#include <Adafruit_NeoPixel.h>
#include <TFT_eSPI.h>  // Hardware-specific library

TFT_eSPI tft;  // Invoke custom library

#define PIN BCM27
#define NUMPIXELS 12

#define SW7 BCM4
#define SW6 BCM5

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

bool toEdit = false;
int menu = 0;
int R_val, G_val, B_val, bright_val, led_num_val;
int R_bar_val, G_bar_val, B_bar_val;

void setup() {

  pinMode(SW7, INPUT_PULLUP);
  pinMode(SW6, INPUT_PULLUP);

  pixels.begin();  // This initializes the NeoPixel library.
  pixels.clear();
  pixels.show();

  tft.begin();
  tft.setRotation(3);
  tft.setTextSize(3);
  tft.fillScreen(TFT_BLACK);

  tft.drawString("LED AMOUNT:", 10, 10);
  tft.drawString("BRIGHTNESS:", 10, 60);
  tft.drawString("R:", 10, 110);
  tft.drawRect(48, 108, 154, 29, TFT_RED);
  tft.drawString("G:", 10, 160);
  tft.drawRect(48, 158, 154, 29, TFT_GREEN);
  tft.drawString("B:", 10, 210);
  tft.drawRect(48, 208, 154, 29, TFT_BLUE);
  analogReadResolution(12);
}

void loop() {
  if ((digitalRead(SW7) == LOW) && toEdit == false) {
    while (digitalRead(SW7) == LOW) { delay(200); }
    menu++;
    if (menu > 4) {
      menu = 0;
    }
    tft.fillRect(290, 0, 40, 240, TFT_BLACK);
  }
  if (digitalRead(SW6) == LOW) {
    while (digitalRead(SW6) == LOW) { delay(200); }
    toEdit = !toEdit;
    tft.fillRect(290, 0, 40, 240, TFT_BLACK);
  }
  switch (toEdit) {
    case true:
      {

        tft.fillTriangle(300, 20 + (50 * menu), 319, 10 + (50 * menu), 319, 30 + (50 * menu), TFT_RED);
        switch (menu) {
          case 0:
            {
              led_num_val = map(analogRead(1), 0, 4095, 0, 12);
              break;
            }
          case 1:
            {
              bright_val = map(analogRead(1), 0, 4095, 0, 255);
              break;
            }
          case 2:
            {
              R_val = map(analogRead(1), 0, 4095, 0, 255);
              R_bar_val = map(analogRead(1), 0, 4095, 0, 150);
              break;
            }
          case 3:
            {
              G_val = map(analogRead(1), 0, 4095, 0, 255);
              G_bar_val = map(analogRead(1), 0, 4095, 0, 150);
              break;
            }
          case 4:
            {
              B_val = map(analogRead(1), 0, 4095, 0, 255);
              B_bar_val = map(analogRead(1), 0, 4095, 0, 150);
              break;
            }
        }
        break;
      }
    case false:
      {
        tft.fillTriangle(300, 20 + (50 * menu), 319, 10 + (50 * menu), 319, 30 + (50 * menu), TFT_WHITE);
        break;
      }
  }
  tft.drawString(String(led_num_val) + "  ", 210, 10);
  
  tft.drawString(String(bright_val) + "  ", 210, 60);

  tft.fillRect(50, 110, R_bar_val, 25, TFT_RED);
  tft.fillRect(50 + R_bar_val, 110, 150 - R_bar_val, 25, TFT_BLACK);
  tft.drawString(String(R_val) + "  ", 210, 110);

  tft.fillRect(50, 160, G_bar_val, 25, TFT_GREEN);
  tft.fillRect(50 + G_bar_val, 160, 150 - G_bar_val, 25, TFT_BLACK);
  tft.drawString(String(G_val) + "  ", 210, 160);

  tft.fillRect(50, 210, B_bar_val, 25, TFT_BLUE);
  tft.fillRect(50 + B_bar_val, 210, 150 - B_bar_val, 25, TFT_BLACK);
  tft.drawString(String(B_val) + "  ", 210, 210);

  pixels.setBrightness(bright_val);
  for (int j = 1; j <= led_num_val; j++) {
    pixels.setPixelColor(j - 1, pixels.Color(R_val, G_val, B_val));
    pixels.show();  // This sends the updated pixel color to the hardware.
  }
  for (int j = NUMPIXELS; j > led_num_val; j--) {
    pixels.setPixelColor(j - 1, pixels.Color(0, 0, 0));
    pixels.show();  // This sends the updated pixel color to the hardware.
  }
}