import requests
import urllib.parse
import time
from bs4 import BeautifulSoup

headers = {
    'Cookie': 'cnsc=0',
    'Content-Type': 'application/x-www-form-urlencoded',
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36'
}

url = "https://dualis.dhbw.de/scripts/mgrqispi.dll"


def checkUser(email: str, password: str):
    s = requests.Session()
    fpw = urllib.parse.quote(password, safe='', encoding=None, errors=None)
    fmail = urllib.parse.quote(email, safe='', encoding=None, errors=None)
    payload = 'usrname=' + fmail + '&pass=' + fpw + '&ARGUMENTS=clino%2Cusrname%2Cpass%2Cmenuno%2Cmenu_type%2Cbrowser%2Cplatform&APPNAME=CampusNet&PRGNAME=LOGINCHECK'
    response = s.post(url, headers=headers, data=payload)
    header = response.headers
    try:
        refresh = header["REFRESH"]
        arg = refresh.find("=-N") + 3
        komma = refresh[arg:].find(",")
    except KeyError:
        return -2, s
    token = refresh[arg:komma + arg]
    return token, s


def getKurs(token: int, cookie: str):
    try:
        headers["Cookie"] = "cnsc=" + cookie
        token = str(token)
        response = requests.request("GET",
                                    url + "?APPNAME=CampusNet&PRGNAME=COURSERESULTS&ARGUMENTS=-N" + token + ",-N000307,",
                                    headers=headers, data={})
        html = BeautifulSoup(response.text, 'lxml')
        link = html.body.find('a', attrs={'id': "Popup_details0001"})['href']
        response = requests.request("GET", url + link[21:], headers=headers, data={})
        html = BeautifulSoup(response.text, 'lxml')
        content = html.body.find('td', attrs={'class': 'level02'}).text
        start = content.find(" ") + 4
        end = start + (content[start:].find(" "))
        kurs = content[start:end]
    except:
        kurs = 0
    return kurs


def logOut(token: int, cookie: str):
    headers["Cookie"] = "cnsc=" + cookie
    response = requests.request("GET", url + "?APPNAME=CampusNet&PRGNAME=LOGOUT&ARGUMENTS=-N" + str(token) + ", -N001",
                                headers=headers, data={})



def checkLifetime(timecode: float):
    if time.time() - timecode > 1800:
        return False
    else:
        return True