# coding=UTF-8

CANVAS = {
    'max_long_side': 500,
    'min_long_side': 20,
    'max_short_side': 150,
    'min_short_side': 20
}

CANVAS_FRAME = {
    'max_long_side': 150,
    'min_long_side': 40,
    'max_short_side': 150,
    'min_short_side': 40,
}


def calculate_canvas_frame_limits(width, height):
    if width > height:
        width = min(width, CANVAS_FRAME.get('max_long_side'))
        width = max(width, CANVAS_FRAME.get('min_long_side'))
        height = min(height, CANVAS_FRAME.get('max_short_side'))
        height = max(height, CANVAS_FRAME.get('min_short_side'))
    else:
        height = min(height, CANVAS_FRAME.get('max_long_side'))
        height = max(height, CANVAS_FRAME.get('min_long_side'))
        width = min(width, CANVAS_FRAME.get('max_short_side'))
        width = max(width, CANVAS_FRAME.get('min_short_side'))

    # round to nearest 10
    width = round(width, -1)
    height = round(height, -1)

    return width, height


def calculate_canvas_limits(width, height, framed=False):
    if framed:
        return calculate_canvas_frame_limits(width, height)

    if width > height:
        width = min(width, CANVAS.get('max_long_side'))
        width = max(width, CANVAS.get('min_long_side'))
        height = min(height, CANVAS.get('max_short_side'))
        height = max(height, CANVAS.get('min_short_side'))
    else:
        height = min(height, CANVAS.get('max_long_side'))
        height = max(height, CANVAS.get('min_long_side'))
        width = min(width, CANVAS.get('max_short_side'))
        width = max(width, CANVAS.get('min_short_side'))

    return width, height