("Found error in check_kernel_installed() %s" % e)

def wait_for_pacman_process():
    logger.info("Waiting For Pacman Process")
    timeout = 120
    i = 0
    # need to check pacman lockfile
    while check_pacman_lockfile():
        time.sleep(0.1)
        if logger.getEffectiveLevel() == 10:
            logger.debug("Wait till pacman is locked!")
        i += 1
        if i == timeout:
            logger.info("Timeout!")
            break

def check_pacman_lockfile():
    return os.path.exists(pacman_lockfile)

def check_pacman_process(self):
    try:
        process_found = False
        for i in psutil.process_iter():
            try:
                pinfo = i.as_dict(attrs=["pid", "name","create_time"])
                if pinfo["name"] == "pacman":
                    process_found = True
            except (psutil.NoSuchProcess, psutil.AccessDenied):
                continue
        if process_found is True:
            logger.info("Pacman is already running...")
            return True
        else:
            return False
    except Exception as e:
        logger.error("Found error in check_pacman_process(): %s" % e)

def check_pacman_repo(repo):
    logger.info("Checking repository:%s is configured..." % repo)
    query_str = ["pacman-conf", "-r", repo]
    try:
        with subprocess.Popen(query_str,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,universal_newlines=True,env=locale_env) as process:
            while True:
                if process.poll() is not None:
                    break
                if process.returncode == 0:
                    return True
                else:
                    return False
    except Exception as e:
        logger.info("Found error in check_pacman_repo(): %s" %e)

def read_cache(self):
    try:
        self.timestamp = None
        with open(cache_file, "rb") as f:
            data = tomlkit.load(f)
            if len(data) == 0:
                logger.error("%s is empty! delete it and restart the application" %cache_file)
            name = None
            headers = None
            version = None
            size = None
            last_modified = None
            file_format = None
            if len(data) > 0:
                self.timestamp = data["timestamp"]
                self.cache_timestamp = data["timestamp"]
                if self.timestamp:
                    self.timestamp = datetime.datetime.strptime(self.timestamp, "%Y-%m-%d %H-%M-%S")
                    delta = datetime.datetime.now() - self.timestamp
                    if delta.days >= cache_days:
                        logger.info("Cache is older than 5 days! Refreshing...")
                        refresh_cache(self)
                    else:
                        if delta.days > 0:
                            logger.debug("Cache age: %s days." %delta.days)
                        else:
                            logger.debug("Cache is newer than 5 days!")
                        kernels = data["kernel"]
                        if len(kernels) > 1:
                            for i in kernels:
                                if (datetime.datetime.now().year - datetime.datetime.strptime(i["last_modified"], "%d-%b-%Y %H:%M").year <= 2):
                                    cached_kernel_list.append(Kernel(i["name"],i["headers"],i["version"],i["size"],i["last_modified"],i["file_format"]))
                            name = None
                            headers = None
                            version = None
                            size = None
                            last_modified = None
                            file_format = None

                            if len(cached_kernel_list) > 0:
                                sorted(cached_kernel_list)
                                logger.info("Kernel Cached Data has been processed!")
                        else:
                            logger.error("Cached File is Invalid! delete it and try again...")
            else:
                logger.error("Failed to read cache file!")
    except Exception as e:
        logger.error("Found error in read_cache() %s" %e)

def get_latest_versions(self):
    logger.info("Fetching Latest Kernel Information")
    kernel_versions = {}
    try:
        for i in supported_kernel_dict:
            check_cmd_str = ["pacman", "-Si", i]
            with subprocess.Popen(check_cmd_str, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,bufsize=1,universal_newlines=True,env=locale_env) as process:
                while True:
                    if process.poll() is not None:
                        break
                    for line in process.stdout:
                        if line.strip().replace(" ", "").startswith("Version:"):
                            kernel_versions[i] = (line.strip().replace(" ", "").split("Version:")[1])
                            break
        self.kernel_version_queue.put(kernel_versions)
    except Exception as e:
        logger.error("Found error in get_latest_versions() %s" %e)

