/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 *   Copyright 2020-Present 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.
 */

#pragma once

#include <couchbase/common_options.hxx>
#include <couchbase/error_codes.hxx>
#include <couchbase/manager_error_context.hxx>

#include <optional>
#include <string>

namespace couchbase
{
class create_query_index_options : public common_options<create_query_index_options>
{
  public:
    /**
     * Set flag to ignore error if the index already exists
     *
     * The default is to not ignore the error.
     *
     * @param ignore_if_exists  if true, we don't return an error if the index already exists
     * @return reference to this object, for use in chaining.
     *
     * @since 1.0.0
     * @committed
     */
    auto ignore_if_exists(bool ignore_if_exists) -> create_query_index_options&
    {
        ignore_if_exists_ = ignore_if_exists;
        return self();
    }
    /**
     * Set flag to defer building of the index
     *
     * The default is false, meaning start building the index immediately.
     *
     * @param deferred
     * @return reference to this object, for use in chaining.
     *
     * @since 1.0.0
     * @committed
     */
    auto build_deferred(bool deferred) -> create_query_index_options&
    {
        deferred_ = deferred;
        return self();
    }

    /**
     * Set the number of replicas the index will have.
     *
     *
     * @param num_replicas
     * @return reference to this object, for use in chaining.
     *
     * @since 1.0.0
     * @committed
     */
    auto num_replicas(uint8_t num_replicas) -> create_query_index_options&
    {
        num_replicas_ = num_replicas;
        return self();
    }
    /**
     * Supply an extra condition on this index.
     *
     * This is the contents of the WHERE clause when creating the index.
     *
     * @param condition
     * @return reference to this object, for use in chaining.
     */
    auto condition(std::string condition) -> create_query_index_options&
    {
        condition_.emplace(std::move(condition));
        return self();
    }

    /**
     * Immutable value object representing consistent options.
     *
     * @since 1.0.0
     * @internal
     */
    struct built : public common_options<create_query_index_options>::built {
        bool ignore_if_exists{};
        bool deferred{};
        std::optional<std::string> condition{};
        std::optional<uint8_t> num_replicas{};
    };

    /**
     * Validates options and returns them as an immutable value.
     *
     * @return consistent options as an immutable value
     *
     * @exception std::system_error with code errc::common::invalid_argument if the options are not valid
     *
     * @since 1.0.0
     * @internal
     */
    [[nodiscard]] auto build() const -> built
    {
        return { build_common_options(), ignore_if_exists_, deferred_, condition_, num_replicas_ };
    }

  private:
    std::optional<std::string> scope_name_{};
    std::optional<std::string> collection_name_{};
    bool ignore_if_exists_{ false };
    bool deferred_{ false };
    std::optional<uint8_t> num_replicas_{};
    std::optional<std::string> condition_{};
};

/**
 * The signature for the handler of the @ref query_index_manager#get_all_indexes() operation
 *
 * @since 1.0.0
 * @uncommitted
 */

using create_query_index_handler = std::function<void(couchbase::manager_error_context)>;

#ifndef COUCHBASE_CXX_CLIENT_DOXYGEN
namespace core
{
class cluster;
class query_context;
namespace impl
{

/**
 * @since 1.0.0
 * @internal
 */
void
initiate_create_query_index(std::shared_ptr<couchbase::core::cluster> core,
                            std::string bucket_name,
                            std::string index_name,
                            std::vector<std::string> fields,
                            couchbase::create_query_index_options::built options,
                            create_query_index_handler&& handler);
void
initiate_create_query_index(std::shared_ptr<couchbase::core::cluster> core,
                            std::string bucket_name,
                            std::string index_name,
                            std::vector<std::string> fields,
                            couchbase::create_query_index_options::built options,
                            query_context query_ctx,
                            std::string collection_name,
                            create_query_index_handler&& handler);

#endif
} // namespace impl
} // namespace core
} // namespace couchbase