"""Development only: pip install resvg-py==0.5.0 Pillow.
Render the pinned Lucide SVG originals into embedded, multi-resolution Windows icons.
"""
from pathlib import Path
from io import BytesIO
from PIL import Image
import resvg_py
import re
import struct

root = Path(__file__).resolve().parents[1] / 'resources' / 'icons' / 'lucide'
names = ['circle-dot', 'arrow-up-right', 'undo-2', 'copy', 'x', 'redo-2', 'highlighter', 'palette', 'pencil', 'slash', 'square', 'circle', 'ellipse', 'type', 'a-large-small']
for name in names:
    svg = (root / f'{name}.svg').read_text(encoding='utf-8')
    for variant, color in [('normal', '#334155'), ('active', '#2563eb'), ('disabled', '#94a3b8')]:
        png = resvg_py.svg_to_bytes(svg_string=svg.replace('currentColor', color), width=256, height=256)
        im = Image.open(BytesIO(png)).convert('RGBA')
        im.save(root / f'{name}-{variant}.ico', sizes=[(s, s) for s in (16,20,22,24,28,32,40,44,48,56,64,96,128,256)])

# Small local visual QA sheet of the actual downloaded paths.
preview = Image.new('RGB', (len(names)*60, 72), '#f8fafc')
for i, name in enumerate(names):
    icon = Image.open(root / f'{name}-normal.ico').convert('RGBA').resize((32,32),Image.Resampling.LANCZOS)
    preview.paste(icon,(14+i*60,20),icon)
preview.save(root / 'preview.png')

# Cursor uses the same Lucide pencil, with a white outline for dark screenshots.
paths = '\n'.join(re.findall(r'<path\b[^>]+/>', (root / 'pencil.svg').read_text(encoding='utf-8')))
cursor_svg = f'''<svg xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 28 28" fill="none" stroke-linecap="round" stroke-linejoin="round">
<g stroke="white" stroke-width="4">{paths}</g><g stroke="#334155" stroke-width="2">{paths}</g></svg>'''
cursor_png = resvg_py.svg_to_bytes(svg_string=cursor_svg, width=256, height=256)
cursor_image = Image.open(BytesIO(cursor_png)).convert('RGBA')
buffer = BytesIO()
cursor_image.save(buffer, format='ICO', bitmap_format='bmp', sizes=[(s,s) for s in (32,48,64,96)])
cursor = bytearray(buffer.getvalue())
struct.pack_into('<H', cursor, 2, 2)  # CUR instead of ICO
for index in range(struct.unpack_from('<H', cursor, 4)[0]):
    entry = 6 + index * 16
    size = cursor[entry] or 256
    # Drawing point is the tip of the pencil, not the center of its image.
    struct.pack_into('<HH', cursor, entry+4, round(size*4/28), round(size*24/28))
(root / 'pencil.cur').write_bytes(cursor)

# Original confirmation artwork, with native-resolution variants for display scaling.
question = root.parent / 'question.svg'
question_png = resvg_py.svg_to_bytes(svg_string=question.read_text(encoding='utf-8'), width=256, height=256)
Image.open(BytesIO(question_png)).convert('RGBA').save(
    question.with_suffix('.ico'), sizes=[(s,s) for s in (16,20,24,32,40,48,64,96,128,256)])