#!/usr/bin/env python3
"""Конвертер .doc → .docx через libreoffice. Принимает POST с файлом, возвращает docx."""
import subprocess, tempfile, os, sys

data = sys.stdin.buffer.read()
with tempfile.NamedTemporaryFile(suffix=".doc", delete=False) as f:
    f.write(data)
    doc_path = f.name

tmpdir = tempfile.mkdtemp()
try:
    subprocess.run(["libreoffice", "--headless", "--convert-to", "docx", "--outdir", tmpdir, doc_path],
                   timeout=30, capture_output=True)
    docx = [x for x in os.listdir(tmpdir) if x.endswith(".docx")]
    if docx:
        with open(os.path.join(tmpdir, docx[0]), "rb") as f:
            sys.stdout.buffer.write(f.read())
    else:
        sys.stdout.buffer.write(b"")
finally:
    os.unlink(doc_path)
    for x in os.listdir(tmpdir):
        os.unlink(os.path.join(tmpdir, x))
    os.rmdir(tmpdir)