/* -*- 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 "search_index_get_documents_count.hxx"

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

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

namespace couchbase::core::operations::management
{
auto
search_index_get_documents_count_request::encode_to(encoded_request_type& encoded,
                                                    http_context& /* context */) const
  -> std::error_code
{
  encoded.method = "GET";
  if (bucket_name.has_value() && scope_name.has_value()) {
    encoded.path = fmt::format("/api/bucket/{}/scope/{}/index/{}/count",
                               bucket_name.value(),
                               scope_name.value(),
                               index_name);
  } else {
    encoded.path = fmt::format("/api/index/{}/count", index_name);
  }
  return {};
}

auto
search_index_get_documents_count_request::make_response(error_context::http&& ctx,
                                                        const encoded_response_type& encoded) const
  -> search_index_get_documents_count_response
{
  search_index_get_documents_count_response response{ std::move(ctx) };
  if (!response.ctx.ec) {
    switch (encoded.status_code) {
      case 200: {
        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;
        }
        response.status = payload.at("status").get_string();
        if (response.status == "ok") {
          response.count = payload.at("count").get_unsigned();
          return response;
        }
      } break;
      case 404: {
        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;
        }
        response.status = payload.at("status").get_string();
        response.error = payload.at("error").get_string();
        response.ctx.ec = errc::common::feature_not_available;
        return response;
      }
      case 400:
      case 500: {
        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;
        }
        response.status = payload.at("status").get_string();
        response.error = payload.at("error").get_string();
        if (response.error.find("index not found") != std::string::npos) {
          response.ctx.ec = errc::common::index_not_found;
          return response;
        }
        if (response.error.find("no planPIndexes for indexName") != std::string::npos) {
          response.ctx.ec = errc::search::index_not_ready;
          return response;
        }
      } break;
      default:
        break;
    }
    response.ctx.ec = extract_common_error_code(encoded.status_code, encoded.body.data());
  }
  return response;
}
} // namespace couchbase::core::operations::management