prefabs groundwork

1 files changed, 31 insertions, 0 deletions

diff --git a/web-server/opendc/models/prefab.py b/web-server/opendc/models/prefab.py
new file mode 100644
index 00000000..a3611a11
--- /dev/null
+++ b/web-server/opendc/models/prefab.py
@@ -0,0 +1,31 @@
+from opendc.models.model import Model
+from opendc.models.user import User
+from opendc.util.database import DB
+from opendc.util.exceptions import ClientError
+from opendc.util.rest import Response
+
+
+class Prefab(Model):
+    """Model representing a Simulation."""
+
+    collection_name = 'prefabs'
+
+    def check_user_access(self, google_id, edit_access):
+        """Raises an error if the user with given [google_id] has insufficient access.
+
+        :param google_id: The Google ID of the user.
+        :param edit_access: True when edit access should be checked, otherwise view access.
+        """
+        user = User.from_google_id(google_id)
+        authorizations = list(filter(lambda x: str(x['prefabId']) == str(self.get_id()),
+                                     user.obj['authorizations']))
+        if len(authorizations) == 0 or (edit_access and authorizations[0]['authorizationLevel'] == 'VIEW'):
+            raise ClientError(Response(403, "Forbidden from retrieving prefab."))
+
+    def get_all_authorizations(self):
+        """Get all user IDs having access to this simulation."""
+        return [
+            str(user['_id']) for user in DB.fetch_all({'authorizations': {
+                'prefabId': self.obj['_id']
+            }}, User.collection_name)
+        ]