#include "MIDIUSB.h"
#include <CD74HC4067.h> // Biblioteka do obsługi multiplexera CD74HC4067
// Arduino (pro)micro midi functions MIDIUSB Library

// Deklaracje funkcji
void noteOn(byte channel, byte pitch, byte velocity);
void controlChange(byte channel, byte control, byte value);

CD74HC4067 multiplexer(5, 4, 3, 2); // Inicjalizacja multiplexera z odpowiednimi pinami sterującymi

// BUTTONS (Two buttons as per your original code)
const int N_BUTTON = 2;
byte buttonPin[N_BUTTON] = {6, 7};
byte buttonState[N_BUTTON] = {0};
byte buttonPState[N_BUTTON] = {0};
int debounceDelay = 10;
unsigned long lastDebounceTime[N_BUTTON] = {0};
unsigned long debounceTimer[N_BUTTON] = {0};

// POTENTIOMETERS
const int N_POT = 11; // Number of faders

byte midiState[N_POT] = {0};
byte midiPState[N_POT] = {0};

int varThreshold = 300;

unsigned long potTimer[N_POT] = {80};
unsigned long lastPotTime[N_POT] = {0};
const int POT_TIMEOUT = 300;
boolean potGate[N_POT] = {false};

byte MIDI_CH = 0;
byte CC[N_POT] = {20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}; // Assign different CC numbers for each fader

void setup() {
  Serial.begin(115200);

  for (int i = 0; i < N_BUTTON; i++) {
    pinMode(buttonPin[i], INPUT_PULLUP);
  }

  multiplexer.channel(A0); // Wybierz pierwszy kanał na początek
}

void loop() {
  buttons();
  potentiometers();
}

void buttons() {
  // Your button handling code here
  // (Same as your existing code)
}

void potentiometers() {
  for (int i = 0; i < N_POT; i++) {
    // Select the appropriate channel on the multiplexer
    multiplexer.channel(i);

    // Read the value from the potentiometer
    int potState = analogRead(A0); // Wykorzystaj A0 jako pin analogowy do odczytu wartości potencjometra

    // Map the value to the MIDI range
    byte midiValue = map(potState, 0, 1023, 0, 127);

    int potVar = abs(potState - midiPState[i]);

    if (potVar > varThreshold) {
      lastPotTime[i] = millis();
    }

    potTimer[i] = millis() - lastPotTime[i];

    if (potTimer[i] < POT_TIMEOUT) {
      potGate[i] = true;
    } else {
      potGate[i] = false;
    }

    if (potGate[i] == true) {
      if (midiValue != midiPState[i]) {
        controlChange(MIDI_CH, CC[i], midiValue);
        MidiUSB.flush();

        Serial.print("Fader ");
        Serial.print(i);
        Serial.print(": ");
        Serial.print(midiValue);
        Serial.println();

        midiPState[i] = midiValue;
      }
    }
  }
}