int mic_pin = A0;

int lightPin1 = A4;
int lightPin2 = A5;

int  thresholdTouchMax = 800;
int thresholdTouchMin = -20;

int noise_level = 0;
const int sampleWindow = 50;

int ledPin1 = A1;
int ledPin2 = A2;
int ledPin3 = A3;
int ledPin4 = A4;

void setup(){

  pinMode(mic_pin, INPUT);
  pinMode(lightPin1, INPUT);
  pinMode(lightPin2, INPUT);


  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);

  Particle.subscribe("xingsuo/touchEvent1", touchGet);
  Particle.subscribe("xingsuo/noiseLevel1", noiseGet);

  Serial.begin(9600);
}

void loop(){

  String noise_level = noiseSensor();
  bool ifTouch = pressureSensor();
  //Serial.println(noise_level);
  //Serial.println(ifTouch);
}


void touchGet(String trigger)
{
  if(trigger == "touch")
  {

      for(int i=0;i<255;i++)
      {
        analogWrite(ledPin1, i);
        analogWrite(ledPin2, i);
        analogWrite(ledPin3, i);
        analogWrite(ledPin4, i);
        delay(100);
      }
      for(int i = 255; i>0; i--){
        analogWrite(ledPin1, i);
        analogWrite(ledPin2, i);
        analogWrite(ledPin3, i);
        analogWrite(ledPin4, i);
        delay(100);
      }

  }

}


bool pressureSensor(){

  //int buttonState = digitalRead( switchPin );
  int a1 =  analogRead(lightPin1)/4;
  int a2 =  analogRead(lightPin2)/4;


  int touch = a1-a2;
  //Serial.println(analogRead(pressure_pin));

  if(touch>=thresholdTouchMax || touch<thresholdTouchMin)
  {
    Particle.publish("xingsuo/touchEvent", "touch");
    Serial.println(a1-a2);
    return true;
  }else
  {
    return false;
  }
}

String noiseSensor(){
  unsigned long startMillis = millis(); // Start of sample window
  int highest_sample = 0;
  int lowest_sample = 1000;
  // collect data for 50 mS
  while (millis() - startMillis < sampleWindow)
  {
  int sample = analogRead( mic_pin );
  	// invert the range, and convert it to a percent
  	sample = map( sample, 0, 4095, 1000, 0 );
  	// now see if the sample is the lowest;

  	if ( sample > highest_sample ){
  	highest_sample = sample ;
  	}
  	if ( sample < lowest_sample ){
  	lowest_sample = sample;
  	}
  }
  int peakToPeak = highest_sample - lowest_sample;
  String level = String(peakToPeak);
  Particle.publish("xingsuo/noiseLevel", level);
  return level;

}

void touchGet(const char *event, const char *data)
{
  String dataStr = data;
  String test = "touch";
if(dataStr == "touch")
{

    for(int i=0;i<255;i++)
    {
      analogWrite(ledPin1, i);
      analogWrite(ledPin2, i);
      analogWrite(ledPin3, i);
      analogWrite(ledPin4, i);
      delay(100);
    }
    delay(2000);
    for(int i = 255; i>0; i--){
      analogWrite(ledPin1, i);
      analogWrite(ledPin2, i);
      analogWrite(ledPin3, i);
      analogWrite(ledPin4, i);
      delay(100);
    }

}

}

void noiseGet(const char *event, const char *data)
{

 String dataStr = data;
 int level = dataStr.toInt();
 Serial.println(level);
if(level <= noiseLevel1)
{
  playSound(0);
}
else if((level > noiseLevel1) && (level <= noiseLevel2) )
{
  playSound(1);
}
else if((level > noiseLevel2) && (level <= noiseLevel3) )
{
  playSound(2);
}
else if(level > noiseLevel3 )
{
  playSound(3);
}
}

void playSound(int level)
{
switch(level)
{
  case 0: ;
  case 1: {
            length=sizeof(tune1)/sizeof(tune1[0]);
            for(int x=0;x<length;x++)
            {
              tone(tonepin,tune1[x]);
              delay(500*durt[x]);
              noTone(tonepin);
            }
            delay(2000);
          };
  case 2: {
            length=sizeof(tune2)/sizeof(tune2[0]);
            for(int x=0;x<length;x++)
            {
              tone(tonepin,tune2[x]);
              delay(500*durt[x]);
              noTone(tonepin);
            }
            delay(2000);
          };

  case 3: {
            length=sizeof(tune3)/sizeof(tune3[0]);
            for(int x=0;x<length;x++)
            {
              tone(tonepin,tune3[x]);
              delay(200*durt[x]);
              noTone(tonepin);
            }
            delay(2000);
          };

          }

        }