// SPDX-FileCopyrightText: Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
// SPDX-License-Identifier: GPL-3.0-or-later

#pragma once

#include <memory>
#include <shared_mutex>
#include <optional>
#include <unordered_map>

#include <unistd.h>

namespace malcontent {

class Resolver;

class UserPolicy {
public:
    UserPolicy() = default;
    UserPolicy(const UserPolicy&) = delete;
    UserPolicy(UserPolicy&&) = delete;
    ~UserPolicy() noexcept = default;

    auto resolver(std::optional<uid_t> uid = {}) const -> std::shared_ptr<Resolver>;

private:
    mutable std::unordered_map<uid_t, std::shared_ptr<Resolver>> _resolver_cache;
    mutable std::shared_mutex _cache_mutex;
};

} // ~ namespace malcontent