#define LDR_PIN 2
#define RLY_PIN 3

int lightState = 0;
unsigned long timer = 0;
unsigned long lastMillis = 0;

void setup() {
  // put your setup code here, to run once:

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

  Serial.begin(115200);
  Serial.println("System begin");



}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10);

int lux = 5;
  if (lux < 6) {
    // if timer done, dim
    // if (motion)
    // timer start
    // Full
    // else
    // Dim
  } else {
    // 0%
  }

  int ldrState = digitalRead(LDR_PIN);
  digitalWrite(RLY_PIN, lightState);

  if (ldrState == HIGH) {
    lightState = 0;
    timer = 0;
  } else {
    lightState = 1;
  }

  // Timer
  if (millis() - lastMillis > 1000) {
    lastMillis = millis();
    Serial.println("tick");

    if (lightState == 1) {
      Serial.println("Light: ON | " + String(timer) + "/1500");
      if (timer == 25 * 60) {
        lightState = 0;
        Serial.println("Time out, light turned off.");
      }
      timer += 1;
    }
  } else {

  }

}