get_result.hxx

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/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 *   Copyright 2020-Present Couchbase, Inc.
 *
 *   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.
 */
 
#pragma once
 
#include <couchbase/codec/default_json_transcoder.hxx>
#include <couchbase/result.hxx>
 
#include <chrono>
#include <cinttypes>
#include <memory>
#include <optional>
#include <vector>
 
namespace couchbase
{
#ifndef COUCHBASE_CXX_CLIENT_DOXYGEN
namespace crypto
{
class manager;
} // namespace crypto
#endif

class get_result : public result
{
public:
  get_result() = default;

  get_result(couchbase::cas cas,
             codec::encoded_value value,
             std::optional<std::chrono::system_clock::time_point> expiry_time,
             std::shared_ptr<crypto::manager> crypto_manager = {})
    : result{ cas }
    , value_{ std::move(value) }
    , expiry_time_{ expiry_time }
    , crypto_manager_{ std::move(crypto_manager) }
  {
  }

  template<typename Document,
           typename Transcoder = codec::default_json_transcoder,
           std::enable_if_t<!codec::is_transcoder_v<Document>, bool> = true,
           std::enable_if_t<codec::is_transcoder_v<Transcoder>, bool> = true>
  [[nodiscard]] auto content_as() const -> Document
  {
    if constexpr (codec::is_crypto_transcoder_v<Transcoder>) {
      return Transcoder::template decode<Document>(value_, crypto_manager_);
    } else {
      return Transcoder::template decode<Document>(value_);
    }
  }

  template<typename Transcoder, std::enable_if_t<codec::is_transcoder_v<Transcoder>, bool> = true>
  [[nodiscard]] auto content_as() const -> typename Transcoder::document_type
  {
    if constexpr (codec::is_crypto_transcoder_v<Transcoder>) {
      return Transcoder::decode(value_, crypto_manager_);
    } else {
      return Transcoder::decode(value_);
    }
  }

  [[nodiscard]] auto expiry_time() const
    -> const std::optional<std::chrono::system_clock::time_point>&
  {
    return expiry_time_;
  }
 
private:
  codec::encoded_value value_{};
  std::optional<std::chrono::system_clock::time_point> expiry_time_{};
  std::shared_ptr<crypto::manager> crypto_manager_{};
};
 
} // namespace couchbase