const int NUM_SLIDERS = 10;
const int analogInputs[NUM_SLIDERS] = {4, 5, 6, 7, 15, 16, 17, 18, 8, 3};

int analogSliderValues[NUM_SLIDERS];
int mappedSliderValues[NUM_SLIDERS];

void setup() { 
  for (int i = 0; i < NUM_SLIDERS; i++) {
    pinMode(analogInputs[i], INPUT);
  }

  Serial.begin(9600);
}

void loop() {
  updateSliderValues();
  mapSliderValues(); // Map 4096 values to 1024 values, ESP -> Deej
  sendSliderValues(); // Actually send data (all the time)
  // printSliderValues(); // For debug
  delay(10);
}

// This is for ESPs since the ADC measures between 0 and 4095, 
// however, deej expects 0 to 1023.
void mapSliderValues() {
  for (int i = 0; i < NUM_SLIDERS; i++) {
    mappedSliderValues[i] = map(analogSliderValues[i], 0, 4095, 0, 1023);
  }
}

void updateSliderValues() {
  for (int i = 0; i < NUM_SLIDERS; i++) {
     analogSliderValues[i] = analogRead(analogInputs[i]);
  }
}

void sendSliderValues() {
  String builtString = String("");

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

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

void printSliderValues() {
  for (int i = 0; i < NUM_SLIDERS; i++) {
    String printedString = String("Slider #") + String(i + 1) + String(": ") + String(analogSliderValues[i]) + String(" mV");
    Serial.write(printedString.c_str());

    if (i < NUM_SLIDERS - 1) {
      Serial.write(" | ");
    } else {
      Serial.write("\n");
    }
  }
}