/*
 * Copyright (C) 2018 Codership Oy <info@codership.com>
 *
 * This file is part of wsrep-lib.
 *
 * Wsrep-lib is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * Wsrep-lib is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with wsrep-lib.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "db_server_service.hpp"
#include "db_server.hpp"
#include "db_storage_service.hpp"

#include "wsrep/logger.hpp"
#include "wsrep/high_priority_service.hpp"

db::server_service::server_service(db::server& server)
    : server_(server)
{ }

wsrep::storage_service* db::server_service::storage_service(
    wsrep::client_service&)
{
    return new db::storage_service();
}

wsrep::storage_service* db::server_service::storage_service(
    wsrep::high_priority_service&)
{
    return new db::storage_service();
}

void db::server_service::release_storage_service(
    wsrep::storage_service* storage_service)
{
    delete storage_service;
}

wsrep::high_priority_service* db::server_service::streaming_applier_service(
    wsrep::client_service&)
{
    return server_.streaming_applier_service();
}

wsrep::high_priority_service* db::server_service::streaming_applier_service(
    wsrep::high_priority_service&)
{
    return server_.streaming_applier_service();
}

void db::server_service::release_high_priority_service(
    wsrep::high_priority_service *high_priority_service)
{
    delete high_priority_service;
}

bool db::server_service::sst_before_init() const
{
    return true;
}

std::string db::server_service::sst_request()
{
    std::ostringstream os;
    os << server_.server_state().name();
    wsrep::log_info() << "SST request: "
                      << server_.server_state().name();

    return os.str();
}

int db::server_service::start_sst(
    const std::string& request, const wsrep::gtid& gtid, bool bypass)
{
    server_.donate_sst(request, gtid, bypass);
    return 0;
}

void db::server_service::background_rollback(wsrep::unique_lock<wsrep::mutex>&,
                                             wsrep::client_state&)
{
}

void db::server_service::bootstrap()
{
}

void db::server_service::log_message(enum wsrep::log::level level,
                                     const char* message)
{
    wsrep::log(level, server_.server_state().name().c_str()) << message;
}
void db::server_service::log_dummy_write_set(
    wsrep::client_state&, const wsrep::ws_meta& meta)
{
    wsrep::log_info() << "Dummy write set: " << meta.seqno();
}

void db::server_service::log_view(wsrep::high_priority_service*,
                                  const wsrep::view& v)
{
    wsrep::log_info() << "View:\n" << v;
    server_.storage_engine().store_view(v);
}

void db::server_service::recover_streaming_appliers(
    wsrep::client_service&)
{
}

void db::server_service::recover_streaming_appliers(
    wsrep::high_priority_service&)
{
}

wsrep::view db::server_service::get_view(wsrep::client_service&,
                                         const wsrep::id& own_id)
{
    wsrep::view stored_view(server_.storage_engine().get_view());
    int const my_idx(stored_view.member_index(own_id));
    wsrep::view my_view(
        stored_view.state_id(),
        stored_view.view_seqno(),
        stored_view.status(),
        stored_view.capabilities(),
        my_idx,
        stored_view.protocol_version(),
        stored_view.members()
    );
    return my_view;
}

wsrep::gtid db::server_service::get_position(wsrep::client_service&)
{
    return server_.storage_engine().get_position();
}

void db::server_service::set_position(wsrep::client_service&,
                                      const wsrep::gtid& gtid)
{
    return server_.storage_engine().store_position(gtid);
}

void db::server_service::log_state_change(
    enum wsrep::server_state::state prev_state,
    enum wsrep::server_state::state current_state)
{
    server_.log_state_change(prev_state, current_state);
}

int db::server_service::wait_committing_transactions(int)
{
    throw wsrep::not_implemented_error();
}

void db::server_service::debug_sync(const char*)
{

}