#define BLYNK_TEMPLATE_ID "TMPL3vsr78rfR"
#define BLYNK_TEMPLATE_NAME "IIoT"
char auth[] = "aOAkDsg5kI_6R-SgE7xxrayVn2wMrjtg"; // Your Blynk Auth Token

#include<BlynkSimpleEsp32.h>

#define RX            16
#define TX            17
#define LED_PIN       2       // LED pin

#define Btemp         V0
#define Bpot          V1
#define Bhum          V2
#define Bled          V3


// Variable to store LED state
bool ledState = false;

void setup() {
  Serial.begin(9600);
  Blynk.begin(auth, "Wokwi-GUEST", "");

  // Serial2.begin(9600, SERIAL_8N1, RX, TX); // RX on GPIO 16, TX on GPIO 17  
  pinMode(LED_PIN, OUTPUT);   // Set LED pin as output
  Serial.println("Initializing...");
  delay(1000);
}

void loop() {
  Blynk.run();
  
  // if (Serial2.available()) {
  //   String data = Serial2.readStringUntil('\n'); // Read until newline
  //   Serial.println(data); // Print to Serial Monitor

  //   // Check for "Pot:", "Temp:", and "hum:" prefixes
  //   if (data.startsWith("Pot:")) 
  //   {
  //     String potValue = data.substring(4);      // Get the value after "Pot:"
  //     Blynk.virtualWrite(Bpot, potValue.toInt());         // Update Blynk with potentiometer value
  //   } 
  //   else if (data.startsWith("Temp:")) 
  //   {
  //     String tempValue = data.substring(5);     // Get the value after "Temp:"
  //     Blynk.virtualWrite(Btemp, tempValue.toInt());        // Update Blynk with temperature value
  //   } 
  //   else if (data.startsWith("hum:")) 
  //   {
  //     String humidityValue = data.substring(4);  // Get the value after "hum:"
  //     Blynk.virtualWrite(Bhum, humidityValue.toFloat());     // Update Blynk with humidity value
  //   }
  // }
  
  if (Serial.available()) {
    String data = Serial.readStringUntil('\n'); // Read until newline

    // Check for "Pot:", "Temp:", and "hum:" prefixes
    if (data.startsWith("Pot:")) 
    {
      String potValue = data.substring(4);      // Get the value after "Pot:"
      int pot = potValue.toInt();
      Blynk.virtualWrite(Bpot, pot);         // Update Blynk with potentiometer value
    } 
    else if (data.startsWith("Temp:")) 
    {
      String tempValue = data.substring(5);     // Get the value after "Temp:"
      int temp =  tempValue.toInt();
      Blynk.virtualWrite(Btemp, temp);        // Update Blynk with temperature value
    } 
    else if (data.startsWith("hum:")) 
    {
      String humidityValue = data.substring(4);  // Get the value after "hum:"
      int hum = humidityValue.toInt();
      Blynk.virtualWrite(Bhum, hum);     // Update Blynk with humidity value
    }
  }
  digitalWrite(LED_PIN, ledState ? HIGH : LOW);
}

// Blynk function to receive switch state
BLYNK_WRITE(Bled) {
  ledState = param.asInt(); // Get the value from the switch

}