# -*- coding: utf-8 -*-
from setuphelpers import *
import platform
import bs4 as BeautifulSoup

# informations on the new MSI installer: https://community.openvpn.net/openvpn/wiki/OpenvpnMSIInstaller

# declaring global variables - warnings: 1) wapt context is only available in package functions; 2) global variables are not persistent between calls
bin_contains = 'OpenVPN'


def install():
    # declaring local variables
    package_version = control.get_software_version()
    bin_name = glob.glob('*%s*.msi' % bin_contains)[0]

    # adding "OpenVPN Inc."" and "WireGuard LLC" trusted driver certificates
    try:
        run('"%s" -addstore TrustedPublisher "%s"' % (makepath(system32, 'certutil.exe'), makepath(basedir, 'openvpn.cer')), timeout=60)
        run('"%s" -addstore TrustedPublisher "%s"' % (makepath(system32, 'certutil.exe'), makepath(basedir, 'wireguard.cer')), timeout=60)
    except:
        print("WARNING: Required Publisher Driver certificates have not been applied, you may need to apply them manually or with GPO")

    # uninstalling other/older versions is not being required since the MSI seems to do it by himself

    # installing the package
    print("Installing: %s" % bin_name)
    install_msi_if_needed(bin_name,
        min_version=package_version,
    )

    # removing desktop shortcut
    remove_desktop_shortcut('OpenVPN GUI')


def uninstall():
    # removing "OpenVPN Inc."" and "WireGuard LLC" trusted driver certificates
    try:
        run('"%s" -delstore TrustedPublisher "OpenVPN Inc."' % (makepath(system32, 'certutil.exe')), timeout=60)
        run('"%s" -delstore TrustedPublisher "WireGuard LLC"' % (makepath(system32, 'certutil.exe')), timeout=60)
    except:
        print("WARNING: Driver certificates have not been removed")


def update_package():
    # declaring local variables
    result = False
    proxies = get_proxies()
    if not proxies:
        proxies = get_proxies_from_wapt_console()
    app_name = control.name
    url = 'https://openvpn.net/community-downloads/'
    if control.architecture == 'x64':
        arch = 'amd64'
    else:
        arch = 'x86'

    # getting latest version from official sources
    print("URL used is: %s" % url)
    for bs_search in bs_find_all(url, 'a', 'class', 'ov-button w-100', proxies=proxies):
        if bin_contains in bs_search.string and arch in bs_search.string and bs_search.string.endswith('.msi'):
            version = bs_search['href'].split('-')[1]
            latest_bin = bs_search.string
            url_dl = bs_search['href']
            break

    print("Latest %s version is: %s" % (app_name, version))
    print("Download url is: %s" % url_dl)

    # downloading latest binaries
    if not isfile(latest_bin):
        print("Downloading: %s" % latest_bin)
        wget(url_dl, latest_bin, proxies=proxies)

    # changing version of the package
    if Version(version) != control.get_software_version():
        result = True
    control.version = '%s-%s' % (version, control.version.split('-', 1)[-1])
    #control.set_software_version(version)
    control.save_control_to_wapt()

    # deleting outdated binaries
    remove_outdated_binaries(version, filename_contains=arch)

    # validating or not update-package-sources
    return result



def get_proxies():
    r"""Return system proxy with the urllib python library

    >>> get_proxies()
    {'http': 'http://srvproxy.ad.domain.lan:8080',
    'https': 'http://srvproxy.ad.domain.lan:8080'}

    """
    if platform.python_version_tuple()[0] == '3':
        from urllib.request import getproxies
    else:
        from urllib import getproxies
    return getproxies()


def get_proxies_from_wapt_console():
    r"""Return proxy information from the current user WAPT console

    >>> get_proxies_from_wapt_console()
    {'http': 'http://srvproxy.ad.domain.lan:8080',
    'https': 'http://srvproxy.ad.domain.lan:8080'}

