#include <WiFi.h>
#include <ThingSpeak.h>
#include <DHT.h>
#include <ESP32Servo.h>

// Konfigurasi WiFi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Konfigurasi ThingSpeak
const unsigned long channelID = 2583457; // Ganti dengan Channel ID ThingSpeak Anda
const char* apiKey = "UWDB4XZRJXVT3BZW"; // Ganti dengan API Key ThingSpeak Anda
WiFiClient client;

// Pin yang digunakan
#define DHTPIN 15     // Pin data sensor DHT22 terhubung ke GPIO 15
#define TRIGPIN 5     // Pin Trig sensor HC-SR04 terhubung ke GPIO 5
#define ECHOPIN 18    // Pin Echo sensor HC-SR04 terhubung ke GPIO 18
#define RELAYPIN 2    // Pin kontrol relay terhubung ke GPIO 2
#define SERVOPIN 13   // Pin sinyal motor servo terhubung ke GPIO 13

// Konfigurasi sensor DHT22
#define DHTTYPE DHT22   // Jenis sensor DHT

DHT dht(DHTPIN, DHTTYPE);

// Objek servo
Servo myServo;

// Inisialisasi variabel
float temperature = 0;
float humidity = 0;
long duration;
int distance;

void setup() {
  // Inisialisasi Serial Monitor
  Serial.begin(115200);

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

  // Inisialisasi ThingSpeak
  ThingSpeak.begin(client);

  // Inisialisasi pin-pin
  pinMode(TRIGPIN, OUTPUT);
  pinMode(ECHOPIN, INPUT);
  pinMode(RELAYPIN, OUTPUT);

  // Inisialisasi servo
  myServo.attach(SERVOPIN);
}

void loop() {
  // Baca sensor DHT22
  humidity = dht.readHumidity();
  temperature = dht.readTemperature();

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

  // Baca sensor HC-SR04
  digitalWrite(TRIGPIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGPIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGPIN, LOW);
  duration = pulseIn(ECHOPIN, HIGH);
  distance = duration * 0.034 / 2;

  // Kirim data ke ThingSpeak
  ThingSpeak.setField(1, temperature);
  ThingSpeak.setField(2, humidity);
  ThingSpeak.setField(3, distance);
  int httpCode = ThingSpeak.writeFields(channelID, apiKey);
  if (httpCode == 200) {
    Serial.println("Data sent to ThingSpeak successfully");
  } else {
    Serial.println("Error sending data to ThingSpeak. HTTP error code: " + String(httpCode));
  }

  // Kontrol relay berdasarkan nilai suhu
  if (temperature > 30) {
    digitalWrite(RELAYPIN, HIGH); // Aktifkan relay (misalnya untuk menghidupkan kipas)
  } else {
    digitalWrite(RELAYPIN, LOW);  // Matikan relay
  }

  // Kendalikan motor servo berdasarkan jarak
  if (distance < 10) {
    myServo.write(90); // Posisi pintu terbuka (misalnya untuk pintu otomatis)
  } else {
    myServo.write(0);  // Posisi pintu tertutup
  }

  // Delay sebelum loop berikutnya
  delay(2000);
}