# Wireguard functions for Wire-Py
import os
import subprocess
from tkinter import filedialog
import tkinter as tk


class Message(tk.Tk):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.warning_pic = None
        self.x_width = 300
        self.y_height = 120
        self.monitor_center_x = self.winfo_screenwidth() / 2 - (self.x_width / 2)
        self.monitor_center_y = self.winfo_screenheight() / 2 - (self.y_height / 2)
        self.resizable(width=False, height=False)
        self.title('Import error!')
        self.configure()
        self.geometry('%dx%d+%d+%d' % (self.x_width, self.y_height, self.monitor_center_x, self.monitor_center_y))
        self.columnconfigure(0, weight=1)

        self.label = tk.Label(self, image=self.warning_pic, text='Oh... no valid Wireguard File!\nPlease select a '
                                                                 'valid Wireguard File')
        self.label.config(font=("Ubuntu", 11), padx=15, pady=15)
        self.label.grid(column=0, row=0)
        self.button = tk.Button(self, text="OK", command=self.destroy)
        self.button.config(padx=15, pady=5)
        self.button.grid(column=0, row=1)


def active():  # Shows the active tunnel
    a = os.popen('nmcli con show --active | grep -iPo "(.*)(wireguard)"').read().split()
    if not a:
        a = ''
        return a
    else:
        a = a[0]
        return a


a = active()


def tl_list():
    wg_s = os.popen('nmcli con show | grep -iPo "(.*)(wireguard)"').read().split()
    tl = wg_s[::3]  # tl = Tunnel list # Show of 4.Element in list
    return tl


def wg_import_select():
    try:
        filepath = filedialog.askopenfilename(initialdir=os.environ['HOME'], title="Select Wireguard config File",
                                              filetypes=[("WG config files", "*.conf")])
        file = open(filepath, 'r')
        read = file.read()
        file.close()
        pathsplit = filepath.split("/")
        pathsplit1 = pathsplit[-1]
        if "PrivateKey = " in read and "PublicKey = " in read:
            if len(pathsplit1) > 17:
                pathsplit = pathsplit1[len(pathsplit1) - 17:]
                os.rename(filepath, os.environ['HOME'] + '/tester/' + str(pathsplit))
                os.system('nmcli connection down ' + str(a))
                os.system('nmcli connection import type wireguard file ' + os.environ['HOME'] + '/tester/' +
                          str(pathsplit))
                os.system('nmcli con mod ' + str(pathsplit[:-5]) + ' connection.autoconnect no')
            else:
                subprocess.call('cp ' + str(filepath) + ' ' + os.environ['HOME'] + '/tester/', shell=True)
                os.system('nmcli connection down ' + str(a))
                os.system('nmcli connection import type wireguard file ' + str(filepath))
                os.system('nmcli con mod ' + str(pathsplit1[:-5]) + ' connection.autoconnect no')
        if "PrivateKey = " not in read:
            Message()
    except EOFError:
        pass
    except TypeError:
        pass


def wg_export():
    try:
        wg_exp = os.popen('nmcli con show | grep -iPo "(.*)(wireguard)"').read().split()
        wg_exp = wg_exp[1]
        return wg_exp
    except IndexError:
        pass