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

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

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

#define CURRENT_PIN 34

// Energy tracking
float kwhTotal  = 0.0;
float unitPrice = 8.0;    // ₹8 per kWh (Indian rate)
float voltage   = 230.0;  // Indian mains voltage

// Simulation time (1 loop = 1 minute simulated)
float simMinutes = 0;

BlynkTimer timer;

void sendEnergyData() {
  // Read potentiometer → map to 0–15A
  int raw = analogRead(CURRENT_PIN);
  float current = map(raw, 0, 4095, 0, 1500) / 100.0;

  // Power in Watts
  float power = voltage * current;

  // ✅ Fix: Simulate 1 minute per 2-second loop (for demo)
  simMinutes += 1.0;
  float simHours = simMinutes / 60.0;

  // Energy in kWh
  kwhTotal = (power / 1000.0) * simHours;

  // Cost in Rupees
  float totalCost = kwhTotal * unitPrice;

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

  // Serial Monitor
  Serial.print("Current: "); Serial.print(current, 2); Serial.print(" A");
  Serial.print(" | Power: "); Serial.print(power, 1);  Serial.print(" W");
  Serial.print(" | kWh: ");  Serial.print(kwhTotal, 4);
  Serial.print(" | Cost: ₹");Serial.println(totalCost, 2);
}

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

  Serial.println("Connecting to Blynk...");
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  Serial.println("Connected!");

  timer.setInterval(2000L, sendEnergyData);
}

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