#define BLYNK_TEMPLATE_ID "TMPL5CR-QR2Hx"
#define BLYNK_TEMPLATE_NAME "SuspiciousDetector"
#define BLYNK_AUTH_TOKEN "_PPpoPtP5tUOMRVRYoBS9ClLpMMGNp36"

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

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

int pirPin = 27;
int ledPin = 13;
int buzzerPin = 14;

unsigned long motionStart = 0;
int motionCount = 0;

void setup() {
  Serial.begin(115200);
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  Blynk.virtualWrite(V0, "System Online");

  Serial.println("Suspicious Activity Detector Started");
}

void loop() {
  Blynk.run();
  int pirValue = digitalRead(pirPin);

  if (pirValue == HIGH) {
    digitalWrite(ledPin, HIGH);

    if (motionStart == 0) {
      motionStart = millis();
      motionCount++;
    }
  } else {
    digitalWrite(ledPin, LOW);
    motionStart = 0;
  }

  if (motionStart != 0 && millis() - motionStart > 4000) {
    triggerAnomaly("Long continuous motion detected");
  }

  static unsigned long lastReset = millis();
  if (millis() - lastReset > 10000) {
    motionCount = 0;
    lastReset = millis();
  } else if (motionCount > 3) {
    triggerAnomaly("Rapid repeated motion");
  }
}

void triggerAnomaly(String reason) {
  Serial.println("ANOMALY: " + reason);

  digitalWrite(ledPin, HIGH);
  digitalWrite(buzzerPin, HIGH);
  delay(300);
  digitalWrite(buzzerPin, LOW);

  Blynk.virtualWrite(V1, 1);
  Blynk.logEvent("anomaly_alert", reason);
  Blynk.virtualWrite(V0, reason);

  delay(1000);
}