"""Dependency-free, offline gallery packager. Run from any directory."""
from pathlib import Path
import hashlib
import html
import json
import re

root = Path(__file__).resolve().parents[1]
source = root / 'assets/animejs'
vendor = root / 'assets/vendor/anime.umd.min.js'
entries = [entry for entry in json.loads((root / 'vendor-manifest.json').read_text(encoding='utf-8'))
           if entry['path'] == 'assets/vendor/anime.umd.min.js']
if len(entries) != 1 or hashlib.sha256(vendor.read_bytes()).hexdigest() != entries[0]['sha256']:
    raise ValueError('Missing, duplicate or mismatched Anime vendor fingerprint')
text = (source / 'index.html').read_text()
text = text.replace('<link rel="stylesheet" href="gallery.css">', '<style>' + (source / 'gallery.css').read_text() + '</style>')
for name, file in [('../vendor/anime.umd.min.js', vendor), ('examples.js', source / 'examples.js'), ('gallery.js', source / 'gallery.js')]:
    js = re.sub(r'//# sourceMappingURL=.*', '', file.read_text())
    text = text.replace(f'<script src="{name}"></script>', '<script>' + js.replace('</script', r'<\/script') + '</script>')
text = text.replace('ANIME_LICENSE', html.escape((root / 'assets/vendor/anime-LICENSE.md').read_text()))
out = root / 'dist/animejs-gallery-0.4.0.html'
out.parent.mkdir(exist_ok=True)
out.write_text(text)
inputs = [*sorted(source.glob('*')), vendor, root / 'assets/vendor/anime-LICENSE.md']
report = {'file': out.name, 'sha256': hashlib.sha256(out.read_bytes()).hexdigest(), 'anime':'4.5.0', 'examples':5, 'inputs':{str(p.relative_to(root)):hashlib.sha256(p.read_bytes()).hexdigest() for p in inputs if p.is_file()}}
(root / 'dist/animejs-gallery-manifest.json').write_text(json.dumps(report, indent=2) + '\n')
print(json.dumps(report, indent=2))