#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL4LA_26FaW"
#define BLYNK_TEMPLATE_NAME "Traffic Light Controller 2"

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

char auth[] = "hYk6ZGwkNx5T-ewhGy8lglNebOWRcDv9";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;

#define red_button_pin        12 
#define orange_button_pin     14 
#define green_button_pin      27 
#define auto_mode_button_pin  23

#define red_button_vpin        V12
#define orange_button_vpin     V14
#define green_button_vpin      V27
#define auto_mode_button_vpin  V23

#define red_led_pin       2 
#define orange_led_pin    4 
#define green_led_pin     5 
#define auto_mode_led_pin 23

int red_led_state = 0; 
int orange_led_state = 0; 
int green_led_state = 0; 
int auto_mode_led_state = 0;

bool automatic_mode = false;
int current_led = 0;

int autoTimerId;

BLYNK_CONNECTED() {
  Blynk.syncVirtual(red_button_vpin);
  Blynk.syncVirtual(orange_button_vpin);
  Blynk.syncVirtual(green_button_vpin);
  Blynk.syncVirtual(auto_mode_button_vpin);
}

BLYNK_WRITE(red_button_vpin) {
  red_led_state = param.asInt();
  digitalWrite(red_led_pin, !red_led_state); 
}

BLYNK_WRITE(orange_button_vpin) {
  orange_led_state = param.asInt();
  digitalWrite(orange_led_pin, !orange_led_state); 
}

BLYNK_WRITE(green_button_vpin) {
  green_led_state = param.asInt();
  digitalWrite(green_led_pin, !green_led_state); 
}

BLYNK_WRITE(auto_mode_button_vpin) {
  auto_mode_led_state = param.asInt();
  digitalWrite(auto_mode_led_pin, !auto_mode_led_state); 
  automatic_mode = auto_mode_led_state;
  if (automatic_mode) {
    autoTimerId = timer.setInterval(2000L, automatic_traffic_light);
  } else {
    timer.deleteTimer(autoTimerId);
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(red_button_pin, INPUT_PULLUP);
  pinMode(orange_button_pin, INPUT_PULLUP);
  pinMode(green_button_pin, INPUT_PULLUP);
  pinMode(auto_mode_button_pin, INPUT_PULLUP);

  pinMode(red_led_pin, OUTPUT);
  pinMode(orange_led_pin, OUTPUT);
  pinMode(green_led_pin, OUTPUT);
  pinMode(auto_mode_led_pin, OUTPUT);

  digitalWrite(red_led_pin, HIGH); 
  digitalWrite(orange_led_pin, HIGH); 
  digitalWrite(green_led_pin, HIGH); 
  digitalWrite(auto_mode_led_pin, HIGH); 

  Blynk.begin(auth, ssid, pass);

  timer.setInterval(100L, listen_push_buttons);
}

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

void listen_push_buttons() {
  if (digitalRead(red_button_pin) == LOW) {
    delay(200);
    control_led(1);
    Blynk.virtualWrite(red_button_vpin, red_led_state);
  }
  if (digitalRead(orange_button_pin) == LOW) {
    delay(200);
    control_led(2);
    Blynk.virtualWrite(orange_button_vpin, orange_led_state);
  }
  if (digitalRead(green_button_pin) == LOW) {
    delay(200);
    control_led(3);
    Blynk.virtualWrite(green_button_vpin, green_led_state);
  }
  if (digitalRead(auto_mode_button_pin) == LOW) {
    delay(200);
    control_led(4);
    Blynk.virtualWrite(auto_mode_button_vpin, auto_mode_led_state);
  }
}

void control_led(int led) {
  if (led == 1) {
    red_led_state = !red_led_state;
    digitalWrite(red_led_pin, !red_led_state); 
  } else if (led == 2) {
    orange_led_state = !orange_led_state;
    digitalWrite(orange_led_pin, !orange_led_state); 
  } else if (led == 3) {
    green_led_state = !green_led_state;
    digitalWrite(green_led_pin, !green_led_state); 
  } else if (led == 4) {
    auto_mode_led_state = !auto_mode_led_state;
    digitalWrite(auto_mode_led_pin, !auto_mode_led_state); 
    automatic_mode = auto_mode_led_state;
    if (automatic_mode) {
      autoTimerId = timer.setInterval(2000L, automatic_traffic_light);
    } else {
      timer.deleteTimer(autoTimerId);
    }
  }
}

void automatic_traffic_light() {
  if (automatic_mode) {
    red_led_state = !red_led_state;
    digitalWrite(red_led_pin, !red_led_state); 
    delay(2000);
    red_led_state = !red_led_state;
    digitalWrite(red_led_pin, !red_led_state);

    orange_led_state = !orange_led_state;
    digitalWrite(orange_led_pin, !orange_led_state); 
    delay(2000);
    orange_led_state = !orange_led_state;
    digitalWrite(orange_led_pin, !orange_led_state); 

    green_led_state = !green_led_state;
    digitalWrite(green_led_pin, !green_led_state);
    delay(2000);
    green_led_state = !green_led_state;
    digitalWrite(green_led_pin, !green_led_state); 
  }
}