git.maemo.org Git - hermes/blob - package/src/org/maemo/hermes/engine/facebook/service.py

   1 import org.maemo.hermes.engine.service
   2
   3 from org.maemo.hermes.engine.names import canonical
   4 from org.maemo.hermes.engine.friend import Friend
   5
   6 class Service(org.maemo.hermes.engine.service.Service):
   7     """Facebook backend for Hermes.
   8
   9        Copyright (c) Andrew Flegg <andrew@bleb.org> 2010.
  10        Copyright (c) Fredrik Wendt <fredrik@wendt.se> 2010.
  11        Released under the Artistic Licence."""
  12
  13     attrs = ['uid', 'name', 'pic_big', 'birthday_date', 'profile_url', 'first_name', 'last_name', 'website']
  14
  15
  16     # -----------------------------------------------------------------------
  17     def __init__(self, service_id, facebook, create_birthday_only = False):
  18         """Initialise the Facebook service, finding Facebook API keys in gconf and
  19            having a gui_callback available."""
  20
  21         self.fb = facebook
  22         self._service_id = service_id
  23
  24         self._friends_by_name = {}
  25         self._friends_by_url = {}
  26         self._friends_by_contact = {}
  27         self._contacts_by_friend = {}
  28         self._friends_without_contact = set()
  29         self._known_urls = set()
  30
  31
  32     # -----------------------------------------------------------------------
  33     def get_name(self):
  34         return "Facebook"
  35
  36
  37     # -----------------------------------------------------------------------
  38     def get_friends(self):
  39         return self._contacts_by_friend.keys()
  40
  41
  42     def get_contacts_with_match(self):
  43         return self._friends_by_contact
  44
  45     def get_unmatched_friends(self):
  46         return self._friends_by_name.values()
  47
  48
  49     # -----------------------------------------------------------------------
  50     def pre_process_contact(self, contact):
  51         """Registers URLs of all previous mappings, and makes sure that any Friends with those
  52            URLs don't get match by name."""
  53         for url in contact.get_urls():
  54             self._known_urls.add(url)
  55
  56
  57     # -----------------------------------------------------------------------
  58     def process_friends(self):
  59
  60         def if_defined(data, key, callback):
  61             if key in data and data[key]:
  62                 callback(data[key])
  63
  64         friends_data = self._get_friends_data()
  65         for data in friends_data:
  66             key = canonical(data['name']) # FIXME: deal with name collision
  67             friend = self._create_friend(data['name'])
  68
  69             if 'profile_url' not in data:
  70                 data['profile_url'] = "http://www.facebook.com/profile.php?id=" + str(data['uid'])
  71
  72             if_defined(data, 'website', friend.add_url)
  73             if_defined(data, 'profile_url', friend.add_url)
  74             if_defined(data, 'birthday_date', friend.set_birthday_date)
  75
  76             if_defined(data, 'pic_big', friend.set_photo_url)
  77
  78             if friend.has_birthday_date(): # FIXME: remove this, either you want to add your contacts or not?
  79                 self._friends_without_contact.add(friend)
  80             url = data['profile_url']
  81             self._friends_by_url[url] = friend
  82
  83             if url not in self._known_urls:
  84                 self._friends_by_name[key] = friend
  85
  86
  87     # -----------------------------------------------------------------------
  88     def process_contact(self, contact):
  89         matched_friend = None
  90         if self._friends_by_contact.has_key(contact):
  91             matched_friend = self._friends_by_contact[contact]
  92
  93         # we might get a hit if the friend has setup a URL with another service,
  94         # such as putting the id link to Facebook on the Twitter account's profile
  95         if not matched_friend:
  96             for url in contact.get_urls():
  97                 if url in self._friends_by_url:
  98                     matched_friend = self._friends_by_url[url]
  99                     self._register_match(contact, matched_friend)
 100                     break
 101
 102         if not matched_friend:
 103             for id in contact.get_identifiers():
 104                 if id in self._friends_by_name:
 105                     matched_friend = self._friends_by_name.pop(id)
 106                     self._register_match(contact, matched_friend)
 107                     break
 108
 109         return matched_friend
 110
 111
 112     # -----------------------------------------------------------------------
 113     def _register_match(self, contact, friend):
 114         friend.set_contact(contact)
 115         self._friends_without_contact.discard(friend)
 116         self._friends_by_contact[contact] = friend
 117         self._contacts_by_friend[friend] = contact
 118
 119
 120     # -----------------------------------------------------------------------
 121     def _get_friends_data(self):
 122         """Returns a list of dicts, where each dict represents a friend/contact"""
 123
 124         return self.fb.users.getInfo(self.fb.friends.get(), Service.attrs)