#define BLYNK_TEMPLATE_ID "TMPL3JYdROCT3"
#define BLYNK_TEMPLATE_NAME "Smart Building using IOT"
#define BLYNK_AUTH_TOKEN "A-lsZ09SxSzYEcbJy830kd8pfZZgl9c9"

#define  BLYNK_PRINT Serial

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

char auth[] = BLYNK_AUTH_TOKEN;

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

BlynkTimer timer;
DHTesp dhtSensor;

const int dev1 = 23;
const int dev2 = 22;
const int dev3 = 21;
const int dev4 = 19;
const int dht = 15;
const int button1 = 2;

int relay_state_dev1 = 0;
int relay_state_dev2 = 0;
int relay_state_dev3 = 0;
int relay_state_dev4 = 0;

#define vpin1 V1
#define vpin2 V2
#define vpin3 V3
#define vpin4 V4
#define vpin5 V5

BLYNK_CONNECTED() {
  Blynk.syncVirtual(vpin1);
  Blynk.syncVirtual(vpin2);
  Blynk.syncVirtual(vpin3);
  Blynk.syncVirtual(vpin4);
  Blynk.syncVirtual(vpin5);
}

BLYNK_WRITE(vpin1) {
  relay_state_dev1 = param.asInt();
  digitalWrite(dev1, relay_state_dev1);
}

BLYNK_WRITE(vpin2) {
  relay_state_dev2 = param.asInt();
  digitalWrite(dev2, relay_state_dev2);
}

BLYNK_WRITE(vpin3) {
  relay_state_dev3 = param.asInt();
  digitalWrite(dev3, relay_state_dev3);
}

BLYNK_WRITE(vpin4) {
  relay_state_dev4 = param.asInt();
  digitalWrite(dev4, relay_state_dev4);
}

void send_dht_val() {
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float temp = data.temperature;

  Blynk.virtualWrite(V5,temp);
}

void setup() {
  pinMode(dev1, OUTPUT);
  pinMode(dev2, OUTPUT);
  pinMode(dev3, OUTPUT);
  pinMode(dev4, OUTPUT);

  //for push buttons
  pinMode(button1, INPUT_PULLUP);

  //for DHT22 sensor
  dhtSensor.setup(dht, DHTesp::DHT22);

//To start Serial Print
  Serial.begin(115200);

//This is for the starting check for the led

  digitalWrite(dev1, HIGH);
  digitalWrite(dev2, HIGH);
  digitalWrite(dev3, HIGH);
  digitalWrite(dev4, HIGH);
  delay(1000);
  digitalWrite(dev1, LOW);
  digitalWrite(dev2, LOW);
  digitalWrite(dev3, LOW);
  digitalWrite(dev4, LOW);
  delay(1000);

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

void button_status() {
  //serial.println(digitalRead(button1));
  if(digitalRead(button1) == LOW) {
    delay(500);
    controlButton(1);
    Blynk.virtualWrite(vpin1, relay_state_dev1);
  }
}

void controlButton(int relayIn) {
  if(relayIn == 1) {
    relay_state_dev1 = !relay_state_dev1;
    digitalWrite(dev1, relay_state_dev1);
    delay(100);
  }
}

void loop() {
  Blynk.run();
  timer.run();
  button_status();
  timer.setInterval(2000, send_dht_val);
}