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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const int channel = 6;
const char* mqtt_broker = "broker.hivemq.com";
const int mqtt_port = 1883;
const char* topic = "wokwi/mqtt/chavaus";

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  Serial.print("Menghubungkan ke WiFi");
  WiFi.begin(ssid, password, channel);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Terhubung ke Wi-Fi!");
  
  client.setServer(mqtt_broker, mqtt_port);

  while (!client.connected()) {
    Serial.println("Menghubungkan ke MQTT Broker...");
    if (client.connect("ESP32Client")) {
      Serial.println("Terhubung ke MQTT Broker!");
    } else {
      Serial.print("Gagal Terhubung. Terjadi Kesalahan: ");
      Serial.println(client.state());
      delay(2000);
    }
  }
}
void loop() {
  client.loop();
  static unsigned long lastPubTime = 0;
  if (millis() - lastPubTime > 5000) {
    lastPubTime = millis();

    String message = "MSIB 7!";
    client.publish(topic, message.c_str());
    Serial.print("Pesan terkirim ke topik ");
    Serial.println(topic);
    Serial.println(message);
  }
}