emails.py

import logging
import random

from apps.constants import HHS_SERVER_LOGNAME_FMT

from django.conf import settings
from django.urls import reverse
from libs.decorators import waffle_function_switch
from libs.mail import Mailer


logger = logging.getLogger(HHS_SERVER_LOGNAME_FMT.format(__name__))


def random_secret(y=40):
    return ''.join(random.choice('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789') for x in range(y))


@waffle_function_switch('outreach_email')
def send_activation_key_via_email(user, signup_key):
    """Send an email with activation key and welcome message."""
    activation_link = '%s%s' % (get_hostname(), reverse('activation_verify', args=(signup_key,)))
    mailer = Mailer(
        subject='Verify Your Blue Button 2.0 Developer Sandbox Account',
        template_text='email/email-activate.txt',
        template_html='email/email-activate.html',
        to=[
            user.email,
        ],
        context={'ACTIVATION_LINK': activation_link, 'ACTIVATION_KEY': signup_key, 'EXPIRATION': settings.SIGNUP_TIMEOUT_DAYS},
    )
    mailer.send()
    logger.info('Activation link sent to {} ({})'.format(user.username, user.email))


def get_hostname():
    hostname = getattr(settings, 'HOSTNAME_URL', 'http://localhost:8000')

    if 'http://' in hostname.lower():
        pass
    elif 'https://' in hostname.lower():
        pass
    else:
        logger.debug('HOSTNAME_URL [%s] does not contain http or https prefix. Issuer:%s' % (settings.HOSTNAME_URL, hostname))
        # no http/https prefix in HOST_NAME_URL so we add it
        hostname = 'https://%s' % (hostname)
    return hostname