"""Render the homepage's simple native tab symbols from editable vector geometry.
Run with Python + Pillow. No external images or fonts are used.
"""
from pathlib import Path
from PIL import Image, ImageDraw

DEST = Path(__file__).resolve().parents[1] / 'src/static/tab'
SIZE, SCALE = 81, 24
FACTOR = SIZE * 4 / SCALE

def render(name, active):
    image = Image.new('RGBA', (SIZE * 4, SIZE * 4))
    draw = ImageDraw.Draw(image)
    color = '#6b8276' if active else '#99948e'
    weight = round(1.35 * FACTOR)
    def box(coords): return tuple(round(value * FACTOR) for value in coords)
    def line(points, width=weight):
        points = [box(point) for point in points]
        draw.line(points, fill=color, width=width, joint='curve')
        r = width / 2
        for x, y in (points[0], points[-1]):
            draw.ellipse((x-r, y-r, x+r, y+r), fill=color)
    if name == 'home':
        roof = [(3.8,10), (12,3.2), (20.2,10)]
        if active:
            draw.polygon([box(p) for p in roof + [(20.2,20.4),(14.6,20.4),(14.6,13.2),(9.4,13.2),(9.4,20.4),(3.8,20.4)]], fill=color)
        else:
            line(roof)
            line([(5.2,9.5),(5.2,20.4),(9.4,20.4),(9.4,13.2),(14.6,13.2),(14.6,20.4),(18.8,20.4),(18.8,9.5)])
    elif name == 'booking':
        draw.rounded_rectangle(box((4.2,5.7,19.8,21)), radius=round(3*FACTOR), outline=color, width=weight)
        line([(4.5,10.5),(19.5,10.5)])
        line([(8,3.2),(8,7.8)])
        line([(16,3.2),(16,7.8)])
        if active:
            line([(8.5,15.8),(11,18),(15.8,13.8)])
    elif name == 'learn':
        draw.ellipse(box((3,3,21,21)), outline=color, width=weight)
        points = [(15.8,8.2),(13.7,13.7),(8.2,15.8),(10.3,10.3),(15.8,8.2)]
        if active:
            draw.polygon([box(p) for p in points], fill=color)
        else:
            line(points, round(1.1*FACTOR))
    elif name == 'profile':
        draw.ellipse(box((8,2.8,16,10.8)), outline=color, width=weight)
        draw.rounded_rectangle(box((4.2,14,19.8,21.5)), radius=round(3.6*FACTOR), outline=color, width=weight)
        if active:
            draw.ellipse(box((9.2,4,14.8,9.6)), fill=color)
    image = image.resize((SIZE,SIZE), Image.Resampling.LANCZOS)
    image.save(DEST / f"{name}{'-active' if active else ''}.png", optimize=True)

for name in ['home','booking','learn','profile']:
    for active in [False,True]:
        render(name,active)
print('Rendered 8 tab icons, 81×81px, sage active / warm-gray inactive.')