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, 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
  23         self._friends_by_name = {}
  24         self._friends_by_url = {}
  25         self._friends_by_contact = {}
  26         self._contacts_by_friend = {}
  27         self._friends_without_contact = set()
  28         self._known_urls = set()
  29
  30
  31     # -----------------------------------------------------------------------
  32     def get_name(self):
  33         return "Facebook"
  34
  35
  36     # -----------------------------------------------------------------------
  37     def get_friends(self):
  38         return self._contacts_by_friend.keys()
  39
  40
  41     def get_contacts_with_match(self):
  42         return self._friends_by_contact
  43
  44     def get_unmatched_friends(self):
  45         return self._friends_by_name.values()
  46
  47
  48     # -----------------------------------------------------------------------
  49     def pre_process_contact(self, contact):
  50         """Registers URLs of all previous mappings, and makes sure that any Friends with those
  51            URLs don't get match by name."""
  52         for url in contact.get_urls():
  53             self._known_urls.add(url)
  54
  55
  56     # -----------------------------------------------------------------------
  57     def process_friends(self):
  58
  59         def if_defined(data, key, callback):
  60             if key in data and data[key]:
  61                 callback(data[key])
  62
  63         friends_data = self._get_friends_data()
  64         for data in friends_data:
  65             key = canonical(data['name']) # FIXME: deal with name collision
  66             friend = self._create_friend(data['name'])
  67
  68             if 'profile_url' not in data:
  69                 data['profile_url'] = "http://www.facebook.com/profile.php?id=" + str(data['uid'])
  70
  71             if_defined(data, 'website', friend.add_url)
  72             if_defined(data, 'profile_url', friend.add_url)
  73             if_defined(data, 'birthday_date', friend.set_birthday_date)
  74
  75             if_defined(data, 'pic_big', friend.set_photo_url)
  76
  77             if friend.has_birthday_date(): # FIXME: remove this, either you want to add your contacts or not?
  78                 self._friends_without_contact.add(friend)
  79             url = data['profile_url']
  80             self._friends_by_url[url] = friend
  81
  82             if url not in self._known_urls:
  83                 self._friends_by_name[key] = friend
  84
  85
  86     # -----------------------------------------------------------------------
  87     def process_contact(self, contact):
  88         matched_friend = None
  89         if self._friends_by_contact.has_key(contact):
  90             matched_friend = self._friends_by_contact[contact]
  91
  92         # we might get a hit if the friend has setup a URL with another service,
  93         # such as putting the id link to Facebook on the Twitter account's profile
  94         if not matched_friend:
  95             for url in contact.get_urls():
  96                 if url in self._friends_by_url:
  97                     matched_friend = self._friends_by_url[url]
  98                     self._register_match(contact, matched_friend)
  99                     break
 100
 101         if not matched_friend:
 102             for id in contact.get_identifiers():
 103                 if id in self._friends_by_name:
 104                     matched_friend = self._friends_by_name.pop(id)
 105                     self._register_match(contact, matched_friend)
 106                     break
 107
 108         return matched_friend
 109
 110
 111     # -----------------------------------------------------------------------
 112     def _register_match(self, contact, friend):
 113         friend.set_contact(contact)
 114         self._friends_without_contact.discard(friend)
 115         self._friends_by_contact[contact] = friend
 116         self._contacts_by_friend[friend] = contact
 117
 118
 119     # -----------------------------------------------------------------------
 120     def _get_friends_data(self):
 121         """Returns a list of dicts, where each dict represents a friend/contact"""
 122
 123         return self.fb.users.getInfo(self.fb.friends.get(), Service.attrs)