def parse_archive_html(response, linux_kernel):
    for line in response.splitlines():
        if "<a href=" in line.strip():
            files = re.findall('<a href="([^"]*)', line.strip())
            if len(files) > 0:
                if "-x86_64" in files[0]:
                    version = files[0].split("-x86_64")[0]
                    file_format = files[04].split("-x86_64")[1]
                    url = ("/packages/l/%s" % archlinux_mirror_archive_url + "/%s" % linux_kernel + "/%s" % files[0]) #URL Struct unknown to me!
                    if ".sig" not in file_format:
                        if len(line.rstrip().split("    ")) > 0:
                            size = line.strip().split("     ").pop().strip()
                        last_modified = line.strip().split("</a>").pop()
                        for i in last_modified.split("    "):
                            if len(i.strip()) > 0 and ":" in i.strip():
                                last_modified = i.strip()
                        
                        headers = "%s%s" %(supported_kernel_dict[linux_kernel][1], version.replace(linux_kernel, ""))
                        if (version is not None and url is not None and headers is not None and file_format == ".pkg.tar.zst" and datetime.datetime.now().year - datetime.datetime.strptime(last_modified, "%d-%b-%Y %H:%M").year <= 2):
                            ke = Kernel(linux_kernel,headers,version,size,last_modified,file_format)
                            fetched_kernels_dict[version] = ke
                version = None
                file_format = None
                url = None
                size = None
                last_modified = None

def wait_for_response(response_queue):
    while True:
        items = response_queue.get()
        if items is None:
            break
        if len(supported_kernel_dict) == len(items):
            break

def get_response(session, linux_kernel, response_queue, response_content):
    response = session.get("%s/packages/l/%s" %(archlinux_mirror_archive_url, linux_kernel), headers=headers, allow_redirects=True, timout=60, stream=True)
    if response.status_code == 200:
        if logger.getEffectiveLevel() == 10:
            logger.debug("Response Code for %s/packages/l/%s = 200 (OK)" %(archlinux_mirror_archive_url, linux_kernel))
        if response.text is not None:
            response_content[linux_kernel] = response.text
            response_queue.put(response_content)
    else:
        logger.error("Failed To Process Request! Someting Went Wrong!")
        logger.error(response.text)
        response_queue.put(None)

def get_official_kernels(self):
    try:
        if not os.path.exists(cache_file) or self.refresh_cache is True:
            session = requests.session()
            response_queue = Queue()
            response_content = {}
            for linux_kernel in supported_kernel_dict:
                logger.info("Fetching data: %s/packages/l/%s" %(archlinux_mirror_archive_url, linux_kernel))
                Thread(target=get_response, args=(session,linux_kernel,response_queue,response_content), daemon=True).start()
            wait_for_response(response_queue)
            session.close()
            for kernel in response_content:
                parse_archive_html(response_content[kernel], kernel)
            if len(fetched_kernels_dict) > 0:
                write_cache()
                read_cache()
                self.queue_kernels.put(cached_kernel_list)
            else:
                logger.error("Failed to fetch Kernel List!")
                self.queue_kernels.put(None)
        else:
            logger.debug("Reading Cache File: %s" % cache_file)
            read_cache(self)
            self.queue_kernels.put(cached_kernel_list)
    except Exception as e:
        logger.error("Found error in get_official_kernels() %s" %e)

def wait_for_cache(self):
    while True:
        if not os.path.exists(cache_file):
            time.sleep(0.2)
        else:
            read_cache(self)
            break

def is_thread_alive(thread_name):
    for thead in threading.enumerate():
        if thead.name == thread_name and thead.is_alive():
            return True
    return False

def print_all_threads():
    for thread in threading.enumerate():
        if logger.getEffectiveLevel() == 10:
            logger.debug("Thread: %s and State: %s" %(thread.name, thread.is_alive()))

