/**
 *    Copyright (C) 2017 MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This program 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 Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the GNU Affero General Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */

#pragma once

#include <memory>
#include <string>

#include "mongo/base/status.h"
#include "mongo/db/keys_collection_client.h"
#include "mongo/s/client/rs_local_client.h"

namespace mongo {

class OperationContext;
class LogicalTime;
class BSONObj;

class KeysCollectionClientDirect : public KeysCollectionClient {
public:
    KeysCollectionClientDirect();
    /**
     * Returns keys for the given purpose and with an expiresAt value greater than newerThanThis.
     */
    StatusWith<std::vector<KeysCollectionDocument>> getNewKeys(
        OperationContext* opCtx, StringData purpose, const LogicalTime& newerThanThis) override;

    /**
    * Directly inserts a key document to the storage
    */
    Status insertNewKey(OperationContext* opCtx, const BSONObj& doc) override;

    /**
     * Returns false if getNewKeys uses readConcern level:local, so the documents returned can be
     * rolled back.
     */
    bool supportsMajorityReads() const final {
        return false;
    }

private:
    StatusWith<Shard::QueryResponse> _query(OperationContext* opCtx,
                                            const ReadPreferenceSetting& readPref,
                                            const repl::ReadConcernLevel& readConcernLevel,
                                            const NamespaceString& nss,
                                            const BSONObj& query,
                                            const BSONObj& sort,
                                            boost::optional<long long> limit);

    Status _insert(OperationContext* opCtx,
                   const std::string& ns,
                   const BSONObj& doc,
                   const WriteConcernOptions& writeConcern);

    RSLocalClient _rsLocalClient;
};
}  // namespace mongo
