from django.conf import settings

from apps.providers.adapters.balldontlie_provider import BalldontlieProviderAdapter
from apps.providers.adapters.mvp_provider import MvpDemoProviderAdapter
from apps.providers.exceptions import ProviderNotFoundError


PROVIDER_REGISTRY = {
    MvpDemoProviderAdapter.namespace: MvpDemoProviderAdapter,
    BalldontlieProviderAdapter.namespace: BalldontlieProviderAdapter,
}


def get_default_provider_namespace() -> str:
    if settings.PROVIDER_DEFAULT_NAMESPACE:
        return settings.PROVIDER_DEFAULT_NAMESPACE

    backend_map = {
        "demo": settings.PROVIDER_NAMESPACE_DEMO,
        "balldontlie": settings.PROVIDER_NAMESPACE_BALLDONTLIE,
    }
    return backend_map.get(settings.PROVIDER_BACKEND, settings.PROVIDER_NAMESPACE_DEMO)


def get_provider(namespace: str | None = None):
    provider_namespace = namespace or get_default_provider_namespace()
    provider_cls = PROVIDER_REGISTRY.get(provider_namespace)
    if not provider_cls:
        raise ProviderNotFoundError(f"Unknown provider namespace: {provider_namespace}")
    return provider_cls()