""" Wireguard Classes and Method for Wire-Py """

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


''' 1 = 1. Year, 09 = Month of the Year, 2924 = Day and Year of the Year '''
version = 'v. 1.10.2124'

path_to_file = Path('/etc/wire_py/wg_py')
path_to_file2 = Path('/etc/wire_py/settings')
path_to_file3 = Path('/etc/wire_py/theme')
_u = Path.read_text(Path('/tmp/_u'))

UPDATE_API_URL = 'https://git.ilunix.de/api/v1/repos/punix/Wire-Py/releases'


class WirePyUpdate:
    @staticmethod
    def api_down():
        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 'Update on' 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():
        try:
            url = f'https://git.ilunix.de/punix/Wire-Py/archive/{res}.zip'
            to_down = 'wget -qP ' + str(_u) + ' ' + url
            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/wp-icons/64/info.png'
                ii = r'/usr/share/icons/wp-icons/48/wg_vpn.png'
                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/wp-icons/64/error.png'
                ii = r'/usr/share/icons/wp-icons/48/wg_msg.png'
                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/wp-icons/64/error.png'
            ii = r'/usr/share/icons/wp-icons/48/wg_msg.png'
            wt = 'Download error'
            msg_t = 'Download failed! No internet connection!'
            msg_window(iw, ii, wt, msg_t)


res = WirePyUpdate.api_down()


def msg_window(img_w, img_i, w_title, w_txt):
    """
    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/wp-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
    """

    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)
    msg.i_window.grid(column=0, row=0)
    label = tk.Label(msg, text=w_txt)
    label.config(font=('Ubuntu', 11), padx=15)
    label.grid(column=1, row=0)
    button = ttk.Button(msg, text='OK', command=msg.destroy, padding=4)
    button.config()
    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 GreenLabel:
    """
    Show the active tunnel in green in the label
    """

    def __init__(self):
        self.StrVar = None
        self.lb_tunnel = None

    def green_show_label(self):
        with open(path_to_file3, 'r') as read_file:
            if 'light' in read_file:
                self.lb_tunnel = ttk.Label(self, textvariable=self.StrVar, foreground='green')

            else:
                self.lb_tunnel = ttk.Label(self, textvariable=self.StrVar, foreground='yellow')

        self.lb_tunnel.config(font=('Ubuntu', 11, 'bold'))
        self.lb_tunnel.grid(column=2, padx=10, row=1)
        self.columnconfigure(2, weight=1)
        self.rowconfigure(0, weight=1)

    def columnconfigure(self, param, weight):
        pass

    def rowconfigure(self, param, weight):
        pass


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

    @classmethod
    def covert_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


class TunnelActiv:
    """
    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


class ShowAddress:
    """
    Displays the value address, DNS and peer in the labels
    or empty it again
    """

    def __init__(self):
        self.lb_frame2 = None
        self.lb_frame = None
        self.endpoint = None
        self.dns = None
        self.address = None
        self.enp = None
        self.DNS = None
        self.add = None

    def init_and_report(self, data=None):
        """ Address Label """
        self.add = tk.StringVar()
        self.add.set('Address:    ' + data[0])
        self.DNS = tk.StringVar()
        self.DNS.set('       DNS:    ' + data[1])
        self.enp = tk.StringVar()
        self.enp.set('Endpoint:    ' + data[2])

    def label_empty(self):
        self.add.set('')
        self.DNS.set('')
        self.enp.set('')

    def show_data(self):
        """ Address Label """
        self.address = ttk.Label(self.lb_frame, textvariable=self.add, foreground='#0071ff')
        self.address.grid(column=0, row=5, sticky='w', padx=10, pady=6)
        self.address.config(font=('Ubuntu', 9))

        ''' DNS Label '''
        self.dns = ttk.Label(self.lb_frame, textvariable=self.DNS, foreground='#0071ff')
        self.dns.grid(column=0, row=7, sticky='w', padx=10, pady=6)
        self.dns.config(font=('Ubuntu', 9))

        ''' Endpoint Label '''
        self.endpoint = ttk.Label(self.lb_frame2, textvariable=self.enp, foreground='#0071ff')
        self.endpoint.grid(column=0, row=8, sticky='w', padx=10, pady=20)
        self.endpoint.config(font=('Ubuntu', 9))


class ListTunnels:
    """
    Shows all existing Wireguard tunnels
    """

    @staticmethod
    def tl_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


class FileHandle:
    """
    This class will display the autostart label which
    Tunnel is automatically started regardless of the active tunnel.
    The selected tunnel is written into a file to read it after the start of the system.
    """

    def __init__(self):

        self.wg_autostart = None
        self.autoconnect = None
        self.auto_con = None
        self.autoconnect_var = None
        self.tl = None
        self.selected_option = None
        self.l_box = None

    def box_set(self):

        try:
            select_tunnel = self.l_box.curselection()
            select_tl = self.l_box.get(select_tunnel[0])

            if self.selected_option.get() == 0:
                Path.unlink(path_to_file)
                tl = ListTunnels.tl_list()

                if len(tl) == 0:
                    self.wg_autostart.configure(state='disabled')

            if self.selected_option.get() >= 1:
                Path.write_text(path_to_file, select_tl)

        except IndexError:
            self.selected_option.set(1)

        OnOff.on_off(self)


class OnOff:
    """
    Here it is checked whether the path to the file is there if not it is created.
    Set (on), the selected tunnel is displayed in the label.
    At (off) the label is first emptied then filled with No Autoconnect
    """

    def __init__(self):

        self.wg_autostart = None
        self.selected_option = None
        self.auto_con = None
        self.autoconnect = None
        self.autoconnect_var = None
        self.lb_frame_buttons = None

    def on_off(self):

        if Path.exists(path_to_file):
            self.selected_option.set(1)
            self.autoconnect_var.set('')
            if not Path.is_dir(Path('/etc/wire_py')):
                Path.mkdir(Path('/etc/wire_py'))
            self.auto_con = Path.read_text(path_to_file)

        else:

            self.wg_autostart.configure(state='disabled')
            self.auto_con = 'no Autoconnect'
        self.autoconnect_var.set('')
        self.autoconnect_var = tk.StringVar()
        self.autoconnect_var.set(self.auto_con)

        self.autoconnect = ttk.Label(self, textvariable=self.autoconnect_var, foreground='#0071ff')
        self.autoconnect.config(font=('Ubuntu', 11))
        self.autoconnect.grid(column=0, row=4, sticky='ne', pady=19)


class ExportTunnels:
    """
    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 wg_export():
        _u1 = str(_u[6:])
        now_time = datetime.now()
        now_datetime = now_time.strftime('wg-exp-' + '%m-%d-%Y' + '-' + '%H:%M')
        tl = ListTunnels.tl_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', missing_ok=True)
                Path.unlink(Path(source) / 'theme', 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/wp-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/wp-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/wp-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