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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* server = "api.thingspeak.com";
const String apiKey = "MXGOA0407N1FIBGC";

const int pirPin = 2; 

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

void loop() {
  int pirValue = digitalRead(pirPin);
  if (pirValue == HIGH) {
    Serial.println("Motion detected!");
    sendToThingSpeak(1); 
  } else {
    Serial.println("No motion detected.");
    sendToThingSpeak(0); 
  }
  delay(5000); 
}

void connectToWiFi() {
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
}

void sendToThingSpeak(int motion) {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = "http://" + String(server) + "/update?api_key=" + apiKey + "&field1=" + String(motion);
    Serial.println("Sending to ThingSpeak: " + url);
    http.begin(url);
    int httpResponseCode = http.GET();
    if (httpResponseCode == 200) {
      Serial.println("Data sent to ThingSpeak successfully");
    } else {
      Serial.print("Error sending data to ThingSpeak. HTTP error code: ");
      Serial.println(httpResponseCode);
    }
    http.end();
  } else {
    Serial.println("WiFi Disconnected. Cannot send data to ThingSpeak.");
  }
}