// Define the Blynk print target as Serial
#define BLYNK_PRINT Serial

// Blynk template configuration
#define BLYNK_TEMPLATE_ID "TMPL23mDYSfB4"
#define BLYNK_TEMPLATE_NAME "IOTProject1"
#define BLYNK_AUTH_TOKEN "rEDNF3gphN4vbz3sFW-iw-ZPhD9IbR2o"

// Include necessary libraries
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>

// Initialize DHT sensor on pin 15 for temperature and humidity readings
DHT dht(15, DHT22);

// Define pin numbers for LEDs and PIR sensor
#define led1 17  // LED 1 connected to GPIO 17
#define led2 18  // LED 2 connected to GPIO 18

// Define virtual pins
#define V_TEMP V3   // Temperature
#define V_HUMID V4  // Humidity
#define V_LED1 V0   // LED 1
#define V_LED2 V1   // LED 2

// WiFi credentials
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// Blynk timer
BlynkTimer timer;

// Blynk connected callback
BLYNK_CONNECTED() {
  Blynk.syncVirtual(V_LED1); // Synchronize LED1 state
  Blynk.syncVirtual(V_LED2); // Synchronize LED2 state
}

// Callback for virtual button to control LED 1
BLYNK_WRITE(V_LED1) {
  int state = param.asInt(); // Get the button state (0 or 1)
  digitalWrite(led1, state); // Control LED1
}

// Callback for virtual button to control LED 2
BLYNK_WRITE(V_LED2) {
  int state = param.asInt(); // Get the button state (0 or 1)
  digitalWrite(led2, state); // Control LED2
}

// Timer function to send DHT sensor data
void sendDHTData() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();
  Blynk.virtualWrite(V_TEMP, temperature);
  Blynk.virtualWrite(V_HUMID, humidity);
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print("%\t");
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");
}

// Main setup function
void setup() {
  Serial.begin(115200);

  pinMode(led1, OUTPUT); // Set LED1 as output
  pinMode(led2, OUTPUT); // Set LED2 as output

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  timer.setInterval(2000L, sendDHTData); // Send sensor data every 2 seconds
}

// Main loop
void loop() {
  Blynk.run(); // Run Blynk
  timer.run(); // Run the timer
}