#define BLYNK_TEMPLATE_ID "TMPL63PasRq3g"
#define BLYNK_TEMPLATE_NAME "Smart Home"
#define BLYNK_AUTH_TOKEN "qLfIBqz1aZroUonegtKGpIF3EIu4vQyK"

// Comment this out to disable prints and save space
#define BLYNK_PRINT Serial


#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

#define DHTPIN 26
#define DHTTYPE DHT22
DHT dht(DHTPIN,DHTTYPE);

char auth[] = BLYNK_AUTH_TOKEN;

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;

#define buzzer 23
#define button_blue 15
#define button_red 4
#define button_fan 18
#define button_door 19

#define Lamp 25
#define LampM 5
#define Fan 2
#define Door 23

int blue_state  = 0;
int red_state   = 0;
int fan_state   = 0;
int door_state  = 0;


//Change the virtual pins according the rooms
#define button_vblue     V0
#define button_vred      V1
#define button_vfan      V2 
#define button_vdoor     V3


BLYNK_CONNECTED(){
  Blynk.syncVirtual(button_vblue);
  Blynk.syncVirtual(button_vred);
  Blynk.syncVirtual(button_vfan);
  Blynk.syncVirtual(button_vdoor);
  
}

// This function is called every time the Virtual Pin state change
//i.e when web push switch from Blynk App or Web Dashboard
BLYNK_WRITE(button_vblue) {
  blue_state = param.asInt();
  digitalWrite(Lamp, blue_state);
}

BLYNK_WRITE(button_vred) {
  red_state = param.asInt();
  digitalWrite(LampM, red_state);
}

BLYNK_WRITE(button_vfan) {
  fan_state = param.asInt();
  digitalWrite(Fan, fan_state);
}

BLYNK_WRITE(button_vdoor) {
  door_state = param.asInt();
  digitalWrite(Door, door_state);
}





void setup() {
  // Debug Console
  Serial.begin(115200);
  dht.begin();
  timer.setInterval(2500L, sendSensor);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Connecting to ");
  lcd.setCursor(0, 1);
  lcd.print("WiFi . . . ");
  
  
  pinMode(button_blue,  INPUT_PULLUP);
  pinMode(button_red,   INPUT_PULLUP);
  pinMode(button_fan,   INPUT_PULLUP);
  pinMode(button_door,  INPUT_PULLUP);

  pinMode(buzzer,     OUTPUT);  
  pinMode(Lamp,  OUTPUT);
  pinMode(LampM, OUTPUT);
  pinMode(Fan,        OUTPUT);
  pinMode(Door,       OUTPUT);

  //During Starting all Relays should TURN OFF
  digitalWrite(buzzer,     HIGH);
  digitalWrite(Lamp,  HIGH);
  digitalWrite(LampM, HIGH);
  digitalWrite(Fan,        HIGH);
  digitalWrite(Door,       HIGH);

  
  Blynk.begin(auth, ssid, pass);


  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("      WiFi ");
  lcd.setCursor(0, 1);
  lcd.print("   Connected");
  delay(3000);

  tone(buzzer, 20 );
  delay(500);
  noTone(buzzer);
  
  lcd.clear();


}






void loop() {
  Blynk.run();
  timer.run();
  listen_push_buttons();
}



void sendSensor(){
float t = dht.readTemperature();

 if ((t >= 30)){
  digitalWrite(Fan, HIGH);

}

  else if ((t < 30) ){
  digitalWrite(Fan, LOW);
  
}

 lcd.setCursor(0,0);
  lcd.print("Temperature");
  lcd.setCursor(0,1);
  lcd.print("= ");
  lcd.print(t);
  lcd.print ("  *C");
  delay(1000);
  lcd.clear();
  

#define t   V4
Blynk.syncVirtual(t);

}

 


void listen_push_buttons(){
  if(digitalRead(button_blue) == LOW){
      delay(200);
      control_relay(1);
      Blynk.virtualWrite(button_vblue, blue_state); //update button state
    }

  else if(digitalRead(button_red) == LOW){
      delay(200);
      control_relay(2);
      Blynk.virtualWrite(button_vred, red_state); //update button state
    }
  else if(digitalRead(button_fan) == LOW){
      delay(200);
      control_relay(3);
      Blynk.virtualWrite(button_vfan, fan_state); //update button state
    }
  else if(digitalRead(button_door) == LOW){
     tone(buzzer, 30);
     delay(1000);
     noTone(buzzer);
      delay(200);
      control_relay(4);
      Blynk.virtualWrite(button_vdoor, door_state); //update button state
    
    }
}



void control_relay(int relay)
{
  if(relay == 1){
    lcd.clear();
    blue_state = !blue_state;
    digitalWrite(Lamp, blue_state);
    //Serial.print("Kondisi = ");
    //Serial.println(blue_state);
    lcd.setCursor (0,0);
    lcd.println ("   FRIDGE");
    lcd.setCursor(0, 1);
    if(blue_state == HIGH){
    lcd.println("      ON");
    }
    else if(blue_state == LOW){
    lcd.println("      OFF");
    }
    delay(50);
    
  }
    

  else if(relay == 2){
    lcd.clear();
    red_state = !red_state;
    digitalWrite(LampM, red_state);
    //Serial.print("Kondisi = ");
    //Serial.println(red_state);
    lcd.setCursor (0,0);
    lcd.println ("   AIR CONDITIONER");
    lcd.setCursor(0, 1);
    if(red_state == HIGH){
    lcd.println("      ON");
    }
    else if(red_state == LOW){
    lcd.println("      OFF");
    }
    delay(50);
  }
    

  else if(relay == 3){
    lcd.clear();
    fan_state = !fan_state;
    digitalWrite(Fan, fan_state);
    //Serial.print("Kondisi = ");
    //Serial.println(fan_state);
    lcd.setCursor (0,0);
    lcd.println ("      OVEN");
    lcd.setCursor(0, 1);
    if(fan_state == HIGH){
    lcd.println("      ON");
    }
    else if(fan_state == LOW){
    lcd.println("      OFF");
    }
    delay(50);
    
  }

   

  else if(relay == 4){
    lcd.clear();
    door_state = !door_state;
    digitalWrite(Door, door_state);
    //Serial.print("Kondisi = ");
    //Serial.println(door_state);
    lcd.setCursor (0,0);
    lcd.println ("      WASHING MACHINE");
    lcd.setCursor(0, 1);
    if(door_state == HIGH){
    lcd.println("      ON");
    }
    else if(door_state == LOW){
    lcd.println("      OFF");
    }
    delay(50);


  }
    

}