Implement Notification Framework with Initial Email Support

JIRA: None

Notification/notifier objects are now created with title,
content, sender, associated resource, and recipient and there is
now support for emails at the very least to be sent as notifications.

Change-Id: I456cf0e901d9a1e2a1e7d187dcc03d28fca003fb
Signed-off-by: Sawyer Bergeron <sbergeron@iol.unh.edu>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/notifier/dispatchers.py b/src/notifier/dispatchers.py
new file mode 100644
index 0000000..64be2a5
--- /dev/null
+++ b/src/notifier/dispatchers.py
@@ -0,0 +1,34 @@
+##############################################################################
+# Copyright (c) 2016 Max Breitenfeldt and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+
+from django.db.models.signals import pre_save
+from django.dispatch import receiver
+from django.contrib import messages
+from django.core.mail import send_mail
+
+class DispatchHandler():
+
+    @receiver(pre_save, sender='notifier.Notifier')
+    def dispatch(sender, instance, *args, **kwargs):
+        try:
+            msg_type = getattr(DispatchHandler, instance.message_type)
+            msg_type(instance)
+        except AttributeError:
+            instance.msg_sent = 'no dispatcher by given name exists: sending by email'
+            email(instance)
+
+    def email(instance):
+        if instance.msg_sent != 'no dispatcher by given name exists: sending by email':
+            instance.msg_sent = 'by email'
+        send_mail(instance.title,instance.content + 
+            '\n\n This message pertains to the following resource: ' + 
+            instance.resource.name,instance.sender,[instance.user.email_addr], fail_silently=False)
+
+    def webnotification(instance):
+        instance.msg_sent='by web notification'