#include <Adafruit_NeoPixel.h>

#define PIN 6 // Neopixelek csatlakoztatására használt Arduino láb
#define NUMPIXELS 16 // Neopixel LED-ek száma// Sensor pin definitions
#define LDR_PIN A0 //Ambient light sensor on Analaog 0 pin

const int sensor1A = 2; // First sensor at Point A pin 2
const int sensor1B = 4; // Second sensor at Point A pin 4
const int sensor2A = 3; // First sensor at Point B pin 3
const int sensor2B = 5; // Second sensor at Point B pin 5

// Counter for the number of objects in the area
int objectsInArea = 0;

// Variable for ambient light
int lightState = 0; // 0 = sötét, 1 = közepes, 2 = világos

// Timing variables
unsigned long lastTime1A = 0;
unsigned long lastTime1B = 0;
unsigned long lastTime2A = 0;
unsigned long lastTime2B = 0;
unsigned long lastMotionTime = 0;
const unsigned long timeout = 500; // 500 milliseconds to complete passage
const unsigned long resetTimeout = 5000; // 5 seconds to reset counter

// State tracking for each sensor
bool lastState1A = LOW;
bool lastState1B = LOW;
bool lastState2A = LOW;
bool lastState2B = LOW;

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin(); // Neopixel objektum inicializálása
  pixels.show();
  // Initialize sensor pins as inputs
  pinMode(sensor1A, INPUT);
  pinMode(sensor1B, INPUT);
  pinMode(sensor2A, INPUT);
  pinMode(sensor2B, INPUT);

  // Start the serial communication
  Serial.begin(9600);
}

void loop() {
  // Read sensor states
  bool currentState1A = digitalRead(sensor1A);
  bool currentState1B = digitalRead(sensor1B);
  bool currentState2A = digitalRead(sensor2A);
  bool currentState2B = digitalRead(sensor2B);

  unsigned long currentTime = millis();

  int ldrValue = analogRead(LDR_PIN);
  
  // Három tartomány meghatározása az LDR értékei alapján
  if (ldrValue < 341) {
    lightState = 0; // Sötét állapot
  } else if (ldrValue < 682) {
    lightState = 1; // Közepes állapot
  } else {
    lightState = 2; // Világos állapot
  }

    // Detect object entering the area from A to B
  if (lastState1A == LOW && currentState1A == HIGH) {
    lastTime1A = currentTime;
    lastMotionTime = currentTime;
  }
  if (lastState1B == LOW && currentState1B == HIGH && (currentTime - lastTime1A) < timeout) {
    objectsInArea++;
    lastTime1A = 0; // Reset the timer
    lastMotionTime = currentTime;
    Serial.print("Objects in area: ");
    Serial.println(objectsInArea);
    Serial.println("Entry at A");
    if (objectsInArea <= 1) {
      for(int i=NUMPIXELS-1; i>=0; i--) {
       for(int brightness = 0; brightness <= 255; brightness++) {
          pixels.setPixelColor(i, pixels.Color(brightness, brightness, brightness));
         pixels.show();
        }
      }
    }
  }


  // Detect object entering the area from B to A
  if (lastState2A == LOW && currentState2A == HIGH) {
    lastTime2A = currentTime;
    lastMotionTime = currentTime;
  }
  if (lastState2B == LOW && currentState2B == HIGH && (currentTime - lastTime2A) < timeout) {
    objectsInArea++;
    lastTime2A = 0; // Reset the timer
    lastMotionTime = currentTime;
    Serial.print("Objects in area: ");
    Serial.println(objectsInArea);
    Serial.println("Entry at B");
    if (objectsInArea <= 1) {
      for(int i=0; i<NUMPIXELS; i++) {
        for(int brightness = 0; brightness <= 255; brightness++) {
          pixels.setPixelColor(i, pixels.Color(brightness, brightness, brightness));
          pixels.show();
        }
      }
    }
  } 

  // Detect object leaving the area from B to A
  if (lastState2B == LOW && currentState2B == HIGH) {
    lastTime2B = currentTime;
    lastMotionTime = currentTime;
  }
  if (lastState2A == LOW && currentState2A == HIGH && (currentTime - lastTime2B) < timeout) {
    objectsInArea--;
    lastTime2B = 0; // Reset the timer
    lastMotionTime = currentTime;
    Serial.print("Objects in area: ");
    Serial.println(objectsInArea);
    Serial.println("Exit at B");
    if (objectsInArea < 1) {
      for(int i=NUMPIXELS-1; i>=0; i--) {
       for(int brightness = 255; brightness >= 0; brightness--) {
          pixels.setPixelColor(i, pixels.Color(brightness, brightness, brightness));
          pixels.show();
        }
      }
    }
  }

  // Detect object leaving the area from A to B
  if (lastState1B == LOW && currentState1B == HIGH) {
    lastTime1B = currentTime;
    lastMotionTime = currentTime;
  }
  if (lastState1A == LOW && currentState1A == HIGH && (currentTime - lastTime1B) < timeout) {
    objectsInArea--;
    lastTime1B = 0; // Reset the timer
    lastMotionTime = currentTime;
    Serial.print("Objects in area: ");
    Serial.println(objectsInArea);
    Serial.println("Exit at A");
    if (objectsInArea < 1) {
      for(int i=0; i<NUMPIXELS; i++) {
        for(int brightness = 255; brightness >= 0; brightness--) {
          pixels.setPixelColor(i, pixels.Color(brightness, brightness, brightness));
          pixels.show();
       }
     }
    }
  }

  // Reset counter if no motion detected for resetTimeout duration
  if (objectsInArea != 0) {
    if (currentTime - lastMotionTime > resetTimeout) {
      objectsInArea = 0;
      Serial.println("Objects in area reset to 0 due to inactivity.");
      lastMotionTime = currentTime; // Reset the last motion time to avoid repeated reset messages
        for(int brightness = 255; brightness >= 0; brightness--) {
          for(int i=0; i<NUMPIXELS; i++) {
            pixels.setPixelColor(i, pixels.Color(brightness, brightness, brightness));
          }
          pixels.show();
          delay(10);
        }
    }
  }

  // Update last states
  lastState1A = currentState1A;
  lastState1B = currentState1B;
  lastState2A = currentState2A;
  lastState2B = currentState2B;

  // Small delay to avoid bouncing issues
  delay(50);
}

/*
{
  else if (lightState == 0)
    for(int brightness = 0; brightness <= 50; brightness++) {
      for(int i=0; i<NUMPIXELS; i++) {
        pixels.setPixelColor(0, pixels.Color(brightness, 0, brightness));
        pixels.setPixelColor(15, pixels.Color(brightness, 0, brightness));
        }
      pixels.show();
      delay(10);
    }
  else if (lightState == 1)
    for(int brightness = 0; brightness <= 50; brightness++) {
      for(int i=0; i<NUMPIXELS; i++) {
        pixels.setPixelColor(i, pixels.Color(brightness, 0, brightness));
        }
      pixels.show();
      delay(10);
    }
  else if (lightState == 2)
    for(int brightness = 0; brightness <= 100; brightness++) {
      for(int i=0; i<NUMPIXELS; i++) {
        pixels.setPixelColor(i, pixels.Color(brightness, brightness, brightness));
       }
      pixels.show();
      delay(10);
    }
  }
}*/