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-rw-r--r--util/presence.lua38
1 files changed, 38 insertions, 0 deletions
diff --git a/util/presence.lua b/util/presence.lua
new file mode 100644
index 00000000..f6370354
--- /dev/null
+++ b/util/presence.lua
@@ -0,0 +1,38 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local t_insert = table.insert;
+
+local function select_top_resources(user)
+ local priority = 0;
+ local recipients = {};
+ for _, session in pairs(user.sessions) do -- find resource with greatest priority
+ if session.presence then
+ -- TODO check active privacy list for session
+ local p = session.priority;
+ if p > priority then
+ priority = p;
+ recipients = {session};
+ elseif p == priority then
+ t_insert(recipients, session);
+ end
+ end
+ end
+ return recipients;
+end
+local function recalc_resource_map(user)
+ if user then
+ user.top_resources = select_top_resources(user);
+ if #user.top_resources == 0 then user.top_resources = nil; end
+ end
+end
+
+return {
+ select_top_resources = select_top_resources;
+ recalc_resource_map = recalc_resource_map;
+}