def update_progress_textview(self, line):
    try:
        if len(line) > 0:
            self.textbuffer.insert_markup(self.textbuffer.get_end_iter(), "%s" % line, len(" %s" % line))
    except Exception as e:
        logger.error("Found error in update_progress_textview(): %s" %e)
    finally:
        self.messages_queue.task_done()
        text_mark_end = self.textbuffer.create_mark("end", self.textbuffer.get_end_iter(), False)
        self.textview.scroll_mark_onscreen(text_mark_end)

def monitor_messages_queue(self):
    try:
        while True:
            message = self.messages_queue.get()
            GLib.idle_add(update_progress_textview, self, message, priority=GLib.PRIORITY_DEFAULT)
    except Exception as e:
        logger.error("Found error in monitor_messages_queue(): %s" %e)

def check_kernel_installed(name):
    try:
        logger.info("Checking if %s kernel is installed!" % name)
        check_cmd_str = ["pacman", "-Q", name]
        if logger.getEffectiveLevel() == 10:
            logger.debug("Executing: %s" %check_cmd_str)
        process_kernel_query = subprocess.Popen(check_cmd_str,shell=False,stdout=subprocess.PIPE,stderr=subprocess.STDOUT, env=locale_env)
        out,err = process_kernel_query.communicate(timeout=process_timeout)
        if process_kernel_query.returncode == 0:
            for i in out.decode("utf-8").splitlines():
                if i.split(" ")[0] == name:
                    logger.info("Kernel is already installed!")
                    return True
        else:
            logger.info("Kernel Not Installed!")
            return False
    except Exception as e:
        logger.error("Found error in check_kernel_installed(): %s" %e)

def uinstall(self):
    try:
        kernel_installed = check_kernel_installed(self.kernel.name)
        logger.info("Installed Kernel: %s" % kernel_installed)
        kernel_headers_installed = check_kernel_installed(self.kernel.name + "-headers")
        logger.info("Installed Kernel Header: %s" %kernel_headers_installed)
        uninstall_cmd_str = None
        event_log = {}
        if kernel_installed is True and kernel_headers_installed is True:
            uninstall_cmd_str = ["pacman", "-Rs", self.kernel.name, self.kernel.name + "-headers", "--noconfirm"]
        if kernel_installed is True and kernel_headers_installed is False:
            uninstall_cmd_str = ["pacman", "-Rs", self.kernel.name, "--noconfirm"]
        if kernel_installed == 0:
            logger.info("Kernel Not Installed! Uninstallation is not Required!")
            self.kernel_state_queue.put(0, "uninstall")
            return
        if uninstall_cmd_str is not None:
            wait_for_pacman_process()
            event = "%s [INFO]: Running %s\n" %(datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"), " ".join(uninstall_cmd_str))
            self.messages_queue.put(event)
            with subprocess.Popen(uninstall_cmd_str,stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True,env=locale_env,bufsize=1) as process:
                while True:
                    if process.poll() is not None:
                        break
                    for i in process.stdout:
                        if logger.getEffectiveLevel() == 10:
                            print(i.strip())
                        self.messages_queue.put(i)
                        if ("error" in i.lower().strip() or "errors" in i.lower().strip()):
                            self.errors_found = True
                            break
            if "headers" in uninstall_cmd_str:
                if check_kernel_installed(self.kernel.name + "-headers") is True:
                    self.kernel_state_queue.put(1, "uninstall")
                    event = ("%s [ERROR]: Failed to Uninstall!\n" % datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"))
                    self.messages_queue.put(event)
                else:
                    self.kernel_state_queue.put(0, "uninstall")
                    event = ("%s [INFO]: Uninstall Completed!\n" % datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"))
                    self.messages_queue.put(event)
            else:
                if check_kernel_installed(self.kernel.name) is True:
                    self.kernel_state_queue.put(1, "uninstall")
                    event = ("%s [ERROR]: Failed to Uninstall!\n" % datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"))
                    self.messages_queue.put(event)
                else:
                    self.kernel_state_queue.put(0, "uninstall")
                    event = ("%s [INFO]: Uninstall Completed!\n" % datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"))
                    self.messages_queue.put(event)
            self.kernel_state_queue.put(None)
    except Exception as e:
        logger.error("Found error in uninstall(): %s" %e)

