/* -*- 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/key_value_error_context.hxx>

#include "core/io/mcbp_context.hxx"
#include "core/io/retry_context.hxx"
#include "core/protocol/client_request.hxx"
#include "core/protocol/cmd_observe_seqno.hxx"
#include "core/timeout_defaults.hxx"

namespace couchbase::core::impl
{
struct observe_seqno_response {
    key_value_error_context ctx{};
    bool active;
    std::uint16_t partition{};
    std::uint64_t partition_uuid{};
    std::uint64_t last_persisted_sequence_number{};
    std::uint64_t current_sequence_number{};
    std::optional<std::uint64_t> old_partition_uuid{};
    std::optional<std::uint64_t> last_received_sequence_number{};

    [[nodiscard]] bool failed_over() const
    {
        return old_partition_uuid.has_value();
    }
};

struct observe_seqno_request {
    using response_type = observe_seqno_response;
    using encoded_request_type = core::protocol::client_request<core::protocol::observe_seqno_request_body>;
    using encoded_response_type = core::protocol::client_response<core::protocol::observe_seqno_response_body>;

    core::document_id id;
    bool active;
    std::uint64_t partition_uuid;
    std::optional<std::chrono::milliseconds> timeout{};
    std::uint16_t partition{};
    std::uint32_t opaque{};
    io::retry_context<true> retries{};

    [[nodiscard]] std::error_code encode_to(encoded_request_type& encoded, core::mcbp_context&& context);

    [[nodiscard]] observe_seqno_response make_response(key_value_error_context&& ctx, const encoded_response_type& encoded) const;
};
} // namespace couchbase::core::impl