"""Portable LibreOffice runner for Windows, macOS and Linux."""

import os
import platform
import shutil
import subprocess
import sys
import tempfile
from pathlib import Path


def resolve_soffice_binary():
    explicit = os.environ.get("SOFFICE_PATH")
    if explicit:
        candidate = Path(explicit).expanduser()
        if candidate.is_file():
            return str(candidate)
        raise FileNotFoundError(f"SOFFICE_PATH does not exist: {candidate}")
    names = ("soffice.com", "soffice.exe", "soffice") if platform.system() == "Windows" else ("soffice",)
    for name in names:
        binary = shutil.which(name)
        if binary:
            return binary
    candidates = [Path("/Applications/LibreOffice.app/Contents/MacOS/soffice")]
    if platform.system() == "Windows":
        candidates = [
            Path(root) / "LibreOffice/program" / name
            for root in (os.environ.get("ProgramFiles"), os.environ.get("ProgramFiles(x86)")) if root
            for name in ("soffice.com", "soffice.exe")
        ]
    for candidate in candidates:
        if candidate.is_file():
            return str(candidate)
    raise FileNotFoundError("LibreOffice not found. Install it or set SOFFICE_PATH to its executable.")


def get_soffice_env():
    env = os.environ.copy()
    env["PYTHONUTF8"] = "1"
    if platform.system() == "Linux":
        env.setdefault("SAL_USE_VCLPLUGIN", "svp")
    return env


def run_soffice(args, **kwargs):
    binary = resolve_soffice_binary()
    kwargs.setdefault("env", get_soffice_env())
    kwargs.setdefault("timeout", 120)
    if any(str(arg).startswith("-env:UserInstallation=") for arg in args):
        return subprocess.run([binary, *args], **kwargs)
    with tempfile.TemporaryDirectory(prefix="skill-lo-", ignore_cleanup_errors=True) as profile:
        profile_arg = f"-env:UserInstallation={Path(profile).resolve().as_uri()}"
        return subprocess.run([binary, profile_arg, *args], **kwargs)


if __name__ == "__main__":
    try:
        raise SystemExit(run_soffice(sys.argv[1:]).returncode)
    except (FileNotFoundError, subprocess.TimeoutExpired) as exc:
        print(str(exc), file=sys.stderr)
        raise SystemExit(1)