"""Python Gettext detector."""

from pathlib import Path
from typing import Optional

from i18n_guardectors.base import Detector


class PythonGettextDetector(Detector):
    """Detect Python gettext module usage."""

    @property
    def name(self) -> str:
        return "python-gettext"

    @property
    def patterns(self) -> list:
        return ["*.py"]

    def detect(self, path: Path) -> Optional[str]:
        """Check for Python gettext usage."""
        for py_file in path.rglob("*.py"):
            try:
                content = py_file.read_text(encoding="utf-8")
                if any(
                    pattern in content
                    for pattern in [
                        "import gettext",
                        "from gettext import",
                        "gettext.gettext",
                        "gettext.ngettext",
                    ]
                ):
                    return self.name
            except OSError:
                continue

        locale_dir = path / "locale"
        if locale_dir.exists():
            for _ in locale_dir.rglob("*/LC_MESSAGES/*.mo"):
                return self.name

        return None

    def get_i18n_functions(self) -> list:
        """Get Python gettext function names."""
        return [
            "_",
            "gettext",
            "ngettext",
            "pgettext",
        ]