dump_zwavejs.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

require "json"
require "websocket-eventmachine-client"

EM.run do

  ws = WebSocket::EventMachine::Client.connect(:uri => ARGV[0] || "ws://localhost:3000")

  ws.onopen do
    puts "Connected"
  end

  ws.onmessage do |msg, type|
    if type == :text
      message = JSON.parse(msg)
      if message["type"] == "version"
        ws.send({ command: "initialize", schemaVersion: 40, additionalUserAgentComponents: "ruby/0.1" }.to_json)
        ws.send({ command: "start_listening" }.to_json)
      end
      if message["type"] == "result" && message["success"] && message["result"].key?("state")
        puts "received state"
        File.write("state.json", msg)
        next
      end
    end
    puts "Received message: #{msg} (#{type.inspect})"
  end

  ws.onclose do |code, reason|
    puts "Disconnected with status code: #{code} (#{reason})"
  end
end