class MorsecodeKeypad

# File lib/morsecode_keypad.rb, line 14
def initialize(dash: 4, dot: 17, separator: 27, sendx: 22, notifier: nil)

  @pins = {dash: dash, dot: dot, separator: separator, sendx: sendx}
  
  @notifier = notifier
  @dash_pin, @dot_pin, @separator_pin, @send_pin = \
    [dash, dot, separator, sendx].map {|pin| RPiPinIn.new(pin, pull: :up)}
  @mc = ''
  
end

# File lib/morsecode_keypad.rb, line 25
def start()

  Thread.new do
    @dash_pin.watch_high do |v|

      puts "dash: " +  Time.now.to_s if @notifier.nil?
      on_dash()

    end
  end

  Thread.new do
    @dot_pin.watch_high do |v|

      puts "dot: " +  Time.now.to_s if @notifier.nil?
      on_dot()

    end
  end

  Thread.new do
    @separator_pin.watch_high do |v|

      puts "separator: " +  Time.now.to_s if @notifier.nil?
      on_separator()

    end
  end

  @send_pin.watch_high do |v|

    puts "send: " +  Time.now.to_s if @notifier.nil?
    on_send()

  end

end

# File lib/morsecode_keypad.rb, line 68
def test()
  
  pins = %i(dash dot separator sendx)
  buttons = {}
  i = 0

  Thread.new do 
    @dash_pin.watch_high do |v| 
      
      buttons[pins[i]] = @pins[:dash]
      puts pins[i].to_s + ": GPIO " +  buttons[pins[i]].to_s 
      i += 1
      
      puts buttons.inspect if i > 3
      Thread.stop
      
    end
  end
  
  Thread.new do 
    @dot_pin.watch_high do |v| 
      
      buttons[pins[i]] = @pins[:dot]
      puts pins[i].to_s + ": GPIO " +  buttons[pins[i]].to_s
      i += 1
      
      puts buttons.inspect if i > 3
      Thread.stop
      
    end
  end    
  
  Thread.new do 
    @separator_pin.watch_high do |v| 
      
      buttons[pins[i]] = @pins[:separator]
      puts pins[i].to_s + ": GPIO " +  buttons[pins[i]].to_s
      i += 1
      
      puts buttons.inspect if i > 3
      Thread.stop
      
    end
  end      
  
  Thread.new do 
    @send_pin.watch_high do |v| 
      
      buttons[pins[i]] = @pins[:sendx]
      puts pins[i].to_s + ": GPIO " +  buttons[pins[i]].to_s
      i += 1
      
      puts buttons.inspect if i > 3
      Thread.stop
      
    end
  end      

end

# File lib/morsecode_keypad.rb, line 130
def on_dash()
  @mc << DASH
end

# File lib/morsecode_keypad.rb, line 134
def on_dot()
  @mc << DOT
end

# File lib/morsecode_keypad.rb, line 143
def on_send()

  if @notifier then
    @notifier.update @mc 
  else
    puts @mc
  end

  @mc = ''

end

# File lib/morsecode_keypad.rb, line 138
def on_separator()
  @mc << SEPARATOR
  @mc.sub!(/[^4]+444$/,'') if @mc =~ /444$/   # undo command?
end