#!/usr/bin/env python
# -*- coding: utf-8 -*-

from vestactrl import setup_digits, board_init_uart
import textwrap

def send_sign(text):
    """
    Wraps and sends text to the Vestaboard.
    """
    COLS = 22
    ROWS = 6

    # Wrap text to fit the board's width.
    lines = textwrap.wrap(text, width=COLS)

    # Truncate if the message is too long for the board's height.
    if len(lines) > ROWS:
        lines = lines[:ROWS]

    # The board controller expects spaces to be replaced with `0 for a blank character.
    board_lines = [line.replace(' ', '`0') for line in lines]

    # setup_digits handles displaying the lines on the board.
    # It will also vertically center the block of text.
    setup_digits(board_lines, left_to_right_swap=False, real_hw=True)


if __name__ == '__main__':
    # Initialize communication with the board.
    board_init_uart()
    message = "This is a test of the protosign script. This message should wrap across multiple lines and be truncated if it is too long to fit on the display."
    send_sign(message)