#include "BluetoothSerial.h"

#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! please run `make menuconfig` to and enabled it
#endif

BluetoothSerial SerialBT;
const int redPin = 23;
const int yellowPin = 23;
const int greenPin = 23;

String message = "";
char incomingChar;

void setup() { 
  pinMode(redPin, OUTPUT);
  pinMode(yellowPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  Serial.begin(115200);
  SerialBT.begin("ESP32_SUV");
  Serial.println("The device started, now you can pair it with blueetooth!"); 
}

void loop() {
  if (SerialBT.available()){
    char incomingChar = SerialBT.read();
    if (incomingChar != '\n'){
      message += String(incomingChar);
    }
    else{
      message = "";
    }
    Serial.write(incomingChar);
  }
  if (message =="XYZ") {
    digitalWrite(redPin, HIGH);
    digitalWrite(yellowPin, LOW);
    digitalWrite(greenPin, LOW);
    Serial.println("Red light turned on");

  }
  else if (message =="ABC") {
    digitalWrite(redPin, LOW);
    digitalWrite(yellowPin, HIGH);
    digitalWrite(greenPin, LOW);
    Serial.println("yellow light turned on");
  }
  else if("message == UVW"){
    digitalWrite(redPin, LOW);
    digitalWrite(yellowPin, LOW);
    digitalWrite(greenPin, HIGH);
    Serial.println("green light turned on");
  }
  }
  delay(20);
}