const int photoResistorPin = A0; // Photoresistor pin
const int buzzerPin = 9; // Passive buzzer pin
const int buttonPin = 10; // Button pin
const int redPin = 6; // Red LED pin
const int greenPin = 3; // Green LED pin
const int bluePin = 5; // Blue LED pin

const int dt = 100;

int photoValue = 0; // Analog value read from the photoresistor

// Define variables for the analog values from the RGB LED channels
int redValue = 0;
int greenValue = 0;
int blueValue = 0;

// Define variables for the frequency and duration of the tone played by the buzzer
int toneFrequency = 0;
int toneDuration = 0;

bool stopSound = false; // Flag variable to stop the sound
bool stopLight = false; // Flag variable to stop the light

void setup() {
  pinMode(photoResistorPin, INPUT); // Set the photoresistor pin as input
  pinMode(buzzerPin, OUTPUT); // Set the buzzer pin as output
  pinMode(buttonPin, INPUT_PULLUP); // Set the button pin as input with pull-up resistor
  pinMode(redPin, OUTPUT); // Set the red LED pin as output
  pinMode(greenPin, OUTPUT); // Set the green LED pin as output
  pinMode(bluePin, OUTPUT); // Set the blue LED pin as output
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  // Read the analog value from the photoresistor
  photoValue = analogRead(photoResistorPin);
  
  // Map the photoresistor reading to RGB values between 0 and 255
  redValue = map(photoValue, 0, 1023, 0, 255);
  greenValue = map(photoValue, 0, 1023, 0, 255);
  blueValue = map(photoValue, 0, 1023, 0, 255);

  // Map the photoresistor reading to a frequency between 200 and 2000 Hz
  toneFrequency = map(photoValue, 0, 1023, 200, 2000);

  // Check if the button is pressed to stop the sound and light
  if (digitalRead(buttonPin) == LOW) {
    if(stopSound || stopLight) {
      stopSound = false; // Reset the flag variable to allow sound to start
      stopLight = false; // Reset the flag variable to allow light to start
    } else {
      stopSound = true; // Set the flag variable to stop the sound
      stopLight = true; // Set the flag variable to stop the light
    }
  }

  // Adjust the values of the RGB LED channels based on the mapped brightness value
  int brightness = redValue;
  
  // Adjust the frequency and duration of the tone played by the buzzer based on the mapped brightness value
  toneFrequency = map(brightness, 0, 255, 200, 2000);
  toneDuration = map(brightness, 0, 255, 50, 500);
  
  // Generate the tone if the flag variable is not set
  if (!stopSound) {
    tone(buzzerPin, toneFrequency, toneDuration); // Generate the tone
  } else {
    noTone(buzzerPin); // Stop the tone
  }

  // Generate the light if the flag variable is not set
  if (!stopLight) {

    // Control the light based on the lightOn variable
    analogWrite(redPin, redValue); // Set the red channel of the RGB LED
    analogWrite(greenPin, greenValue); // Set the green channel of the RGB LED
    analogWrite(bluePin, blueValue); // Set the blue channel of the RGB LED
  } else {
    digitalWrite(redPin, LOW); // Turn off the red LED
    digitalWrite(greenPin, LOW); // Turn off the green LED
    digitalWrite(bluePin, LOW); // Turn off the blue LED
  }

  // Print the photoresistor reading and frequency to the serial monitor
  Serial.print("Photoresistor reading: ");
  Serial.print(photoValue);
  Serial.print(", LDR Value: ");
  Serial.print(photoValue);
  Serial.print(", Red Value: ");
  Serial.print(redValue);
  Serial.print(", Green Value: ");
  Serial.print(greenValue);
  Serial.print(", Blue Value: ");
  Serial.print(blueValue);
  Serial.print(", Tone Frequency: ");
  Serial.print(toneFrequency);
  Serial.print(", Tone Duration: ");
  Serial.print(toneDuration);
  Serial.print(", Frequency: ");
  Serial.println(toneFrequency);

  delay(dt); // Wait for 100 ms before reading again
}