//#include <WiFi.h>
#include <PubSubClient.h>
#include <WiFiClientSecure.h> // Library tambahan untuk koneksi TLS
#include "hivemq_cert.h" // File header yang berisi deklarasi sertifikat
#include <ArduinoJson.h>
//#include <BluetoothSerial.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqttServer = "3ef7e525f8474fde88d328280a4bfd6f.s2.eu.hivemq.cloud"; // Ganti dengan alamat broker HiveMQ atau alamat broker MQTT lainnya
const int mqttPort = 8883; // Port MQTT umumnya adalah 1883
const int numRelays = 4; // Jumlah relay yang dikendalikan
const int lamPin[] = {32, 33, 26, 27}; // Pin untuk setiap relay
const char* mqttTopicPrefix = "relay/"; // Topik awalan untuk relay

WiFiClientSecure espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password, 6);

  for (int i = 0; i < numRelays; i++) {
    pinMode(lamPin[i], OUTPUT);
    digitalWrite(lamPin[i], LOW); // Matikan semua relay saat startup
  }
    while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  Serial.println("Connected to WiFi");
  client.setServer(mqttServer, mqttPort);
  
  // Impor sertifikat dari header "hivemq_cert.h"
  espClient.setCACert(hivemq_cert);

  client.setCallback(callback); // Menghubungkan fungsi callback dengan client MQTT
  while (!client.connected()) {
    Serial.println("Connecting to MQTT Broker...");
    String clientId = "Client-2";
    clientId += String(random(0xffff), HEX);
    if (client.connect(clientId.c_str(),"ipulcatur", "Ipulcatur37")) {
      Serial.println("Connected to MQTT Broker");
      // Subscribe ke semua topik relay
      for (int i = 1; i <= numRelays; i++) {
        String topic = mqttTopicPrefix + String(i);
        client.subscribe(topic.c_str());
      }
        } else {
      Serial.print("Failed to connect, rc=");
      Serial.print(client.state());
      Serial.println(" Retrying in 5 seconds...");
      delay(5000);
    }
  }
}


void loop() {


    if (!client.connected()) {
      reconnect();
  
  }
  client.loop();
  delay(1000);
  if (Serial.available()) {
    String message = Serial.readStringUntil('\n');
    client.publish(mqttTopicPrefix, message.c_str());
  }
}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message received on topic: ");
  Serial.println(topic);

  // Ubah payload menjadi String
  String message;
  for (int i = 0; i < length; i++) {
    message += (char)payload[i];
  }
  Serial.print("Received message: ");
  Serial.println(message);
  
  
// Periksa topik untuk setiap relay dan kendalikan relay yang sesuai
  for (int i = 1; i <= numRelays; i++) {
    String relayTopic = mqttTopicPrefix + String(i);
    if (String(topic) == relayTopic) {
      if (message.equals("ON")) {
        digitalWrite(lamPin[i - 1], HIGH); // Nyalakan relay ke-i
        Serial.print("Relay ");
        Serial.print(i);
        Serial.println(" dinyalakan!");
      } else if (message.equals("OFF")) {
        digitalWrite(lamPin[i - 1], LOW); // Matikan relay ke-i
        Serial.print("Relay ");
        Serial.print(i);
        Serial.println(" dimatikan!");
      }
    }
  }

}

void reconnect() {
  while (!client.connected()) {
    Serial.println("Connecting to MQTT Broker...");
    String clientId = "Client-2";
    clientId += String(random(0xffff), HEX);
    if (client.connect(clientId.c_str(),"ipulcatur", "Ipulcatur37")) {
      Serial.println("Connected to MQTT Broker");
      // Subscribe ke semua topik relay
      for (int i = 1; i <= numRelays; i++) {
        String topic = mqttTopicPrefix + String(i);
        client.subscribe(topic.c_str());
      }
    } else {
      Serial.print("Failed to connect, rc=");
      Serial.print(client.state());
      Serial.println(" Retrying in 5 seconds...");
      delay(5000);
    }
  }
}