"""Storage adapter SPI and backend registry.

Backends address bytes by content address (ADR-0001). The SPI is small
(``put`` / ``get`` / ``head`` / ``delete`` / ``health``) so swapping or
adding adapters never touches the registry or API layers.
"""

from artifactstore.storage.backends.local import LocalBackend
from artifactstore.storage.backends.s3 import S3Backend, S3BackendConfig
from artifactstore.storage.registry import (
    clear as clear_backends,
)
from artifactstore.storage.registry import (
    get as get_backend,
)
from artifactstore.storage.registry import (
    list_backends,
)
from artifactstore.storage.registry import (
    register as register_backend,
)
from artifactstore.storage.spi import (
    BackendStatus,
    DeletionResult,
    ObjectNotFoundError,
    StorageBackend,
    StorageObjectMetadata,
    StorageReceipt,
)

__all__ = [
    "BackendStatus",
    "DeletionResult",
    "LocalBackend",
    "ObjectNotFoundError",
    "S3Backend",
    "S3BackendConfig",
    "StorageBackend",
    "StorageObjectMetadata",
    "StorageReceipt",
    "clear_backends",
    "get_backend",
    "list_backends",
    "register_backend",
]