// ———— Blynk credentials ————
#define BLYNK_TEMPLATE_ID    "TMPL29ZriYpNi"
#define BLYNK_TEMPLATE_NAME  "TrafficLightESP32"
#define BLYNK_AUTH_TOKEN     "v1Ep0O1VP4CqQD63FYdsIs3W-vR5PEIc"

// ———— Wi-Fi (Wokwi sim) ————
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// ———— Includes ————
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Blynk/BlynkTimer.h>   // ← correct path to BlynkTimer.h

// ———— Pins & Timer handles ————
const int greenPin  = 2;
const int yellowPin = 4;
const int redPin    = 5;

BlynkTimer timer;
int tGreen, tYellow, tRed;

// ———— Light‐on functions ————
void greenOn() {
  digitalWrite(greenPin,  HIGH);
  digitalWrite(yellowPin, LOW);
  digitalWrite(redPin,    LOW);
}
void yellowOn() {
  digitalWrite(greenPin,  LOW);
  digitalWrite(yellowPin, HIGH);
  digitalWrite(redPin,    LOW);
}
void redOn() {
  digitalWrite(greenPin,  LOW);
  digitalWrite(yellowPin, LOW);
  digitalWrite(redPin,    HIGH);
}

// ———— Start/Stop handler for V4 ————
BLYNK_WRITE(V4) {
  if (param.asInt()) {
    greenOn();
    timer.enable(tGreen);
    timer.enable(tYellow);
    timer.enable(tRed);
  } else {
    timer.disable(tGreen);
    timer.disable(tYellow);
    timer.disable(tRed);
    digitalWrite(greenPin,  LOW);
    digitalWrite(yellowPin, LOW);
    digitalWrite(redPin,    LOW);
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(greenPin,  OUTPUT);
  pinMode(yellowPin, OUTPUT);
  pinMode(redPin,    OUTPUT);

  // Connect to Blynk.Cloud
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // Create but disable your cycle timers:
  tGreen  = timer.setInterval(6500L,  greenOn);
  tYellow = timer.setInterval(13000L, yellowOn);
  tRed    = timer.setInterval(19500L, redOn);

  timer.disable(tGreen);
  timer.disable(tYellow);
  timer.disable(tRed);
}

void loop() {
  Blynk.run();
  timer.run();
}