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


const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "test.mosquitto.org";

WiFiClient espClient;
PubSubClient client(espClient);

const int buzzerPin = 12; // Ganti dengan pin yang Anda gunakan untuk mengontrol buzzer

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

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  
  String message = "";
  for (int i = 0; i < length; i++) {
    message += (char)payload[i];
  }
  Serial.println(message);
  if (message == "SIAP?") {
      client.publish("KDR5B2023", "033 SIAP");
  }
  else if (message == "033"){
      for (int i = 0; i < 3; i++) {
      tone(buzzerPin, 1000);
      delay(200);  // Buzzer aktif selama 1 detik
      noTone(buzzerPin);  // Matikan buzzer
      delay(200);
      }
      client.publish("KDR5B2023", "033 SELESAI");
  }
}
void setup() {
  Serial.begin(115200);
  setup_wifi();
  ledcSetup(0, 1000, 8);
  ledcAttachPin(buzzerPin, 0);
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  pinMode(buzzerPin, OUTPUT);
}

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

void reconnect() {
  while (!client.connected()) {
    String clientId = "1637182d-3329-44f2-9204-7354314f2b7c";
    clientId += String(random(0xffff), HEX);
    if (client.connect(clientId.c_str())) {
      Serial.println("Connected to MQTT broker");
      client.subscribe("KDR5B2023");
    } else {
      Serial.print("Failed, rc=");
      Serial.print(client.state());
      Serial.println(" Retrying in 5 seconds...");
      delay(5000);
    }
  }
}