# Simple wrapper around uQR found at https://github.com/JASchilz/uQR
import display, keyboard
from uqr import uQR

def draw_qr(qr_data):
    print(qr_data)
    display.drawFill(0xffffff)
    qr = uQR.QRCode()
    qr.add_data(qr_data)
    matrix = qr.get_matrix()
    sizes = [display.width(), display.height()]
    sizes.sort()
    rastersize = (sizes[0] // len(matrix))
    pos_x = (display.width() - rastersize * len(matrix[0])) // 2
    pos_y = (display.height() - rastersize * len(matrix)) // 2
    for matrix_y in range(len(matrix)):
        for matrix_x in range(len(matrix[0])):
            black = matrix[matrix_y][matrix_x]
            if black:
                display.drawRect(pos_x + matrix_x * rastersize, pos_y + matrix_y * rastersize , rastersize, rastersize, True, 0)
    display.flush()

def main():
    display.clearMatrix()
    display.drawFill(0xffffff)
    data = keyboard.show("What should the QR Code read?", "", draw_qr)

# Start the main program.
if not __name__ == "uqr":
   main()