#define BLYNK_TEMPLATE_ID "TMPL3BxlltXHq"
#define BLYNK_TEMPLATE_NAME "energy monitor"
#define BLYNK_AUTH_TOKEN "BNwl4DdgCytaaoFzxd0Iv8Tfd_1tYhoK"

#define BLYNK_PRINT Serial

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

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

#define CURRENT_PIN 34

float kwhTotal  = 0.0;
float unitPrice = 8.0;
float voltage   = 230.0;
float simMinutes = 0;

BlynkTimer timer;

void sendEnergyData() {
  if (!Blynk.connected()) {
    Serial.println("⚠️ Blynk disconnected, skipping...");
    return;
  }

  int raw = analogRead(CURRENT_PIN);
  float current = map(raw, 0, 4095, 0, 1500) / 100.0;
  float power = voltage * current;

  simMinutes += 1.0;
  float simHours = simMinutes / 60.0;

  // ✅ Fixed kWh accumulation
  kwhTotal += (power / 1000.0) * (2.0 / 3600.0);
  float totalCost = kwhTotal * unitPrice;

  Blynk.virtualWrite(V0, current);
  Blynk.virtualWrite(V1, power);
  Blynk.virtualWrite(V2, totalCost);

  Serial.print("Current: "); Serial.print(current, 2); Serial.print(" A");
  Serial.print(" | Power: "); Serial.print(power, 1);  Serial.print(" W");
  Serial.print(" | Cost: ₹"); Serial.println(totalCost, 2);
}

void setup() {
  Serial.begin(115200);
  analogSetAttenuation(ADC_11db);

  WiFi.begin(ssid, pass);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\n✅ WiFi Connected!");

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, "blynk.cloud", 80);
  Serial.println("✅ Blynk Started!");

  timer.setInterval(2000L, sendEnergyData);
}

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