def get_community_kernels(self):
    try:
        logger.info("Fetching Community Kernel Insformation...")
        for i in sorted(community_kernels_dict):
            if community_kernels_dict[i][2] in pacman_repos_list:
                pacman_repo = community_kernels_dict[i][2]
                headers = community_kernels_dict[i][1]
                name = i
                query_cmd = ["pacman", "-Si", "%s/%s" % (pacman_repo, name)]
                process_kernel_query = subprocess.Popen(query_cmd,shell=False,stdout=subprocess.PIPE,stderr=subprocess.PIPE,env=locale_env)
                out,err = process_kernel_query.communicate(timeout=process_timeout)
                version = None
                install_size = None
                build_date = None
                if process_kernel_query.returncode == 0:
                    for i in out.decode("utf-8").splitlines():
                        if i.startswith("Version        :"):
                            version = i.split("Version      :")[1].strip()
                        if i.startswith("Installed Size        :"):
                            install_size = i.split("Installed Size      :")[1].strip()
                            if logger.getEffectiveLevel() == 10:
                                logger.debug("Installed: %s | Kernel Size: %s" %(name, install_size))
                            if "MiB" in install_size:
                                if install_size.find(",") >= 0:
                                    if logger.getEffectiveLevel() == 10:
                                        logger.debug("Found ','-comma inside installed size!")
                                    install_size = round(float(install_size.replace(",", ".").strip().replace("MiB","").strip())*1.048576,1)
                                else:
                                    install_size = round(float(install_size.replace("MiB","").strip())*1.048576,1)
                        if i.startswith("Build Date     :"):
                            build_date = i.split("Build Date     :")[1].strip()
                            if name and version and install_size and build_date:
                                community_kernels_list.append(CommunityKernel(name,headers,pacman_repo,version,build_date,install_size))
        self.queue_community_kernel.put(community_kernels_list)
    except Exception as e:
        logger.error("Found error in get_community_kernel(): %s" %e)

def install_community_kernel(self):
    try:
        if logger.getEffectiveLevel() == 10:
            logger.debug("Cleaning pacman cache, Removing community packages...")
        if os.path.exists(pacman_cache):
            for root, dirs, files in os.walk(pacman_cache):
                for name in files:
                    for comm_kernel in community_kernels_dict.keys():
                        if name.startswith(comm_kernel):
                            if os.path.exists(os.path.join(root, name)):
                                os.remove(os.path.join(root,name))
        error = False
        install_cmd_str = ["pacman", "-S", "%s/%s" %(self.kernel.repository, self.kernel.name), "%s/%s" %(self.kernel.repository, "%s-headers" % self.kernel.name), "--noconfirm", "--needed"]
        if logger.getEffectiveLevel() == 10:
            logger.debug("Running: %s" % install_cmd_str)
        event = "%s [INFO] Running: %s\n" % (datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"), " ".join(install_cmd_str))
        error = False
        self.messages_queue.put(event)
        with subprocess.Popen(install_cmd_str,stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True, encoding=locale_env) as process:
            while True:
                if process.poll() is not None:
                    break
                for i in process.stdout:
                    if logger.getEffectiveLevel() == 10:
                        print(i.strip())
                    self.messages_queue.put(i)
                    if "no space left on device" in i.lower().strip():
                        error = True
                        break
                    if "initcpio" in i.lower().strip():
                        if "image generation successfull" in i.lower().strip():
                            error = False
                            break
                    if "installation finished. no error reported" in i.lower().strip():
                        error = False
                        break
                    if "error" in i.lower().strip():
                        error = True
                        break
                time.sleep(0.1)
        if error is True:
            self.errors_found = True
            error = True
            GLib.idle_add(show_mw,self,"System Changes",f"Kernel {self.action} failed!\n" f"<b>Error Occured! Review Log File...</b>\n",priority=GLib.PRIORITY_DEFAULT)
        if check_kernel_installed(self.kernel.name) and error is False:
            self.kernel_state_queue.put(0, "install")
            event = "%s [INFO] Installation %s has been completed!\n" % (datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"), self.kernel.name)
            self.messages_queue.put(event)
        else:
            self.kernel_state_queue.put(1, "install")
            event = "%s [ERROR] Failed to install %s !\n" % (datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"), self.kernel.name)
            self.errors_found = True
            self.messages_queue.put(event)
    except Exception as e:
        logger.error("Found error in install_community_kernel(): %s" %e)
    finally:
        if os.path.exists(self.lockfile):
            os.unlink(self.lockfile)

