local filters = require "util.filters";
local st = require "util.stanza";
local dummy_stanza_mt = setmetatable({ __tostring = function () return ""; end }, { __index = st.stanza_mt });
local dummy_stanza = setmetatable(st.stanza(), dummy_stanza_mt);
module:depends("csi");
local function filter_chatstates(stanza)
if stanza.name == "message" then
stanza = st.clone(stanza);
stanza:maptags(function (tag)
if tag.attr.xmlns ~= "http://jabber.org/protocol/chatstates" then
return tag;
end
end);
if #stanza.tags == 0 then
return dummy_stanza;
end
end
return stanza;
end
module:hook("csi-client-inactive", function (event)
local session = event.origin;
filters.add_filter(session, "stanzas/out", filter_chatstates);
end);
module:hook("csi-client-active", function (event)
local session = event.origin;
filters.remove_filter(session, "stanzas/out", filter_chatstates);
end);