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

#define DHTPIN 4
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* apiKey = "AEJTLPY3M7IBADVH";
const char* server = "http://api.thingspeak.com/update";

int doorPin = 12;
int lightPin = 13;
int doorbellPin = 14;

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("Connected to WiFi");

  dht.begin();
  pinMode(doorPin, OUTPUT);
  pinMode(lightPin, OUTPUT);
  pinMode(doorbellPin, INPUT_PULLUP);
}

void loop() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  int doorStatus = digitalRead(doorbellPin);
  Serial.println(doorStatus);
  if (doorStatus == LOW) {
    digitalWrite(doorPin, HIGH); // Doorbell pressed, door is open
  } else {
    digitalWrite(doorPin, LOW); // Doorbell not pressed, door is closed
  }

  // Simulate lighting control
  if (temperature > 25) {
    digitalWrite(lightPin, HIGH); // Turn on the light if temperature > 25°C
  } else {
    digitalWrite(lightPin, LOW); // Turn off the light if temperature <= 25°C
  }

  // Print data to the serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C ");
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = String(server) + "?api_key=" + apiKey + "&field1=" + String(temperature) + "&field2=" + String(humidity) + "&field3=" + String(digitalRead(doorPin)) + "&field4=" + String(digitalRead(lightPin));
    http.begin(url.c_str());
    int httpCode = http.GET();

    if (httpCode > 0) {
      String payload = http.getString();
      Serial.println(payload);
    } else {
      Serial.println("Error in HTTP request");
    }
    http.end();
  } else {
    Serial.println("WiFi not connected");
  }

  delay(20000); // Update every 20 seconds
}