1 local st = require "util.stanza";

     2 

     3 local xmlns_hats = "xmpp:prosody.im/protocol/hats:1";

     4 

     5 module:hook("muc-broadcast-presence", function (event)

     6 	-- Strip any hats claimed by the client (to prevent spoofing)

     7 	event.stanza:remove_children("hats", xmlns_hats);

     8 

     9 	local aff_data = event.room:get_affiliation_data(event.occupant.bare_jid);

    10 	local hats = aff_data and aff_data.hats;

    11 	if not hats then return; end

    12 	local hats_el;

    13 	for hat_id, hat_data in pairs(hats) do

    14 		if hat_data.active then

    15 			if not hats_el then

    16 				hats_el = st.stanza("hats", { xmlns = xmlns_hats });

    17 			end

    18 			hats_el:tag("hat", { uri = hat_id, title = hat_data.title }):up();

    19 		end

    20 	end

    21 	if not hats_el then return; end

    22 	event.stanza:add_direct_child(hats_el);

    23 end);