controll a sonoff-tasmota device via ruby

sonoff.rb

# Free to use. if you modify it, pls let me know, i might need your code aswell :-)
# github: krtschmr
# tim@krtschmr.de

# USAGE

# Straightforward

# Sonoff.on!("192.168.1.53")
# Sonoff.off!("192.168.1.53")
# Sonoff.restart!("192.168.1.53") # turns off, waits 3 seconds and turns on
#
# or control via instance
#
# s = Sonoff.new(192.168.1.53)
# s.state # returns current state
# s.read_state # updates the state
# s.on! # turns on
# s.off! # turns off
# s.restart! # turns off, waits 3 seconds and turns on

class Sonoff

  def self.on!(ip)
    new(ip, skip_init: true).on!
  end

  def self.off!(ip)
    new(ip, skip_init: true).off!
  end

  def self.restart!(ip)
    new(ip, skip_init: true).restart!
  end

  @@ip = nil
  attr_accessor :state

  def initialize(ip, args={})
    @@ip = ip
    self.state = "unknown"
    read_state unless args[:skip_init]
  end

  def read_state
    status = eval(send_cmd("status"))
    begin
      if status[:Status][:Power] == 1
        self.state = "on"
      else
        self.state = "off"
      end
    rescue
      self.state = "unknown"
    end
  end

  def on!
    send_cmd "Power%20On"
    self.state = "on"
  end

  def off!
    send_cmd "Power%20Off"
    self.state = "off"
  end

  def restart!
    off!; sleep(3); on!;
  end

  def ip
    @@ip
  end

  private

  def send_cmd(cmd)
    @@agent ||= Mechanize.new
    url = "http://#{@@ip}/cm?cmnd=#{cmd}"
    page = @@agent.get(url).body
  end
end