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

// Setting Awal MQTT
char* mqttServer = "broker.emqx.io";
int mqttPort = 1883;
String myClientID = "Radz";
String Topic_1 = "radz/iot/2024";
String Topic_2 = "blk/test/radz";

//Membuat Object MQTT Client dan Jenis Koneksi
WiFiClient wifi;
PubSubClient mqttClient(wifi);

char* ssid = "Wokwi-GUEST";
char* pass = "";

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  WiFi.mode(WIFI_STA);    // Agar ESP32 menjadi mode Station
  WiFi.begin(ssid,pass);  // Meminta ESP untuk connect
  while(WiFi.status() != WL_CONNECTED){
    delay(100);
    Serial.println("Try Again..");
  }
  Serial.println("ESP 32 Connected Successfully");
  // Memerintahkan ESP untuk tahu alamat broker
  init_to_broker(mqttServer, mqttPort); 
  // Memerintahkan untuk Connect ke Broker
  connect_to_broker(myClientID);

}

void loop() {
  // put your main code here, to run repeatedly:
  int infoInt = 420;
  float infoFloat = 69.69;

  mqtt_publish(Topic_1, "Ini adalah pesan dalam bentuk string");
  mqtt_publish(Topic_1, "Pesan lain dalam bentuk string");
  char message[] = "Contoh pesan dalam bentuk char array";
  mqtt_publish(Topic_1, message);

  mqtt_publish(Topic_1, infoInt);
  mqtt_publish(Topic_1, infoFloat);

  delay(1000); // this speeds up the simulation
}

void init_to_broker(char* myMqttServer, int myMqttPort) {
  mqttClient.setServer(myMqttServer, myMqttPort); // Mengatur detail broker target yang digunakan
  // jika kita ingin menerima pesan untuk langganan yang dibuat oleh klien sebagai subscriber
  // mqttClient.setCallback(callback);           
}

void connect_to_broker(String clientName) {
  Serial.println("Connecting to MQTT Broker...");
  String clientId = "ESP32Client-" + clientName;
  mqttClient.connect(clientId.c_str()); // Connecting to Broker
  while (!mqttClient.connected()) {
      Serial.print("failed, rc=");
      Serial.println(mqttClient.state());
      Serial.println("Reconnecting to MQTT Broker..");
      delay(1000);  
  }
  Serial.print(clientId);
  Serial.println(" Device to Broker Connected.");
}

void mqtt_publish(String yourTopic, const char* yourPayload){
  mqttClient.publish(yourTopic.c_str(), yourPayload);
  Serial.print(yourTopic);
  Serial.print(" ==> ");
  Serial.println(yourPayload);
}

void mqtt_publish(String yourTopic, int yourPayload) {
  char temp[10];
  itoa(yourPayload, temp, 10);
  mqttClient.publish(yourTopic.c_str(), temp);
  Serial.print(yourTopic);
  Serial.print(" ==> ");
  Serial.println(yourPayload);
}

void mqtt_publish(String yourTopic, float yourPayload) {
  char temp[10];
  dtostrf(yourPayload, 4, 2, temp);
  mqttClient.publish(yourTopic.c_str(), temp);
  Serial.print(yourTopic);
  Serial.print(" ==> ");
  Serial.println(yourPayload);
}