    """
    proxies = {}
    if platform.system() == 'Windows':
        waptconsole_ini_path = makepath(user_local_appdata(), 'waptconsole', 'waptconsole.ini')
    else:
        waptconsole_ini_path = makepath(user_home_directory(), '.config', 'waptconsole', 'waptconsole.ini')
    if isfile(waptconsole_ini_path):
        proxy_wapt = inifile_readstring(waptconsole_ini_path, 'global', 'http_proxy')
        if proxy_wapt:
            proxies = {'http': proxy_wapt, 'https': proxy_wapt}
    return proxies


def bs_find(url, element, attribute=None, value=None, user_agent=None, proxies=None, features='html.parser', **kwargs):
    r""""Parse html web page with BeautifulSoup and get the first result

    Args:
        url (str): url of the web page to parse
        element (str): searched element
        attribute (str): selected attribute of the element
        value (str): value of the selected attribute
        user_agent (str): specify a user-agent if needed
        proxies (dict): specify your proxy if needed
        **kwargs (str): joker for requests parameters
        features (str): bs feature to use


    >>> bs_find('https://www.w3.org/', 'a', 'title', 'Open Web Platform testing')['href']
    'https://web-platform-tests.org/'

    >>> bs_find('https://www.w3.org/', 'span', 'class', 'alt-logo').string
    'W3C'

    .. versionadded:: 2.0

    """
    import requests
    if user_agent:
        page = requests.get(url, proxies=proxies, headers={'User-Agent':'%s' % user_agent}, **kwargs).text
    else:
        page = requests.get(url, proxies=proxies, **kwargs).text
    soup = BeautifulSoup.BeautifulSoup(page, features=features)
    if value:
        return soup.find(element, {attribute: value})
    else:
        return soup.find(element)


def bs_find_all(url, element, attribute=None, value=None, user_agent=None, proxies=None, features='html.parser', **kwargs):
    r""""Parse html web page with BeautifulSoup and get a list of the result

    Args:
        url (str): url of the web page to parse
        element (str): searched element
        attribute (str): selected attribute of the element
        value (str): value of the selected attribute
        user_agent (str): specify a user-agent if needed
        proxies (dict): specify your proxy if needed
        **kwargs (str): joker for requests parameters
        features (str): bs feature to use


    >>> bs_find_all('https://www.w3.org/', 'a', 'title', 'Open Web Platform testing')[0]['href']
    'https://web-platform-tests.org/'

    >>> bs_find_all('https://www.w3.org/', 'span', 'class', 'alt-logo')[0].string
    'W3C'

    .. versionadded:: 2.0

    """
    import requests
    if user_agent:
        page = requests.get(url, proxies=proxies, headers={'User-Agent':'%s' % user_agent}, **kwargs).text
    else:
        page = requests.get(url, proxies=proxies, **kwargs).text
    soup = BeautifulSoup.BeautifulSoup(page, features=features)
    if value:
        return soup.find_all(element, {attribute:value})
    else:
        return soup.find_all(element)


def get_version_from_binary(filename, property_name='ProductVersion'):
    r""" Get installer version from file informations, for now, only exe and msi files are compatibles

    Args:
        filename (str): path to the file
        property_name (str): selected property

    Returns:
        str: version number

     """
    if filename.endswith('.msi'):
        return get_msi_properties(filename)[property_name]
    else:
        return get_file_properties(filename)[property_name]


def remove_outdated_binaries(version, filename_contains=None, list_extensions=['exe','msi','deb','rpm','dmg','pkg']):
    r"""Remove files based on the version contained in his filename

    Args:
        version (str): version number of keeped files
        filename_contains (str or list of str): Part of the filename that must be contained (useful for distinguishing architecture and os)
        list_extensions (str or list of str): file extensions of verified files

    Returns:
        None

    .. versionadded:: 2.0

    """
    if type(list_extensions) != list:
        list_extensions = [list_extensions]
    if filename_contains:
        if type(filename_contains) != list:
            filename_contains = [filename_contains]
    list_extensions = ['.' + ext for ext in list_extensions if ext[0] != '.']
    for file_ext in list_extensions:
        for bin_in_dir in glob.glob('*%s' % file_ext):
            if not version in bin_in_dir:
                remove_file(bin_in_dir)
            if filename_contains:
                for filename_contain in filename_contains:
                    if not filename_contain in bin_in_dir:
                        remove_file(bin_in_dir)