#define BLYNK_TEMPLATE_ID "TMPL6p6NnxZhn"
#define BLYNK_TEMPLATE_NAME "tot2"
#define BLYNK_AUTH_TOKEN "UkQP6WaXZtOF4Xkj3n04dJx0befnYyZr"
#define BLYNK_PRINT Serial

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

const int DHT_PIN = 15;
const int relay_PIN = 2;
const int gas_PIN = 25;     
const int LDR_PIN = 32;
const float GAMMA = 0.7;
const float RL10 = 50;

DHTesp dhtSensor;
int suhu;
int kelembaban;
float gas;

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

BlynkTimer timer;

void myTimerEvent(){
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  suhu=data.temperature;
  kelembaban=data.humidity;
  Blynk.virtualWrite(V0, suhu);
  Blynk.virtualWrite(V1, kelembaban);
  Serial.println("Temperature : " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  //Serial.println("---");
  
  int mq2Value = analogRead(gas_PIN);
  Serial.print("Gas sensor value: ");	Serial.print(mq2Value);
  //Blynk.virtualWrite(V2, mq2Value); 
  if (mq2Value<3000) {
    Blynk.virtualWrite(V2, "SAFE");
    Serial.println(" > Smoke: SAFE!");
	} else {
    Blynk.virtualWrite(V2, "DETECTED!");
    Serial.println(" > Smoke: DETECTED!");
    tone(12,200);
    delay(1000);
	}

  // int mq2Value = digitalRead(gas_PIN);
  // Serial.print("Digital Gas Sensor Value: "); Serial.print(mq2Value);
  // if (mq2Value==HIGH) {
  //   Blynk.virtualWrite(V5, "SAFE");
	// 	Serial.println("  |  Smoke: -");
	// } else {
  //   Blynk.virtualWrite(V5, "DETECTED");
	// 	Serial.println("  |  Smoke: Detected!");
	// }

  int nilaiADC = analogRead(LDR_PIN);
  float voltage = nilaiADC * 5/4095.0;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  Blynk.virtualWrite(V6, lux); 
  Serial.print("Intensitas : " + String(lux) + " lux");
  if(lux>50){
    Blynk.virtualWrite(V6, "LIGHT!");
    Serial.println(" > LIGHT!");
  }else {
    Blynk.virtualWrite(V6, "DARK");
    Serial.println(" > DARK");
  }
}
void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(relay_PIN, OUTPUT);
  digitalWrite(relay_PIN, LOW); // Relay OFF

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  timer.setInterval(1000L, myTimerEvent);
  Serial.println("Sistem Monitoring Ruangan Kelas - Berbasis IoT");

}

void loop() {
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
  //sensorMQ2();
}

void sensorDHT22(){

}

void buzzerOut(){

}

void sensorMQ2(){
  int gasValue = analogRead(gas_PIN);
  Blynk.virtualWrite(V2, gas);
  Serial.println("Gas (PPM): " + String(gas_PIN) + "PPM");
  Serial.println("---");
  delay(1000); // Jeda 1 detik antar pembacaan
}
void sensorLDR(){

}

void tampilanOLED(){

}

void relayOut(){

}

BLYNK_WRITE(V4) {
  int relayState = param.asInt(); // 1 = ON, 0 = OFF
  digitalWrite(relay_PIN, relayState);
}