prosody-modules
f728c8c42860
mod_pubsub_text_interface/mod_pubsub_text_interface.lua

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mod_pubsub_text_interface/mod_pubsub_text_interface.lua @ 3293:f728c8c42860

mod_pubsub_text_interface: Add a 'last' command for sending the last item
author Kim Alvefur <zash@zash.se>
date Fri, 31 Aug 2018 21:16:45 +0200
parent 3250:5801b5cf8f54
child 3328:7d39ffd058d5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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ca856a892719 mod_pubsub_text_interface: A chat interface to PubSub
Kim Alvefur <zash@zash.se>
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1 local st = require "util.stanza";
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2 local jid = require "util.jid";
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3 local id = require "util.id";
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4
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5 local pubsub = module:depends "pubsub".service;
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6
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7 local name = module:get_option_string("name", "PubSub Service on "..module.host);
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8 local help = name..[[
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9
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10 Commands:
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11
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12 - `help` - this help message
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13 - `list` - list available nodes
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14 - `subscribe node` - subscribe to a node
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15 - `unsubscribe node` - unsubscribe from a node
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16 - `last node` - send the last item (again)
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17 ]];
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18
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19 module:hook("message/host", function (event)
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20 local origin, stanza = event.origin, event.stanza;
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21 local body = stanza:get_child_text("body");
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22 if not body then return end -- bail out
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23
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24 local from = stanza.attr.from;
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25
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26 local reply = st.reply(stanza);
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27 reply.attr.id = id.medium();
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28
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8f4a7084c466 mod_pubsub_text_interface: Rename variable to avoid name clash [luacheck]
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29 local command, node_arg = body:match("^(%a+)%s+(.*)");
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30 command = (command or body):lower();
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31
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32 if command == "help" then
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33 reply:body(help);
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34 elseif command == "list" then
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35 local ok, nodes = pubsub:get_nodes(from);
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36 if ok then
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37 local list = {};
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38 for node, node_obj in pairs(nodes) do
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39 table.insert(list, ("- `%s` %s"):format(node, node_obj.config.title or ""));
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40 end
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41 reply:body(table.concat(list, "\n"));
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42 else
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43 reply:body(nodes);
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44 end
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45 elseif command == "subscribe" then
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8f4a7084c466 mod_pubsub_text_interface: Rename variable to avoid name clash [luacheck]
Kim Alvefur <zash@zash.se>
parents: 3248
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46 local ok, err = pubsub:add_subscription(node_arg, from, jid.bare(from), { ["pubsub#include_body"] = true });
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47 reply:body(ok and "OK" or err);
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48 elseif command == "unsubscribe" then
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49 local ok, err = pubsub:remove_subscription(node_arg, from, jid.bare(from));
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50 reply:body(ok and "OK" or err);
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51 elseif command == "last" then
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52 local ok, item_id, item = pubsub:get_last_item(node_arg, from);
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53 if not ok then
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54 reply:body(item_id); -- err message
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55 elseif not item_id then
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56 reply:body("node is empty");
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57 else
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58 pubsub.config.broadcaster("items", node_arg, {
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59 [from] = { ["pubsub#include_body"] = true }
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60 }, item);
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61 reply:body("OK");
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62 end
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63 else
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64 reply:body("Unknown command. `help` to list commands.");
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65 end
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66 origin.send(reply);
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67 return true;
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68 end);