/**
 *    Copyright (C) 2018-present MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the Server Side Public License, version 1,
 *    as published by MongoDB, Inc.
 *
 *    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
 *    Server Side Public License for more details.
 *
 *    You should have received a copy of the Server Side Public License
 *    along with this program. If not, see
 *    <http://www.mongodb.com/licensing/server-side-public-license>.
 *
 *    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 Server Side 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 <utility>

#include "mongo/base/error_codes.h"
#include "mongo/base/status.h"
#include "mongo/base/string_data.h"
#include "mongo/bson/bsonelement.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/db/jsobj.h"

namespace mongo {

/**
 * This class represents the layout and content of the error that occurs while trying
 * to satisfy the write concern after executing runCommand.
 */
class WriteConcernErrorDetail {
public:
    WriteConcernErrorDetail();

    /** Copies all the fields present in 'this' to 'other'. */
    void cloneTo(WriteConcernErrorDetail* other) const;

    //
    // bson serializable interface implementation
    //

    bool isValid(std::string* errMsg) const;
    BSONObj toBSON() const;
    bool parseBSON(const BSONObj& source, std::string* errMsg);
    void clear();
    std::string toString() const;

    //
    // individual field accessors
    //

    void setStatus(Status status) {
        _status = std::move(status);
    }

    Status toStatus() const;

    void setErrInfo(const BSONObj& errInfo);
    bool isErrInfoSet() const;
    const BSONObj& getErrInfo() const;

private:
    // Convention: (M)andatory, (O)ptional

    // (M)  error code and message. Must be set to a not OK status to be valid.
    Status _status = Status::OK();

    // (O)  further details about the write concern error.
    BSONObj _errInfo;
    bool _isErrInfoSet;
};

/**
 * Creates and returns a WriteConcernErrorDetail object from a BSONObj.
 */
std::unique_ptr<WriteConcernErrorDetail> getWriteConcernErrorDetailFromBSONObj(const BSONObj& obj);

/**
 * Constructs a WriteConcernErrorDetail by parsing the given BSONElement.
 */
WriteConcernErrorDetail getWriteConcernErrorDetail(const BSONElement& wcErrorElem);

}  // namespace mongo
