int redPin = A5;
int greenPin = A4;
int bluePin = A3;

int redValue = 255; // Full brightness for an Cathode RGB LED is 0, and off 255
int greenValue = 255; // Full brightness for an Cathode RGB LED is 0, and off 255
int blueValue = 255; // Full brightness for an Cathode RGB LED is 0, and off 255
//--------------------------------------------------------------------------------
int potPin = A2;
int potReading = 0;
//--------------------------------------------------------------------------------
// Our button wired to D3
// We wire D0 to the middle terminal on the switch
// And any of the two other terminals to ground
int switchPin = D3;
int switchState = LOW;
//--------------------------------------------------------------------------------
int flexPin = A1;
int flexReading = 0;
//--------------------------------------------------------------------------------
int RGBControl(String command){
    //0 is HI, 255 is LOW b/c CATHODE RGB LED
    String colors[3];
    colors[0]="";
    colors[1]="";
    colors[2]="";

    int index = 0;
    for( int i = 0; i < command.length(); i++ )
    {
      if( index < 3 ){
        char c = command.charAt(i);
        colors[index] += c;

        if( c == ',') index++;
      }
    }

    // get the red component...
    redValue = colors[0].toInt();
    // now green
    greenValue = colors[1].toInt();
    // now blue
    blueValue = colors[2].toInt();

   // write the mixed color
   analogWrite( redPin, redValue);
   analogWrite( greenPin, greenValue);
   analogWrite( bluePin, blueValue);

   return 1;
}

void setup() {
//Uses CATHODE RGB LED, 255 is OFF, 0 is ON
    pinMode(redPin, OUTPUT);
    pinMode(greenPin, OUTPUT);
    pinMode(bluePin, OUTPUT);
    //Start up as OFF
    analogWrite(redPin, 255);
    analogWrite(greenPin, 255);
    analogWrite(bluePin, 255);
    //RGB w Particle
    Particle.function("RGB LED", RGBControl);
    //Pot w Particle
    Particle.variable("pot", potReading);
    //Switch pulled high
    pinMode(switchPin , INPUT_PULLUP); // sets pin as input
    Particle.variable("switch", switchState);
    Particle.variable("flex", flexReading);
    
}

void loop() {
    switchState = digitalRead( switchPin );
    if( switchState == LOW ){
    // turn off all LEDs
    analogWrite(redPin, 255); //255 is OFF
    analogWrite(greenPin, 255); //255 is OFF
    analogWrite(bluePin, 255); //255 is OFF
    }
    else{
      // Use analogRead to read the potentiometer reading
      // This gives us a value from 0 to 4095
      potReading = analogRead(potPin);
      flexReading = analogRead(flexPin);
      blueValue = map(flexReading, 1270, 1890,0,255);
      // Map this value into the PWM range (0-255)
      // and store as the led brightness
      //redValue = map(potReading, 0, 4095, 0, 255);
      redValue = map(potReading, 18, 4037, 0, 255); //actual pot range is about 18-4037
      
      analogWrite(redPin, redValue);
      analogWrite(bluePin, blueValue);
    }
  
  delay(100);
}