#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6qJlkEE1u"
#define BLYNK_TEMPLATE_NAME "Sensor Lampu Otomatis"
#define BLYNK_AUTH_TOKEN "3XLoL2IgOqRFmG0jMPNVF49WBEl6Jz09"


//Include Library Arduino
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

int led = 16;
int ldrpin = 34;
float resistance;  // Deklarasikan variabel resistance
float voltage;     // Deklarasikan variabel voltage
int lampStatus = 0; // Variabel untuk menyimpan status lampu (0 = off, 1 = on)

LiquidCrystal_I2C lcd(0x27, 20, 4);

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

// PWM Settings for LED
int ledBrightness = 0;  // Brightness value (0-255)

void setup() {
  pinMode(led, OUTPUT);
  pinMode(ldrpin, INPUT);
  Serial.begin(9600);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(7, 0);
  lcd.print("RAIHAN");
  lcd.setCursor(2, 1);
  lcd.print("RAMANDHA SAPUTRA");
  lcd.setCursor(4, 3);
  lcd.print("41422110039");
  delay(3000);
  lcd.clear();
  
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  timer.setInterval(1000L, sendData);
}

void loop() {
  Blynk.run();
  timer.run();
}

void sendData() {
  // These constants should match the photoresistor's "gamma" and "rl10" attributes
  const float GAMMA = 0.7;
  const float RL10 = 50;

  int analogValue = analogRead(ldrpin);

  Serial.print("Analog Value	: ");
  Serial.println(analogValue);

  voltage = analogValue * (3.3 / 4096);  // Hitung nilai tegangan
  resistance = 2000 * voltage / (1 - voltage / 3.3);  // Sesuaikan ini dengan rumus yang benar

  int light = analogRead(ldrpin);
  float voltage = light / 4096. * 5;
  float resistance = 2000 * voltage / (1- voltage /5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

  // Tampilkan nilai lux pada Serial Monitor
  Serial.print("Lux		: ");
  Serial.println(lux, 2); // Tampilkan nilai lux dengan dua desimal

  lcd.setCursor(4, 0);
  lcd.print("STATUS LAMPU");

  // Variabel untuk status teks (On/Off)
  String textStatus;
  String textStatus1;

  //Lampu Menyala 50%
  if (analogValue >= 1500 && analogValue < 3092) {
    int nyala = map(light, 0, 4096, 0,128);
    ledBrightness = 128;  // 50% brightness
    analogWrite(led, nyala);  // Atur kecerahan LED
    lcd.setCursor(4, 2);
    lcd.print("Cahaya Redup");
    lcd.setCursor(1, 3);
    lcd.print("Lampu menyala: 50%");
    delay(2000);
    lcd.clear();

    Serial.print("Status Cahaya   : ");
    Serial.println("Cahaya Redup");

    lampStatus = 50;
    Serial.print("Lamp Status	: ");
    Serial.print(lampStatus);
    Serial.println("%");

    textStatus1 = "Cahaya Redup"; //Status 
    textStatus = "On";  // Status teks untuk lampu 50% menyala
    Serial.print("Status Lampu	: ");
    Serial.println(textStatus);
    Serial.print("-----------------------------");
    Serial.println();

    } 
  
  // Kondisi lampu menyala 100%
  else if (analogValue >= 3092) 
  {
    int nyala = map(light, 0, 4096, 0,255);
    ledBrightness = 255;  // 100% brightness
    analogWrite(led, ledBrightness);  // Atur kecerahan LED
    lcd.setCursor(4, 2);
    lcd.print("Cahaya Gelap");
    lcd.setCursor(1, 3);
    lcd.print("Lampu menyala:100%");

    Serial.print("Status Cahaya   : ");
    Serial.println("Cahaya Gelap");

    lampStatus = 100;
    Serial.print("Lamp Status	: ");
    Serial.print(lampStatus);
    Serial.println("%"); 

    textStatus1 = "Cahaya Gelap"; //Status
    textStatus = "On";  // Status teks untuk lampu 100% menyala
    Serial.print("Status Lampu	: ");
    Serial.println(textStatus);
    Serial.print("-----------------------------");
    Serial.println();
    delay(2000);
    lcd.clear();
  } 
  
  // Kondisi lampu mati
  else 
  {
    ledBrightness = 0;  // Lampu mati
    analogWrite(led, ledBrightness);  // Matikan LED
    lcd.setCursor(4, 2);
    lcd.print("Cahaya Terang");
    lcd.setCursor(5, 3);
    lcd.print("Lampu Mati");
    lampStatus = 0;
    Serial.print("Lamp Status	: ");

    Serial.print("Status Cahaya   : ");
    Serial.println("Cahaya Terang");    

    Serial.print(lampStatus);
    Serial.println("%");

    textStatus1 = "Cahaya Terang"; //Status
    textStatus = "Off";  // Status teks untuk lampu mati
    Serial.print("Status Lampu	: ");

    Serial.println(textStatus);
    Serial.print("-----------------------------");
    Serial.println();
    delay(2000);
    lcd.clear();
  }

    // Kirim data ke Blynk
  Blynk.virtualWrite(V0, analogValue);  // Nilai analog sensor
  Blynk.virtualWrite(V1, lux);          // Nilai lux
  Blynk.virtualWrite(V4, lampStatus);   // Status lampu (0, 50, 100)
  
  // Kirim status lampu sebagai teks ke Blynk (On/Off)
  Blynk.virtualWrite(V3, textStatus);   // Status teks (On atau Off)
  Blynk.virtualWrite(V2, textStatus1);   // Status teks (Terang, Redup atau Gelap)


}