#define BLYNK_TEMPLATE_ID "TMPL6iIdVKLAa"
#define BLYNK_TEMPLATE_NAME "Led Controller"
#define BLYNK_AUTH_TOKEN "RBbZzea0vIovW2al0B_5xQfoYkLdz3-F"

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

char ssid[] = "Wokwi-GUEST";
char pass[] = "";

int ledPins[10] = {23,22,21,19,18,5,17,16,4,2};
bool ledState[10] = {0};

// ===== Đếm LED =====
int countLedOn() {
  int count = 0;
  for (int i = 0; i < 10; i++) {
    if (ledState[i]) count++;
  }
  return count;
}

// ===== Update =====
void updateLedCount() {
  int count = countLedOn();

  Blynk.virtualWrite(V20, count);

  Serial.print("LED ON: ");
  Serial.println(count);
}

// ===== CONTROL TỪNG LED =====
BLYNK_WRITE(V0){ int s=param.asInt(); digitalWrite(ledPins[0],s); ledState[0]=s; updateLedCount();}
BLYNK_WRITE(V1){ int s=param.asInt(); digitalWrite(ledPins[1],s); ledState[1]=s; updateLedCount();}
BLYNK_WRITE(V2){ int s=param.asInt(); digitalWrite(ledPins[2],s); ledState[2]=s; updateLedCount();}
BLYNK_WRITE(V3){ int s=param.asInt(); digitalWrite(ledPins[3],s); ledState[3]=s; updateLedCount();}
BLYNK_WRITE(V4){ int s=param.asInt(); digitalWrite(ledPins[4],s); ledState[4]=s; updateLedCount();}
BLYNK_WRITE(V5){ int s=param.asInt(); digitalWrite(ledPins[5],s); ledState[5]=s; updateLedCount();}
BLYNK_WRITE(V6){ int s=param.asInt(); digitalWrite(ledPins[6],s); ledState[6]=s; updateLedCount();}
BLYNK_WRITE(V7){ int s=param.asInt(); digitalWrite(ledPins[7],s); ledState[7]=s; updateLedCount();}
BLYNK_WRITE(V8){ int s=param.asInt(); digitalWrite(ledPins[8],s); ledState[8]=s; updateLedCount();}
BLYNK_WRITE(V9){ int s=param.asInt(); digitalWrite(ledPins[9],s); ledState[9]=s; updateLedCount();}

// ===== ALL LED =====
BLYNK_WRITE(V10){
  int state = param.asInt();
  for(int i=0;i<10;i++){
    digitalWrite(ledPins[i], state);
    ledState[i] = state;
    Blynk.virtualWrite(i, state);
  }
  updateLedCount();
}

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

  for(int i=0;i<10;i++){
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);
    Blynk.virtualWrite(i, LOW);
  }

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  Blynk.syncAll(); // đồng bộ trạng thái
}

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