#include <WiFi.h>
#include <MQTT.h>

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

WiFiClient net;
MQTTClient client;

unsigned long lastMillis = 0;

int pot;

void connect() {
  Serial.print("checking wifi...");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(1000);
  }

  Serial.print("\nconnecting...");
  while (!client.connect("fadiah")) {
    Serial.print(".");
    delay(1000);
  }

  Serial.println("\nconnected!");

  client.subscribe("gedung1/fadiah");
  // client.unsubscribe("/hello");
}

void dataDiterima(String &topic, String &payload) {
  Serial.println("incoming: " + topic + " - " + payload);

  if(topic == "gedung1/fadiah" && payload =="nyala"){
  digitalWrite(5, HIGH);
  } else if(topic == "gedung1/fadiah" && payload =="mati"){
  digitalWrite(5, LOW);
  }  else if(topic == "gedung1/fadiah" && payload =="on"){
  digitalWrite(23, HIGH);
  } else if(topic == "gedung1/fadiah" && payload =="off"){
  digitalWrite(23, LOW);
 }
} 

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, pass);

  client.begin("broker.emqx.io", net);
  client.onMessage(dataDiterima);

  connect();
  pinMode(5, OUTPUT);
  pinMode(23, OUTPUT);
}

void loop() {
  client.loop();
  delay(10);  // <- fixes some issues with WiFi stability

  pot = analogRead(34);

}