#include <RTClib.h>
#include <ESP32Servo.h>

#define RELAY_PIN 0
#define LDR_PIN 2
#define SERVO_PIN 15

RTC_DS1307 rtc;

const float GAMMA = 0.7;
const float RL10 = 50;

const int morningAlarmHour = 6;
const int morningAlarmMinute = 30;

const int eveningAlarmHour = 18;
const int eveningAlarmMinute = 0;

Servo servo;

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

  servo.attach(SERVO_PIN, 500, 2400);

  pinMode(RELAY_PIN, OUTPUT);
  pinMode(LDR_PIN, INPUT);

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running, let's set the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

int pos = 0;

void loop() {

  // relayOn();
  // delay(1000);
  // relayOff();
  // delay(2000);

  int analogValue = analogRead(LDR_PIN);  // Di ESP32, resolusi ADC bisa berbeda
  float voltage = analogValue * (5.0 / 4095.0);  // ESP32 memiliki resolusi 12-bit (0-4095)
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

  DateTime time = rtc.now();

  Serial.println("Room: ");
  if (lux > 50) {
    relayOff();
    Serial.println("Light!");
  } else {
    relayOn();
    Serial.println("Dark  ");
  }

  Serial.print("Lux: ");
  Serial.print(lux);
  Serial.print('\n');


  Serial.println(String("Waktu : ") + time.hour() + String(":") + time.minute());

  Serial.println("\n");

  for (pos = 0; pos <= 90; pos += 1) {
    servo.write(pos);
    delay(15);
  }
  for (pos = 90; pos >= 0; pos -= 1) {
    servo.write(pos);
    delay(15);
  }

  // put your main code here, to run repeatedly:
  delay(500); // this speeds up the simulation
}

void relayOn() {
  digitalWrite(RELAY_PIN, HIGH);
}

void relayOff() {
  digitalWrite(RELAY_PIN, LOW);
}

/*
  servo
  relay
  led
  sensor cahaya
  rtc
  mikrokontroller

*/