#include <FastLED.h>
#include <Adafruit_GFX.h>
#include <Fonts/FreeSerif9pt7b.h>  // Optional: Use any font from Adafruit_GFX

#define DATA_PIN    D2       // Data pin for the matrix
#define NUM_LEDS    256     // Total LEDs (8 rows x 32 columns)
#define LED_TYPE    WS2812  // LED type
#define COLOR_ORDER GRB     // Color order

CRGB leds[NUM_LEDS];        // Array to store the LED colors
Adafruit_GFX *gfx;          // Pointer to the graphics object
int textX = 32;             // Starting X position for scrolling text

void setup() {
  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS); // Set up FastLED
  FastLED.setBrightness(50); // Set brightness level (0-255)

  gfx = new Adafruit_GFX(32, 8); // Initialize the graphics object for a 32x8 matrix

  // Initialize the matrix (clear it first)
  fill_solid(leds, NUM_LEDS, CRGB::Black);
  FastLED.show();
}

void loop() {
  // Message to scroll
  String message = "Hello World! ";

  // Scroll the message across the screen
  for (int x = textX; x >= -message.length() * 6; x--) {
    // Clear the previous frame
    fill_solid(leds, NUM_LEDS, CRGB::Black);

    // Draw the text at the current position (x)
    gfx->setCursor(x, 0);
    gfx->setTextColor(CRGB::White); // Set text color
    gfx->setTextSize(1);            // Set text size
    gfx->print(message);            // Print the message

    // Copy the graphics buffer to the LED array
    drawMatrixToLEDs();

    // Show the updated LEDs
    FastLED.show();
    delay(100); // Adjust the speed of the scroll
  }

  // Reset the starting point for the scroll after it goes off-screen
  textX = 32;
}

// Function to copy the Adafruit_GFX buffer to the LED array
void drawMatrixToLEDs() {
  for (int i = 0; i < 32; i++) {
    for (int j = 0; j < 8; j++) {
      int pixelColor = gfx->getTextColor(); // Get the color of the pixel (white or black)
      leds[j + i * 8] = (pixelColor == CRGB::White) ? CRGB::White : CRGB::Black;
    }
  }
}