local t_insert = table.insert;

local mod_smacks = module:depends"smacks"

local function store_unacked_stanzas(session)

	local queue = session.outgoing_stanza_queue;

	local replacement_queue = {};

	session.outgoing_stanza_queue = replacement_queue;

	for _, stanza in ipairs(queue) do

		if stanza.name == "message" and stanza.attr.xmlns == nil and

				( stanza.attr.type == "chat" or ( stanza.attr.type or "normal" ) == "normal" ) then

			module:fire_event("message/offline/handle", { origin = session, stanza = stanza } )

		else

			t_insert(replacement_queue, stanza);

		end

	end

end

local handle_unacked_stanzas = mod_smacks.handle_unacked_stanzas;

local host_sessions = prosody.hosts[module.host].sessions;

mod_smacks.handle_unacked_stanzas = function (session)

	if session.username then

		local sessions = host_sessions[session.username].sessions;

		if next(sessions) == session.resource and next(sessions, session.resource) == nil then

			store_unacked_stanzas(session)

		end

	end

	return handle_unacked_stanzas(session);

end

function module.unload()

	mod_smacks.handle_unacked_stanzas = handle_unacked_stanzas;

end