Re-implement Facebook service to use OAuth2 and Graph API. This allows

[hermes] / package / src / org / maemo / hermes / engine / facebook / api.py

diff --git a/package/src/org/maemo/hermes/engine/facebook/api.py b/package/src/org/maemo/hermes/engine/facebook/api.py
new file mode 100644 (file)
index 0000000..19d57ed
--- /dev/null
+++ b/package/src/org/maemo/hermes/engine/facebook/api.py
@@ -0,0 +1,64 @@
+import urllib, urllib2
+import simplejson
+
+class FacebookApi():
+    """Facebook backend for Hermes, using the Graph API:
+    
+          http://developers.facebook.com/docs/reference/api/
+       
+       Copyright (c) Andrew Flegg <andrew@bleb.org> 2010.
+       Released under the Artistic Licence."""
+       
+       
+    # -----------------------------------------------------------------------
+    def __init__(self, oauth):
+        self._oauth = oauth
+
+
+    # -----------------------------------------------------------------------
+    def authenticate(self):
+        '''Authenticate the user with Facebook.'''
+        
+        self._oauth.authorise('https://graph.facebook.com/oauth/authorize',
+                              'https://graph.facebook.com/oauth/access_token',
+                              {'scope': 'user_about_me,friends_about_me,user_birthday,friends_birthday,user_website,friends_website,user_work_history,friends_work_history'})
+
+
+    # -----------------------------------------------------------------------
+    def get_user(self):
+        '''Return the name of the authenticated user.'''
+        
+        data = self._request('https://graph.facebook.com/me')
+        return data['name']
+
+
+    # -----------------------------------------------------------------------
+    def get_friends(self):
+        '''Return the full list of people being followed by the user.
+        
+           The result is a list of users:
+           http://developers.facebook.com/docs/reference/api/user/'''
+
+        def copy(data, from_key, to, to_key = None):
+            if not to_key:
+                to_key = from_key
+                
+            if from_key in data:
+                to[to_key] = data[from_key]
+
+        users = self._request('https://graph.facebook.com/me/friends', {'fields': 'id,name,link,birthday,website,picture', 'type': 'large'})
+        return users['data']
+    
+    
+    # -----------------------------------------------------------------------
+    def _request(self, url, args = None):
+        """Make an authenticated request to Facebook and check the
+           JSON response. Return the dictionary if no errors."""
+        
+        json = self._oauth.request(url, args)
+#        print json
+        data = simplejson.loads(json)
+        if 'error' in data:
+            raise Exception(data['error'])
+        
+        return data