# -*- coding: utf-8 -*-
# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from collections import OrderedDict
import functools
import re
from typing import (
    Dict,
    AsyncIterable,
    Awaitable,
    AsyncIterator,
    Sequence,
    Tuple,
    Type,
    Union,
)
import pkg_resources

from google.api_core.client_options import ClientOptions  # type: ignore
from google.api_core import exceptions as core_exceptions  # type: ignore
from google.api_core import gapic_v1  # type: ignore
from google.api_core import retry as retries  # type: ignore
from google.auth import credentials as ga_credentials  # type: ignore
from google.oauth2 import service_account  # type: ignore

OptionalRetry = Union[retries.Retry, object]

from google.cloud.apigeeconnect_v1.types import tether
from google.protobuf import duration_pb2  # type: ignore
from .transports.base import TetherTransport, DEFAULT_CLIENT_INFO
from .transports.grpc_asyncio import TetherGrpcAsyncIOTransport
from .client import TetherClient


class TetherAsyncClient:
    """Tether provides a way for the control plane to send HTTP API
    requests to services in data planes that runs in a remote
    datacenter without requiring customers to open firewalls on
    their runtime plane.
    """

    _client: TetherClient

    DEFAULT_ENDPOINT = TetherClient.DEFAULT_ENDPOINT
    DEFAULT_MTLS_ENDPOINT = TetherClient.DEFAULT_MTLS_ENDPOINT

    common_billing_account_path = staticmethod(TetherClient.common_billing_account_path)
    parse_common_billing_account_path = staticmethod(
        TetherClient.parse_common_billing_account_path
    )
    common_folder_path = staticmethod(TetherClient.common_folder_path)
    parse_common_folder_path = staticmethod(TetherClient.parse_common_folder_path)
    common_organization_path = staticmethod(TetherClient.common_organization_path)
    parse_common_organization_path = staticmethod(
        TetherClient.parse_common_organization_path
    )
    common_project_path = staticmethod(TetherClient.common_project_path)
    parse_common_project_path = staticmethod(TetherClient.parse_common_project_path)
    common_location_path = staticmethod(TetherClient.common_location_path)
    parse_common_location_path = staticmethod(TetherClient.parse_common_location_path)

    @classmethod
    def from_service_account_info(cls, info: dict, *args, **kwargs):
        """Creates an instance of this client using the provided credentials
            info.

        Args:
            info (dict): The service account private key info.
            args: Additional arguments to pass to the constructor.
            kwargs: Additional arguments to pass to the constructor.

        Returns:
            TetherAsyncClient: The constructed client.
        """
        return TetherClient.from_service_account_info.__func__(TetherAsyncClient, info, *args, **kwargs)  # type: ignore

    @classmethod
    def from_service_account_file(cls, filename: str, *args, **kwargs):
        """Creates an instance of this client using the provided credentials
            file.

        Args:
            filename (str): The path to the service account private key json
                file.
            args: Additional arguments to pass to the constructor.
            kwargs: Additional arguments to pass to the constructor.

        Returns:
            TetherAsyncClient: The constructed client.
        """
        return TetherClient.from_service_account_file.__func__(TetherAsyncClient, filename, *args, **kwargs)  # type: ignore

    from_service_account_json = from_service_account_file

    @property
    def transport(self) -> TetherTransport:
        """Returns the transport used by the client instance.

        Returns:
            TetherTransport: The transport used by the client instance.
        """
        return self._client.transport

    get_transport_class = functools.partial(
        type(TetherClient).get_transport_class, type(TetherClient)
    )

    def __init__(
        self,
        *,
        credentials: ga_credentials.Credentials = None,
        transport: Union[str, TetherTransport] = "grpc_asyncio",
        client_options: ClientOptions = None,
        client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO,
    ) -> None:
        """Instantiates the tether client.

        Args:
            credentials (Optional[google.auth.credentials.Credentials]): The
                authorization credentials to attach to requests. These
                credentials identify the application to the service; if none
                are specified, the client will attempt to ascertain the
                credentials from the environment.
            transport (Union[str, ~.TetherTransport]): The
                transport to use. If set to None, a transport is chosen
                automatically.
            client_options (ClientOptions): Custom options for the client. It
                won't take effect if a ``transport`` instance is provided.
                (1) The ``api_endpoint`` property can be used to override the
                default endpoint provided by the client. GOOGLE_API_USE_MTLS_ENDPOINT
                environment variable can also be used to override the endpoint:
                "always" (always use the default mTLS endpoint), "never" (always
                use the default regular endpoint) and "auto" (auto switch to the
                default mTLS endpoint if client certificate is present, this is
                the default value). However, the ``api_endpoint`` property takes
                precedence if provided.
                (2) If GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable
                is "true", then the ``client_cert_source`` property can be used
                to provide client certificate for mutual TLS transport. If
                not provided, the default SSL client certificate will be used if
                present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not
                set, no client certificate will be used.

        Raises:
            google.auth.exceptions.MutualTlsChannelError: If mutual TLS transport
                creation failed for any reason.
        """
        self._client = TetherClient(
            credentials=credentials,
            transport=transport,
            client_options=client_options,
            client_info=client_info,
        )

    def egress(
        self,
        requests: AsyncIterator[tether.EgressResponse] = None,
        *,
        retry: OptionalRetry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> Awaitable[AsyncIterable[tether.EgressRequest]]:
        r"""Egress streams egress requests and responses.
        Logically, this is not actually a streaming request, but
        uses streaming as a mechanism to flip the client-server
        relationship of gRPC so that the server can act as a
        client.
        The listener, the RPC server, accepts connections from
        the dialer, the RPC client.
        The listener streams http requests and the dialer
        streams http responses.

        Args:
            requests (AsyncIterator[`google.cloud.apigeeconnect_v1.types.EgressResponse`]):
                The request object AsyncIterator. gRPC response payload for tether.
            retry (google.api_core.retry.Retry): Designation of what errors, if any,
                should be retried.
            timeout (float): The timeout for this request.
            metadata (Sequence[Tuple[str, str]]): Strings which should be
                sent along with the request as metadata.

        Returns:
            AsyncIterable[google.cloud.apigeeconnect_v1.types.EgressRequest]:
                gRPC request payload for tether.
        """

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = gapic_v1.method_async.wrap_method(
            self._client._transport.egress,
            default_timeout=None,
            client_info=DEFAULT_CLIENT_INFO,
        )

        # Send the request.
        response = rpc(requests, retry=retry, timeout=timeout, metadata=metadata,)

        # Done; return the response.
        return response

    async def __aenter__(self):
        return self

    async def __aexit__(self, exc_type, exc, tb):
        await self.transport.close()


try:
    DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo(
        gapic_version=pkg_resources.get_distribution(
            "google-cloud-apigee-connect",
        ).version,
    )
except pkg_resources.DistributionNotFound:
    DEFAULT_CLIENT_INFO = gapic_v1.client_info.ClientInfo()


__all__ = ("TetherAsyncClient",)
