#include <Arduino.h>

#define LED_PIN 4
#define BUZZER_PIN 16

void setup() {
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  Serial.begin(115200); // Debugging on Serial Monitor
  Serial.println("ESP32 Receiver Initialized.");
}

void loop() {
  if (Serial.available()) {
    // Read sensor data as a string
    String receivedData = Serial.readStringUntil('\n');

    // Parse the data
    int separatorIndex = receivedData.indexOf(',');
    if (separatorIndex > 0) {
      int alcoholLevel = receivedData.substring(0, separatorIndex).toInt();
      int irStatus = receivedData.substring(separatorIndex + 1).toInt();

      // Control buzzer and LED
      if (alcoholLevel >= 2048) {
        tone(BUZZER_PIN,3000,1000);
      } else {
        digitalWrite(BUZZER_PIN, LOW);  // Deactivate buzzer
      }

      if (irStatus == 0) {
        digitalWrite(LED_PIN, HIGH); // Turn on LED
      } else {
        digitalWrite(LED_PIN, LOW);  // Turn off LED
      }
    }
  }

  delay(100); // Small delay
}