// Copyright 2022 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
//
//      https://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.

// Generated by the Codegen C++ plugin.
// If you make any local changes, they will be lost.
// source: google/cloud/dialogflow/cx/v3/session.proto

#include "google/cloud/dialogflow_cx/internal/sessions_connection_impl.h"
#include "google/cloud/dialogflow_cx/internal/sessions_option_defaults.h"
#include "google/cloud/background_threads.h"
#include "google/cloud/common_options.h"
#include "google/cloud/grpc_options.h"
#include "google/cloud/internal/pagination_range.h"
#include "google/cloud/internal/resumable_streaming_read_rpc.h"
#include "google/cloud/internal/retry_loop.h"
#include "google/cloud/internal/streaming_read_rpc_logging.h"
#include <memory>
#include <utility>

namespace google {
namespace cloud {
namespace dialogflow_cx_internal {
GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN
namespace {

std::unique_ptr<dialogflow_cx::SessionsRetryPolicy> retry_policy(
    Options const& options) {
  return options.get<dialogflow_cx::SessionsRetryPolicyOption>()->clone();
}

std::unique_ptr<BackoffPolicy> backoff_policy(Options const& options) {
  return options.get<dialogflow_cx::SessionsBackoffPolicyOption>()->clone();
}

std::unique_ptr<dialogflow_cx::SessionsConnectionIdempotencyPolicy>
idempotency_policy(Options const& options) {
  return options
      .get<dialogflow_cx::SessionsConnectionIdempotencyPolicyOption>()
      ->clone();
}

}  // namespace

void SessionsServerStreamingDetectIntentStreamingUpdater(
    google::cloud::dialogflow::cx::v3::DetectIntentResponse const&,
    google::cloud::dialogflow::cx::v3::DetectIntentRequest&) {}

SessionsConnectionImpl::SessionsConnectionImpl(
    std::unique_ptr<google::cloud::BackgroundThreads> background,
    std::shared_ptr<dialogflow_cx_internal::SessionsStub> stub, Options options)
    : background_(std::move(background)),
      stub_(std::move(stub)),
      options_(internal::MergeOptions(std::move(options),
                                      SessionsConnection::options())) {}

StatusOr<google::cloud::dialogflow::cx::v3::DetectIntentResponse>
SessionsConnectionImpl::DetectIntent(
    google::cloud::dialogflow::cx::v3::DetectIntentRequest const& request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  return google::cloud::internal::RetryLoop(
      retry_policy(*current), backoff_policy(*current),
      idempotency_policy(*current)->DetectIntent(request),
      [this](grpc::ClientContext& context, Options const& options,
             google::cloud::dialogflow::cx::v3::DetectIntentRequest const&
                 request) {
        return stub_->DetectIntent(context, options, request);
      },
      *current, request, __func__);
}

StreamRange<google::cloud::dialogflow::cx::v3::DetectIntentResponse>
SessionsConnectionImpl::ServerStreamingDetectIntent(
    google::cloud::dialogflow::cx::v3::DetectIntentRequest const& request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  auto factory =
      [stub = stub_,
       current](google::cloud::dialogflow::cx::v3::DetectIntentRequest const&
                    request) {
        return stub->ServerStreamingDetectIntent(
            std::make_shared<grpc::ClientContext>(), *current, request);
      };
  auto resumable = internal::MakeResumableStreamingReadRpc<
      google::cloud::dialogflow::cx::v3::DetectIntentResponse,
      google::cloud::dialogflow::cx::v3::DetectIntentRequest>(
      retry_policy(*current), backoff_policy(*current), factory,
      SessionsServerStreamingDetectIntentStreamingUpdater, request);
  return internal::MakeStreamRange<
      google::cloud::dialogflow::cx::v3::DetectIntentResponse>(
      [resumable = std::move(resumable)]()
          -> absl::variant<
              Status, google::cloud::dialogflow::cx::v3::DetectIntentResponse> {
        google::cloud::dialogflow::cx::v3::DetectIntentResponse response;
        auto status = resumable->Read(&response);
        if (status.has_value()) return *status;
        return response;
      });
}

std::unique_ptr<::google::cloud::AsyncStreamingReadWriteRpc<
    google::cloud::dialogflow::cx::v3::StreamingDetectIntentRequest,
    google::cloud::dialogflow::cx::v3::StreamingDetectIntentResponse>>
SessionsConnectionImpl::AsyncStreamingDetectIntent() {
  return stub_->AsyncStreamingDetectIntent(
      background_->cq(), std::make_shared<grpc::ClientContext>(),
      internal::SaveCurrentOptions());
}

StatusOr<google::cloud::dialogflow::cx::v3::MatchIntentResponse>
SessionsConnectionImpl::MatchIntent(
    google::cloud::dialogflow::cx::v3::MatchIntentRequest const& request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  return google::cloud::internal::RetryLoop(
      retry_policy(*current), backoff_policy(*current),
      idempotency_policy(*current)->MatchIntent(request),
      [this](grpc::ClientContext& context, Options const& options,
             google::cloud::dialogflow::cx::v3::MatchIntentRequest const&
                 request) {
        return stub_->MatchIntent(context, options, request);
      },
      *current, request, __func__);
}

