#include <WiFi.h>
#include <PubSubClient.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "io.adafruit.com";
const int mqtt_port = 1883;  // Port untuk MQTT non-SSL (1883) atau SSL (8883)
const char* mqtt_username = "elien";
const char* mqtt_key = "aio_TGkS13E7EfszPBFePbKoIvcmCEkc"; //pake api key adfruit
const char* feed_key = "SENSOR";

int pinSensor = 34;
int nilaiSensor = 0;

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

  client.setServer(mqtt_server, mqtt_port);
}

void loop() {

  nilaiSensor = analogRead(pinSensor);
  Serial.println(nilaiSensor);

  if (!client.connected()) {
    reconnect();
  }

  client.loop();

  // Contoh data JSON yang ingin di kirim (ubah aja nilainya)
  String json = "{\"value\": " + String(nilaiSensor) + "}";

  char topic[100];
  sprintf(topic, "%s/feeds/%s/json", mqtt_username, feed_key);

  if (client.publish(topic, json.c_str())) {
    Serial.println("Data terkirim!");
  } else {
    Serial.println("Gagal mengirim data");
  }

  delay(5000); // delay 5 detik sebelum mengirim ulang (ubah pake millis kalo mau lebih bagus)
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    if (client.connect("arduinoClient", mqtt_username, mqtt_key)) {
      Serial.println("connected");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}