#include <WiFi.h>
#include <HTTPClient.h>

char ssid[] = "Wokwi-GUEST";     // Your WiFi SSID
char pass[] = "";                // Your WiFi password

const char* phoneNumber = "6282359159821";  // Phone number to send WhatsApp message
const char* apiKey = "1680760";         // CallMeBot API key

int pirPin = 4;   // PIR sensor pin
int motionCount = 0;

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

  connectToWiFi();
}

void loop() {
  checkMotion();
  delay(100);  // Small delay to avoid excessive checking
}

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

void checkMotion() {
  int motionState = digitalRead(pirPin);
  if (motionState == HIGH) {
    // Uncomment the following lines if you have an LED connected
    // int ledPin = 13;  // Example pin for LED
    // digitalWrite(ledPin, HIGH);  // Turn on LED
    // digitalWrite(ledPin, LOW);   // Turn off LED

    motionCount++;
    Serial.println("Motion detected!");
    Serial.print("Motion count: ");
    Serial.println(motionCount);

    // Send WhatsApp message
    String message = "Motion detected! Count: " + String(motionCount);
    sendWhatsAppMessage(message);
  }
}

void sendWhatsAppMessage(String message) {
  String url = "https://api.callmebot.com/whatsapp.php?phone=" + String(phoneNumber) + "&apikey=" + String(apiKey) + "&text=" + message;
  
  HTTPClient http;
  http.begin(url);
  
  int httpResponseCode = http.GET();
  if (httpResponseCode == 200) {
    Serial.println("Message sent successfully");
  } else {
    Serial.println("Error sending the message");
    Serial.print("HTTP response code: ");
    Serial.println(httpResponseCode);
  }
  
  http.end();
}