# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1507331481 -7200
# Node ID e981fec918769ccbb00d271ad0c02dee2af2f22d
# Parent  2ab74bb5e2d99dda7e96bf2dc2b9a1b8b40d240b
Extended the new_object function to initialise essential properties.
Updated the invite tool to use the enhanced new_object function.

diff -r 2ab74bb5e2d9 -r e981fec91876 imiptools/data.py
--- a/imiptools/data.py	Sat Oct 07 00:39:09 2017 +0200
+++ b/imiptools/data.py	Sat Oct 07 01:11:21 2017 +0200
@@ -166,6 +166,9 @@
     def get_value(self, name):
         return get_value(self.details, name)
 
+    def set_value(self, name, value, attr=None):
+        self.details[name] = [(value, attr or {})]
+
     def get_utc_datetime(self, name, date_tzid=None):
         return get_utc_datetime(self.details, name, date_tzid)
 
@@ -764,11 +767,22 @@
     finally:
         out.close()
 
-def new_object(object_type):
+def new_object(object_type, organiser=None, organiser_attr=None):
+
+    """
+    Make a new object of the given 'object_type' and optional 'organiser',
+    with optional 'organiser_attr' describing any organiser identity in more
+    detail.
+    """
 
-    "Make a new object of the given 'object_type'."
+    details = {}
 
-    return Object({object_type : ({}, {})})
+    if organiser:
+        details["UID"] = [(make_uid(organiser), {})]
+        details["ORGANIZER"] = [(organiser, organiser_attr or {})]
+        details["DTSTAMP"] = [(get_timestamp(), {})]
+
+    return Object({object_type : (details, {})})
 
 def make_uid(user):
 
diff -r 2ab74bb5e2d9 -r e981fec91876 tools/invite.py
--- a/tools/invite.py	Sat Oct 07 00:39:09 2017 +0200
+++ b/tools/invite.py	Sat Oct 07 01:11:21 2017 +0200
@@ -3,7 +3,7 @@
 """
 Prepare an invitation message.
 
-Copyright (C) 2016 Paul Boddie <paul@boddie.org.uk>
+Copyright (C) 2016, 2017 Paul Boddie <paul@boddie.org.uk>
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -22,7 +22,7 @@
 from datetime import datetime
 from imiptools.data import get_address, make_uid, new_object
 from imiptools.dates import get_datetime, get_datetime_item, \
-                            get_default_timezone \
+                            get_default_timezone
 from imiptools.period import Period
 from imiptools.mail import Messenger
 from os.path import split
@@ -48,9 +48,7 @@
 
     # Create an event for the calendar with the organiser and attendee details.
 
-    e = new_object("VEVENT")
-    e["UID"] = [(make_uid(organiser), {})]
-    e["ORGANIZER"] = [(organiser, {})]
+    e = new_object("VEVENT", organiser)
 
     attendees = []