/* -*- 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_upsert.hxx"

#include "core/management/search_index_json.hxx"
#include "core/utils/json.hxx"
#include "core/utils/url_codec.hxx"
#include "error_utils.hxx"

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

namespace couchbase::core::operations::management
{
auto
search_index_upsert_request::encode_to(encoded_request_type& encoded,
                                       http_context& /* context */) const -> std::error_code
{
  if (index.name.empty()) {
    return errc::common::invalid_argument;
  }
  encoded.method = "PUT";
  encoded.headers["cache-control"] = "no-cache";
  encoded.headers["content-type"] = "application/json";
  if (bucket_name.has_value() && scope_name.has_value()) {
    encoded.path = fmt::format("/api/bucket/{}/scope/{}/index/{}",
                               utils::string_codec::v2::path_escape(bucket_name.value()),
                               utils::string_codec::v2::path_escape(scope_name.value()),
                               index.name);
  } else {
    encoded.path = fmt::format("/api/index/{}", index.name);
  }
  tao::json::value body{
    { "name", index.name },
    { "type", index.type },
    { "sourceType", index.source_type },
  };
  if (!index.uuid.empty()) {
    body["uuid"] = index.uuid;
  }
  if (!index.params_json.empty()) {
    body["params"] = utils::json::parse(index.params_json);
  }
  if (!index.source_name.empty()) {
    body["sourceName"] = index.source_name;
  }
  if (!index.source_uuid.empty()) {
    body["sourceUUID"] = index.source_uuid;
  }
  if (!index.source_params_json.empty()) {
    body["sourceParams"] = utils::json::parse(index.source_params_json);
  }
  if (!index.plan_params_json.empty()) {
    body["planParams"] = utils::json::parse(index.plan_params_json);
  }
  encoded.body = utils::json::generate(body);
  return {};
}

auto
search_index_upsert_request::make_response(error_context::http&& ctx,
                                           const encoded_response_type& encoded) const
  -> search_index_upsert_response
{
  search_index_upsert_response response{ std::move(ctx) };
  if (!response.ctx.ec) {
    if (encoded.status_code == 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.name = index.name;
        if (auto* name = payload.find("name"); name != nullptr && name->is_string()) {
          response.name = name->get_string();
        }
        if (auto* uuid = payload.find("uuid"); uuid != nullptr && uuid->is_string()) {
          response.uuid = uuid->get_string();
        }
        return response;
      }
    } else if (encoded.status_code == 400) {
      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("index with the same name already exists") != std::string::npos) {
        response.ctx.ec = errc::common::index_exists;
        return response;
      }
      if (response.error.find("num_fts_indexes (active + pending)") != std::string::npos) {
        response.ctx.ec = errc::common::quota_limited;
        return response;
      }
    } else if (encoded.status_code == 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;
    }
    response.ctx.ec = extract_common_error_code(encoded.status_code, encoded.body.data());
  }
  return response;
}
} // namespace couchbase::core::operations::management