Files
zulip/zerver/management/commands/enqueue_digest_emails.py
Jessica McKellar 71f5b4e0ae Enable digest emails for zulip.com.
(imported from commit f676f96c2b516b33269b8f5c72deaf5c985e8ccd)
2013-12-17 10:47:17 -05:00

59 lines
2.1 KiB
Python

from __future__ import absolute_import
import datetime
import pytz
from django.core.management.base import BaseCommand
from zerver.lib.queue import queue_json_publish
from zerver.models import UserActivity, UserProfile, get_realm
VALID_DIGEST_DAYS = (1, 2, 3)
def inactive_since(user_profile, cutoff):
# Hasn't used the app in the last 24 business-day hours.
most_recent_visit = [row.last_visit for row in \
UserActivity.objects.filter(
user_profile=user_profile)]
if not most_recent_visit:
# This person has never used the app.
return True
last_visit = max(most_recent_visit)
return last_visit < cutoff
def last_business_day():
one_day = datetime.timedelta(hours=24)
previous_day = datetime.datetime.now(tz=pytz.utc) - one_day
while previous_day.weekday() not in VALID_DIGEST_DAYS:
previous_day -= one_day
return previous_day
# Changes to this should also be reflected in
# zerver/worker/queue_processors.py:DigestWorker.consume()
def queue_digest_recipient(user_profile, cutoff):
# Convert cutoff to epoch seconds for transit.
event = {"user_profile_id": user_profile.id,
"cutoff": cutoff.strftime('%s')}
queue_json_publish("digest_emails", event, lambda event: None)
class Command(BaseCommand):
help = """Enqueue digest emails for users that haven't checked the app
in a while.
"""
def handle(self, *args, **options):
# To be really conservative while we don't have user timezones or
# special-casing for companies with non-standard workweeks, only
# try to send mail on Tuesdays, Wednesdays, and Thursdays.
if datetime.datetime.utcnow().weekday() not in VALID_DIGEST_DAYS:
return
for domain in ["zulip.com"]:
user_profiles = UserProfile.objects.filter(
realm=get_realm(domain), is_active=True, is_bot=False,
enable_digest_emails=True)
for user_profile in user_profiles:
cutoff = last_business_day()
if inactive_since(user_profile, cutoff):
queue_digest_recipient(user_profile, cutoff)