Send notification with missed message to users if they received a PM while offline

This is configurable in the user's settings on Humbug

(imported from commit 80bf6d7a6f0dc3811117548e2225865db8b533d9)

templates/zephyr/settings.html

@@ -132,6 +132,17 @@
             </div>
         </div>
 
+        <div class="control-group">
+            <label for="enable_offline_email_notifications" class="control-label">
+                Notify on receiving PMs when offline</label>
+            <div class="controls">
+                <input type="checkbox" name="enable_offline_email_notifications" id="enable_offline_email_notifications"
+                   {% if user_profile.enable_offline_email_notifications %}
+                   checked="yes"
+                   {% endif %} />
+            </div>
+        </div>
+
         <div class="control-group">
             <div class="controls">
                 <input type="submit" name="change_settings" value="Save changes" class="btn btn-big btn-primary" />

zephyr/lib/actions.py

@@ -559,6 +559,14 @@ def do_change_enable_sounds(user_profile, enable_sounds, log=True):
                    'user': user_profile.email,
                    'enable_sounds': enable_sounds})
 
+def do_change_enable_offline_email_notifications(user_profile, offline_email_notifications, log=True):
+    user_profile.enable_offline_email_notifications = offline_email_notifications
+    user_profile.save(update_fields=["enable_offline_email_notifications"])
+    if log:
+        log_event({'type': 'enable_offline_email_notifications_changed',
+                   'user': user_profile.email,
+                   'enable_offline_email_notifications': offline_email_notifications})
+
 def do_change_enter_sends(user_profile, enter_sends):
     user_profile.enter_sends = enter_sends
     user_profile.save(update_fields=["enter_sends"])
@@ -887,6 +895,7 @@ def do_send_confirmation_email(invitee, referrer):
         subject_template_path='confirmation/invite_email_subject.txt',
         body_template_path='confirmation/invite_email_body.txt')
 
+@statsd_increment("missed_message_reminders")
 def do_send_missedmessage_email(user_profile, missed_messages):
     """
     Send a reminder email to a user if she's missed some PMs by being offline
@@ -920,19 +929,12 @@ def do_send_missedmessage_email(user_profile, missed_messages):
     user_profile.last_reminder = datetime.datetime.now()
     user_profile.save(update_fields=['last_reminder'])
 
-    statsd.incr('missed_message_reminders')
-
 def handle_missedmessage_emails(user_profile_id, missed_email_events):
     message_ids = [event.get('message_id') for event in missed_email_events]
     timestamp = timestamp_to_datetime(event.get('timestamp'))
 
-    try:
     user_profile = UserProfile.objects.get(id=user_profile_id)
     messages = Message.objects.filter(id__in=message_ids, usermessage__flags=~UserMessage.flags.read)
-    except (UserProfile.DoesNotExist, Message.DoesNotExist) as e:
-        import logging
-        logging.warning("Failed to send missed message email, failed to look up: %s %s %e" % \
-            (user_profile_id, message_ids, e))
 
     if len(messages) == 0 or timestamp - user_profile.last_reminder < datetime.timedelta(days=1):
         # Don't spam the user, if we've sent an email in the last day

zephyr/management/commands/populate_db.py

@@ -553,6 +553,9 @@ def restore_saved_messages():
         elif message_type == "enable_sounds_changed":
             user_profile = users[old_message["user"]]
             user_profile.enable_sounds = (old_message["enable_sounds"] != "false")
+        elif message_type == "enable_offline_email_notifications_changed":
+            user_profile = users[old_message["user"]]
+            user_profile.enable_offline_email_notifications = (old_message["enable_offline_email_notifications"] != "false")
             user_profile.save()
             continue
         elif message_type == "default_streams":

zephyr/static/js/ui.js

@@ -776,6 +776,10 @@ $(function () {
                 page_params.sounds_enabled = result.enable_sounds;
             }
 
