Send notification to active service users with user fields (optional)

app/service/sender.py

@@ -0,0 +1,33 @@
+from flask import current_app
+
+from app.dao.services_dao import dao_fetch_service_by_id, dao_fetch_active_users_for_service
+from app.dao.templates_dao import dao_get_template_by_id
+from app.models import EMAIL_TYPE, KEY_TYPE_NORMAL
+from app.notifications.process_notifications import persist_notification, send_notification_to_queue
+
+
+def send_notification_to_service_users(service_id, template_id, personalisation={}, include_user_fields=[]):
+    template = dao_get_template_by_id(template_id)
+    service = dao_fetch_service_by_id(service_id)
+    active_users = dao_fetch_active_users_for_service(service.id)
+    notify_service = dao_fetch_service_by_id(current_app.config['NOTIFY_SERVICE_ID'])
+
+    for user in active_users:
+        personalisation = _add_user_fields(user, personalisation, include_user_fields)
+        notification = persist_notification(
+            template_id=template.id,
+            template_version=template.version,
+            recipient=user.email_address if template.template_type == EMAIL_TYPE else user.mobile_number,
+            service=notify_service,
+            personalisation=personalisation,
+            notification_type=template.template_type,
+            api_key_id=None,
+            key_type=KEY_TYPE_NORMAL
+        )
+        send_notification_to_queue(notification, False, queue='notify')
+
+
+def _add_user_fields(user, personalisation, fields):
+    for field in fields:
+        personalisation[field] = getattr(user, field)
+    return personalisation