"""Example app to login to GitHub, using the plain Browser class.

See example.py for an example using the more advanced StatefulBrowser."""
import argparse
import mechanicalsoup

parser = argparse.ArgumentParser(description="Login to GitHub.")
parser.add_argument("username")
parser.add_argument("password")
args = parser.parse_args()

browser = mechanicalsoup.Browser(soup_config={'features': 'lxml'})

# request github login page. the result is a requests.Response object
# http://docs.python-requests.org/en/latest/user/quickstart/#response-content
login_page = browser.get("https://github.com/login")

# similar to assert login_page.ok but with full status code in case of
# failure.
login_page.raise_for_status()

# login_page.soup is a BeautifulSoup object
# http://www.crummy.com/software/BeautifulSoup/bs4/doc/#beautifulsoup
# we grab the login form
login_form = mechanicalsoup.Form(login_page.soup.select_one('#login form'))

# specify username and password
login_form.input({"login": args.username, "password": args.password})

# submit form
page2 = browser.submit(login_form, login_page.url)

# verify we are now logged in
messages = page2.soup.find("div", class_="flash-messages")
if messages:
    print(messages.text)
assert page2.soup.select(".logout-form")

print(page2.soup.title.text)

# verify we remain logged in (thanks to cookies) as we browse the rest of
# the site
page3 = browser.get("https://github.com/MechanicalSoup/MechanicalSoup")
assert page3.soup.select(".logout-form")
