#include <MIDI.h>

bool oldValues[9] = {
  1, 1, 1, 1, 1, 1, 1, 1, 1};
int tempState = 1;
int time = 0;
int bar = 1;
int pedalNote = 10;
int clearNote = 9;

void tick()
{
  if (time == 24)
    time = 0; 
    
      if (bar == 4)
    bar = 0; 


  if((time == 0)&&(bar == 0))
    digitalWrite(13,HIGH);
    
  if(time == 3) 
    digitalWrite(13,LOW);  


  if(time == 0)
    bar++;
    
  if((time == 0)&&(bar != 0))
  digitalWrite(12,HIGH);

  if(time == 3)
    digitalWrite(12,LOW);
    
  time++;


}

void goClock()
{
  time = 0;
  bar = 0;
}

void stopClock()
{
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
}

void setup() {
  pinMode(2, INPUT_PULLUP);
  pinMode(3, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);  
  pinMode(5, INPUT_PULLUP);
  pinMode(6, INPUT_PULLUP);
  pinMode(7, INPUT_PULLUP);
  pinMode(8, INPUT_PULLUP);
  pinMode(9, INPUT_PULLUP);
  pinMode(10, INPUT_PULLUP);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);

  MIDI.begin(MIDI_CHANNEL_OMNI);
  MIDI.setHandleClock(tick);
  MIDI.setHandleStart(goClock);
  // MIDI.setHandleContinue(goClock);
  MIDI.setHandleStop(stopClock);
  
  //Modeled
    digitalWrite(11,HIGH);
}

void loop() {
  MIDI.read();

  for(int i = 2; i <= 10; i++) {
    tempState = digitalRead(i);
    if(tempState != oldValues[i-2])
    {
      // debouncetime
      delay(1);
      tempState = digitalRead(i);

      if(tempState != oldValues[i-2]){
        if(i == 10)
        {
         if(tempState == 0)
         MIDI.sendNoteOn(pedalNote, 127, 1);
         else
         MIDI.sendNoteOff(pedalNote, 0, 1);
        }
        else if(i == 7)
        {
          if(tempState == 0){
         if(pedalNote == 10)
         {
         pedalNote = 11;
         clearNote = 13;
         digitalWrite(11,LOW);
         }
         else{
           
         pedalNote = 10;
         clearNote = 9;
         digitalWrite(11,HIGH);
         }
          }
        }
        else if(i == 9)
        {
        if(tempState == 0)
         MIDI.sendNoteOn(clearNote, 127, 1);
         else
         MIDI.sendNoteOff(clearNote, 0, 1);
        }
        else
        {
        if(tempState == 0)
          MIDI.sendNoteOn(i, 127, 1);
        else
          MIDI.sendNoteOff(i, 0, 1);
      }
          
      } 

    }
    oldValues[i-2] = tempState;
  }

}