#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL3cXpeHkkL"
#define BLYNK_TEMPLATE_NAME "Traffic system"
#define BLYNK_AUTH_TOKEN "btE2mv9kUvX8U8-v_xCVqZKGNSGrOZzR"

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#define RED_LED_PIN 12
#define YELLOW_LED_PIN 13
#define GREEN_LED_PIN 14

#define IR_SENSOR_1_PIN 4

char auth[] = "btE2mv9kUvX8U8-v_xCVqZKGNSGrOZzR";  // Your Blynk auth token
char ssid[] = "Sanjay ugff";  // Your WiFi network name
char pass[] = "Sanjay2005";  // Your WiFi password

int vehicleCount = 0;

void setup() {
  // Debug console
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);

  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(YELLOW_LED_PIN, OUTPUT);
  pinMode(GREEN_LED_PIN, OUTPUT);
  
  pinMode(IR_SENSOR_1_PIN, INPUT_PULLUP);
}

void loop() {
  Blynk.run();

  // Generate a random number of vehicles between 0 and 20
  vehicleCount = random(21);

  // Control traffic lights based on vehicle count
  if (vehicleCount == 0) {
    // No vehicles, turn all lights off
    digitalWrite(RED_LED_PIN, HIGH);
    digitalWrite(YELLOW_LED_PIN, HIGH);
    digitalWrite(GREEN_LED_PIN, LOW);
    Blynk.virtualWrite(V0, 0); // All lights off, send 0
  } else if (vehicleCount >= 2 && vehicleCount <= 10) {
    // Few vehicles (2-10), turn green light on, turn off red and yellow
    digitalWrite(RED_LED_PIN, LOW);
    digitalWrite(YELLOW_LED_PIN, HIGH);
    digitalWrite(GREEN_LED_PIN, HIGH);
    Blynk.virtualWrite(V0, 2); // Green light, send 2
  } else {
    // Many vehicles (>10), turn red light on, turn off yellow and green
    digitalWrite(RED_LED_PIN, HIGH);
    digitalWrite(YELLOW_LED_PIN, LOW);
    digitalWrite(GREEN_LED_PIN, HIGH);
    Blynk.virtualWrite(V0, 1); // Red light, send 1
  }
  
  // Print vehicle count
  Serial.print("Number of Vehicles: ");
  Serial.println(vehicleCount);
  
  delay(1000); // Adjust delay as needed
}