StatusOr<google::cloud::dialogflow::cx::v3::FulfillIntentResponse>
SessionsConnectionImpl::FulfillIntent(
    google::cloud::dialogflow::cx::v3::FulfillIntentRequest const& request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  return google::cloud::internal::RetryLoop(
      retry_policy(*current), backoff_policy(*current),
      idempotency_policy(*current)->FulfillIntent(request),
      [this](grpc::ClientContext& context, Options const& options,
             google::cloud::dialogflow::cx::v3::FulfillIntentRequest const&
                 request) {
        return stub_->FulfillIntent(context, options, request);
      },
      *current, request, __func__);
}

StatusOr<google::cloud::dialogflow::cx::v3::AnswerFeedback>
SessionsConnectionImpl::SubmitAnswerFeedback(
    google::cloud::dialogflow::cx::v3::SubmitAnswerFeedbackRequest const&
        request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  return google::cloud::internal::RetryLoop(
      retry_policy(*current), backoff_policy(*current),
      idempotency_policy(*current)->SubmitAnswerFeedback(request),
      [this](
          grpc::ClientContext& context, Options const& options,
          google::cloud::dialogflow::cx::v3::SubmitAnswerFeedbackRequest const&
              request) {
        return stub_->SubmitAnswerFeedback(context, options, request);
      },
      *current, request, __func__);
}

StreamRange<google::cloud::location::Location>
SessionsConnectionImpl::ListLocations(
    google::cloud::location::ListLocationsRequest request) {
  request.clear_page_token();
  auto current = google::cloud::internal::SaveCurrentOptions();
  auto idempotency = idempotency_policy(*current)->ListLocations(request);
  char const* function_name = __func__;
  return google::cloud::internal::MakePaginationRange<
      StreamRange<google::cloud::location::Location>>(
      current, std::move(request),
      [idempotency, function_name, stub = stub_,
       retry = std::shared_ptr<dialogflow_cx::SessionsRetryPolicy>(
           retry_policy(*current)),
       backoff = std::shared_ptr<BackoffPolicy>(backoff_policy(*current))](
          Options const& options,
          google::cloud::location::ListLocationsRequest const& r) {
        return google::cloud::internal::RetryLoop(
            retry->clone(), backoff->clone(), idempotency,
            [stub](
                grpc::ClientContext& context, Options const& options,
                google::cloud::location::ListLocationsRequest const& request) {
              return stub->ListLocations(context, options, request);
            },
            options, r, function_name);
      },
      [](google::cloud::location::ListLocationsResponse r) {
        std::vector<google::cloud::location::Location> result(
            r.locations().size());
        auto& messages = *r.mutable_locations();
        std::move(messages.begin(), messages.end(), result.begin());
        return result;
      });
}

StatusOr<google::cloud::location::Location> SessionsConnectionImpl::GetLocation(
    google::cloud::location::GetLocationRequest const& request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  return google::cloud::internal::RetryLoop(
      retry_policy(*current), backoff_policy(*current),
      idempotency_policy(*current)->GetLocation(request),
      [this](grpc::ClientContext& context, Options const& options,
             google::cloud::location::GetLocationRequest const& request) {
        return stub_->GetLocation(context, options, request);
      },
      *current, request, __func__);
}

StreamRange<google::longrunning::Operation>
SessionsConnectionImpl::ListOperations(
    google::longrunning::ListOperationsRequest request) {
  request.clear_page_token();
  auto current = google::cloud::internal::SaveCurrentOptions();
  auto idempotency = idempotency_policy(*current)->ListOperations(request);
  char const* function_name = __func__;
  return google::cloud::internal::MakePaginationRange<
      StreamRange<google::longrunning::Operation>>(
      current, std::move(request),
      [idempotency, function_name, stub = stub_,
       retry = std::shared_ptr<dialogflow_cx::SessionsRetryPolicy>(
           retry_policy(*current)),
       backoff = std::shared_ptr<BackoffPolicy>(backoff_policy(*current))](
          Options const& options,
          google::longrunning::ListOperationsRequest const& r) {
        return google::cloud::internal::RetryLoop(
            retry->clone(), backoff->clone(), idempotency,
            [stub](grpc::ClientContext& context, Options const& options,
                   google::longrunning::ListOperationsRequest const& request) {
              return stub->ListOperations(context, options, request);
            },
            options, r, function_name);
      },
      [](google::longrunning::ListOperationsResponse r) {
        std::vector<google::longrunning::Operation> result(
            r.operations().size());
        auto& messages = *r.mutable_operations();
        std::move(messages.begin(), messages.end(), result.begin());
        return result;
      });
}

StatusOr<google::longrunning::Operation> SessionsConnectionImpl::GetOperation(
    google::longrunning::GetOperationRequest const& request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  return google::cloud::internal::RetryLoop(
      retry_policy(*current), backoff_policy(*current),
      idempotency_policy(*current)->GetOperation(request),
      [this](grpc::ClientContext& context, Options const& options,
             google::longrunning::GetOperationRequest const& request) {
        return stub_->GetOperation(context, options, request);
      },
      *current, request, __func__);
}

Status SessionsConnectionImpl::CancelOperation(
    google::longrunning::CancelOperationRequest const& request) {
  auto current = google::cloud::internal::SaveCurrentOptions();
  return google::cloud::internal::RetryLoop(
      retry_policy(*current), backoff_policy(*current),
      idempotency_policy(*current)->CancelOperation(request),
      [this](grpc::ClientContext& context, Options const& options,
             google::longrunning::CancelOperationRequest const& request) {
        return stub_->CancelOperation(context, options, request);
      },
      *current, request, __func__);
}

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END
}  // namespace dialogflow_cx_internal
}  // namespace cloud
}  // namespace google
