/*
  Simple "Hello World" for ILI9341 LCD

  https://wokwi.com/arduino/projects/308024602434470466
*/

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

#define TFT_DC 9
#define TFT_CS 10
#define BUTTON_PIN1 7
#define BUTTON_PIN2 6
#define BUTTON_PIN3 5
#define BUTTON_PIN4 4

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

byte X = 0;
byte Y = 40;
byte W = 240;
byte H = 50;
byte progress = 0;

const int analogInPin = A0;

int outputValue = 0;
int previousValue = 0;

int currentBank = 0;
int currentPreset = 0;
int presetByBank = 4;
bool isSync = true;

class Parameter
{
  private:
    String label;
    int CC;
    int CurrentValue;
  public:
    Parameter(String label, int CC)
    {
      this->label = label;
      this->CC = CC;
      this->CurrentValue = 0;
    }
    String getLabel() {
      return label;
    }
    int getCurrentValue() {
      return CurrentValue;
    }
    int setCurrentValue(int value) {
      CurrentValue = value;
    }
};

Parameter parameters[] =
{
  Parameter("Volume", 12),
  Parameter("Mix", 13),
  Parameter("Wha", 14),
  Parameter("Pitch", 15),
  Parameter("Dly Mix", 16),
  Parameter("Dly Feed", 17),
};

void setup()
{
  Serial.begin(9600);
  tft.begin();
  tft.fillScreen(ILI9341_BLACK);

  pinMode(BUTTON_PIN1, INPUT_PULLUP);
  pinMode(BUTTON_PIN2, INPUT_PULLUP);
  pinMode(BUTTON_PIN3, INPUT_PULLUP);
  pinMode(BUTTON_PIN4, INPUT_PULLUP);
  Parameter p = parameters[1];
  p.setCurrentValue(99);
  DrawInfoPresets();
}

void loop()
{
  getExpressionValue();
  bar();
  changePresetEvent();
  delay(10);
}

void changePresetEvent()
{
  int value1 = digitalRead(BUTTON_PIN1);
  if (value1 == LOW)
  {
    currentPreset = 0;
    DrawInfoPresets();
    isSync = false;
  }
  int value2 = digitalRead(BUTTON_PIN2);
  if (value2 == LOW)
  {
    currentPreset = 1;
    DrawInfoPresets();
    isSync = false;
  }
  int value3 = digitalRead(BUTTON_PIN3);
  if (value3 == LOW)
  {
    currentPreset = 2;
    DrawInfoPresets();
    isSync = false;
  }
  int value4 = digitalRead(BUTTON_PIN4);
  if (value4 == LOW)
  {
    currentPreset = 3;
    DrawInfoPresets();
    isSync = false;
  }

}

int maxHeight = 260;
void getExpressionValue()
{
  previousValue = outputValue;
  int sensorValue = analogRead(analogInPin);
  outputValue = map(sensorValue, 0, 1023, 0, maxHeight);
  int valueMidi = map(sensorValue, 0, 1023, 0, 127);
  int index = (0 * currentBank * presetByBank) + currentPreset;
  if (isSync)
  {
    parameters[index].setCurrentValue(valueMidi);
  }

}

void bar()
{
  int X = 90;
  int Y = 30;
  int width = 60;
  static unsigned long timer = 0;
  unsigned long interval = 20;
  //if (millis() - timer >= interval)
  {

    tft.fillRect(X, Y + maxHeight - outputValue, width, outputValue, isSync ? ILI9341_GREEN : ILI9341_ORANGE);
    tft.fillRect(X, Y, width, maxHeight - outputValue, ILI9341_BLACK);
    int value10 = map(outputValue, 0, maxHeight, 0, 10);
    int previousValue10 = map(previousValue, 0, maxHeight, 0, 10);
    if (value10 != previousValue10)
    {
      //tft.fillRect(150, 100, 100, 100, ILI9341_BLUE); // erase old data
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(7);
      tft.setCursor(previousValue10 == 10 ? 0 : 30, 140);
      tft.println(previousValue10);
      tft.setTextColor(ILI9341_WHITE);
      tft.setCursor(value10 == 10 ? 0 : 30, 140);
      tft.println(value10);
    }
    if (!isSync)
    {
      Parameter p = parameters[(0 * currentBank * presetByBank) + currentPreset];
      int value = map(p.getCurrentValue(), 0, 127, 0, maxHeight);
      tft.fillRect(150, Y + maxHeight - value - 5, 240, 5, ILI9341_RED);
      if (abs(outputValue - value) < 5)
      {
        isSync = true;
        tft.fillRect(150, Y, 240, maxHeight + 5, ILI9341_BLACK);  //Clean info droite
      }
    }
  }
}

void DrawInfoPresets()
{
  tft.fillRect(150, Y, 240, maxHeight + 5, ILI9341_BLACK);  //Clean info droite
  int bottomY = 295;
  DrawInfoPreset(0,   0,       true,  0);
  DrawInfoPreset(120, 0,       false, 1);
  DrawInfoPreset(0,   bottomY, true,  2);
  DrawInfoPreset(120, bottomY, false, 3);
}

void DrawInfoPreset(int X, int Y, bool alignLeft, int index)
{
  Parameter parameter = parameters[(0 * currentBank * presetByBank) + index];
  int width = 120;
  int height = 25;
  tft.fillRect(X, Y, X + width, Y + height, ILI9341_BLACK); // erase old data
  if (index == currentPreset)
  {
    tft.fillRect(X, Y, width - (alignLeft ? 2 : 0), height, ILI9341_WHITE); // erase old data
    tft.setTextColor(ILI9341_BLACK);
  }
  else
  {
    tft.setTextColor(ILI9341_WHITE);
  }
  int additionnalX = alignLeft ? 0 : (10 - parameter.getLabel().length()) * 12;
  tft.setCursor(X + additionnalX, Y);
  tft.setTextSize(2);
  tft.println(parameter.getLabel());
  int value = map(parameter.getCurrentValue(), 0, 127, 0, 120);
  tft.drawRect(X, Y + 20, X + width - 2, 5, ILI9341_WHITE);
  tft.fillRect(X, Y + 20, value - 2, 5, ILI9341_WHITE);
}