#include <Arduino.h>
#include <Adafruit_NeoPixel.h>

#define BUTTON1_PIN 12
#define BUTTON2_PIN 14
#define BUTTON3_PIN 27
#define BUTTON4_PIN 26

#define NEOPIXEL_PIN 5
#define NEOPIXEL_COUNT 4

Adafruit_NeoPixel neopixels(NEOPIXEL_COUNT, NEOPIXEL_PIN, NEO_GRB + NEO_KHZ800);

#define PUMP1_PIN 25
#define PUMP2_PIN 33
#define PUMP3_PIN 32
#define PUMP4_PIN 35

#define LONG_PRESS_DURATION 2000 // 2 seconds
#define DEBOUNCE_DELAY 50



bool pumpState[] = {false, true, false, false};
bool lastButtonState[] = {false, false, false, false};
unsigned long lastPressTime[] = {0, 0, 0, 0};
bool buttonPressed = false;
bool longPress = false;

void setup() {
  Serial.begin(115200);
  pinMode(BUTTON1_PIN, INPUT_PULLUP);
  pinMode(BUTTON2_PIN, INPUT_PULLUP);
  pinMode(BUTTON3_PIN, INPUT_PULLUP);
  pinMode(BUTTON4_PIN, INPUT_PULLUP);

  pinMode(PUMP1_PIN, OUTPUT);
  pinMode(PUMP2_PIN, OUTPUT);
  pinMode(PUMP3_PIN, OUTPUT);
  pinMode(PUMP4_PIN, OUTPUT);

  attachInterrupt(digitalPinToInterrupt(BUTTON1_PIN), checkButtons, CHANGE);
  attachInterrupt(digitalPinToInterrupt(BUTTON2_PIN), checkButtons, CHANGE);
  attachInterrupt(digitalPinToInterrupt(BUTTON3_PIN), checkButtons, CHANGE);
  attachInterrupt(digitalPinToInterrupt(BUTTON4_PIN), checkButtons, CHANGE);
  
  neopixels.begin();
  neopixels.show();

    for (int i = 0; i < NEOPIXEL_COUNT; i++) {
    neopixels.setPixelColor(i, 0, 0, 255);
  }
  neopixels.show();
  delay(1000);
  for (int i = 0; i < NEOPIXEL_COUNT; i++) {
    neopixels.setPixelColor(i, 0);
  }
  neopixels.show();

}

void loop() {
  if (buttonPressed) {
    Serial.print("X");
    for (int i = 0; i < NEOPIXEL_COUNT; i++) {
      if (longPress) {
         Serial.print("LAng");
        // This part is left for you to implement based on your desired behavior
      } else {
        Serial.print("kurz ");// Blink the neopixel corresponding to the pressed button
        // This part is left for you to implement based on your desired behavior
      }
      neopixels.setPixelColor(i, 255, 0, 100); 
      neopixels.show();// Blink all neopixels red or green according to pumpState
      delay(100);
    }
    buttonPressed = false;
    longPress = false;
  }
  else 
    {
      for (int i = 0; i < NEOPIXEL_COUNT; i++) {
        neopixels.setPixelColor(i, 0, 0, 0); // off
        neopixels.show();// Blink all neopixels red or green according to pumpState
      }
    }
}

void checkButtons() {
  
  for (int i = 0; i < 4; i++) {
    int buttonPin;
    switch (i) {
      case 0:
        buttonPin = BUTTON2_PIN;
        break;
      case 1:
        buttonPin = BUTTON1_PIN;
        break;
      case 2:
        buttonPin = BUTTON3_PIN;
        break;
      case 3:
        buttonPin = BUTTON4_PIN;
        break;
      default:
        break;
    }

    bool buttonState = digitalRead(buttonPin);

    

    if (millis() - lastPressTime[i] > DEBOUNCE_DELAY) {
      if (buttonState != lastButtonState[i]) {
        if (buttonState == LOW) { // Button pressed
          buttonPressed = true;
          if (millis() - lastPressTime[i] > LONG_PRESS_DURATION) {
            longPress = true;
            Serial.print("L");
          }
        }
      }
    }

    lastButtonState[i] = buttonState;
  }
}