#!/usr/bin/env python3
"""LibreOffice converter — Flask HTTP service. POST .doc → .docx."""
import subprocess, tempfile, os
from flask import Flask, request, send_file

app = Flask(__name__)

@app.route("/convert", methods=["POST"])
def convert():
    if "file" not in request.files:
        return {"ok": False, "error": "no file"}, 400

    f = request.files["file"]
    with tempfile.NamedTemporaryFile(suffix=".doc", delete=False) as tmp:
        f.save(tmp)
        doc_path = tmp.name

    tmpdir = tempfile.mkdtemp()
    try:
        subprocess.run(
            ["libreoffice", "--headless", "--convert-to", "docx", "--outdir", tmpdir, doc_path],
            timeout=120, capture_output=True, check=True
        )
        docx_files = [x for x in os.listdir(tmpdir) if x.endswith(".docx")]
        if not docx_files:
            return {"ok": False, "error": "conversion produced no .docx"}, 500
        return send_file(os.path.join(tmpdir, docx_files[0]),
                         mimetype="application/vnd.openxmlformats-officedocument.wordprocessingml.document",
                         as_attachment=True,
                         download_name=os.path.splitext(f.filename)[0] + ".docx")
    except subprocess.TimeoutExpired:
        return {"ok": False, "error": "conversion timeout"}, 500
    except subprocess.CalledProcessError as e:
        return {"ok": False, "error": f"libreoffice: {e.stderr.decode() if e.stderr else 'unknown'}"}, 500
    finally:
        if os.path.exists(doc_path):
            os.unlink(doc_path)
        for x in os.listdir(tmpdir):
            os.unlink(os.path.join(tmpdir, x))
        os.rmdir(tmpdir)

@app.route("/health", methods=["GET"])
def health():
    return {"ok": True}

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5000)