Tag request to go live tickets automatically

At the moment we manually tag tickets as they come in so we can analyse
how many of each type we’re getting.

Further, we manually tag all the request to go live tickets once a month
to analyse how many are complete/incomplete.

All this tagging is useful, but quite time consuming. Notify already
knows this information and – using the Zendesk API – we can tag them
automatically.

I’ve checked with Holly and this is the taxonomy we want to use.

app/main/views/service_settings.py

@@ -222,7 +222,7 @@ def submit_request_to_go_live(service_id):
                 service_dashboard=url_for('main.service_dashboard', service_id=current_service.id, _external=True),
                 organisation_type=str(current_service.organisation_type).title(),
                 agreement=AgreementInfo.from_current_user().as_human_readable,
-                checklist='Yes' if current_service.go_live_checklist_completed else 'No',
+                checklist=current_service.go_live_checklist_completed_as_yes_no,
                 volume_email=form.volume_email.data,
                 volume_sms=form.volume_sms.data,
                 volume_letter=form.volume_letter.data,
@@ -235,7 +235,8 @@ def submit_request_to_go_live(service_id):
             ),
             ticket_type=zendesk_client.TYPE_QUESTION,
             user_email=current_user.email_address,
-            user_name=current_user.name
+            user_name=current_user.name,
+            tags=get_request_to_go_live_tags(current_service, current_user),
         )
 
         flash('Thanks for your request to go live. We’ll get back to you within one working day.', 'default')
@@ -1106,3 +1107,46 @@ def check_contact_details_type(contact_details):
         return 'email_address'
     else:
         return 'phone_number'
+
+
+def get_request_to_go_live_tags(service, user):
+    return list(_get_request_to_go_live_tags(
+        service,
+        AgreementInfo.from_user(user).agreement_signed,
+    ))
+
+
+def _get_request_to_go_live_tags(service, agreement_signed):
+
+    BASE = 'notify_request_to_go_live'
+    COMPLETE = BASE + '_complete'
+    INCOMPLETE = BASE + '_incomplete'
+
+    yield BASE
+
+    if service.go_live_checklist_completed and agreement_signed:
+        return COMPLETE
+
+    yield INCOMPLETE
+
+    if not service.go_live_checklist_completed:
+        yield INCOMPLETE + '_checklist'
+
+    if not agreement_signed:
+        yield INCOMPLETE + '_mou'
+
+    if service.has_email_templates and not service.has_email_reply_to_address:
+        yield INCOMPLETE + '_email_reply_to'
+
+    if not service.has_team_members:
+        yield INCOMPLETE + '_team_member'
+
+    if not service.has_templates:
+        yield INCOMPLETE + '_template_content'
+
+    if (
+        service.has_sms_templates and
+        service.shouldnt_use_govuk_as_sms_sender and
+        service.sms_sender_is_govuk
+    ):
+        yield INCOMPLETE + '_sms_sender'