notifications: implement opt-out

[patchwork] / apps / patchwork / utils.py

diff --git a/apps/patchwork/utils.py b/apps/patchwork/utils.py
index 53cf40ba7487b11e7e2d117606533db281d51d4f..5cb45e8eeaa41191955ead4a9fea3ca434dbb81d 100644 (file)
--- a/apps/patchwork/utils.py
+++ b/apps/patchwork/utils.py
@@ -18,9 +18,17 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
-from patchwork.forms import MultiplePatchForm
-from patchwork.models import Bundle, Project, BundlePatch, UserProfile
+import itertools
+import datetime
 from django.shortcuts import get_object_or_404
+from django.template.loader import render_to_string
+from django.contrib.sites.models import Site
+from django.conf import settings
+from django.core.mail import EmailMessage
+from django.db.models import Max
+from patchwork.forms import MultiplePatchForm
+from patchwork.models import Bundle, Project, BundlePatch, UserProfile, \
+        PatchChangeNotification, EmailOptout
 
 def get_patch_ids(d, prefix = 'patch_id'):
     ids = []
@@ -139,51 +147,59 @@ def set_bundle(user, project, action, data, patches, context):
 
     return []
 
+def send_notifications():
+    date_limit = datetime.datetime.now() - \
+                     datetime.timedelta(minutes =
+                                settings.NOTIFICATION_DELAY_MINUTES)
 
-def set_patches(user, project, action, data, patches, context):
-    errors = []
-    form = MultiplePatchForm(project = project, data = data)
+    # This gets funky: we want to filter out any notifications that should
+    # be grouped with other notifications that aren't ready to go out yet. To
+    # do that, we join back onto PatchChangeNotification (PCN -> Patch ->
+    # Person -> Patch -> max(PCN.last_modified)), filtering out any maxima
+    # that are with the date_limit.
+    qs = PatchChangeNotification.objects \
+            .annotate(m = Max('patch__submitter__patch__patchchangenotification'
+                        '__last_modified')) \
+                .filter(m__lt = date_limit)
 
-    try:
-        project = Project.objects.get(id = data['project'])
-    except:
-        errors = ['No such project']
-        return (errors, form)
+    groups = itertools.groupby(qs.order_by('patch__submitter'),
+                               lambda n: n.patch.submitter)
 
-    str = ''
+    errors = []
 
-    # this may be a bundle action, which doesn't modify a patch. in this
-    # case, don't require a valid form, or patch editing permissions
-    if action in bundle_actions:
-        errors = set_bundle(user, project, action, data, patches, context)
-        return (errors, form)
+    for (recipient, notifications) in groups:
+        notifications = list(notifications)
 
-    if not form.is_valid():
-        errors = ['The submitted form data was invalid']
-        return (errors, form)
+        def delete_notifications():
+            PatchChangeNotification.objects.filter(
+                                pk__in = notifications).delete()
 
-    for patch in patches:
-        if not patch.is_editable(user):
-            errors.append('You don\'t have permissions to edit the ' + \
-                    'patch "%s"' \
-                    % patch.name)
+        if EmailOptout.is_optout(recipient.email):
+            delete_notifications()
             continue
 
-        if action == 'update':
-            form.save(patch)
-            str = 'updated'
-
-
-    if len(patches) > 0:
-        if len(patches) == 1:
-            str = 'patch ' + str
-        else:
-            str = 'patches ' + str
-        context.add_message(str)
-
-    return (errors, form)
+        context = {
+            'site': Site.objects.get_current(),
+            'person': recipient,
+            'notifications': notifications,
+        }
+        subject = render_to_string(
+                        'patchwork/patch-change-notification-subject.text',
+                        context).strip()
+        content = render_to_string('patchwork/patch-change-notification.mail',
+                                context)
+
+        message = EmailMessage(subject = subject, body = content,
+                               from_email = settings.NOTIFICATION_FROM_EMAIL,
+                               to = [recipient.email],
+                               headers = {'Precedence': 'bulk'})
+
+        try:
+            message.send()
+        except ex:
+            errors.append((recipient, ex))
+            continue
 
-def userprofile_register_callback(user):
-    profile = UserProfile(user = user)
-    profile.save()
+        delete_notifications()
 
+    return errors