/* -*- 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.
 */

#include "analytics_get_pending_mutations.hxx"

#include "core/utils/json.hxx"
#include "error_utils.hxx"

#include <spdlog/fmt/bundled/core.h>
#include <tao/json/value.hpp>

namespace couchbase::core::operations::management
{
auto
analytics_get_pending_mutations_request::encode_to(encoded_request_type& encoded,
                                                   http_context& /* context */) const
  -> std::error_code
{
  encoded.method = "GET";
  encoded.path = "/analytics/node/agg/stats/remaining";
  return {};
}

auto
analytics_get_pending_mutations_request::make_response(error_context::http&& ctx,
                                                       const encoded_response_type& encoded) const
  -> analytics_get_pending_mutations_response
{
  analytics_get_pending_mutations_response response{ std::move(ctx) };
  if (!response.ctx.ec) {
    tao::json::value payload{};
    try {
      payload = utils::json::parse(encoded.body.data());
    } catch (const tao::pegtl::parse_error&) {
      response.ctx.ec = errc::common::parsing_failure;
      return response;
    }
    if (encoded.status_code == 200) {
      if (payload.is_object()) {
        for (const auto& [dataverse, entry] : payload.get_object()) {
          for (const auto& [dataset, counter] : entry.get_object()) {
            response.stats.try_emplace(fmt::format("{}.{}", dataverse, dataset),
                                       counter.as<std::int64_t>());
          }
        }
      }
      return response;
    }
    response.status = payload.optional<std::string>("status").value_or("unknown");
    if (auto* errors = payload.find("errors"); errors != nullptr && errors->is_array()) {
      for (const auto& error : errors->get_array()) {
        const analytics_problem err{
          error.at("code").as<std::uint32_t>(),
          error.at("msg").get_string(),
        };
        response.errors.emplace_back(err);
      }
    }
    response.ctx.ec = extract_common_error_code(encoded.status_code, encoded.body.data());
  }
  return response;
}
} // namespace couchbase::core::operations::management