#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <PubSubClient.h>
// mosquitto_sub -h 10.0.0.89 -p 8883 -u bblp -P 13003498

// WiFi settings
const char *ssid = "Neangerang";            // Replace with your WiFi name
const char *password = "Forest3736alley!";  // Replace with your WiFi password

// MQTT Broker settings
const char *mqtt_broker = "10.0.0.89";    // EMQX broker endpoint
const char *mqtt_topic = "#";  // MQTT topic
const char *mqtt_username = "bblp";       // MQTT username for authenticatbion
const char *mqtt_password = "13003498";   // MQTT password for authentication
const int mqtt_port = 8883;               // MQTT port (TCP)

WiFiClientSecure espClient;
PubSubClient mqtt_client(espClient);

void connectToWiFi();

void connectToMQTTBroker();

void mqttCallback(char *topic, byte *payload, unsigned int length);

void setup() {
  Serial.begin(115200);
  connectToWiFi();
  mqtt_client.setServer(mqtt_broker, mqtt_port);
  mqtt_client.setCallback(mqttCallback);
  connectToMQTTBroker();
}

void connectToWiFi() {
  espClient.setInsecure();
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected to the WiFi network");
}

void connectToMQTTBroker() {
  while (!mqtt_client.connected()) {
    String client_id = "esp8266-client-" + String(WiFi.macAddress());
    Serial.printf("Connecting to MQTT Broker as %s.....\n", client_id.c_str());
    if (mqtt_client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {
      Serial.println("Connected to MQTT broker");
      Serial.printf("connectToMQTTBroker connected: %d\n", mqtt_client.connected());
      Serial.printf("connectToMQTTBroker state: %d\n", mqtt_client.state());
      mqtt_client.subscribe("#");
      break;
    } else {
      Serial.print("Failed to connect to MQTT broker, rc=");
      Serial.print(mqtt_client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}

void mqttCallback(char *topic, byte *payload, unsigned int length) {
  Serial.print("Message received on topic: ");
  Serial.println(topic);
  Serial.print("Message:");
  for (unsigned int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();
  Serial.println("-----------------------");
}

void loop() {
  Serial.printf("Loop connected: %d\n", mqtt_client.connected());
  Serial.printf("Loop state: %d\n", mqtt_client.state());
  if (!mqtt_client.connected()) {
    connectToMQTTBroker();
  }
  mqtt_client.loop();
}