/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 *   Copyright 2020-2021 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 "core/analytics_scan_consistency.hxx"
#include "core/error_context/analytics.hxx"
#include "core/io/http_context.hxx"
#include "core/io/http_message.hxx"
#include "core/io/http_traits.hxx"
#include "core/json_string.hxx"
#include "core/platform/uuid.h"
#include "core/public_fwd.hxx"
#include "core/timeout_defaults.hxx"

namespace couchbase::core::operations
{
struct analytics_response {
  struct analytics_metrics {
    std::chrono::nanoseconds elapsed_time{};
    std::chrono::nanoseconds execution_time{};
    std::uint64_t result_count{};
    std::uint64_t result_size{};
    std::uint64_t error_count{};
    std::uint64_t processed_objects{};
    std::uint64_t warning_count{};
  };

  struct analytics_problem {
    std::uint64_t code;
    std::string message;
  };

  enum analytics_status {
    running = 0,
    success,
    errors,
    completed,
    stopped,
    timedout,
    closed,
    fatal,
    aborted,
    unknown,
  };

  struct analytics_meta_data {
    std::string request_id;
    std::string client_context_id;
    analytics_status status;
    analytics_metrics metrics{};
    std::optional<std::string> signature{};
    std::vector<analytics_problem> errors{};
    std::vector<analytics_problem> warnings{};
  };

  error_context::analytics ctx;
  analytics_meta_data meta{};
  std::vector<std::string> rows{};
};

struct analytics_request {
  using response_type = analytics_response;
  using encoded_request_type = io::http_request;
  using encoded_response_type = io::http_response;
  using error_context_type = error_context::analytics;

  static const inline service_type type = service_type::analytics;

  std::string statement;

  bool readonly{ false };
  bool priority{ false };
  std::optional<std::string> bucket_name{};
  std::optional<std::string> scope_name{};
  std::optional<std::string> scope_qualifier{};

  std::optional<couchbase::core::analytics_scan_consistency> scan_consistency{};

  std::map<std::string, couchbase::core::json_string> raw{};
  std::vector<couchbase::core::json_string> positional_parameters{};
  std::map<std::string, couchbase::core::json_string> named_parameters{};
  std::optional<std::function<utils::json::stream_control(std::string)>> row_callback{};
  std::optional<std::string> client_context_id{};
  std::optional<std::chrono::milliseconds> timeout{};

  [[nodiscard]] auto encode_to(encoded_request_type& encoded,
                               http_context& context) -> std::error_code;
  [[nodiscard]] auto make_response(error_context::analytics&& ctx,
                                   const encoded_response_type& encoded) const
    -> analytics_response;

  std::string body_str{};
  std::shared_ptr<couchbase::tracing::request_span> parent_span{ nullptr };
};

} // namespace couchbase::core::operations
namespace couchbase::core::io::http_traits
{
template<>
struct supports_parent_span<couchbase::core::operations::analytics_request>
  : public std::true_type {
};

template<>
struct supports_readonly<couchbase::core::operations::analytics_request> : public std::true_type {
};
} // namespace couchbase::core::io::http_traits