local mod_groups = module:depends("groups_internal");

module:hook("user-registered", function(event)

	local validated_invite = event.validated_invite or (event.session and event.session.validated_invite);

	if not validated_invite then

		-- not registered via invite, nothing to do

		return

	end

	local groups = validated_invite and validated_invite.additional_data and validated_invite.additional_data.groups;

	if not groups then

		-- invite has no groups, nothing to do

		return

	end

	local new_username = event.username;

	module:log("debug", "adding %s to groups from invite", new_username);

	for _, group in ipairs(groups) do

		mod_groups.add_member(group, new_username);

	end

end);