#include <Arduino.h>
#include <BluetoothSerial.h>
//#include <WiFi.h>
//#include "esp_coexist.h"

BluetoothSerial ESP_BT;  // Bluetooth Serial object
const int RedLED = 2;    // Red LED connected to GPIO 2
//const int YellowLED = 18;
//const int GreenLED = 19;

void setup() {
  Serial.begin(115200);  // Start serial communication for debugging
  delay(1000); // Allow time for Serial to initialize
  ESP_BT.begin("ESP32 WOKWI LED Control");  // Start Bluetooth with device name
  pinMode(RedLED, OUTPUT);  // Set Red LED pin as output
  //pinMode(YellowLED, OUTPUT);
  //pinMode(GreenLED, OUTPUT);

  //Serial.println("Setting Bluetooth priority over WiFi...");
  // Set Bluetooth priority
 /* esp_err_t err = esp_coex_status_bit_set(ESP_COEX_ST_TYPE_BT, 1); // Replace with actual flag
  if (err == ESP_OK) {
    Serial.println("Bluetooth priority set successfully.");
  } else {
    Serial.printf("Failed to set Bluetooth priority: %d\n", err);
  }
*/
  //Serial.println("Bluetooth Initialized. Pair with 'ESP32 LED Control' and send 'Red/Yellow/Green LED ON' or 'Red/Yellow/Green LED OFF'.");
}

void loop() {
  if (ESP_BT.available()) {  // Check if data is available
    String command = ESP_BT.readString();  // Read the command sent via Bluetooth
    command.trim();  // Remove any extra spaces or newline characters
    Serial.println(command);

    if (command == "RedON") {
      digitalWrite(RedLED, HIGH);  // Turn Red LED on
    //  Serial.println("Red LED ON");
    //  ESP_BT.println("Red LED ON");
    } 
    
    if (command == "RedOFF") {
      digitalWrite(RedLED, LOW);   // Turn Red LED off
    //  Serial.println("Red LED OFF");
    // ESP_BT.println("Red LED OFF");
    } 
    /*
    if (command == "YellowON") {
      digitalWrite(YellowLED, HIGH);
      //Serial.println("Yellow LED ON");
      //ESP_BT.println("Yellow LED ON");
    }

    if (command == "YellowOFF") {
      digitalWrite(YellowLED, LOW);
      //Serial.println("YELLOW LED OFF");
      //ESP_BT.println("Yellow LED OFF");
    }

    /* if (command == "GreenON") {
      digitalWrite(GreenLED, HIGH);
      Serial.println("Green LED ON");
      ESP_BT.println("Green LED ON");
    }

    if (command == "GreenOFF") {
      digitalWrite(GreenLED, LOW);
      Serial.println("Green LED OFF");
      ESP_BT.println("Green LED OFF");
    } */
      ESP_BT.println("Invalid Command. Use 'Red/Yellow/GreenON' or 'Red/Yellow/GreenOFF'.");
    }
  delay(20);
}