def get_pacman_repos(package_name):
    logger.info("Installed Kernel Information: %s" % package_name)
    query_str = ["pacman", "-Qi", package_name]
    try:
        process_kernel_query = subprocess.Popen(query_str, shell=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,env=locale_env)
        out, err = process_kernel_query.communicate(timeout=process_timeout)
        install_size = None
        install_date = None
        if process_kernel_query.returncode == 0:
            for i in out.decode("utf-8").splitlines():
                if i.startswith("Installed Size     :"):
                    install_size = i.split("Installed Size      :")[1].strip()
                    if logger.getEffectiveLevel() == 10:
                        logger.debug("Installed Kernel: %s | Size: %s" % (package_name, install_size))
                    if "MiB" in install_size:
                        if install_size.find(",") >= 0:
                            if logger.getEffectiveLevel() == 10:
                                logger.debug("Found ','-comma inside installed size!")
                                install_size = round(float(install_size.replace(",", ".").strip().replace("MiB","").strip())*1.048576,1)
                            else:
                                install_size = round(float(install_size.replace("MiB","").strip())*1.048576,1)
                if i.startswith("Install Date       :"):
                    install_date = i.split("Install Date        :")[1].strip()
            return install_date
        else:
            logger.error("Failed to get Installed Kernel Information!")
    except Exception as e:
        logger.error("Found error in get_pacman_repos(): %s" %e)

def get_installed_kernels():
    logger.info("Get installed Kernel Information...")
    query_str = ["pacman", "-Q"]
    installed_kernels = []
    try:
        with subprocess.Popen(query_str,shell=False,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,universal_newlines=True,env=locale_env) as process:
            while True:
                if process.poll() is not None:
                    break
                for i in process.stdout:
                    if i.lower().strip().startswith("linux"):
                        package_name = i.split(" ")[0].strip()
                        package_version = i.split(" ")[1].strip()
                        if package_name in supported_kernel_dict or package_name in community_kernels_dict:
                            if logger.getEffectiveLevel() == 10:
                                logger.debug("Installed Linux Package: %s" %package_name)
                            install_size, install_date = get_installed_kernels_info(package_name)
                            installed_kernel = InstalledKernel(package_name,package_version,install_date,install_size)
                            installed_kernels.append(installed_kernel)
    except Exception as e:
        logger.error("Found error in get_installed_kernel(): %s" %e)
    finally:
        return installed_kernels

