#if defined(ESP32)
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#endif 

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

#define heater 4
#define cooler 5

const int DHT_PIN = 15; 
DHTesp dht;
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "test.mosquitto.org";


WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;
float temp = 0;
float hum = 0;


void setup_wifi() {
 delay(10);
 Serial.println();
 Serial.print("Connecting to ");
 Serial.println(ssid);


 WiFi.mode(WIFI_STA);
 WiFi.begin(ssid, password);


 while (WiFi.status() != WL_CONNECTED) {
   delay(500);
   Serial.print(".");
 }


 randomSeed(micros());

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

void callback(String topic, byte* payload, unsigned int length) {
  String messageTemp;
  Serial.print("Message arrived on topic: ");
  Serial.print(topic);
  Serial.print(". Message: ");

  for(int i = 0 ; i < length; i++){
    Serial.print((char)payload[i]);
    messageTemp += (char)payload[i];
  }
  Serial.println();

  if(topic == "/inkubator/inkubator1/aktuator/heacool"){
    if(messageTemp == "panas"){
      digitalWrite(heater, LOW);
      digitalWrite(cooler, HIGH);
    }
    else if(messageTemp == "dingin"){
      digitalWrite(heater, HIGH);
      digitalWrite(cooler, LOW);
    }
  }

}

void reconnect() {
 while (!client.connected()) {
   Serial.print("Attempting MQTT connection...");
   String clientId = "ESP32Client-";
   clientId += String(random(0xffff), HEX);
   if (client.connect(clientId.c_str())) {
     Serial.println("Connected");
     client.subscribe("/inkubator/inkubator1/aktuator/heacool");
   } 
   else {
     Serial.print("failed, rc=");
     Serial.print(client.state());
     Serial.println(" try again in 2 seconds");
     delay(2000);
   }
  }
}

void setup() {
  pinMode(heater, OUTPUT);
  pinMode(cooler, OUTPUT);
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  dht.setup(DHT_PIN, DHTesp::DHT22);
}

void loop() {
 if (!client.connected()) {
   reconnect();
   
 }
 client.loop();


 unsigned long now = millis();
 if (now - lastMsg > 2000) {
    lastMsg = now;
    TempAndHumidity  data = dht.getTempAndHumidity();

    String temp = String(data.temperature, 2);
    client.publish("/inkubator/inkubator1/sensor/suhu", temp.c_str()); 
    String hum = String(data.humidity, 1);
    client.publish("/inkubator/inkubator1/sensor/kelembaban", hum.c_str()); 

    Serial.print("Temp: ");
    Serial.println(temp);
    Serial.print("Hum: ");
    Serial.println(hum);
  }


}