""" Classes Method and functions for lx apps """

import gettext
import locale
import os
import shutil
import subprocess
import tkinter as tk
import zipfile
from datetime import datetime
from pathlib import Path
from tkinter import ttk
import requests

APP = 'cls_mth_fc'
LOCALE_DIR = "/usr/share/locale/"
locale.bindtextdomain(APP, LOCALE_DIR)
gettext.bindtextdomain(APP, LOCALE_DIR)
gettext.textdomain(APP)
_ = gettext.gettext

path_to_file2 = Path('/etc/wire_py/settings.conf')
_u = Path.read_text(Path('/tmp/_u'))


class GiteaUpdate:
    """
    Calling api_down requests the URL and version from the running script.
    Example: version = 'v. 1.1.1.1' GiteaUpdate.api_down(http://example.de, version)

    The call to download requests the download URL from the running script,
    the taskbar image for the Download OK window, the taskbar image for
    the Download Error window and the variable res
    """
    @staticmethod
    def api_down(update_api_url, version):
        try:
            response = requests.get(update_api_url)
            response_dict = response.json()
            response_dict = response_dict[0]
            with open(path_to_file2, 'r') as set_file:
                set_file = set_file.read()
                if 'on\n' in set_file:
                    if version[3:] != response_dict['tag_name']:
                        return response_dict['tag_name']
                    else:
                        return _('No Updates')
                else:
                    return 'False'
        except requests.exceptions.ConnectionError:
            return 'No Internet Connection!'

    @staticmethod
    def download(urld, down_ok_image, down_not_ok_image, res):
        try:
            to_down = 'wget -qP ' + str(_u) + ' ' + urld
            result = subprocess.call(to_down, shell=True)
            if result == 0:
                shutil.chown(str(_u) + f'/{res}.zip', 1000, 1000)
                """img_w, img_i, w_title, w_txt hand over"""
                iw = r'/usr/share/icons/lx-icons/64/info.png'
                ii = down_ok_image
                wt = _('Download Successful')
                msg_t = _('Your zip file is in home directory')
                msg_window(iw, ii, wt, msg_t)

            else:
                """img_w, img_i, w_title, w_txt hand over"""
                iw = r'/usr/share/icons/lx-icons/64/error.png'
                ii = down_not_ok_image
                wt = _('Download error')
                msg_t = _('Download failed! Please try again')
                msg_window(iw, ii, wt, msg_t)
        except subprocess.CalledProcessError:
            """img_w, img_i, w_title, w_txt hand over"""
            iw = r'/usr/share/icons/lx-icons/64/error.png'
            ii = down_not_ok_image
            wt = _('Download error')
            msg_t = _('Download failed! No internet connection!')
            msg_window(iw, ii, wt, msg_t)


def msg_window(img_w, img_i, w_title, w_txt, txt2=None, com=None):
    """
    Function for different message windows for the user. with 4 arguments to be passed.
    To create messages with your own images, icons, and titles. As an alternative to Python Messagebox.
    Paths to images must be specified: r'/usr/share/icons/lx-icons/64/info.png'
    img_w = Image for Tk Window
    img_i = Image for Icon
    w_title = Windows Title
    w_txt = Text for Tk Window
    txt2 = Text for Button two
    com = function for Button command
    """

    msg = tk.Toplevel()
    msg.resizable(width=False, height=False)
    msg.title(w_title)
    msg.configure(pady=15, padx=15)
    msg.img = tk.PhotoImage(file=img_w)
    msg.i_window = tk.Label(msg, image=msg.img)

    label = tk.Label(msg, text=w_txt)

    label.grid(column=1, row=0)

    if txt2 is not None and com is not None:
        label.config(font=('Ubuntu', 11), padx=15, justify='left')
        msg.i_window.grid(column=0, row=0, sticky='nw')
        button2 = ttk.Button(msg, text=f'{txt2}', command=com, padding=4)
        button2.grid(column=0, row=1, sticky='e', columnspan=2)
        button = ttk.Button(msg, text='OK', command=msg.destroy, padding=4)
        button.grid(column=0, row=1, sticky='w', columnspan=2)

    else:
        label.config(font=('Ubuntu', 11), padx=15)
        msg.i_window.grid(column=0, row=0)
        button = ttk.Button(msg, text='OK', command=msg.destroy, padding=4)
        button.grid(column=0, columnspan=2, row=1)

    img_i = tk.PhotoImage(file=img_i)
    msg.iconphoto(True, img_i)
    msg.columnconfigure(0, weight=1)
    msg.rowconfigure(0, weight=1)
    msg.winfo_toplevel()


class Tunnel:
    """
    Class of Methods for Wire-Py
    """

