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loris.py
executable file
·189 lines (156 loc) · 6.32 KB
/
loris.py
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#!/usr/bin/env python
from time import sleep
from datetime import datetime
from selenium import webdriver
from selenium.webdriver.support.ui import Select
from selenium.webdriver.common.keys import Keys
class LoginError(Exception):
pass
class RegistrationError(Exception):
pass
def login_required(func_to_wrap):
def check_logged_in(cls, *f_args, **f_kwargs):
if getattr(cls, 'is_logged_in', False):
func_to_wrap(cls, *f_args, **f_kwargs)
else:
func_name = func_to_wrap.__name__
msg = 'You must be logged in to invoke `{0}`'.format(func_name)
raise LoginError(msg)
return check_logged_in
def select_term_required(func_to_wrap):
def check_term_selected(cls, *f_args, **f_kwargs):
if getattr(cls, 'term_selected', False):
func_to_wrap(cls, *f_args, **f_kwargs)
else:
func_name = func_to_wrap.__name__
msg = 'You must select a term to invoke `{0}`'.format(func_name)
raise LoginError(msg)
return check_term_selected
class Loris(object):
def __init__(self):
self.driver = webdriver.PhantomJS('phantomjs', service_log_path='/tmp/ghostdriver.log')
self.is_logged_in = False
self.term_selected = False
def quit(self):
self.driver.quit()
def login(self, student_num, pin):
d = self.driver
# login page
d.get('https://loris.wlu.ca/ssb_prod/twbkwbis.P_ValLogin')
# enter student number
uid_input = d.find_element_by_id('UserID')
uid_input.send_keys(str(student_num))
# enter password
pin_input = d.find_element_by_name('PIN')
pin_input.send_keys(str(pin))
# submit form
form = d.find_element_by_name('loginform')
form.submit()
if 'Authorization Failure' in d.page_source:
raise LoginError('got Authorization Failure')
self.is_logged_in = True
@login_required
def select_term(self, term):
d = self.driver
d.get('https://loris.wlu.ca/ssb_prod/bwskflib.P_SelDefTerm')
dropdown = Select(d.find_element_by_id('term_id'))
dropdown.select_by_value(term)
d.find_elements_by_css_selector('form')[1].submit()
self.term_selected = True
def _get_courses_info_if_on_register_page(self):
d = self.driver
def get_course_info(c):
status = c.find_element_by_css_selector('td:nth-child(1)').text
reg_status, date_str = status.split(' on ')
date = datetime.strptime(date_str, "%b %d,%Y")
crn = c.find_element_by_css_selector('td:nth-child(3)').text
subj = c.find_element_by_css_selector('td:nth-child(4)').text
crscode = c.find_element_by_css_selector('td:nth-child(5)').text
title = c.find_element_by_css_selector('td:nth-child(10)').text
return {
'status': reg_status.strip(),
'date': date,
'crn': crn.strip(),
'subject': subj.strip(),
'course_code': crscode.strip(),
'title': title.strip()
}
courses = d.find_elements_by_css_selector(
'table[summary*="Current Schedule"] tbody tr:not(:first-child)'
)
return [get_course_info(c) for c in courses]
def _print_schedule_if_on_register_page(self, courses_info):
def sort(info):
return info['subject'] + info['course_code']
def print_course(c):
s = "{0:28} {1:2}{2:3} {3:6} {4}"
print s.format(
"{0} on {1}".format(c['status'], c['date'].strftime("%b %d, %Y")),
c['subject'], c['course_code'],
"(%s)" % c['crn'], c['title']
)
enrolled = []
rest = []
for c in courses_info:
if c['status'] == '**Enrolled**': enrolled.append(c)
else: rest.append(c)
for c in enrolled: print_course(c)
print ""
for c in rest: print_course(c)
@select_term_required
def register_course(self, crn=540):
d = self.driver
d.get('https://loris.wlu.ca/ssb_prod/bwskfreg.P_AltPin')
crn_input_element = d.find_element_by_id('crn_id1')
crn_input_element.send_keys(str(crn))
submit_changes = d.find_element_by_css_selector(
'input[value*="Submit Changes"]'
)
submit_changes.click()
sleep(2)
if 'Registration Add Errors' in d.page_source:
err = d.find_element_by_css_selector(
'table[summary*="Registration Errors"] tr:not(:first-child) td:first-child'
)
raise RegistrationError(err.text)
courses_info = self._get_courses_info_if_on_register_page()
course_info = [c for c in courses_info if c['crn'] == str(crn)]
assert len(course_info) == 1, 'Course matching CRN {0} was not found'.format(crn)
course_info = course_info[0]
if '**Enrolled**' in course_info['status']:
# hooray!
self._print_schedule_if_on_register_page(courses_info)
else:
msg = 'Something went wrong for course {0}. Status is {1}'\
.format(crn, course_info['status'])
raise RegistrationError(msg)
@select_term_required
def print_schedule(self):
d = self.driver
d.get('https://loris.wlu.ca/ssb_prod/bwskfreg.P_AltPin')
courses_info = self._get_courses_info_if_on_register_page()
self._print_schedule_if_on_register_page(courses_info)
if __name__ == '__main__':
import sys
from credentials import STUDENT_NUM, PIN
loris = Loris()
# fall 2015: 201509
# winter 2016: 201601
# spring 2016: 201605
TERM = '201509'
loris.login(STUDENT_NUM, PIN)
loris.select_term(TERM)
if len(sys.argv) == 1: # no args provided
print "Usage:"
print " loris [CRN] -- will attempt to register for given CRN\n"
loris.print_schedule()
loris.quit()
sys.exit()
CRN = sys.argv[1] if len(sys.argv) >= 2 else '540'
print "Attempting to register for CRN {0} in term {1}".format(CRN.strip(), TERM)
try:
loris.register_course(CRN)
except RegistrationError as e:
# only wanna quit if it fails as per usual
loris.quit()
print "Registration Error: {0}".format(str(e))