#include "DHTesp.h"
#include <LiquidCrystal_I2C.h>

#define ldrPin 2
const float gama = 0.7;
const float rl10 = 50;

const int DHT_PIN = 23;

DHTesp dhtSensor;
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");


  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  lcd.init();
  lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  // delay(10); // this speeds up the simulation
  int nilaiLDR = analogRead(ldrPin);
  nilaiLDR = map(nilaiLDR, 4095, 0, 1024, 0); //mengubah nilai pembacaan sensor LDR dari nilai ADC arduino menjadi nilai ADC ESP32
  float voltase = nilaiLDR / 1024.*5;
  float resistansi = 2000 * voltase / (1-voltase/5);
  float kecerahan = pow(rl10*1e3*pow(10,gama)/resistansi,(1/gama));
  Serial.print("Kecerahan = ");
  Serial.println(kecerahan);

  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  delay(2000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)

   lcd.setCursor(0, 0);
  lcd.print("Temp: " + String(data.temperature, 2) + " C");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 1);

delay(1000);
  lcd.clear();
  if ((20 <= data.temperature) && (data.temperature <= 24)
  && (30 <= data.humidity) && (data.humidity <= 50)
  && (300 <= kecerahan) && (kecerahan <= 500)) {
    lcd.print("OPTIMAL");
  } 
  
// JIKA SUHU BERADA DIANTARA 18-20 ATAU 24-26, SERTA KELEMBAPAN DIANTARA 20-30 ATAU 50-60, DAN KECERAHAN
// DIANTARA 200-300 ATAU 500-700 MAKA OUTPUTNYA CUKUP BAIK
    else if
  (((18 <= data.temperature) && (data.temperature < 20)
  || (24 < data.temperature) && (data.temperature <= 26))

  && ((20 <= data.humidity) && (data.humidity < 30)
  || (50 < data.humidity) && (data.humidity <= 60))

  && ((200 <= kecerahan) && (kecerahan < 300)
  || (500 < kecerahan) && (kecerahan <= 700))) {
    lcd.print("CUKUP BAIK");
  }

    else {
    lcd.print("SANGAT TIDAK BAIK");
  }
}