Attach calendar invite to cc add email

emails/generators.py

@@ -245,7 +245,10 @@ def __init__(self,
         self.email = EmailMultiAlternatives(subject, content_txt, from_email, to_emails, bcc=bcc, cc=cc,
                                             reply_to=reply_to)
         for a in attachments:
-            self.email.attach(a['name'], a['file_handle'], "application/pdf")
+            if a['file_handle']:
+                self.email.attach(a['name'], a['file_handle'], "application/pdf")
+            else:
+                self.email.attach(a)
 
         if build_html:
             template_html = "%s.html" % template_basename

emails/tests.py

@@ -107,7 +107,7 @@ def test_poke_cc_message_generator(self):
 
         # Test with 1 service passed in
         expected = "Some example message<hr><strong>CC's needed:</strong> Lighting\n<strong>Services:</strong> " \
-                   "Basic Lighting\n<strong>What:</strong> <a href='https://lnl.wpi.edu/db/events/view/1/'>" \
+                   "Basic Lighting\n<strong>What:</strong> <a href='http://lnl.wpi.edu/db/events/view/1/'>" \
                    "All set</a>\n<strong>When:</strong> %s\n<strong>Setup by:</strong> %s\n<strong>Where:</strong> " \
                    "Test Location\n<strong>Description:</strong> An event that is pretty much all set\n\n" % \
                    (event1_start + event1_end, event1_setup)
@@ -118,11 +118,11 @@ def test_poke_cc_message_generator(self):
 
         # Test with 2 services passed in
         expected = "Some example message<hr><strong>CC's needed:</strong> Lighting\n<strong>Services:</strong> " \
-                   "Basic Lighting\n<strong>What:</strong> <a href='https://lnl.wpi.edu/db/events/view/1/'>" \
+                   "Basic Lighting\n<strong>What:</strong> <a href='http://lnl.wpi.edu/db/events/view/1/'>" \
                    "All set</a>\n<strong>When:</strong> %s\n<strong>Setup by:</strong> %s\n<strong>Where:</strong> " \
                    "Test Location\n<strong>Description:</strong> An event that is pretty much all set\n\n" \
                    "<strong>CC's needed:</strong> Sound\n<strong>Services:</strong> Basic Sound\n" \
-                   "<strong>What:</strong> <a href='https://lnl.wpi.edu/db/events/view/2/'>Need Chiefs</a>\n" \
+                   "<strong>What:</strong> <a href='http://lnl.wpi.edu/db/events/view/2/'>Need Chiefs</a>\n" \
                    "<strong>When:</strong> %s\n<strong>Setup by:</strong> %s\n<strong>Where:</strong> Test Location\n" \
                    "<strong>Description:</strong> A test event that we need CCs for\n\n" % \
                    (event1_start + event1_end, event1_setup, event2_start + event2_end, event2_setup)

events/signals.py

@@ -1,7 +1,10 @@
 import datetime
+import icalendar
 
 from django.conf import settings
 from django.db.models.signals import post_save, pre_delete, pre_save
+from email.mime.base import MIMEBase
+from email.encoders import encode_base64
 from django.dispatch import receiver
 from django.utils import timezone
 from django.utils.text import slugify
@@ -27,6 +30,34 @@ def email_cc_notification(sender, instance, created, raw=False, **kwargs):
         filename = "%s.workorder.pdf" % slugify(event.event_name)
         attachments = [{"file_handle": pdf_handle, "name": filename}]
 
+        # generate an Outlook invite
+        chief = i.crew_chief
+        cal = icalendar.Calendar()
+        cal['method'] = 'PUBLISH'
+        cal['prodid'] = '-//WPI Lens and Lights//LNLDB//EN'
+        cal['version'] = '2.0'
+        vevent = icalendar.Event()
+        vevent['summary'] = event.event_name
+        vevent['description'] = event.cal_desc()
+        vevent['uid'] = event.cal_guid()
+        vevent['dtstart'] = event.datetime_start.strftime('%Y%m%dT%H%M%SZ')
+        vevent['dtend'] = event.datetime_end.strftime('%Y%m%dT%H%M%SZ')
+        vevent['dtstamp'] = timezone.now().strftime('%Y%m%dT%H%M%SZ')
+        vevent['location'] = event.location.name
+        vevent['url'] = event.cal_link()
+        vevent.add('attendee', 'MAILTO:%s' % chief.email, parameters={'RSVP': 'FALSE', 'CN': chief.name})
+        cal.add_component(vevent)
+
+        invite_filename = '%s.invite.ics' % slugify(event.event_name)
+        invite = MIMEBase('text', "calendar", method="PUBLISH", name=invite_filename)
+        invite.set_payload(cal.to_ical())
+        encode_base64(invite)
+        invite.add_header('Content-Description', invite_filename)
+        invite.add_header('Content-class', "urn:content-classes:calendarmessage")
+        invite.add_header('Filename', invite_filename)
+        invite.add_header('Path', invite_filename)
+        attachments.append(invite)
+
         if i.setup_start:
             local = timezone.localtime(i.setup_start)
             local_formatted = local.strftime("%A %B %d at %I:%M %p")