/* -*- 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.
 */

#pragma once

#include <couchbase/durability_level.hxx>

#include <map>
#include <optional>
#include <string>
#include <vector>

namespace couchbase::management::cluster
{
enum class bucket_type { unknown, couchbase, memcached, ephemeral };
enum class bucket_compression { unknown, off, active, passive };
enum class bucket_eviction_policy {
    unknown,

    /**
     * During ejection, everything (including key, metadata, and value) will be ejected.
     *
     * Full Ejection reduces the memory overhead requirement, at the cost of performance.
     *
     * This value is only valid for buckets of type COUCHBASE.
     */
    full,

    /**
     * During ejection, only the value will be ejected (key and metadata will remain in memory).
     *
     * Value Ejection needs more system memory, but provides better performance than Full Ejection.
     *
     * This value is only valid for buckets of type COUCHBASE.
     */
    value_only,

    /**
     * Couchbase Server keeps all data until explicitly deleted, but will reject
     * any new data if you reach the quota (dedicated memory) you set for your bucket.
     *
     * This value is only valid for buckets of type EPHEMERAL.
     */
    no_eviction,

    /**
     * When the memory quota is reached, Couchbase Server ejects data that has not been used recently.
     *
     * This value is only valid for buckets of type EPHEMERAL.
     */
    not_recently_used,
};
enum class bucket_conflict_resolution {
    unknown,
    /**
     * Use timestamp conflict resolution.
     *
     * Timestamp-based conflict resolution (often referred to as Last Write Wins, or LWW) uses the document
     * timestamp (stored in the CAS) to resolve conflicts. The timestamps associated with the most recent
     * updates of source and target documents are compared. The document whose update has the more recent
     * timestamp prevails.
     */
    timestamp,

    /**
     * Use sequence number conflict resolution
     *
     * Conflicts can be resolved by referring to documents' sequence numbers. Sequence numbers are maintained
     * per document, and are incremented on every document-update. The sequence numbers of source and
     * target documents are compared; and the document with the higher sequence number prevails.
     */
    sequence_number,

    /**
     * VOLATILE: This API is subject to change at any time.
     *
     * In Couchbase Server 7.1, this feature is only available in "developer-preview" mode. See the UI XDCR settings.
     */
    custom,
};
enum class bucket_storage_backend { unknown, couchstore, magma };

struct bucket_settings {

    std::string name;
    cluster::bucket_type bucket_type{ cluster::bucket_type::unknown };
    std::uint64_t ram_quota_mb{ 0 };
    std::optional<std::uint32_t> max_expiry{};
    bucket_compression compression_mode{ bucket_compression::unknown };
    std::optional<couchbase::durability_level> minimum_durability_level{};
    std::optional<std::uint32_t> num_replicas{};
    std::optional<bool> replica_indexes{};
    std::optional<bool> flush_enabled{};
    bucket_eviction_policy eviction_policy{ bucket_eviction_policy::unknown };
    bucket_conflict_resolution conflict_resolution_type{ bucket_conflict_resolution::unknown };
    std::optional<bool> history_retention_collection_default{};
    std::optional<std::uint32_t> history_retention_bytes;
    std::optional<std::uint32_t> history_retention_duration{};

    /**
     * UNCOMMITTED: This API may change in the future
     */
    bucket_storage_backend storage_backend{ bucket_storage_backend::unknown };
};
} // namespace couchbase::management::cluster