+            if (result.enable_offline_email_notifications !== undefined) {
+                page_params.enable_offline_email_notifications = result.enable_offline_email_notifications;
+            }
+
             settings_status.removeClass(status_classes)
                 .addClass('alert-success')
                 .text(message).stop(true).fadeTo(0,1);

zephyr/tornado_callbacks.py

@@ -2,7 +2,7 @@ from __future__ import absolute_import
 
 from django.conf import settings
 from zephyr.models import Message, UserProfile, UserMessage, \
-    Recipient, Stream, get_stream
+    Recipient, Stream, get_stream, get_user_profile_by_id
 
 from zephyr.decorator import JsonableError
 from zephyr.lib.cache_helpers import cache_get_message
@@ -11,6 +11,7 @@ from zephyr.lib.event_queue import get_client_descriptors_for_user
 
 import os
 import sys
+import time
 import logging
 import requests
 import simplejson
@@ -267,6 +268,23 @@ def process_new_message(data):
                 event = dict(type='message', message=message_dict)
                 client.add_event(event)
 
+        # If the recipient was offline and the message was a single or group PM,
+        # potentially notify more immediately
+        if message.recipient.type in (Recipient.PERSONAL, Recipient.HUDDLE) and \
+            user_profile_id != message.sender.id and \
+            len(get_client_descriptors_for_user(user_profile_id)) == 0:
+
+            user_profile = get_user_profile_by_id(user_profile_id)
+
+            if user_profile.enable_offline_email_notifications:
+                event = {"user_profile_id": user_profile_id,
+                         "message_id": message.id,
+                         "timestamp": time.time()}
+
+                # We require RabbitMQ to do this, as we can't call the email handler
+                # from the Tornado process. So if there's no rabbitmq support do nothing
+                queue_json_publish("missedmessage_emails", event, lambda event: None)
+
     if 'stream_name' in data:
         stream_receive_message(data['realm_id'], data['stream_name'], message)
 

zephyr/views.py

@@ -29,7 +29,7 @@ from zephyr.lib.actions import do_add_subscription, do_remove_subscription, \
     create_stream_if_needed, gather_subscriptions, subscribed_to_stream, \
     update_user_presence, set_stream_color, get_stream_colors, update_message_flags, \
     recipient_for_emails, extract_recipients, do_events_register, do_finish_tutorial, \
-    get_status_dict
+    get_status_dict, do_change_enable_offline_email_notifications
 from zephyr.forms import RegistrationForm, HomepageForm, ToSForm, is_unique, \
     is_inactive, isnt_mit
 from django.views.decorators.csrf import csrf_exempt
@@ -521,6 +521,8 @@ def home(request):
             user_profile.enable_desktop_notifications,
         sounds_enabled =
             user_profile.enable_sounds,
+        enable_offline_email_notifications =
+            user_profile.enable_offline_email_notifications,
         event_queue_id        = register_ret['queue_id'],
         last_event_id         = register_ret['last_event_id'],
         max_message_id        = register_ret['max_message_id']
@@ -1283,7 +1285,8 @@ def json_change_settings(request, user_profile, full_name=POST,
                          # because browsers POST nothing for an unchecked checkbox
                          enable_desktop_notifications=POST(converter=lambda x: x == "on",
                                                            default=False),
-                         enable_sounds=POST(converter=lambda x: x == "on",
+                         enable_sounds=POST(converter=lambda x: x == "on"),
+                         enable_offline_email_notifications=POST(converter=lambda x: x == "on",
                                                                  default=False)):
     if new_password != "" or confirm_password != "":
         if new_password != confirm_password:
@@ -1305,6 +1308,10 @@ def json_change_settings(request, user_profile, full_name=POST,
         do_change_enable_sounds(user_profile, enable_sounds)
         result['enable_sounds'] = enable_sounds
 
+    if user_profile.enable_offline_email_notifications != enable_offline_email_notifications:
+        do_change_enable_offline_email_notifications(user_profile, enable_offline_email_notifications)
+        result['enable_offline_email_notifications'] = enable_offline_email_notifications
+
     return json_success(result)
 
 @authenticated_json_post_view