text: /* -*- 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 <couchbase/operations/management/query_index_create.hxx>
  
  #include <couchbase/errors.hxx>
  #include <couchbase/operations/management/error_utils.hxx>
  #include <couchbase/utils/join_strings.hxx>
  #include <couchbase/utils/json.hxx>
  
  namespace couchbase::operations::management
  {
  std::error_code
  query_index_create_request::encode_to(encoded_request_type& encoded, http_context&) const
  {
      encoded.headers["content-type"] = "application/json";
      tao::json::value with{};
      if (deferred) {
          with["defer_build"] = *deferred;
      }
      if (num_replicas) {
          with["num_replica"] = *num_replicas; /* no 's' in key name */
      }
      std::string where_clause{};
      if (condition) {
          where_clause = fmt::format("WHERE {}", *condition);
      }
      std::string with_clause{};
      if (with) {
          with_clause = fmt::format("WITH {}", utils::json::generate(with));
      }
      std::string keyspace = fmt::format("{}:`{}`", namespace_id, bucket_name);
      if (!scope_name.empty()) {
          keyspace += ".`" + scope_name + "`";
      }
      if (!collection_name.empty()) {
          keyspace += ".`" + collection_name + "`";
      }
      tao::json::value body{ { "statement",
                               is_primary ? fmt::format(R"(CREATE PRIMARY INDEX {} ON {} USING GSI {})",
                                                        index_name.empty() ? "" : fmt::format("`{}`", index_name),
                                                        keyspace,
                                                        with_clause)
                                          : fmt::format(R"(CREATE INDEX `{}` ON {}({}) {} USING GSI {})",
                                                        index_name,
                                                        keyspace,
                                                        utils::join_strings(fields, ", "),
                                                        where_clause,
                                                        with_clause) },
                             { "client_context_id", client_context_id } };
      encoded.method = "POST";
      encoded.path = "/query/service";
      encoded.body = utils::json::generate(body);
      return {};
  }
  
  query_index_create_response
  query_index_create_request::make_response(error_context::http&& ctx, const encoded_response_type& encoded) const
  {
      query_index_create_response response{ std::move(ctx) };
      if (!response.ctx.ec) {
          tao::json::value payload{};
          try {
              payload = utils::json::parse(encoded.body);
          } catch (const tao::pegtl::parse_error&) {
              response.ctx.ec = error::common_errc::parsing_failure;
              return response;
          }
          response.status = payload.at("status").get_string();
  
          if (response.status != "success") {
              bool index_already_exists = false;
              bool bucket_not_found = false;
              std::optional<std::error_code> common_ec{};
              for (const auto& entry : payload.at("errors").get_array()) {
                  query_index_create_response::query_problem error;
                  error.code = entry.at("code").get_unsigned();
                  error.message = entry.at("msg").get_string();
                  switch (error.code) {
                      case 5000: /* IKey: "Internal Error" */
                          if (error.message.find(" already exists") != std::string::npos) {
                              index_already_exists = true;
                          }
                          if (error.message.find("Bucket Not Found") != std::string::npos) {
                              bucket_not_found = true;
                          }
                          break;
  
                      case 12003: /* IKey: "datastore.couchbase.keyspace_not_found" */
                          bucket_not_found = true;
                          break;
  
                      case 4300: /* IKey: "plan.new_index_already_exists" */
                          index_already_exists = true;
                          break;
  
                      default:
                          common_ec = management::extract_common_query_error_code(error.code, error.message);
                          break;
                  }
                  response.errors.emplace_back(error);
              }
              if (index_already_exists) {
                  if (!ignore_if_exists) {
                      response.ctx.ec = error::common_errc::index_exists;
                  }
              } else if (bucket_not_found) {
                  response.ctx.ec = error::common_errc::bucket_not_found;
              } else if (common_ec) {
                  response.ctx.ec = common_ec.value();
              } else if (!response.errors.empty()) {
                  response.ctx.ec = extract_common_error_code(encoded.status_code, encoded.body);
              }
          }
      }
      return response;
  }
  } // namespace couchbase::operations::management
  