#define BLYNK_TEMPLATE_ID "TMPL3so9Y7CXP"
#define BLYNK_TEMPLATE_NAME "LCD BLYNK"
#define BLYNK_AUTH_TOKEN "xBo9Q12JAN0PDtHvqa8jcLIX_qByEf3W"

#define BLYNK_PRINT Serial

#define BlynkTemp V0
#define BlynkHumi V1
#define BlynkTerminal V2
int dhtPin = 21;


#define RED_LED 4
#define BLUE_LED 5

#define LCD_ADDRESS 0x3F

#define LCD_ROWS 4
#define LCD_COLUMNS 20
#define SCROLL_DELAY 150
#define BACKLIGHT 255




#include <Wire.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <DHTesp.h>
#include <LiquidCrystal_I2C.h>

int lcdColumns = 16;
int lcdRows = 2;

LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  

WidgetTerminal Terminal(V2);
DHTesp mydht;
BlynkTimer mytimer;

char auth[]="_g2H3-EGHDdLk-hKURXwZHetftkHT2Iw";
char ssid[]="Wokwi-GUEST";
char pass[]="";

void setup() {
  
  lcd.init();
                       
  lcd.backlight();

  
  lcd.setCursor(0, 0);


  mydht.setup(dhtPin,DHTesp::DHT22);
  mytimer.setInterval(1000L,readDHT);
  
  Blynk.begin(auth,ssid,pass,"blynk.cloud",80);
 
}
void readDHT()
{
  TempAndHumidity values = mydht.getTempAndHumidity();
  Blynk.virtualWrite(BlynkTemp,values.temperature);
  Blynk.virtualWrite(BlynkHumi,values.humidity);

}
BLYNK_WRITE(BlynkTerminal)
{
  String TerminalCommand=param.asStr();
  if(TerminalCommand=="Red On")
  {
    digitalWrite(RED_LED,HIGH);
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();
  }
  else if(TerminalCommand=="Red Off")
  {
    digitalWrite(RED_LED,LOW);
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();
  }
  else if(TerminalCommand=="Blue On")
  {
    digitalWrite(BLUE_LED,HIGH);
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();
  }
  else if(TerminalCommand=="Blue Off")
  {
    digitalWrite(BLUE_LED,LOW);
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();
  }
  else if(TerminalCommand=="Red Blink")
  {
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();
    while(TerminalCommand!="Red Stop Blink")
    {
      digitalWrite(RED_LED,LOW);
      delay(1000);
      digitalWrite(RED_LED,HIGH);
      delay(1000);
      lcd.print(TerminalCommand);
      delay(5000);
      lcd.clear();

    }
    

  }
  else if(TerminalCommand=="Red Stop Blink")
  {
      digitalWrite(RED_LED,LOW);
      lcd.print(TerminalCommand);
      delay(5000);
      lcd.clear();
  }
  else if(TerminalCommand=="Blue Blink")
  {
    lcd.print(TerminalCommand);
    delay(5000);
    
    while(TerminalCommand!="Blue Stop Blink")
    {
      digitalWrite(BLUE_LED,LOW);
      delay(1000);
      digitalWrite(BLUE_LED,HIGH);
      delay(1000);
      lcd.print(TerminalCommand);
      delay(5000);
      lcd.clear();

    }
    

  }
  else if(TerminalCommand=="Blue Stop Blink")
  {
      digitalWrite(BLUE_LED,LOW);
      lcd.print(TerminalCommand);
      delay(5000);
      
  }
  else if(TerminalCommand=="Temp")
  {
    TempAndHumidity values = mydht.getTempAndHumidity();
    Terminal.println(values.temperature);
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();

  }
  else if(TerminalCommand=="Humi")
  {
    TempAndHumidity values = mydht.getTempAndHumidity();
    Terminal.println(values.humidity);
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();

  }
  else if(TerminalCommand=="Clear")
  {
    Terminal.clear();
    lcd.print(TerminalCommand);
    delay(1000);
    lcd.clear();
  }
  else{
    Terminal.println("Invalid Command");
    lcd.print(TerminalCommand);
    delay(5000);
    lcd.clear();
  }


}


void loop() {
  mytimer.run();
  Blynk.run();

}