#include <WiFi.h>

#include <MQTT.h>

#include <DHT.h>

String ssid = "Wokwi-GUEST";

String pass = "";

WiFiClient net;

MQTTClient client;

DHT dht(21,DHT22);

void konekWifi(){

  Serial.println("Coba Konek ke WiFi...");

  WiFi.begin(ssid,pass);

  while (WiFi.status() != WL_CONNECTED){

    Serial.print(".");

    delay(50);

  }

  Serial.println("\nWiFi Terhubung");

}

void konekMqtt(){

  while (!client.connected()){

    Serial.println("Coba konek ke MQTT...");

    if (client.connect("Bebas-Aja")){

      Serial.println("Terhubung ke MQTT");

      client.publish("wokwi/cek/koneksi", "online");

      client.subscribe("wokwi/cek/led");

    }

    else {

      Serial.println("MQTT gagal terhubung");

      Serial.println("Sedang konek ulang, sabar!");

    }

  }

}

void pesan(String topic, String payload){

  if (payload == "1"){

    digitalWrite(13, HIGH);

    client.publish("wokwi/cek/statusPompa", "Pompa ON");

  }

  else {

    digitalWrite(13, LOW);

    client.publish("wokwi/cek/statusPompa", "Pompa OFF");

  }

}

void setup() {

  Serial.begin(115200);

  pinMode(33, INPUT);

  pinMode (13, OUTPUT);

  digitalWrite(13, LOW);

  konekWifi();

  client.begin("mqtt-dashboard.com", net);

  client.onMessage(pesan);

  dht.begin();

  client.setWill("wokwi/cek/koneksi", "offline", true, 1);

}

void loop() {

 if (!client.connected()){

  konekMqtt();

 }

 client.loop();

 float t = dht.readTemperature();

 float h = dht.readHumidity();

 String suhu = String(t,1);

 String kel = String(h,1);

 int baca = analogRead(33);

 int s = map(baca, 0 , 4096 , 0, 100);

 Serial.println("nilai sensor tanah: "+ (String) s);

 Serial.println("suhu udara: "+ suhu);

 Serial.println("kelembapan udara: "+ kel);

 client.publish("wokwi/cek/suhu", suhu.c_str());

 client.publish("wokwi/cek/kelembapan", kel.c_str());

 if (s > 50){

    client.publish("wokwi/cek/kelembapanTanah", "Tanah Basah");

 }

 else {

  client.publish("wokwi/cek/kelembapanTanah", "Tanah Kering");

 }

 delay (2000);

}