"""Verify the exact scientific package allowlist before running downloaded code."""
from pathlib import Path
import hashlib
import json


def main():
    folder = Path(__file__).resolve().parent
    manifest = json.loads((folder / 'package-manifest.json').read_text())
    for item in manifest['files']:
        name = item['name']
        if Path(name).name != name:
            raise ValueError('Expected a flat scientific package')
        content = (folder / name).read_bytes()
        if len(content) != item['bytes'] or hashlib.sha256(content).hexdigest() != item['sha256']:
            raise ValueError('Package input failed byte verification: ' + name)
    assert not any(name.endswith(('.js', '.ts', '.dylib', '.so', '.pdf')) or name.endswith('_data.txt') for name in [item['name'] for item in manifest['files']])
    print('PASS:', len(manifest['files']), 'exact package inputs; no Lab executable, observed photometry or downloaded reference binaries')


if __name__ == '__main__': main()