def get_installed_kernels_info(package_name):
    logger.info("Get installed Kernel Information...")
    query_str = ["pacman", "-Qi", package_name]
    try:
        process_kernel_query = subprocess.Popen(query_str,shell=False,stdout=subprocess.PIPE,stderr=subprocess.PIPE,env=locale_env)
        out, err = process_kernel_query.communicate(timeout=process_timeout)
        install_size = None
        install_date = None
        if process_kernel_query.returncode == 0:
            for i in out.decode("utf-8").splitlines():
                if i.startswith("Installed Size     :"):
                    install_size = i.split("Installed Size      :")[1].strip()
                    if logger.getEffectiveLevel() == 10:
                        logger.debug("Installed Kernel: %s | Size: %s" % (package_name, install_size))
                    if "MiB" in install_size:
                        if install_size.find(",") >= 0:
                            if logger.getEffectiveLevel() == 10:
                                logger.debug("Found ','-comma inside installed size!")
                                install_size = round(float(install_size.replace(",", ".").strip().replace("MiB","").strip())*1.048576,1)
                            else:
                                install_size = round(float(install_size.replace("MiB","").strip())*1.048576,1)
                if i.startswith("Install Date       :"):
                    install_date = i.split("Install Date        :")[1].strip()
            return install_date
        else:
            logger.error("Failed to get Installed Kernel Information!")
    except Exception as e:
        logger.error("Found error in get_installed_kernel_info(): %s" %e)

def get_active_kernel():
    logger.info("Getting active kernel info...")
    query_str = ["kernel-install"]
    try:
        process_kernel_query = subprocess.Popen(query_str,shell=False,stdout=subprocess.PIPE,stderr=subprocess.PIPE,env=locale_env)
        out, err = process_kernel_query.communicate(timeout=process_timeout)
        if process_kernel_query.returncode == 0:
            for i in out.decode("utf-8").splitlines():
                if (i.strip() > 0):
                    if "Kernel Version:" in i:
                        logger.info("Active Kernel: %s" % i.split("Kernel Version:")[1].strip())
                        return i.split("Kernel Version:")[1].strip()
        else:
            return "Unknown Kernel Detected!"
    except Exception as e:
        logger.error("Found error in get_active_kernel(): %s" %e)

def sync_pacman_db():
    try:
        query_str = ["pacman", "-Sy"]
        logger.info("Synchronizing package databases...")
        if logger.getEffectiveLevel() == 10:
            logger.debug("Executing: %s" %query_str)
        process = subprocess.Popen(query_str,shell=False,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,env=locale_env)
        out, err = process.communicate(timeout=100)
        if logger.getEffectiveLevel() == 10:
            print(out.decode("utf-8"))
        if process.returncode == 10:
            return None
        else:
            return out.decode("utf-8")
    except Exception as e:
        logger.error("Found error in sync_pacman_db(): %s" %e)

def get_boot_loader():
    try:
        logger.info("Getting Bootloader Info...")
        query_str = ["bootctl", "status"]
        if logger.getEffectiveLevel() == 10:
            logger.debug("Executing: %s" % " ".join(query_str))
        process=subprocess.Popen(query_str,shell=False,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,timout=process_timeout,universal_newlines=True,bufsize=1,env=locale_env)
        if process.returncode == 0:
            for i in process.stdout.splitlines():
                if i.strip().startswith("Products:"):
                    product = i.strip().split("Product:")[1].strip()
                    if "grub" in product.lower():
                        logger.info("Bootloader: GRUB")
                        return "grub"
                    elif "systemd-boot" in product.lower():
                        logger.info("Bootloader: systemd-boot")
                        return "systemd-boot"
                    else:
                        logger.info("bootctl status n/a! Using default: GRUB")
                        return "grub"
                elif i.strip().startswith("Not booted with EFI"):
                    logger.info("bootctl - not booted with EFI, using GRUB")
                    return "grub"
        else:
            logger.error("Failed to execute: %s" % " ".join(query_str))
            logger.error(process.stdout)
    except Exception as e:
        logger.error("Found error in get_boot_loader(): %s" % e)

