local st = require "util.stanza"; local jid = require "util.jid"; local id = require "util.id"; local pubsub = module:depends "pubsub".service; local name = module:get_option_string("name", "PubSub Service on "..module.host); local help = name..[[ Commands: - `help` - this help message - `list` - list available nodes - `subscribe node` - subscribe to a node - `unsubscribe node` - unsubscribe from a node]]; if pubsub.get_last_item then -- COMPAT not available in 0.10 help = help .. "\n- `last node` - send the last item (again)" end module:hook("message/host", function (event) local origin, stanza = event.origin, event.stanza; local body = stanza:get_child_text("body"); if not body then return end -- bail out local from = stanza.attr.from; local reply = st.reply(stanza); reply.attr.id = id.medium(); local command, node_arg = body:match("^(%a+)%s+(.*)"); command = (command or body):lower(); if command == "help" then reply:body(help); elseif command == "list" then local ok, nodes = pubsub:get_nodes(from); if ok then local list = {}; for node, node_obj in pairs(nodes) do table.insert(list, ("- `%s` %s"):format(node, node_obj.config.title or "")); end reply:body(table.concat(list, "\n")); else reply:body(nodes); end elseif command == "subscribe" then local ok, err = pubsub:add_subscription(node_arg, from, jid.bare(from), { ["pubsub#include_body"] = true }); reply:body(ok and "OK" or err); elseif command == "unsubscribe" then local ok, err = pubsub:remove_subscription(node_arg, from, jid.bare(from)); reply:body(ok and "OK" or err); elseif command == "last" and pubsub.get_last_item then local ok, item_id, item = pubsub:get_last_item(node_arg, from); if not ok then reply:body(item_id); -- err message elseif not item_id then reply:body("node is empty"); else pubsub.config.broadcaster("items", node_arg, { [from] = { ["pubsub#include_body"] = true } }, item); reply:body("OK"); end else reply:body("Unknown command. `help` to list commands."); end origin.send(reply); return true; end);