from pyramid.view import view_config
from pyramid.security import remember
from pyramid.security import authenticated_userid
from pyramid_persona.views import verify_login

USE_WHITELIST = False
WHITELIST_REJECT_MESSAGE = 'Sorry, you are not authorized to access this site.'
WHITELIST_REJECT_REDIRECT = '/'
USE_BLACKLIST = False
BLACKLIST_REJECT_MESSAGE = 'Sorry, you are not authorized to access this site.'
BLACKLIST_REJECT_REDIRECT = '/'
NEW_USER_REDIRECT = None
REDIRECT = '/'


def user_exists(email):
    """TODO: Implement me"""
    return False


def create_profile(email):
    """TODO: Implement me"""
    pass
  
def email_whitelist():
    return []


def email_blacklist():
    return []


@view_config(route_name='new_user', renderer='templates/new_user.jinja2')
def new_user_view(request):
    email = authenticated_userid(request)
    return {
        'email': email
    }
    

@view_config(route_name='login', check_csrf=True, renderer='json')
def login(request):
    email = verify_login(request)
    if USE_WHITELIST and email not in email_whitelist():
        request.session.flash(WHITELIST_REJECT_MESSAGE)
        return {
            'redirect': '/',
            'success': False
        }
    if USE_BLACKLIST and email in email_blacklist():
        request.session.flash(BLACKLIST_REJECT_MESSAGE)
        return {
            'redirect': '/',
            'success': False
        }
    request.response.headers.extend(remember(request, email))
        if not user_exists(email):
        create_profile(email)
        if NEW_USER_REDIRECT is not None:
            return {
                'redirect': '/new-user',
                'success': True
            }
    return {
        'redirect': REDIRECT,
        'success': True
    }