install

#!/usr/bin/env python3
"""Entry point for the install command."""

from __future__ import annotations

import importlib.util
import os
import sys
from pathlib import Path

PYQA_ROOT = Path(__file__).resolve().parent
SRC_DIR = PYQA_ROOT / "src"
CLI_LAUNCHER_PATH = SRC_DIR / "pyqa" / "cli" / "launcher" / "__init__.py"
VERBOSE_ENV = "PYQA_WRAPPER_VERBOSE"


def _debug(message: str) -> None:
    if os.environ.get(VERBOSE_ENV):
        print(message, file=sys.stderr)


def _extend_sys_path(root: Path) -> None:
    """Inject virtualenv site-packages directories into ``sys.path``."""

    candidate_roots = [root / ".venv" / "lib", root / ".venv" / "Lib"]
    for base in candidate_roots:
        if not base.exists():
            _debug(f"Skipping missing site-packages root: {base}")
            continue
        for site_packages in base.glob("python*/site-packages"):
            site_str = str(site_packages)
            if site_str not in sys.path:
                sys.path.insert(0, site_str)
                _debug(f"Prepended site-packages to sys.path: {site_packages}")
            else:
                _debug(f"Site-packages already on sys.path: {site_packages}")


if str(SRC_DIR) not in sys.path:
    sys.path.insert(0, str(SRC_DIR))
    _debug(f"Prepended src directory to sys.path: {SRC_DIR}")
else:
    _debug(f"Src directory already on sys.path: {SRC_DIR}")


_extend_sys_path(PYQA_ROOT)


loader_spec = importlib.util.spec_from_file_location("_pyqa_cli_launcher", CLI_LAUNCHER_PATH)
if loader_spec is None:
    raise ImportError(f"Unable to locate CLI launcher at {CLI_LAUNCHER_PATH}")
module = importlib.util.module_from_spec(loader_spec)
if loader_spec.loader is None:
    raise ImportError("CLI launcher loader is not available")
loader_spec.loader.exec_module(module)
_debug(f"Loaded CLI launcher from {CLI_LAUNCHER_PATH}")

launch = module.launch


def main() -> None:
    """Launch the install command."""

    launch("install")


if __name__ == "__main__":
    main()