#include <WiFi.h>
#include <MQTT.h>
#include "DHT.h"

#define ledRed 26
#define ledYellow 27
#define ledGreen 14
#define dht22pin 5

const char ssid[] = "Wokwi-GUEST";
const char pass[] = "";

WiFiClient net;
MQTTClient client;
DHT dht(dht22pin, DHT22);

unsigned long lastMillis = 0;

void connect(){
  // Menghubungkan ke WiFi
  Serial.print("Cek WiFi");
  while(WiFi.status() != WL_CONNECTED){
    Serial.print(".");
    delay(1000);
  }
  Serial.println("");
  Serial.println("Sukses Terhubung ke WiFi");

  // Menghubungkan ke Broker
  Serial.print("Cek Broker");
  while(!client.connect("")){ // Client ID boleh dikosongkan
    Serial.print(".");
    delay(1000);
  }
  Serial.println("");
  Serial.println("Sukses Terhubung ke Server");
  
  client.subscribe("labskite/iot/#", 1); // subcribe dengan QoS 1
}

void reconnect(){
  Serial.println("Koneksi terputus. Menghubungkan ke broker");
  while(!client.connect("")){ //client ID tidak boleh sama
    Serial.print(".");
    delay(1000);
  }
  Serial.println("");
  Serial.println("Sukses Terhubung ke Server");

  client.subscribe("labskite/iot/#", 1); // subcribe dengan QoS 1
}
  

void subscribeData(String &topic, String &data){
  Serial.print("Topic: ");
  Serial.println(topic);
  Serial.print("Data: ");
  Serial.println(data);

  if(topic == "labskite/iot/led1"){  
    digitalWrite(ledRed, data.toInt());   //control led 1
     //client.publish("labskite/iot/led1/status", "ON", true, 1);
     }
  

  if(topic == "labskite/iot/led2"){
    digitalWrite(ledYellow, data.toInt());   //control led 2
    //client.publish("labskite/iot/led2/status", "ON",true, 1);
    }
  
  if(topic == "labskite/iot/led3"){
    digitalWrite(ledYellow, data.toInt());   //control led 2
    //client.publish("labskite/iot/led3/status", "ON",true, 1);
    }
  
  if(topic == "labskite/iot/onsemua"){
    digitalWrite(ledRed, HIGH);
    //client.publish("labskite/iot/led1/status", "ON", true, 1);
    digitalWrite(ledYellow, HIGH);
    //client.publish("labskite/iot/led2/status", "ON", true, 1);
    digitalWrite(ledGreen, HIGH);
    //client.publish("labskite/iot/led3/status", "ON", true, 1);
    }

   if(topic == "labskite/iot/offsemua"){
    digitalWrite(ledRed, LOW);
    //client.publish("labskite/iot/led1/status", "OFF", true, 1);
    digitalWrite(ledYellow, LOW );
    //client.publish("labskite/iot/led2/status", "OFF", true, 1);
    digitalWrite(ledGreen, LOW);
    //client.publish("labskite/iot/led3/status", "OFF", true, 1);
    }
}  


void publish(){
  float hum = dht.readHumidity();
  float temp = dht.readTemperature();
  Serial.print("Temperature: ");
  Serial.print(temp);
  Serial.print("  C ");

  Serial.print("Humidity: ");
  Serial.print(hum);
  Serial.println("  % ");

  
  if (temp == 0){
      digitalWrite(ledRed, LOW);
      digitalWrite(ledYellow, LOW);
      digitalWrite(ledGreen, LOW);
    }
    else if  (temp < 28){
      digitalWrite(ledRed, LOW);
      digitalWrite(ledYellow, LOW);
      digitalWrite(ledGreen, LOW);
      //client.publish("labskite/iot/led1", "OFF", true, 1);
      //client.publish("labskite/iot/led2", "OFF", true, 1);
      //client.publish("labskite/iot/led3", "OFF", true, 1);
    }
    else if ((temp >= 28) && (temp <= 45)){
      digitalWrite(ledRed, LOW);
      digitalWrite(ledYellow, LOW);
      digitalWrite(ledGreen, HIGH);
      //client.publish("labskite/iot/led1", "OFF", true, 1);
      //client.publish("labskite/iot/led2", "OFF", true, 1);
      //client.publish("labskite/iot/led3", "ON", true, 1);
    }
    else if ((temp > 45) && (temp <= 75)) {
      digitalWrite(ledRed, LOW);
      digitalWrite(ledYellow, HIGH);
      digitalWrite(ledGreen, LOW);
      //client.publish("labskite/iot/led1", "OFF", true, 1);
      //client.publish("labskite/iot/led2", "ON", true, 1);
      //client.publish("labskite/iot/led3", "OFF", true, 1);
    }

    else if ((temp > 75) && (hum > 75)) {
      digitalWrite(ledRed, HIGH);
      digitalWrite(ledYellow, LOW);
      digitalWrite(ledGreen, LOW);
      //client.publish("labskite/iot/led1", "ON", true, 1);
      //client.publish("labskite/iot/led2", "OFF", true, 1);
      //client.publish("labskite/iot/led3", "OFF", true, 1);
    }

    client.publish("labskite/iot/dht/temp", String(temp), true, 1); // publish variabel pot ke topic labskite/iot/pot1 dengan QoS 1
    client.publish("labskite/iot/dht/hum", String(hum), true, 1); // publish variabel pot ke topic labskite/iot/pot1 dengan QoS 1
}

void setup() {
  
  pinMode(ledRed,OUTPUT); 
  pinMode(ledYellow,OUTPUT);
  pinMode(ledGreen,OUTPUT);
  
  dht.begin();
  Serial.begin(9600);
  WiFi.begin(ssid, pass);

  client.begin("broker.emqx.io", net);
  client.onMessage(subscribeData); 
  connect();
}

void loop() {
  if (!client.connected()){
    reconnect();
  }
  client.loop();
  // publish a message roughly every second.
 if (millis() - lastMillis > 1000) {
    lastMillis = millis();
    publish();
 }
    
  delay(100);
}