"""Build a pinned private Windows x64 inspector runtime; no machine-wide install."""
import hashlib
import argparse
import json
import shutil
import subprocess
import sys
import urllib.request
import zipfile
from pathlib import Path

if sys.platform!='win32': raise SystemExit('Windows runtime provisioning runs on Windows only')
parser=argparse.ArgumentParser(description=__doc__)
parser.add_argument('--verify-existing',action='store_true',help='Verify exact installed locks/wheel before updating manifest; no dependency reinstall')
arguments=parser.parse_args()
VERSION='3.13.16'
CHECKSUM='97dae5274cc54867065e8d5a3226e48c35017ed332a0fdb0e27d5b5821961297'
root=Path.cwd().resolve()
directory=root/'.runtime'/'windows'/'python'
directory.mkdir(parents=True,exist_ok=True)
requirements=root/'apps'/'inspector'/'requirements.lock.txt'
macro_requirements=root/'apps'/'inspector'/'requirements-macros.lock.txt'
pdf_requirements=root/'apps'/'inspector'/'requirements-pdf.lock.txt'
requirements_hash=hashlib.sha256(requirements.read_bytes()+macro_requirements.read_bytes()+pdf_requirements.read_bytes()).hexdigest()
manifest=directory/'safetynet-runtime.json'
expected={'python':VERSION,'architecture':'amd64','sha256':CHECKSUM,'requirementsHash':requirements_hash}
previous=json.loads(manifest.read_text()) if manifest.exists() else {}
pdf_wheel=directory.parent/'pypdfium2-5.14.0-py3-none-win_amd64.whl'
pdf_checksum='149fd5c6397b8df8bf7911a93506eff0be874f877afe7ac936cf5d37d21a6a06'
if not arguments.verify_existing and not pdf_wheel.exists():
    # Retain the reviewed wheel for independent verification on fresh builds.
    # Verification mode remains offline and never repairs a missing archive.
    subprocess.run([sys.executable,'-m','pip','download','--dest',str(directory.parent),
                    '--platform','win_amd64','--python-version','3.13','--implementation','cp','--abi','cp313',
                    '--only-binary=:all:','--no-deps','--require-hashes','-r',str(pdf_requirements)],check=True)
if not pdf_wheel.is_file() or hashlib.sha256(pdf_wheel.read_bytes()).hexdigest()!=pdf_checksum:
    raise SystemExit('Retained PDF renderer wheel missing or checksum mismatch')
if arguments.verify_existing:
    if any(previous.get(k)!=expected[k] for k in ('python','architecture','sha256')):
        raise SystemExit('Existing private runtime identity mismatch')
    subprocess.run([str(directory/'python.exe'),str(root/'scripts/verify-python-dependencies.py')],check=True)
if previous!=expected and not arguments.verify_existing:
    archive=directory.parent/f'python-{VERSION}-embed-amd64.zip'
    if not archive.exists() or hashlib.sha256(archive.read_bytes()).hexdigest()!=CHECKSUM:
        with urllib.request.urlopen(f'https://www.python.org/ftp/python/{VERSION}/python-{VERSION}-embed-amd64.zip',timeout=60) as response:
            payload=response.read(20*1024*1024)
        if hashlib.sha256(payload).hexdigest()!=CHECKSUM: raise SystemExit('Python runtime checksum mismatch')
        archive.write_bytes(payload)
    if not (directory/'python.exe').exists() or any(previous.get(k)!=expected[k] for k in ('python','architecture','sha256')):
        with zipfile.ZipFile(archive) as package:
            for entry in package.infolist():
                target=(directory/entry.filename).resolve()
                if not target.is_relative_to(directory): raise SystemExit('Runtime archive path rejected')
                if not entry.is_dir():
                    target.parent.mkdir(parents=True,exist_ok=True)
                    target.write_bytes(package.read(entry))
    (directory/'python313._pth').write_text('python313.zip\n.\nLib/site-packages\n../inspector\nimport site\n')
    subprocess.run([sys.executable,'-m','pip','install','--target',str(directory/'Lib'/'site-packages'),
                    '--platform','win_amd64','--python-version','3.13','--implementation','cp','--abi','cp313',
                    '--only-binary=:all:','--require-hashes','--upgrade','-r',str(requirements)],check=True)
    subprocess.run([sys.executable,'-m','pip','install','--target',str(directory/'Lib'/'site-packages'),
                    '--platform','win_amd64','--python-version','3.13','--implementation','cp','--abi','cp313',
                    '--only-binary=:all:','--no-deps','--require-hashes','--upgrade','-r',str(macro_requirements)],check=True)
    subprocess.run([sys.executable,'-m','pip','install','--target',str(directory/'Lib'/'site-packages'),
                    '--platform','win_amd64','--python-version','3.13','--implementation','cp','--abi','cp313',
                    '--only-binary=:all:','--no-deps','--require-hashes','--upgrade','-r',str(pdf_requirements)],check=True)
    manifest.write_text(json.dumps(expected,indent=2))
inspector=directory.parent/'inspector'
inspector.mkdir(exist_ok=True)
for name in ['stage_timings.py','pdf_documents.py','office_content.py','office_macros.py','engine.py','server.py','semantic.py','windows_containment.py','windows_appcontainer.py','sandbox_worker.py','provision_runtime_acl.py']:
    shutil.copyfile(root/'apps'/'inspector'/name,inspector/name)
subprocess.run([str(directory/'python.exe'),'-c','import pypdf, PIL, defusedxml, yara, engine; assert engine.inspect_content(b"public", {"dlp":{"maxBytes":1024,"rules":[],"semantic":{"enabled":False}}})["decision"] == "allow"; assert yara.compile(source="rule test { condition: true }").match(data=b"test"); engine.local_ocr(); print("Bundled Windows inspector, YARA and offline ONNX OCR runtime verified.")'],check=True)
subprocess.run([str(directory/'python.exe'),str(root/'apps/inspector/provision_runtime_acl.py'),'--provision'],check=True)
if arguments.verify_existing:
    manifest.write_text(json.dumps(expected,indent=2))