// Pin Definitions
const int gasSensorSimPin = 34; // Potentiometer simulating gas sensor
const int vibrationSensorSimPin = 35; // Potentiometer simulating vibration sensor
const int ledPin = 2 ; // LED pin for alerts
const int buzzerPin = 27; // Buzzer pin for alerts

// Thresholds
const int gasThreshold = 400; // Simulated gas detection threshold
const int vibrationThreshold = 500; // Simulated vibration threshold

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);

  // Configure Pins
  pinMode(gasSensorSimPin, INPUT);
  pinMode(vibrationSensorSimPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);

  // Initial States
  digitalWrite(ledPin, LOW);
  digitalWrite(buzzerPin, LOW);

  Serial.println("Volcanic Eruption Detection System Initialized!");
}

void loop() {
  // Read simulated sensor values
  int gasValue = analogRead(gasSensorSimPin);
  int vibrationValue = analogRead(vibrationSensorSimPin);

  // Print sensor readings for debugging
  Serial.print("Gas Sensor Value (Sim): ");
  Serial.print(gasValue);
  Serial.print(" | Vibration Sensor Value (Sim): ");
  Serial.println(vibrationValue);

  // Check conditions
  if (gasValue > gasThreshold || vibrationValue > vibrationThreshold) {
    // Trigger Alerts
    Serial.println("Alert! Possible volcanic eruption detected!");
    digitalWrite(ledPin, HIGH);
    digitalWrite(buzzerPin, HIGH);
    delay(1000); // Keep the alert on for 1 second
  } else {
    // No Alert
    digitalWrite(ledPin, LOW);
    digitalWrite(buzzerPin, LOW);
  }

  delay(500); // Small delay for sensor readings
}