def __getitem__(self, item):
"""
@param item: Friend uid (or mask if reversed)
@return: Friend mask (or uid if reversed)
"""
try:
value = self.__masks[item]
except KeyError:
self.__masks = getMasks(self.safe, self.profileId)
value = self.__masks.get(item, None)
if value is None:
raise MissingFriend("Friend does not exist locally: {}".format(item))
return value
def __init__(self, safe, profileId, reverse=False):
"""
Mask container constructor
@param safe: crypto box
@param profileId: logged in profile ID
@param reverse: key and value are swapped, mask becomes the lookup key
"""
self.safe = safe
self.profileId = profileId
# friend uid->mask container
self.__masks = getMasks(self.safe, self.profileId) or {}
if reverse:
self.__masks = {v: k for k, v in self.__masks.items()}
