#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@Contact :   liuyuqi.gov@msn.cn
@Time    :   2021/01/28 20:47:55
@License :   Copyright © 2017-2020 liuyuqi. All Rights Reserved.
@Desc    :   wifi 转化为 QRcode 方便扫码连接wifi。
'''

import re,os,sys
import qrcode

import pathlib
import subprocess
from shutil import which

def getSSID():
    if sys.platform == "darwin":
        airport = pathlib.Path(
            "/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport")
        if not airport.is_file():
            print_error(f"Can't find 'airport' command at {airport}")

        ssid = run_command(
            f"{airport} -I | awk '/ SSID/ {{print substr($0, index($0, $2))}}'")
        ssid = ssid.replace("\n", "")

    elif sys.platform == "linux":
        if which("iwgetid") is not None:
            print_error("Can't find the 'iwgetid' command")

        ssid = run_command("iwgetid -r")
        ssid = ssid.replace("\n", "")

    elif sys.platform == "win32":
        ssid = run_command(
            "netsh wlan show interfaces | findstr SSID").replace("\r", "")
        ssid = re.findall(r"[^B]SSID\s+:\s(.*)", ssid)[0]
    return ssid

def getPasswordWithSSID(ssid):
    if sys.platform == "darwin":
        password = run_command(
            f"security find-generic-password -l \"{ssid}\" -D 'AirPort network password' -w")
        password = password.replace("\n", "")

    elif sys.platform == "linux":
        # Check if the user is running with super user privilages
        if os.geteuid() != 0:
            print_error(f"You need to run '{sys.argv[0]}' as root")

        password = run_command(f"cat /etc/NetworkManager/system-connections/{ssid} | grep psk=")
        password = password.replace("\n", "")

    elif sys.platform == "win32":
        password = run_command(f"netsh wlan show profile name=\"{ssid}\" key=clear | findstr Key").replace("\r", "")
        password = re.findall(r"Key Content\s+:\s(.*)", password)[0]

    if password == "":
        print_error("Cound not find password")

    return password

def genQRCode(text):
    qr = qrcode.QRCode(version=1,
                       error_correction=qrcode.constants.ERROR_CORRECT_L,
                       box_size=10,
                       border=4)
    qr.add_data(text)

    if image:
        file_name = ssid.replace(" ", "_") + ".png"
        img = qr.make_image()
        img.save(file_name)
        print(f"QR code has been saved to {file_name}")
    else:
        qr.make()
        qr.print_tty()


def run_command(command):
    output, _ = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, shell=True).communicate()
    return output.decode("utf-8")

if __name__ == "__main__":
    ssid=getSSID()
    if(ssid!=""):
        password=getPasswordWithSSID(ssid)
        text = f"WIFI:T:WPA;S:{ssid};P:{password};;"
        genQRCode(text)
    else:
        print("Please connect to Wifi.")