"""Read file metadata using both providers on a private synthetic file."""
import json
import os
from pathlib import Path
import platform
import sys
import tempfile
import time


FIELDS = ('st_dev', 'st_ino', 'st_size', 'st_mtime_ns', 'st_ctime_ns', 'st_birthtime_ns')


def values(info):
    return {name: getattr(info, name, None) for name in FIELDS}


with tempfile.TemporaryDirectory(prefix='wecom-stat-compat-') as directory:
    path = Path(directory) / 'synthetic-client.exe'
    path.write_bytes(b'file metadata compatibility, not an executable\x00')
    time.sleep(0.02)
    os.utime(path, ns=(946684800000000000, 946684800000000000))
    path_first = values(path.stat())
    with path.open('rb') as handle:
        fd_first = values(os.fstat(handle.fileno()))
        content = handle.read()
        fd_after = values(os.fstat(handle.fileno()))
        with path.open('rb') as reopened:
            fd_reopened = values(os.fstat(reopened.fileno()))
    path_after = values(path.stat())
    report = {
        'python': sys.version,
        'executable': sys.executable,
        'platform': platform.platform(),
        'pathStat': path_first,
        'fdStat': fd_first,
        'crossProviderDifferences': [name for name in FIELDS if path_first[name] != fd_first[name]],
        'pathProviderStable': path_first == path_after,
        'fdProviderStable': fd_first == fd_after == fd_reopened,
        'bytesRead': len(content),
        'scope': 'private temporary synthetic file; no client process access',
    }
print(json.dumps(report, ensure_ascii=False, indent=2))