1# frozen_string_literal: true
 2
 3require "blather/client/dsl"
 4require "em_promise"
 5require "timeout"
 6
 7module BlatherNotify
 8	extend Blather::DSL
 9
10	@ready = Queue.new
11
12	when_ready { @ready << :ready }
13
14	def self.start(jid, password)
15		# workqueue_count MUST be 0 or else Blather uses threads!
16		setup(jid, password, nil, nil, nil, nil, workqueue_count: 0)
17
18		EM.error_handler(&method(:panic))
19
20		@thread = Thread.new {
21			EM.run do
22				client.run
23			end
24		}
25
26		Timeout.timeout(30) { @ready.pop }
27		at_exit { wait_then_exit }
28	end
29
30	def self.panic(e)
31		warn e.message
32		warn e.backtrace
33		exit! 2
34	end
35
36	def self.wait_then_exit
37		disconnected { EM.stop }
38		EM.add_timer(30) { EM.stop }
39		shutdown
40		@thread.join
41	end
42
43	def self.write_with_promise(stanza)
44		promise = EMPromise.new
45		client.write_with_handler(stanza) do |s|
46			if s.error?
47				promise.reject(s)
48			else
49				promise.fulfill(s)
50			end
51		end
52		promise
53	end
54
55	def self.command(node, sessionid=nil, action: :execute, form: nil)
56		Blather::Stanza::Iq::Command.new.tap do |cmd|
57			cmd.to = CONFIG[:sgx_jmp]
58			cmd.node = node
59			cmd.command[:sessionid] = sessionid if sessionid
60			cmd.action = action
61			cmd.command << form if form
62		end
63	end
64
65	def self.execute(command_node, form=nil)
66		write_with_promise(command(command_node)).then do |iq|
67			next iq unless form
68
69			write_with_promise(command(command_node, iq.sessionid, form: form))
70		end
71	end
72end