const int ledPin = 7;       // Pin for the LED
const int buttonPin = 8;     // Pin for the button
const int potPin = A0;       // Pin for the potentiometer
unsigned long previousMillis = 0;  // Stores the last time the LED was updated
long onInterval = 1000;      // Interval for LED ON (milliseconds)
long offInterval = 1000;     // Interval for LED OFF (milliseconds)
bool timerEnabled = false;   // Boolean to control timer on/off state
int buttonState = 0;         // Current state of the button
bool ledState = false;       // Current state of the LED (on/off)

// Reporting variables
unsigned long totalOnTimeSeconds = 0; // Total time the LED was ON (in seconds)
unsigned long totalOfTimeSeconds = 0; // Total time the LED was ON (in seconds)

int totalOnCount = 0;                  // Total number of ON events

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);  // Button with internal pull-up resistor
  Serial.begin(9600);                 // Initialize serial communication for debugging (optional)
}

void loop() {
  // Read the button state (LOW when pressed due to pull-up)
  buttonState = digitalRead(buttonPin);

  // Toggle the timer state if the button is pressed
  if (buttonState == LOW) {
    timerEnabled = !timerEnabled;  // Toggle the timer state
    delay(200);                    // Simple debounce mechanism
    Serial.print("Timer state: ");
    Serial.println(timerEnabled ? "Enabled ------------" : "Disabled ------------");

    // If timer is disabled, report totals
    if (!timerEnabled) {
      Serial.print("Total ON Count: ");
      Serial.println(totalOnCount);
      Serial.print("Total ON Time (seconds): ");
      Serial.println(totalOnTimeSeconds/1000);
      Serial.print("Total OF Time (seconds): ");
      Serial.println(totalOfTimeSeconds/1000);
      Serial.print("Total ON + OF (seconds): ");
      Serial.println((totalOnTimeSeconds+totalOfTimeSeconds)/1000);




    }
  }

  // Read the potentiometer value and map it to on and off intervals
  int potValue = analogRead(potPin);
  onInterval = map(potValue, 0, 1023, 1000, 5000); // Map to a range for ON time
  offInterval = 2000; // Fixed OFF time (you can also map this if needed)

  // Only run the timer if it's enabled
  if (timerEnabled) {
    unsigned long currentMillis = millis();

    // Check the LED state and manage timing
    if (ledState) {
      // If the LED is ON, check the onInterval
      if (currentMillis - previousMillis >= onInterval) {
        // Turn the LED OFF
        digitalWrite(ledPin, LOW);
        ledState = false; // Update the LED state
        previousMillis = currentMillis; // Reset the timer
        totalOnCount++;  // Increment the ON event counter
        totalOnTimeSeconds += onInterval; // 1000; // Add to the total ON time in seconds
        totalOfTimeSeconds += offInterval;
        Serial.print("LED OFF, current OFF interval: ");
        Serial.println(offInterval);
      }
    } else {
      // If the LED is OFF, check the offInterval
      if (currentMillis - previousMillis >= offInterval) {
        // Turn the LED ON
        digitalWrite(ledPin, HIGH);
        ledState = true; // Update the LED state
        previousMillis = currentMillis; // Reset the timer
        Serial.print("LED ON, current ON interval: ");
        Serial.println(onInterval);
      }
    }
  }
}