// ============ Include Library ===================
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include "DHTesp.h"
#include <PubSubClient.h>
#include <Arduino_JSON.h>
// ============ End Include Library ===================

// ============ Define Pin ===================
#define DHT_PIN 18 // Pin untuk sensor DHT22
// ============ End Define Pin ===================

// ============ Variabel ===================
const char ssid[] = "Wokwi-GUEST";
const char pass[] = "";

// ============ MQTT ===============
const char *mqttServer = "l25fdb81.ala.asia-southeast1.emqxsl.com";  // Alamat broker MQTT yang baru
const char *topic_temperature = "monitoring/sensor/kelembapan";  // Topik untuk kelembapan
const char *topic_humidity = "monitoring/sensor/suhu";  // Topik untuk suhu
const char *mqtt_username = "Romi";  // Username baru
const char *mqtt_password = "romi";  // Password baru
int port = 8883;  // Port MQTT over TLS/SSL
// ============ End MQTT ===============

float temperature, humidity;
unsigned long lastTime = 0;
unsigned long intervalTime = 1000;

static const char *root_ca PROGMEM = R"EOF(
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
)EOF";

// ============ End Variabel ===================

// ============ Class ===================
DHTesp dht;  // Objek untuk sensor DHT22
WiFiClientSecure espClient;
PubSubClient client(espClient);
// ============ End Class ===================

// ============ Function ===================
void wifi_init();
void mqtt_init();
void dht_init();
void dht_read();
void convert_temperature();
void send_data();
void process_data();
// ============ End Function ===================

void setup() {
  Serial.begin(115200);
  wifi_init();
  mqtt_init();
  dht_init();
}

void loop() {
  client.loop();
  if (!client.connected()) {
    mqtt_init();
  }
  send_data();
}

void wifi_init() {
  Serial.print("Connecting to WiFi");
  WiFi.begin(ssid, pass, 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
}

void mqtt_init() {
  espClient.setCACert(root_ca);  // Set sertifikat SSL
  client.setServer(mqttServer, port);
  client.setCallback(callback);
  while (!client.connected()) {
    String client_id = "tugas-romi";
    client_id += String(WiFi.macAddress());
    Serial.printf("The client %s connects to the MQTT broker\n", client_id.c_str());
    if (client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {
      Serial.println("Connected to the MQTT broker");
      client.subscribe(topic_temperature);
      client.subscribe(topic_humidity); // Subscribe ke topik kelembaban dan suhu
    } else {
      Serial.print("failed with state ");
      Serial.print(client.state());
      delay(2000);
    }
  }
}

void callback(char *topic, byte *payload, unsigned int length) {
  // Callback function implementation
}

void dht_init() {
  dht.setup(DHT_PIN, DHTesp::DHT22);  // Inisialisasi sensor DHT22
}

void dht_read() {
  TempAndHumidity data = dht.getTempAndHumidity();  // Baca data suhu dan kelembaban
  temperature = data.temperature;
  humidity = data.humidity;
}

void send_data() {
  if ((millis() - lastTime) > intervalTime) {
    if (!client.connected()) {
      mqtt_init();
    }
    dht_read();  // Baca data dari sensor DHT22

    // Kirim data kelembaban ke MQTT
    JSONVar humidityObject;
    humidityObject["nilai"] = humidity;
    String sHumidityData = JSON.stringify(humidityObject);
    client.publish(topic_temperature, sHumidityData.c_str());

    // Kirim data suhu ke MQTT
    JSONVar temperatureObject;
    temperatureObject["nilai"] = temperature;
    String sTemperatureData = JSON.stringify(temperatureObject);
    client.publish(topic_humidity, sTemperatureData.c_str());

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

    lastTime = millis();
  }
}