# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.

import asyncio
import importlib
from typing import Any, Dict

from .datatypes import InlineProviderSpec, ProviderSpec, RemoteProviderConfig


def instantiate_class_type(fully_qualified_name):
    module_name, class_name = fully_qualified_name.rsplit(".", 1)
    module = importlib.import_module(module_name)
    return getattr(module, class_name)


# returns a class implementing the protocol corresponding to the Api
def instantiate_provider(
    provider_spec: ProviderSpec,
    provider_config: Dict[str, Any],
    deps: Dict[str, ProviderSpec],
):
    module = importlib.import_module(provider_spec.module)

    config_type = instantiate_class_type(provider_spec.config_class)
    if isinstance(provider_spec, InlineProviderSpec):
        if provider_spec.is_adapter:
            if not issubclass(config_type, RemoteProviderConfig):
                raise ValueError(
                    f"Config class {provider_spec.config_class} does not inherit from RemoteProviderConfig"
                )
    config = config_type(**provider_config)

    if isinstance(provider_spec, InlineProviderSpec):
        args = [config, deps]
    else:
        args = [config]
    return asyncio.run(module.get_provider_impl(*args))