/**
 *    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 "mongo/db/auth/auth_name.h"

namespace mongo {

class UserName : public AuthName<UserName> {
public:
    static constexpr auto kName = "UserName"_sd;
    static constexpr auto kFieldName = "user"_sd;

    using AuthName::AuthName;

    const std::string& getUser() const {
        return getName();
    }
};

using UserNameIterator = AuthNameIterator<UserName>;
template <typename Container>
using UserNameContainerIteratorImpl = AuthNameContainerIteratorImpl<Container, UserName>;

template <typename ContainerIterator>
UserNameIterator makeUserNameIterator(const ContainerIterator& begin,
                                      const ContainerIterator& end) {
    return UserNameIterator(
        std::make_unique<UserNameContainerIteratorImpl<ContainerIterator>>(begin, end));
}

template <typename Container>
UserNameIterator makeUserNameIteratorForContainer(const Container& container) {
    return makeUserNameIterator(container.begin(), container.end());
}

template <typename Container>
Container userNameIteratorToContainer(UserNameIterator it) {
    Container container;
    while (it.more()) {
        container.emplace_back(it.next());
    }
    return container;
}

}  // namespace mongo