"""
from https://github.com/Ferdi265/card10-digiclk
"""

DIGITS = [
    (True, True, True, True, True, True, False),
    (False, True, True, False, False, False, False),
    (True, True, False, True, True, False, True),
    (True, True, True, True, False, False, True),
    (False, True, True, False, False, True, True),
    (True, False, True, True, False, True, True),
    (True, False, True, True, True, True, True),
    (True, True, True, False, False, False, False),
    (True, True, True, True, True, True, True),
    (True, True, True, True, False, True, True)
]


def ceil_div(a, b):
    return (a + (b - 1)) // b


def tip_height(w):
    return ceil_div(w, 2) - 1


def draw_tip(d, x, y, w, c, invert=False, swapAxes=False):
    h = tip_height(w)
    for dy in range(h):
        for dx in range(dy + 1, w - 1 - dy):
            px = x + dx
            py = y + dy if not invert else y + h - 1 - dy
            if swapAxes:
                px, py = py, px
            d.pixel(px, py, col=c)


def draw_seg(d, x, y, w, h, c, swapAxes=False):
    tip_h = tip_height(w)
    body_h = h - 2 * tip_h
    draw_tip(d, x, y, w, c, invert=True, swapAxes=swapAxes)
    px1, px2 = x, x + (w - 1)
    py1, py2 = y + tip_h, y + tip_h + (body_h - 1)
    if swapAxes:
        px1, px2, py1, py2 = py1, py2, px1, px2
    d.rect(px1, py1, px2, py2, col=c)
    draw_tip(d, x, y + tip_h + body_h, w, c, invert=False, swapAxes=swapAxes)


def draw_Vseg(d, x, y, w, l, c):
    draw_seg(d, x, y, w, l, c)


def draw_Hseg(d, x, y, w, l, c):
    draw_seg(d, y, x, w, l, c, swapAxes=True)


def draw_grid_seg(d, x, y, w, l, c, swapAxes=False):
    sw = w - 2
    tip_h = tip_height(sw)
    x = x * w
    y = y * w
    l = (l - 1) * w
    draw_seg(d, x + 1, y + tip_h + 3, sw, l - 3, c, swapAxes=swapAxes)


def draw_grid_Vseg(d, x, y, w, l, c):
    draw_grid_seg(d, x, y, w, l, c)


def draw_grid_Hseg(d, x, y, w, l, c):
    draw_grid_seg(d, y, x, w, l, c, swapAxes=True)


def draw_grid(d, x1, y1, x2, y2, w, c):
    for x in range(x1 * w, x2 * w):
        for y in range(y1 * w, y2 * w):
            if x % w == 0 or x % w == w - 1 or y % w == 0 or y % w == w - 1:
                d.pixel(x, y, col=c)


def draw_grid_7seg(d, x, y, w, segs, c):
    if segs[0]:
        draw_grid_Hseg(d, x, y, w, 4, c)
    if segs[1]:
        draw_grid_Vseg(d, x + 3, y, w, 4, c)
    if segs[2]:
        draw_grid_Vseg(d, x + 3, y + 3, w, 4, c)
    if segs[3]:
        draw_grid_Hseg(d, x, y + 6, w, 4, c)
    if segs[4]:
        draw_grid_Vseg(d, x, y + 3, w, 4, c)
    if segs[5]:
        draw_grid_Vseg(d, x, y, w, 4, c)
    if segs[6]:
        draw_grid_Hseg(d, x, y + 3, w, 4, c)


def render_num(d, num, x, c=(255, 255, 255)):
    draw_grid_7seg(d, x, 0, 7, DIGITS[num // 10], c)
    draw_grid_7seg(d, x + 5, 0, 7, DIGITS[num % 10], c)


def render_colon(d, c=(255, 255, 255)):
    draw_grid_Vseg(d, 11, 2, 7, 2, c)
    draw_grid_Vseg(d, 11, 4, 7, 2, c)