#include <LiquidCrystal_I2C.h>
#include <FirebaseESP32.h>
#include <WiFi.h>
#include <WiFiClient.h>

LiquidCrystal_I2C lcd(0x27,22,21);

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASS ""

#define FIREBASE_HOST "https://project-ldr-11f71-default-rtdb.firebaseio.com"
#define FIREBASE_AUTH "NixHh35CJli1pBYKzbYSY2e8aSF3fPfwKoPQrk1F"

#define relaypin 12
#define Aopin 34
#define Dopin 14

FirebaseData firebaseData;

void setup(){
  Serial.begin(115200);
  pinMode(Dopin, INPUT);
  pinMode(relaypin, OUTPUT);
  lcd.init();
  lcd.backlight();
  WiFi.begin(WIFI_SSID, WIFI_PASS);
  while(WiFi.status() != WL_CONNECTED){
    delay(1000);
    Serial.println("Menghubungkan ke wifi..." );
  }
  Serial.println("Wifi Terhubung...");
  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
}

void loop(){
  int Aovalue = analogRead(Aopin);
  int Dovalue = digitalRead(Dopin);

  Aovalue = map(Aovalue, 4095, 0,1024,0);
  float valtase = Aovalue / 1024.*5;
  float R = 2000*valtase / (1-valtase/5);
  float kecerahan = pow(50 * 1e3 * pow(10, 0.7) / R , (1 / 0.7));
  kecerahan = round(kecerahan * 10) / 10.0;
  Serial.print("kecerahan = ");
  Serial.println(kecerahan);
  lcd.setCursor(0,0);
  lcd.print("kecerahan");
  lcd.print(kecerahan);
  Firebase.setFloat(firebaseData, "/kecerahan", kecerahan);

  if(Firebase.getBool(firebaseData, "/relayState")){
    bool relayState = firebaseData.boolData();
    if(kecerahan < 100){
      relayState = 1;
    } else {
      relayState = 0;
    }
    Firebase.setBool(firebaseData, "/relayState", relayState);
    digitalWrite(relaypin, relayState);
    if(relayState == 0 ){
      Serial.println("Lampu Mati");
      lcd.setCursor(0,1);
      lcd.print("Lampu Mati");
    }else{
      Serial.println("Lampu Hidup");
      lcd.setCursor(0,1);
      lcd.print("Lampu Hidup");
    }
    Serial.println("State: " + String(relayState));

  }else{
    Serial.println("Gagal Menerima Data Firebase...");
  }
  
  if(kecerahan < 100 && Firebase.getBool(firebaseData, "/relayState") == 0){
    //delay(1000);
    if(kecerahan < 100){
      digitalWrite(relaypin, 1);
      Serial.println("Lampu Hidup karena kecerahan rendah");
    }
  }
delay(1000);
}