    """
    The config file is packed into a dictionary,
    to display the values Address , DNS and Peer in the labels
    """

    @classmethod
    def con_to_dict(cls, file):

        dictlist = []
        for lines in file.readlines():
            line_plit = lines.split()
            dictlist = dictlist + line_plit
        dictlist.remove('[Interface]')
        dictlist.remove('[Peer]')
        for items in dictlist:
            if items == '=':
                dictlist.remove(items)

        ''' Here is the beginning (Loop) of convert List to Dictionary '''
        for _ in dictlist:
            a = [dictlist[0], dictlist[1]]
            b = [dictlist[2], dictlist[3]]
            c = [dictlist[4], dictlist[5]]
            d = [dictlist[6], dictlist[7]]
            e = [dictlist[8], dictlist[9]]
            f = [dictlist[10], dictlist[11]]
            g = [dictlist[12], dictlist[13]]
            h = [dictlist[14], dictlist[15]]
            new_list = [a, b, c, d, e, f, g, h]
            final_dict = {}
            for elements in new_list:
                final_dict[elements[0]] = elements[1]

            ''' end... result a Dictionary '''

        address = final_dict['Address']
        dns = final_dict['DNS']
        if ',' in dns:
            dns = dns[:-1]
        endpoint = final_dict['Endpoint']
        if 'PresharedKey' in final_dict:
            pre_key = final_dict['PresharedKey']
        else:
            pre_key = final_dict['PreSharedKey']
        return address, dns, endpoint, pre_key

    """
    Shows the Active Tunnel
    """

    @staticmethod
    def active():

        active = os.popen('nmcli con show --active | grep -iPo "(.*)(wireguard)"').read().split()
        if not active:
            active = ''
        else:
            active = active[0]

        return active

    """
    Shows all existing Wireguard tunnels
    """

    @staticmethod
    def list():
        wg_s = os.popen('nmcli con show | grep -iPo "(.*)(wireguard)"').read().split()

        ''' tl = Tunnel list # Show of 4.Element in list '''
        tl = wg_s[::3]
        return tl

    """
    This will export the tunnels.
    A zipfile with current date and time is created
    in the user's home directory with correct right
    """

    @staticmethod
    def export():
        _u1 = str(_u[6:])
        now_time = datetime.now()
        now_datetime = now_time.strftime('wg-exp-' + '%m-%d-%Y' + '-' + '%H:%M')
        tl = Tunnel.list()

        try:
            if len(tl) != 0:
                wg_tar = str(_u) + '/' + now_datetime
                shutil.copytree('/etc/wire_py', '/tmp/wire_py', dirs_exist_ok=True)
                source = Path('/tmp/wire_py')
                Path.unlink(Path(source) / 'wg_py', missing_ok=True)
                Path.unlink(Path(source) / '.keys', missing_ok=True)
                Path.unlink(Path(source) / 'settings.conf', missing_ok=True)
                shutil.make_archive(wg_tar, 'zip', source)
                shutil.chown(wg_tar + '.zip', 1000, 1000)
                shutil.rmtree(source)
                with zipfile.ZipFile((wg_tar + '.zip'), 'r') as zf:
                    if len(zf.namelist()) != 0:

                        """img_w, img_i, w_title, w_txt hand over"""
                        iw = r'/usr/share/icons/lx-icons/64/info.png'
                        ii = r'/usr/share/icons/wp-icons/48/wg_vpn.png'
                        wt = _('Export Successful')
                        msg_t = _('Your zip file is in home directory')
                        msg_window(iw, ii, wt, msg_t)

                    else:

                        """img_w, img_i, w_title, w_txt hand over"""
                        iw = r'/usr/share/icons/lx-icons/64/error.png'
                        ii = r'/usr/share/icons/wp-icons/48/wg_msg.png'
                        wt = _('Export error')
                        msg_t = _('Export failed! Please try again')
                        msg_window(iw, ii, wt, msg_t)

            else:

                """img_w, img_i, w_title, w_txt hand over"""
                iw = r'/usr/share/icons/lx-icons/64/info.png'
                ii = r'/usr/share/icons/wp-icons/48/wg_msg.png'
                wt = _('Select tunnel')
                msg_t = _('Please first import tunnel.')
                msg_window(iw, ii, wt, msg_t)

        except TypeError:
            pass

    @staticmethod
    def if_tip():
        with open(path_to_file2, 'r') as set_file2:
            lines2 = set_file2.readlines()
            if 'False\n' in lines2:
                return False
            else:
                return True


tips = Tunnel.if_tip()