#define BLYNK_TEMPLATE_ID "TMPL384sM5WFb"
#define BLYNK_TEMPLATE_NAME "Home Automation"
#define BLYNK_AUTH_TOKEN "zAjwFMR4aEVdCsOOb6QofKISLNBhOYKE"
#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

char auth[]=BLYNK_AUTH_TOKEN;

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

BlynkTimer timer;

#define button1_pin 25
#define button2_pin 33
#define button3_pin 32
#define button4_pin 35

#define relay1_pin 13
#define relay2_pin 14
#define relay3_pin 27
#define relay4_pin 26

int relay1_state =0;
int relay2_state =0;
int relay3_state =0;
int relay4_state =0;

#define button1_vpin V1
#define button2_vpin V2
#define button3_vpin V3
#define button4_vpin V4

BLYNK_CONNECTED()
{
  Blynk.syncVirtual(button1_vpin);
  Blynk.syncVirtual(button2_vpin);
  Blynk.syncVirtual(button3_vpin);
  Blynk.syncVirtual(button4_vpin);
}

BLYNK_WRITE(button1_vpin)
{
  relay1_state=param.asInt();
  digitalWrite(relay1_pin,relay1_state);
}

BLYNK_WRITE(button2_vpin)
{
  relay2_state=param.asInt();
  digitalWrite(relay2_pin,relay2_state);
}

BLYNK_WRITE(button3_vpin)
{
  relay3_state=param.asInt();
  digitalWrite(relay3_pin,relay3_state);
}

BLYNK_WRITE(button4_vpin)
{
  relay4_state=param.asInt();
  digitalWrite(relay4_pin,relay4_state);
}

void setup()
{
  Serial.begin(115200);
  pinMode(button1_pin, INPUT_PULLUP);
  pinMode(button2_pin, INPUT_PULLUP);
  pinMode(button3_pin, INPUT_PULLUP);
  pinMode(button4_pin, INPUT_PULLUP);

  pinMode(relay1_pin, OUTPUT);
  pinMode(relay2_pin, OUTPUT);
  pinMode(relay3_pin, OUTPUT);
  pinMode(relay4_pin, OUTPUT);

  digitalWrite(relay1_pin, HIGH);
  digitalWrite(relay2_pin, HIGH);
  digitalWrite(relay3_pin, HIGH);
  digitalWrite(relay4_pin, HIGH);

  Blynk.begin(auth,ssid,pass);
}

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

void listen_push_button()
{
  if(digitalRead(button1_pin==LOW))
  {
    delay(200);
    control_relay(1);
    Blynk.virtualWrite(button1_vpin, relay1_state);
  }

  else if(digitalRead(button2_pin==LOW))
  {
    delay(200);
    control_relay(2);
    Blynk.virtualWrite(button2_vpin, relay2_state);
  }

  else if(digitalRead(button3_pin==LOW))
  {
    delay(200);
    control_relay(3);
    Blynk.virtualWrite(button3_vpin, relay3_state);
  }

  else if(digitalRead(button4_pin==LOW))
  {
    delay(200);
    control_relay(4);
    Blynk.virtualWrite(button4_vpin, relay4_state);
  }
}

void control_relay(int relay)
{
  if(relay==1)
  {
    relay1_state =!relay1_state;
    digitalWrite(relay1_pin,relay1_state);
    Serial.print("Relay1 state");
    Serial.println(relay1_state);
    delay(50);
  }

  else if(relay==2)
  {
    relay2_state =!relay2_state;
    digitalWrite(relay2_pin,relay2_state);
    Serial.print("Relay2 state");
    Serial.println(relay2_state);
    delay(50);
  }

  else if(relay==3)
  {
    relay3_state =!relay3_state;
    digitalWrite(relay3_pin,relay3_state);
    Serial.print("Relay3 state");
    Serial.println(relay3_state);
    delay(50);
  }

  else if(relay==4)
  {
    relay4_state =!relay4_state;
    digitalWrite(relay4_pin,relay4_state);
    Serial.print("Relay4 state");
    Serial.println(relay4_state);
    delay(50);
  }

}