class HumbleRPiPluginMagneticSwitch

# File lib/humble_rpi-plugin-magneticswitch.rb, line 18
def initialize(settings: {}, variables: {})

  @nc = settings[:nc] || true
  @pins = settings[:pins].map {|x| RPiPinIn.new x, pull: settings[:pull]}
  @notifier = variables[:notifier]
  @device_id = variables[:device_id] || 'pi'      

  
end

# File lib/humble_rpi-plugin-magneticswitch.rb, line 28
def start()
  
  notifier = @notifier
  device_id = @device_id
  nc = @nc
      
  puts 'ready to detect magnetic switches'
  
  @pins.each.with_index do |pin, i|
    
    puts 'magnetic switch sensor %s on GPIO %s enabled ' % [i+1, pin.to_s]
    
    n = (i+1).to_s
    
    threads = []
    threads << Thread.new do      

      pin.watch do |value|
        
        state = value == 0 ? :opened : :closed
        
        input_operation = :unknown
        
        strategy = lambda do |defense|

          coping_with_it = []
          coping_with_it << defense.rapid?(0.5)

          input_operation = coping_with_it.all? ? :normal : :erratic
        end

        # detect erratic input behaviour by checking if the door is
        # opened within 0.5 of a second after it was last opened
        
        SelfDefense.new(&strategy) if state == :opened
        
        if input_operation == :erratic then

          notifier.notice "%s/magneticswitch/%s: " + \
              " door error: Erratic input operation" % [device_id, i]
          raise PluginMagneticSwitchException, 'Erratic input operation'
        end
            
        notifier.notice "%s/magneticswitch/%s: door %s" % \
                                                [device_id, i, state]
        
      end
      
    end
    threads.each(&:join)
    
  end
  
end