import pytest
from bs4 import BeautifulSoup
from imaginaerraum_door_admin.door_handle import DoorHandle
import re

def test_login(browser, live_server):
    response = browser.get(f'http://localhost:{live_server.port}')

    assert '<h1>Space Zugangsverwaltung</h1>' in browser.page_source

    response = browser.get(f'http://localhost:{live_server.port}/login')

    email_form = browser.find_element_by_id('email').send_keys('gandalf@shire.me')
    password_form = browser.find_element_by_id('password').send_keys('shadowfax')
    submit_button = browser.find_element_by_id('submit').click()

    assert 'Tür öffnen' in browser.page_source


def extract_csrf_token(response):
    soup = BeautifulSoup(response.data)
    csrf_token = soup.find('input', attrs={'id': 'csrf_token'})['value']
    return csrf_token


def headless_login(client, user='gandalf@shire.me', password='shadowfax'):
    # extract csrf token from the login page source
    response = client.get('/login')
    csrf_token = extract_csrf_token(response)

    # send login information
    payload = {
         'csrf_token': csrf_token,
         'email': user,
         'password': password
    }
    return client.post('/login', data=payload, follow_redirects=True)


def test_login_headless(client):
    response = headless_login(client)
    soup = BeautifulSoup(response.data)

    # make sure login succeeded -> Tür öffnen button will appear
    assert any(['Tür öffnen' in link.contents[0] for link in soup.findAll('a', attrs={'class': ['btn'], 'role': 'button'})])


@pytest.fixture
def client_authenticated(client):
    # log in using admin account for testing
    headless_login(client)

    yield client

@pytest.mark.parametrize("url,function", [('/open', 'open_door'), ('/close', 'close_door')])
def test_access_door_button(client_authenticated, mocker, url, function):
    mocker.patch('imaginaerraum_door_admin.door_handle.DoorHandle.' + function)

    # visit route for open
    client_authenticated.get(url)

    # make sure the open method was called
    getattr(DoorHandle, function).assert_called_once_with(user='gandalf')


@pytest.mark.parametrize("url,function", [('/open', 'open_door'), ('/close', 'close_door')])
def test_access_door_unauthenticated(client, mocker, url, function):
    # test for trying to visit opening/closing door while not logged in
    mocker.patch('imaginaerraum_door_admin.door_handle.DoorHandle.' + function)

    # visit route for open
    response = client.get(url, follow_redirects=True)

    # we should get redirected to login page
    assert 'login' in response.request.url

    # the open door function should not be called
    getattr(DoorHandle, function).assert_not_called()


def test_manage_admins(client_authenticated):
    # visit admin management page
    response = client_authenticated.get('/manage_admins')

    assert "Nutzer Übersicht" in response.data.decode()
    assert "gandalf" in response.data.decode()
    assert "gandalf@shire.me" in response.data.decode()


def test_create_admin(client_authenticated):
    # visit admin management page
    response = client_authenticated.get('/manage_admins')
    csrf_token = extract_csrf_token(response)

    # post data for creating a new admin
    payload = {'name': 'bilbo',
               'email': 'bilbo@shire.me',
               'csrf_token': csrf_token}
    response = client_authenticated.post('/manage_admins', data=payload,
                                         follow_redirects=True)

    # after the new admin user is created, we should have been redirected to the
    # /manage_admin page. there, the password for login is displayed
    # we test if the newly created user can log in with that password
    # extract password displayed on the page
    match = re.search('Passwort (?P<password>.*) um', response.data.decode())
    assert match is not None
    extracted_password = match['password']

    # log out current user
    response = client_authenticated.get('/logout')

    # try to log in new user using the extracted password
    response = headless_login(client_authenticated, user='bilbo',
                              password=extracted_password)
    # - see if it works
    soup = BeautifulSoup(response.data)

    # make sure login succeeded
    # -> username should be displayed
    assert 'Benutzer <span>bilbo</span>' in soup.decode()
    # -> Tür öffnen button will appear
    assert any(['Tür öffnen' in link.contents[0] for link in soup.findAll('a', attrs={'class': ['btn'], 'role': 'button'})])