1 #!/usr/bin/env python 2 3 """ 4 Common calendar client utilities. 5 6 Copyright (C) 2014, 2015 Paul Boddie <paul@boddie.org.uk> 7 8 This program is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free Software 10 Foundation; either version 3 of the License, or (at your option) any later 11 version. 12 13 This program is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 15 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 16 details. 17 18 You should have received a copy of the GNU General Public License along with 19 this program. If not, see <http://www.gnu.org/licenses/>. 20 """ 21 22 from imiptools.data import get_window_end, uri_items 23 from imiptools.dates import get_default_timezone 24 from imiptools.profile import Preferences 25 26 def update_attendees(obj, added, removed): 27 28 """ 29 Update the attendees in 'obj' with the given 'added' and 'removed' 30 attendee lists. A list is returned containing the attendees whose 31 attendance should be cancelled. 32 """ 33 34 to_cancel = [] 35 36 if added or removed: 37 attendees = uri_items(obj.get_items("ATTENDEE") or []) 38 39 if removed: 40 remaining = [] 41 42 for attendee, attendee_attr in attendees: 43 if attendee in removed: 44 if attendee_attr.get("PARTSTAT") in ("ACCEPTED", "TENTATIVE"): 45 to_cancel.append((attendee, attendee_attr)) 46 else: 47 remaining.append((attendee, attendee_attr)) 48 49 attendees = remaining 50 51 if added: 52 for attendee in added: 53 attendees.append((attendee, {"PARTSTAT" : "NEEDS-ACTION", "RSVP" : "TRUE"})) 54 55 obj["ATTENDEE"] = attendees 56 57 return to_cancel 58 59 class Client: 60 61 "Common handler and manager methods." 62 63 def __init__(self, user): 64 self.user = user 65 self.preferences = None 66 67 def get_preferences(self): 68 if not self.preferences: 69 self.preferences = Preferences(self.user) 70 return self.preferences 71 72 def get_tzid(self): 73 prefs = self.get_preferences() 74 return prefs.get("TZID") or get_default_timezone() 75 76 def get_window_size(self): 77 prefs = self.get_preferences() 78 try: 79 return int(prefs.get("window_size")) 80 except (TypeError, ValueError): 81 return 100 82 83 def get_window_end(self): 84 return get_window_end(self.get_tzid(), self.get_window_size()) 85 86 def is_sharing(self): 87 return self.get_preferences().get("freebusy_sharing") == "share" 88 89 def is_bundling(self): 90 return self.get_preferences().get("freebusy_bundling") == "always" 91 92 # vim: tabstop=4 expandtab shiftwidth=4