#define BLYNK_TEMPLATE_ID "TMPL2xp4lng0I"
#define BLYNK_TEMPLATE_NAME "Smart Home Automation Project"
#define BLYNK_AUTH_TOKEN "20jjT3QyUytw-CW8JkRxYb3aJlLx-AI4"



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


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

DHTesp dht;

char auth[] = BLYNK_AUTH_TOKEN;

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

BlynkTimer timer;


#define DHTPIN 15
#define LED_PIN 21
#define button1_pin 26
#define button2_pin 25
#define button3_pin 33
//#define button4_pin 32

#define relay1_pin 13
#define relay2_pin 12
#define relay3_pin 14
//#define relay4_pin 27

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


//Change the virtual pins according the rooms
#define button1_vpin    V1
#define button2_vpin    V2
#define button3_vpin    V3 
//#define button4_vpin    V4

//------------------------------------------------------------------------------
// This function is called every time the device is connected to the Blynk.Cloud
// Request the latest state from the server
BLYNK_CONNECTED() {
  Blynk.syncVirtual(button1_vpin);
  Blynk.syncVirtual(button2_vpin);
  Blynk.syncVirtual(button3_vpin);
  //Blynk.syncVirtual(button4_vpin);
}

//--------------------------------------------------------------------------
// 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(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()
{
  // Debug console
  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);
  //--------------------------------------------------------------------
  //During Starting all Relays should TURN OFF
  digitalWrite(relay1_pin, HIGH);
  digitalWrite(relay2_pin, HIGH);
  digitalWrite(relay3_pin, HIGH);
  //digitalWrite(relay4_pin, HIGH);
  //--------------------------------------------------------------------
  Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk.cloud", 80);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);
  //--------------------------------------------------------------------
  //Blynk.virtualWrite(button1_vpin, relay1_state);
  //Blynk.virtualWrite(button2_vpin, relay2_state);
  //Blynk.virtualWrite(button3_vpin, relay3_state);
  //Blynk.virtualWrite(button4_vpin, relay4_state);
  //--------------------------------------------------------------------

  pinMode(LED_PIN, OUTPUT);
 // Serial.begin(115200);
  dht.setup(DHTPIN, DHTesp::DHT22); // Initialize DHT sensor
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(2000L, sendDHTData); // Send DHT data every 2 seconds
} 


void loop()
{
  Blynk.run();
  timer.run();
  // You can inject your own code or combine it with other sketches.
  // Check other examples on how to communicate with Blynk. Remember
  // to avoid delay() function!
  
  listen_push_buttons();
}

//MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
void listen_push_buttons(){
    //--------------------------------------------------------------------------
    if(digitalRead(button1_pin) == LOW){
      delay(200);
      control_relay(1);
      Blynk.virtualWrite(button1_vpin, relay1_state); //update button state
    }
    //--------------------------------------------------------------------------
    else if (digitalRead(button2_pin) == LOW){
      delay(200);
      control_relay(2);
      Blynk.virtualWrite(button2_vpin, relay2_state); //update button state
    }
    //--------------------------------------------------------------------------
    else if (digitalRead(button3_pin) == LOW){
      delay(200);
      control_relay(3);
      Blynk.virtualWrite(button3_vpin, relay3_state); //update button state
    }
    //--------------------------------------------------------------------------
    //else if (digitalRead(button4_pin) == LOW){
      //delay(200);
      //control_relay(4);
     // Blynk.virtualWrite(button4_vpin, relay4_state); //update button state
    //}
    //--------------------------------------------------------------------------
}
//MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM




//MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM

void sendDHTData() {
  float t = dht.getTemperature();
  float h = dht.getHumidity();
  
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Blynk.virtualWrite(V4, t);
  Blynk.virtualWrite(V0, h);

  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print("%\t");
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.println(" °C");
}


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);
    delay(50);
  }
  //------------------------------------------------
  else if(relay == 3){
    relay3_state = !relay3_state;
    digitalWrite(relay3_pin, relay3_state);
    delay(50);
  }
  //------------------------------------------------
  //else if(relay == 4){
   // relay4_state = !relay4_state;
    //digitalWrite(relay4_pin, relay4_state);
   // delay(50);
 // }
  //------------------------------------------------
}
//MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM