// #include <Adafruit_NeoPixel.h>

#ifdef __AVR__
#include <avr/power.h>  // Required for 16 MHz Adafruit Trinket
#endif

#define NUM_SLIDERS 5           // Number of sliders
// #define NUM_PIXELS 12           // Number of neopixels per strip
#define NUM_BUTTONS NUM_SLIDERS // Number of buttons

#define MAX_POT_VALUE 4095 // Max value of the potentiometer

#define BAUD_RATE 9600

#define DEBUG 0 // Set to 1 to debug the inputs and outputs on the serial port

// Pins for the potentiometers, neopixels, and buttons
const int analogInputs[NUM_SLIDERS] = {A0, A1, A2, A3, A4};
// const int stripPin[NUM_SLIDERS] = {3, 4, 5, 6, 7};
const int digitalInputs[NUM_BUTTONS] = {12, 11, 10, 9, 8};

// For storing slider values and button states
int analogSliderValues[NUM_SLIDERS];
int buttonState[NUM_BUTTONS];

// For button debouncing
int oldButtonState[NUM_BUTTONS];
int mute[NUM_BUTTONS];

// Adafruit_NeoPixel strips[NUM_SLIDERS]; // Neopixel strips

// Colors for the neopixels
// uint32_t colors[NUM_SLIDERS] = {
//     strips[0].Color(221, 160, 221), //purple
//     strips[1].Color(255, 69, 0),    //orange
//     strips[2].Color(50, 205, 50),   //green
//     strips[3].Color(255, 255, 51),  //yellow
//     strips[4].Color(0, 191, 255)    //blue
// };

void setup() {
    for(int i = 0; i < NUM_SLIDERS; i++) {
        // Initialize inputs
        pinMode(analogInputs[i], INPUT);         // Potentiometers
        pinMode(digitalInputs[i], INPUT_PULLUP); // Buttons

        // Initialize button states
        oldButtonState[i] = 0;
        mute[i] = 1;

        // Initialize neopixels
        // strips[i] = Adafruit_NeoPixel(NUM_PIXELS, stripPin[i], NEO_GRB + NEO_KHZ800);
        // strips[i].setBrightness(5);
        // strips[i].begin();
    }

    Serial.begin(BAUD_RATE);
}

void loop() {
    updateSliderValues();
    sendSliderValues(); // Actually send data (all the time)

    buttonActions(); // Check for button presses

    // neopixel();
    delay(10);
}

void updateSliderValues() {
    // Read the potentiometers and store the values in an array
    for(int i = 0; i < NUM_SLIDERS; i++)
        analogSliderValues[i] = analogRead(analogInputs[i]) * mute[i];
}

void sendSliderValues() {
    // Send the slider values to the serial port
    String builtString = String("");

    for(int i = 0; i < NUM_SLIDERS; i++) {
        builtString += String((int)analogSliderValues[i]);

        if(i < NUM_SLIDERS -1)
            builtString += String("|");
    }

    if(DEBUG)
        Serial.print("Slider: ");

    Serial.println(builtString);
}

void buttonActions() {
    for(int i = 0; i < NUM_BUTTONS; i++) {
        oldButtonState[i] = buttonState[i];
        buttonState[i] = digitalRead(digitalInputs[i]);

        if(buttonState[i] == LOW && oldButtonState[i] == HIGH)
            mute[i] = !mute[i];
    }

    if(DEBUG)
        sendButtonStates();
}

void sendButtonStates() {
    // Send the button states to the serial port
    String builtString = String("");

    for(int i = 0; i < NUM_BUTTONS; i++) {
        builtString += String((int)buttonState[i]);

        if(i < NUM_BUTTONS -1)
            builtString += String("|");
    }

    Serial.print("Button: ");
    Serial.println(builtString);
}

// void neopixel() {
//     int pixelValue[NUM_SLIDERS];

//     for(int i = 0; i < NUM_SLIDERS; i++) {
//         pixelValue[i] = map(analogSliderValues[i], 0, MAX_POT_VALUE, 0, NUM_PIXELS + 1);

//         if(pixelValue[i] != 0) {
//             strips[i].clear();
//             strips[i].fill(colors[i], 0, pixelValue[i]);
//             strips[i].show();
//         } else { 
//             strips[i].clear();
//             strips[i].show();
//         }
//     }

//     if(DEBUG)
//         sendNeopixelValues(pixelValue);
// }

// void sendNeopixelValues(int *pixelValue) {
//     // Send the neopixel values to the serial port
//     String builtString = String("");

//     for(int i = 0; i < NUM_SLIDERS; i++) {
//         builtString += String((int)pixelValue[i]);

//         if(i < NUM_SLIDERS -1)
//             builtString += String("|");
//     }

//     Serial.print("Neopixel: ");
//     Serial.println(builtString);
// }