/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 *   Copyright 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 "cluster_describe.hxx"

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

#include <tao/json/value.hpp>

namespace couchbase::core::operations::management
{
auto
cluster_describe_request::encode_to(encoded_request_type& encoded,
                                    http_context& /* context */) const -> std::error_code
{
  encoded.method = "GET";
  encoded.path = "/pools/default";
  return {};
}

auto
cluster_describe_request::make_response(error_context::http&& ctx,
                                        const encoded_response_type& encoded) const
  -> cluster_describe_response
{
  cluster_describe_response response{ std::move(ctx) };
  if (!response.ctx.ec && encoded.status_code != 200) {
    response.ctx.ec = extract_common_error_code(encoded.status_code, encoded.body.data());
  }
  if (response.ctx.ec) {
    return response;
  }

  auto payload = utils::json::parse(encoded.body.data());

  if (auto* nodes = payload.find("nodes"); nodes != nullptr && nodes->is_array()) {
    for (auto& node : nodes->get_array()) {
      cluster_describe_response::cluster_info::node entry{};
      entry.hostname = node.at("hostname").get_string();
      entry.otp_node = node.at("otpNode").get_string();
      if (auto* uuid = node.find("nodeUUID"); uuid != nullptr && uuid->is_string()) {
        entry.uuid = uuid->get_string();
      }
      entry.version = node.at("version").get_string();
      entry.os = node.at("os").get_string();
      entry.status = node.at("status").get_string();
      if (auto* services = node.find("services"); services != nullptr && services->is_array()) {
        for (auto& service : services->get_array()) {
          auto& service_string = service.get_string();
          entry.services.emplace_back(service_string);

          if (service_string == "cbas") {
            response.info.services.insert(service_type::analytics);
          } else if (service_string == "fts") {
            response.info.services.insert(service_type::search);
          } else if (service_string == "n1ql") {
            response.info.services.insert(service_type::query);
          } else if (service_string == "kv") {
            response.info.services.insert(service_type::key_value);
          } else if (service_string == "eventing") {
            response.info.services.insert(service_type::eventing);
          }
        }
      }
      response.info.nodes.emplace_back(entry);
    }
  }
  if (auto* buckets = payload.find("bucketNames"); buckets != nullptr && buckets->is_array()) {
    for (auto& node : buckets->get_array()) {
      cluster_describe_response::cluster_info::bucket entry{};
      entry.name = node.at("bucketName").get_string();
      entry.uuid = node.at("uuid").get_string();
      response.info.buckets.emplace_back(entry);
    }
  }

  return response;
}
} // namespace couchbase::core::operations::management