%-*-Mode:erlang;coding:utf-8;tab-width:4;c-basic-offset:4;indent-tabs-mode:()-*-
% ex: set ft=erlang fenc=utf-8 sts=4 ts=4 sw=4 et nomod:
%%%
%%%------------------------------------------------------------------------
%%% Fuctions Common to Service Usage
%%%
%%% MIT License
%%%
%%% Copyright (c) 2016-2017 Michael Truog <mjtruog at gmail dot com>
%%%
%%% Permission is hereby granted, free of charge, to any person obtaining a
%%% copy of this software and associated documentation files (the "Software"),
%%% to deal in the Software without restriction, including without limitation
%%% the rights to use, copy, modify, merge, publish, distribute, sublicense,
%%% and/or sell copies of the Software, and to permit persons to whom the
%%% Software is furnished to do so, subject to the following conditions:
%%%
%%% The above copyright notice and this permission notice shall be included in
%%% all copies or substantial portions of the Software.
%%%
%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
%%% FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
%%% DEALINGS IN THE SOFTWARE.
%%%
%%%------------------------------------------------------------------------

-define(CATCH_EXIT(F),
        try F catch exit:{Reason, _} -> {error, Reason} end).

destination_refresh_groups(DestRefresh, OldGroups)
    when (DestRefresh =:= lazy_closest orelse
          DestRefresh =:= lazy_furthest orelse
          DestRefresh =:= lazy_random orelse
          DestRefresh =:= lazy_local orelse
          DestRefresh =:= lazy_remote orelse
          DestRefresh =:= lazy_newest orelse
          DestRefresh =:= lazy_oldest) ->
    case OldGroups of
        {_, _} ->
            OldGroups;
        undefined ->
            cpg_data:get_empty_groups()
    end;

destination_refresh_groups(DestRefresh, _)
    when (DestRefresh =:= immediate_closest orelse
          DestRefresh =:= immediate_furthest orelse
          DestRefresh =:= immediate_random orelse
          DestRefresh =:= immediate_local orelse
          DestRefresh =:= immediate_remote orelse
          DestRefresh =:= immediate_newest orelse
          DestRefresh =:= immediate_oldest) ->
    undefined;

destination_refresh_groups(none, _) ->
    undefined.

destination_refresh(DestRefresh, Pid, Delay, Scope)
    when (DestRefresh =:= lazy_closest orelse
          DestRefresh =:= lazy_furthest orelse
          DestRefresh =:= lazy_random orelse
          DestRefresh =:= lazy_local orelse
          DestRefresh =:= lazy_remote orelse
          DestRefresh =:= lazy_newest orelse
          DestRefresh =:= lazy_oldest) ->
    cpg_data:get_groups(Scope, Pid, Delay);

destination_refresh(DestRefresh, _, _, _)
    when (DestRefresh =:= immediate_closest orelse
          DestRefresh =:= immediate_furthest orelse
          DestRefresh =:= immediate_random orelse
          DestRefresh =:= immediate_local orelse
          DestRefresh =:= immediate_remote orelse
          DestRefresh =:= immediate_newest orelse
          DestRefresh =:= immediate_oldest) ->
    ok;

destination_refresh(none, _, _, _) ->
    ok.