// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"

class FArchive;
class FStructuredArchiveSlot;

class FPackageId
{
    static constexpr uint64 InvalidId = 0;
    uint64 Id                         = InvalidId;

    inline explicit FPackageId(uint64 InId): Id(InId) {}

public:
    FPackageId() = default;

    COREUOBJECT_API static FPackageId FromName(const FName& Name);

    inline bool IsValid() const
    {
        return Id != InvalidId;
    }

    inline uint64 Value() const
    {
        check(Id != InvalidId);
        return Id;
    }

    inline uint64 ValueForDebugging() const
    {
        return Id;
    }

    inline bool operator<(FPackageId Other) const
    {
        return Id < Other.Id;
    }

    inline bool operator==(FPackageId Other) const
    {
        return Id == Other.Id;
    }

    inline bool operator!=(FPackageId Other) const
    {
        return Id != Other.Id;
    }

    inline friend uint32 GetTypeHash(const FPackageId& In)
    {
        return uint32(In.Id);
    }

    COREUOBJECT_API friend FArchive& operator<<(FArchive& Ar, FPackageId& Value);

    COREUOBJECT_API friend void operator<<(FStructuredArchiveSlot Slot, FPackageId& Value);
};