// TUGAS AKHIR, ALARM KEBAKARAN SECARA OTOMATIS DAN MANUAL
// Ketika suhu di atas 50c maka alrm akan menyala
#include <WiFi.h>
#include <MQTT.h>
#include "DHT.h"

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

WiFiClient net;
MQTTClient client;

#define DHT22Pin 5
#define relayoff 12
#define relayon 14
#define ledRed 27
#define alarm 26

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

    if(topic == "labskite/iot/alarm"){  
    digitalWrite(ledRed, data.toInt());
    digitalWrite(alarm, data.toInt());
    }
    if(topic == "labskite/iot/alarmoff"){  
    digitalWrite(relayoff, data.toInt());
    }
    if(topic == "labskite/iot/alarmon"){  
    digitalWrite(relayon, data.toInt());
    }
  
}
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(" % ");

  client.publish("labskite/iot/dht/temp", String(temp), true, 1); // publish variabel temperatue ke topic labskite/iot/dht/temp dengan QoS 1
  client.publish("labskite/iot/dht/humi", String(hum), true, 1); // publish variabel humidity ke topic labskite/iot/dht/humi dengan QoS 1
 
 if (temp > 50) {
  digitalWrite(ledRed, HIGH);
  digitalWrite(alarm, HIGH);
  client.publish("labskite/iot/alarm","1",true,1);
}else{
  digitalWrite(ledRed, LOW);
  digitalWrite(alarm, LOW);
  client.publish("labskite/iot/alarm","0",true,1);
}
}

void setup() {
  Serial.begin(115200);
  pinMode(ledRed,OUTPUT); 
  pinMode(alarm,OUTPUT);
  pinMode(relayoff,OUTPUT);
  pinMode(relayon,OUTPUT);
  dht.begin();

  Serial.begin(9600);
  WiFi.begin(ssid, pass);
  client.begin("broker.emqx.io", net);
  client.onMessage(subscribeData); 
  connect();
}

void loop() {
  client.loop();
  // publish a message roughly every second.
 if (millis() - lastMillis > 1000) {
    lastMillis = millis();
    publish();
  }
  delay(10);
}