gistfile1.rb

require 'faraday'
require 'json'

class Temp
  def temp_request
    @temp_request ||= Faraday.post('https://api.spark.io/v1/devices/51ff70065067545733280187/analogread', {
      access_token: '',
      params: 'A0'
    })
  end

  def returned_value
    JSON.parse(temp_request.body)["return_value"]
  end

  def temp_voltage
    (returned_value/4095.0)*3.3
  end

  def get
    ((temp_voltage - 1.25) / 0.005).to_i
  end
end

class Oven
  attr_reader :temp

  def self.on
    Faraday.post('https://api.spark.io/v1/devices/51ff70065067545733280187/digitalwrite', {
      access_token: '',
      params: 'D7,HIGH'
    })
  end

  def self.off
    Faraday.post('https://api.spark.io/v1/devices/51ff70065067545733280187/digitalwrite', {
      access_token: '',
      params: 'D7,LOW'
    })
  end

  def get_temp
    Temp.new.get
  end

  def oven_run(duration, min_temp)
    time = 0
    while time < duration
      temp = get_temp
      puts temp
      if temp > min_temp
        Oven.off
        time += 1
      else
        Oven.on
      end
      sleep 1
    end
  end

  def presoak
    oven_run(100, 130)
  end

  def flow
    oven_run(10, 230)
  end
end

Oven.new.presoak
Oven.new.flow
puts "done"
while true
  puts Temp.new.get
end