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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "broker.emqx.io";

WiFiClient espClient;
PubSubClient client(espClient);

int led = 22;
int led1 = 23;
char perintah;

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Pesan diterima [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();

  if (length > 0) {
    perintah = (char)payload[0];  // Ambil karakter pertama
    Serial.println(perintah);
  }
}

void reconnect() {
  // Loop hingga terkoneksi
  while (!client.connected()) {
    Serial.print("Menghubungkan ke MQTT...");
    // Ganti "ESP32Client" jadi unik kalau perlu
    if (client.connect("ESP32Client-arka")) {
      Serial.println("terhubung!");
      client.subscribe("/rumah/lampukamararka");
      client.subscribe("/rumah/lampukamartio");
    } else {
      Serial.print("Gagal, rc=");
      Serial.print(client.state());
      Serial.println(" coba lagi dalam 5 detik");
      delay(5000);
    }
  }
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Menghubungkan ke WiFi...");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("Terhubung ke WiFi!");
  Serial.println("IP Address: ");
  Serial.println(WiFi.localIP());

  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);

  pinMode(led, OUTPUT);  // Lampu kamar Arka
  pinMode(led1, OUTPUT); // Lampu kamar Tio
}

void loop() {
  // put your main code here, to run repeatedly:
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
 
  if(perintah == '1') {
    digitalWrite(led, HIGH);
  }
  else if(perintah == '0') {
    digitalWrite(led, LOW);
  }
  else if(perintah == '2') {
    digitalWrite(led1, HIGH);
  }
  else if(perintah == '3') {
    digitalWrite(led1, LOW);
  }


  String datasensor = String(random(20, 59));
  client.publish("data/suhu123", datasensor.c_str());

  String datasensor1 = String(random(50, 100));
  client.publish("data/kelembaban123", datasensor1.c_str());
}