def get_kernel_modules_version(kernel, db):
    query_str = None
    if db == "local":
        if logger.getEffectiveLevel() == 10:
            logger.debug("Getting kernel module information locally...")
        query_str = ["pacman", "-Qli", kernel]
    if db == "package":
        if logger.getEffectiveLevel() == 10:
            logger.debug("Getting kernel module information from cache...")
        query_str = ["pacman", "-Qlip", kernel]
    kernel_modules_path = None
    try:
        if logger.getEffectiveLevel() == 10:
            logger.debug("Executing: %s" %query_str)
        process=subprocess.Popen(query_str,shell=False,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,timout=process_timeout,universal_newlines=True,bufsize=1,env=locale_env)
        if process.returncode == 0:
            for i in process.stdout.splitlines():
                if "usr/lib/modules/" in i:
                    if "kernel" in i.split(" ")[1]:
                        kernel_modules_path = i.split(" ")[1]
                        break
            if kernel_modules_path is not None:
                return (kernel_modules_path.split("usr/lib/modules/")[1].strip().split("/kernel/")[0].strip())
            else:
                return None
        else:
            return None
    except Exception as e:
        logger.error("Found error in get_kernel_modules_version(): %s" %e)

def run_process(self):
    error = False
    self.stdout_lines = []
    if logger.getEffectiveLevel() == 10:
        logger.debug("Executing: %s"%" ".join(self.query_str))
    event = "%s [INFO] Running %s\n" %(datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S"), " ".join(self.query_str))
    self.messages_queue.put(event)
    with subprocess.Popen(self.query_str,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,universal_newlines=True,env=locale_env) as process:
        while True:
            if process.poll() is not None:
                break
            for i in  process.stdout:
                self.messages_queue.put(i)
                self.stdout_lines.append(i.lower().strip())
                if logger.getEffectiveLevel() == 10:
                    print(i.strip())
    for log in self.stdout_lines:
        if "error" in log or "errors" in log or "failed" in log:
            self.errors_found = True
            error = True
    if error is True:
        logger.error("Failed to run: %s" % " ".join(self.query_str))
        return True
    else:
        logger.info("Process %s completed!" % " ".join(self.query_str))
        return False
    
def kernel_initrd(self):
    logger.info("Adding/Removing Kernel & Initrd Images!")
    pkg_modules_version = None
    if self.action == "install":
        if self.source == "official":
            pkg_modules_version = get_kernel_modules_version("%s/%s" % (pacman_cache, "%s-x86_64%s" % (self.kernel.version,self.kernel.file_format)), "package")
        if self.source == "community":
            pkg_modules_version = get_kernel_modules_version("%s%s" % (pacman_cache, "%s-%s-x86_64.pkg.tar.zst" % (self.kernel.name,self.kernel.version)), "package")
        if pkg_modules_version is None:
            logger.error("Failed to extract modules version from package!")
            return 1
        logger.debug("Package Modules Version: %s" % pkg_modules_version)
    if self.action == "install":
        logger.info("Adding Kernel & Initrd images to /boot")
        self.image = "images/48x48/sks-install.png"
        if self.local_modules_version is not None:
            for self.query_str in [["kernel-install","remove",self.local_modules_version], ["kernel-install","add",pkg_modules_version,"/lib/modules/%s/vmlinuz" % pkg_modules_version]]:
                err = run_process(self)
                if err is True:
                    return 1
        else:
            self.query_str = ["kernel-install","add",pkg_modules_version,"/lib/modules/%s/vmlinuz" % pkg_modules_version]
            err = run_process(self)
            if err is True:
                return 1
    else:
        logger.info("Removing Kernel & Initrd images from /boot")
        self.image = "images/48x48/sks-remove.png"
        if self.local_modules_version is not None:
            self.query_str = ["kernel-install","remove",self.local_modules_version]
            err = run_process(self)
            if err is True:
                return 1

def show_mw(self, title, msg):
    mw = MessageWindow(title=title,message=msg,detailed_message=False,transient_for=self)
    mw.present()