"""Factory for user-scoped cloud storage backends."""


def build_cloud_backend(provider: str, credentials: dict):
    if provider == "google_drive":
        from storage.google_drive_backend import GoogleDriveBackend  # lazy import

        return GoogleDriveBackend(credentials)

    if provider == "onedrive":
        from storage.onedrive_backend import OneDriveBackend  # lazy import

        return OneDriveBackend(credentials)

    if provider == "nextcloud":
        from storage.nextcloud_backend import NextcloudBackend  # lazy import

        return NextcloudBackend(
            credentials["server_url"],
            credentials["username"],
            credentials["password"],
        )

    if provider == "webdav":
        from storage.webdav_backend import WebDAVBackend  # lazy import

        return WebDAVBackend(
            credentials["server_url"],
            credentials["username"],
            credentials["password"],
        )

    raise ValueError(f"Unknown provider: {provider}")