import logging
from dataclasses import dataclass

logger = logging.getLogger(__name__)


@dataclass
class FeatureDefinition:
    slug: str
    name: str = ""
    description: str = ""
    default: bool = True
    category: str | None = None


class FeatureRegistry:
    """Registry where every app registers its feature flags in apps.py:ready()."""

    _features: dict[str, FeatureDefinition] = {}

    @classmethod
    def register(
        cls,
        slug: str,
        *,
        name: str = "",
        description: str = "",
        default: bool = True,
        category: str | None = None,
    ):
        cls._features[slug] = FeatureDefinition(
            slug=slug,
            name=name or slug,
            description=description,
            default=default,
            category=category,
        )
        logger.debug(f"Feature flag registered: {slug} (default={default})")

    @classmethod
    def get_all(cls) -> dict[str, FeatureDefinition]:
        return dict(cls._features)