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


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 = Tunnelliste # Hiermit wird jedes 4. Element der Liste gezeigt
    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:
            messagebox.showwarning(title="conf error", message="  Oh... no valid Wireguard File!\nPlease select a "
                                                               "valid Wireguard File  ")
    except EOFError:
        pass
    except TypeError:
        pass


def tl_list():
    wg_s = os.popen('nmcli con show | grep -iPo "(.*)(wireguard)"').read().split()
    tl = wg_s[::3]  # tl = Tunnelliste # Hiermit wird jedes 4. Element der Liste gezeigt
    return tl


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