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

const char* ssid = "Wokwi -GUEST";
const char* password ="";

const char* mqtt_server = "test mosquitto.org";
const char* SUBTOPIC_LED = "/f55121039/led";

const int DHT_PIN = 13
const int LED_PIN = 2

DHTesp dht;
WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED){
    Serial.print(".");
    delay(500);
  }
  Serial.println("WiFi Connected");
  Serial.println(WiFi.SSID());
  Serial.println(WiFi.RSSI());
  Serial.println(WiFi.macAddress());
  Serial.println(WiFi.localIP());
  Serial.println(WiFi.gatewayIP());
  Serial.println(WiFi.dnsIP());
}

void reconnect(){
  while (! client.connected()){
    Serial.print("Attempting MOTT connection...");
    string clientId = "ESP32Client-";
    clientId += string(random(0xffff), HEX);
    if (client.connect(clientId.c_str())) {
      Serial.print("Connected");
      client.subscribe(SUBTOPIC_LED);
    }else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}

void callback(char *topic, byte *payload, unsigned int length){
  Serial.print("Receive Topic: ");
  Serial.print(topic);
  Serial.print("Payload: ");
  Serial.print((char *)payload);
  if(!strcmp(topic, SUBTOPIC_LED)) {
    if(!strncmp((char *)payload, "on", length)) {
      Serial.println("LED ON");
      digitalWrite(LED_PIN, HIGH);
    } else if (!strncmp((char *)payload, "of", length)){
      Serial.println("LED OF");
      digitalWrite(LED_PIN, LOW);
    }
  }
}
void setup() {
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  dht.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LED_PIN, OUTPUT);
}
void loop() {
 if (!client.connected()){
  reconnect();
 }
 client.loop();

 TempAndHumidity data = dht.getTempAndHumidity();

 string temp = string (data.temperature, 2);
 client.publish("/f55121039/suhu", temp.c_str());
 string hum = string(data.humidity, 1);
 client.publish("/f55121039/kelembapan", hum.c_str());

 Serial.print("Temperature: ");
 Serial.print(temp);
 Serial.print("Humidity: ");
 Serial.print(hum);
}