EPFL: Notify when a course state is changed on IS-Academia

isa.py

import sys
import time
import smtplib
import logging
from pyquery import PyQuery
from requests_html import HTMLSession


logging.basicConfig(filename='isa.log', format='[%(asctime)s] %(message)s', filemode='w', level=logging.INFO)
logger = logging.getLogger('isa')


UPDATE_PERIOD = 10
LOGIN_URL = 'https://isa.epfl.ch/imoniteur_ISAP/!logins.tryToConnect'
ISA_USER = '[email protected]'
ISA_PASS = 'secret_isa_password'
XML_URL = 'https://isa.epfl.ch/imoniteur_ISAP/!PORTAL14S.portalCell?ww_k_cell=1809191822'
COURSE_ID = '123456789'
EMAIL_PASSWORD = 'secret_gmail_password'
EMAIL_PORT = 587
EMAIL_ADDRESS = '[email protected]'
EMAIL_RECEIVER = '[email protected]'
EMAIL_MESSAGE = """\
Subject: The course state is changed

Hurry, https://isa.epfl.ch/imoniteur_ISAP/PORTAL14S.htm#tab26"""


def notify(length=5, period=0.2):
    for _ in range(length):
        sys.stdout.write('\a')
        sys.stdout.flush()
        time.sleep(period)


def main():
    first_pass = True
    session = HTMLSession()
    r = session.post(LOGIN_URL, {
        'ww_x_username': ISA_USER,
        'ww_x_password': ISA_PASS
    })
    print('Login state:', r)
    logging.info('Login state: ' + str(r))

    while True:
        req = session.get(XML_URL)

        pq = PyQuery(str(req.text.encode('utf-8')))
        course = pq('itemPlan') \
            .filter(lambda x, this: PyQuery(this).find('i_matiere').text() == COURSE_ID )

        enrolled = course.find('cell') \
            .filter(lambda x, this: PyQuery(this).find('c_variable').text() == 'NB_INSCRIT_SANS_MAX' ) \
            .find('x_data') \
            .text()

        if first_pass:
            print('Enrollemnt status:', enrolled)
            print('Verifying notifications...')
            notify()
            print('The script is checking in a loop...')
            first_pass = False

        logging.info('Enrollemnt status: ' + str(enrolled))

        if enrolled != 'cours complet':
            print('New state', enrolled)

            server = smtplib.SMTP('smtp.gmail.com', EMAIL_PORT)
            server.ehlo()
            server.starttls()
            server.login(EMAIL_ADDRESS, EMAIL_PASSWORD)
            server.sendmail(EMAIL_ADDRESS, EMAIL_RECEIVER, EMAIL_MESSAGE)
            server.close()

            notify(50)

        time.sleep(UPDATE_PERIOD)


if __name__ == '__main__':
    main()