# -*- coding: utf-8 -*-
from setuphelpers import *
import requests

try:
    from waptenterprise.waptservice.enterprise import get_active_sessions, start_interactive_process
except:
    from waptservice.enterprise import get_active_sessions, start_interactive_process
import win32ts
import time

# Usable WAPT package functions: install(), uninstall(), session_setup(), audit(), update_package()
# Declaring global variables - Warnings: 1) WAPT context is only available in package functions; 2) Global variables are not persistent between calls
bin_contains = "TheDebianProject.DebianGNULinux_"
package_name = "TheDebianProject.DebianGNULinux"
app_name = "WSL Debian"


def install():
    # Declaring local variables
    package_version = control.get_software_version()
    bin_name = glob.glob("*%s*.AppxBundle" % bin_contains)[0]
    app_dir = makepath(programfiles, "WSL")
    wsl_debian = makepath(app_dir, bin_name)

    # Installing the package
    if not isdir(app_dir):
        mkdirs(app_dir)
    for bin_in_dir in glob.glob(makepath(app_dir, "*%s*" % bin_contains)):
        if bin_in_dir != wsl_debian:
            print("Removing %s" % bin_in_dir)
            remove_file(bin_in_dir)

    if not isfile(wsl_debian):
        print("Copying: %s in: %s" % (bin_name, app_dir))
        filecopyto(bin_name, app_dir)


def uninstall():
    # Declaring local variables
    app_dir = makepath(programfiles, "WSL")

    # Uninstalling the package
    print("Removing: %s (%s) for all users" % (package_name, app_name))
    run_powershell("Get-AppxPackage -Name %s -AllUsers | Remove-AppxPackage" % package_name)

    if not WAPT.list("wsl"):
        if isdir(app_dir):
            print("Removing: %s" % app_dir)
            mkdirs(app_dir)


def session_setup():
    # Declaring local variables
    package_version = control.get_software_version()
    app_dir = makepath(programfiles, "WSL")
    bin_path = glob.glob(makepath(app_dir, "*%s*.AppxBundle" % bin_contains))[0]

    # Installing the Appx in user environment
    try:
        installed_wsl_debian_version = run_powershell('Get-AppxPackage -Name "%s" | Select-Object version' % package_name)["Version"]
    except:
        installed_wsl_debian_version = "0.0.0.0"

    if package_version > installed_wsl_debian_version:
        print("Installing: %s (%s) for the current user" % (app_name, package_version))
        run_powershell('Add-AppxPackage -Path "%s"' % bin_path)


def audit():
    # Auditing the package
    for session_id in get_active_sessions():
        username = win32ts.WTSQuerySessionInformation(win32ts.WTS_CURRENT_SERVER_HANDLE, session_id, win32ts.WTSUserName)
        temp_file = r"C:\Windows\Temp\wsl-%s-whoami.txt" % (username)
        count = 0
        start_interactive_process("wsl", '--distribution Debian --exec whoami > "%s"' % temp_file, session_id=session_id, hide=True)
        while not isfile(temp_file):
            count = count + 1
            if count == 10:
                print("Unable to check WSL startup user for: %s" % username)
                break
            time.sleep(1)
        wsl_username = open(temp_file, "r").read().split("\n")[0]
        WAPT.write_audit_data_if_changed("wsl-debian", "wsl-startup-user_%s" % username, wsl_username, keep_days=180)
        WAPT.delete_audit_data("wsl-debian", "default-wsl-user_%s" % username)
        WAPT.delete_audit_data("wsl-debian", "%s-startup-wsl-user" % username)
        remove_file(temp_file)

        if wsl_username == "root":
            print("ERROR: WSL startup user is: %s and should be: %s, you must remediate to it" % (wsl_username, username))
            return "ERROR"
        elif wsl_username != username:
            print("WARNING: WSL startup user is: %s and should be: %s, you may encounter issues" % (wsl_username, username))
            return "WARNING"
        else:
            print("OK: WSL startup user is: %s for Windows user: %s" % (wsl_username, username))

    return "OK"


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_dl = "https://aka.ms/wsl-debian-gnulinux"
    latest_bin = requests.head(url_dl, proxies=proxies).headers["Location"].split("/")[-1]
    version = latest_bin.split("_")[-1].rsplit(".", 1)[0]

    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) > Version(control.get_software_version()):
        print("Software version updated (from: %s to: %s)" % (control.get_software_version(), Version(version)))
        result = True
    else:
        print("Software version up-to-date (%s)" % Version(version))
    control.version = "%s-%s" % (Version(version), control.version.split("-", 1)[-1])
    # control.set_software_version(version)
    control.save_control_to_wapt()

    # Deleting outdated binaries
    remove_outdated_binaries(version, "AppxBundle")

    # Validating update-package-sources
    return result