#define BLYNK_TEMPLATE_ID "TMPL3iUF2ruQb"
#define BLYNK_TEMPLATE_NAME "Sahil Tiwari"
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

// Blynk credentials
char auth[] = "DaVI--GeOxBWVFUp0kb6VsRPo3JUzA3g";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// Define pins for PIR sensors and LEDs
#define PIR1_PIN 22
#define PIR2_PIN 23
#define PIR3_PIN 26

#define LED1_PIN 14
#define LED2_PIN 12
#define LED3_PIN 13

// LED timers
unsigned long led1Timer = 0;
unsigned long led2Timer = 0;
unsigned long led3Timer = 0;
const unsigned long ledDuration = 8000; // 0.5 seconds (500 ms)

// Variables to store LED states
bool led1State = false;
bool led2State = false;
bool led3State = false;

void setup() {
  Serial.begin(115200);

  // Initialize Wi-Fi and Blynk
  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("WiFi connected");

  Blynk.begin(auth, ssid, pass);

  // Initialize PIR sensor pins as inputs
  pinMode(PIR1_PIN, INPUT);
  pinMode(PIR2_PIN, INPUT);
  pinMode(PIR3_PIN, INPUT);

  // Initialize LED pins as outputs
  pinMode(LED1_PIN, OUTPUT);
  pinMode(LED2_PIN, OUTPUT);
  pinMode(LED3_PIN, OUTPUT);

  // Turn off LEDs initially
  digitalWrite(LED1_PIN, LOW);
  digitalWrite(LED2_PIN, LOW);
  digitalWrite(LED3_PIN, LOW);
}

// Function to control LEDs via Blynk app
BLYNK_WRITE(V11) {
  led1State = param.asInt();
  digitalWrite(LED1_PIN, led1State ? HIGH : LOW);
  if (led1State) {
    led1Timer = millis();
  }
}

BLYNK_WRITE(V12) {
  led2State = param.asInt();
  digitalWrite(LED2_PIN, led2State ? HIGH : LOW);
  if (led2State) {
    led2Timer = millis();
  }
}

BLYNK_WRITE(V13) {
  led3State = param.asInt();
  digitalWrite(LED3_PIN, led3State ? HIGH : LOW);
  if (led3State) {
    led3Timer = millis();
  }
}

void loop() {
  Blynk.run();

  // Check PIR1
  if (digitalRead(PIR1_PIN) == HIGH) {
    digitalWrite(LED1_PIN, HIGH);
    led1Timer = millis();  // Reset the timer
    led1State = true;
  }

  // Check PIR2
  if (digitalRead(PIR2_PIN) == HIGH) {
    digitalWrite(LED2_PIN, HIGH);
    led2Timer = millis();  // Reset the timer
    led2State = true;
  }

  // Check PIR3
  if (digitalRead(PIR3_PIN) == HIGH) {
    digitalWrite(LED3_PIN, HIGH);
    led3Timer = millis();  // Reset the timer
    led3State = true;
  }

  // Turn off LEDs after 0.5 seconds
  if (led1State && ((millis() - led1Timer) > ledDuration)) {
    digitalWrite(LED1_PIN, LOW);
    led1State = false;
  }

  if (led2State && ((millis() - led2Timer )> ledDuration)) {
    digitalWrite(LED2_PIN, LOW);
    led2State = false;
  }

  if (led3State && ((millis() - led3Timer) > ledDuration)) {
    digitalWrite(LED3_PIN, LOW);
    led3State = false;
  }
}