#define BLYNK_TEMPLATE_ID "TMPL_BGP00-H"
#define BLYNK_TEMPLATE_NAME "SMART CURTAIN"
#define BLYNK_AUTH_TOKEN "3Qt7t4k_rDZb-_BNlwHYu3GaIibFq1Ex"

#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include<ESP32Servo.h>

int ldr = 26; 
//int relay = D1;  //connect with lamp
int servoPin = 5;
//int motorDir = D4;
int led = 27;

int ldrValue;
int selectMode;

Servo servo;

BlynkTimer timer;
WidgetLCD lcd(V5);   

char auth [] = BLYNK_AUTH_TOKEN;
char ssid [] = "Wokwi-GUEST";
char pass [] = "";

BLYNK_CONNECTED ()
{
  Blynk.syncVirtual(V0); 
  Blynk.syncVirtual(V1);
  Blynk.syncVirtual(V2);
  Blynk.syncVirtual(V3);
  
}

void setup() {
  // put your setup code here, to run once:

  Serial.begin(9600);
  Blynk.begin(auth,ssid,pass);  

  pinMode(led, OUTPUT);
  pinMode(ldr, INPUT);

  servo.attach(servoPin, 500, 2400);

  
  timer.setInterval(1000L, readLDR);
  lcd.clear();
  lcd.print(0,0, "                     ");
  lcd.print(0,1, "                     ");
}

BLYNK_WRITE (V0) // mode selection
{
  selectMode = param.asInt();
  if (selectMode == 0)  // auto mode 
  {
    Serial.println("Auto MODE IS ACTIVATED!");
    lcd.print(3,0, "             ");
    lcd.print(4,0, "AUTO MODE"); 
    lcd.print(0,1, "                   ");
    lcd.print(4,1, "ACTIVATED");
  }
  else if (selectMode == 1)  // manual mode 
  {
    Serial.println("MANUAL MODE IS ACTIVATED!");
    lcd.print(3,0, "             ");
    lcd.print(3,0, "MANUAL MODE"); 
    lcd.print(0,1, "                   ");
    lcd.print(4,1, "ACTIVATED");

   digitalWrite(led, LOW);

  }
}

BLYNK_WRITE (V2)  // lamp
{
  int buttonState = param.asInt ();
  if (buttonState == 1)
  {
    Serial.println("Lamp is ON!");
    digitalWrite(led, HIGH);

    lcd.print(2,1, "              ");
    lcd.print(5,1, "LAMP ON");
  }

  else if (buttonState == 0)
  {
    Serial.println("Lamp is OFF!");
    digitalWrite(led, LOW);

    lcd.print(5,1, "LAMP OFF");
  }
}

BLYNK_WRITE (V3) //curtain open
{
  int buttonState = param.asInt ();
  if (buttonState == 1)
  {
    Serial.println("Opening the curtain!");
    lcd.print(2,1, "               ");
    lcd.print(2,1, "CURTAIN OPEN");
    curtainOpen();
  }

  else if (buttonState == 0)
  {
    Serial.println("Stop opening the curtain!");

    lcd.print(2,1, "               ");
    lcd.print(2,1, "CURTAIN STOP");

    curtainStop();

  }
}

BLYNK_WRITE (V4) //curtain close
{
  int buttonState = param.asInt ();
  if (buttonState == 1)
  {
    Serial.println("Closing the curtain!");
    lcd.print(2,1, "               ");
    lcd.print(2,1, "CURTAIN CLOSE");
    curtainClose();
  }

  else if (buttonState == 0)
  {
    Serial.println("Stop Closing the curtain!");
    lcd.print(2,1, "               ");
    lcd.print(2,1, "CURTAIN STOP");
    curtainStop();
  }
}
void readLDR ()
{
  ldrValue = analogRead(ldr);
 // Serial.println(ldrValue);

  if (selectMode != 1)
  {
  if (ldrValue <400)    // increase the value if the sensor is too sensitive
    {
        digitalWrite(led, LOW);
        servo.write(180);
        
    }

    else 
    {
        digitalWrite(led, HIGH);
        servo.write(0);
    }
  }
}

void curtainOpen ()
{
    servo.write(180);
}

void curtainClose ()
{
    servo.write(90);
}

void curtainStop ()
{
    servo.write(0);
}

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