#pragma once

#include "RE/B/BSResource_ErrorCode.h"
#include "RE/B/BSResource_Info.h"
#include "RE/M/MemoryManager.h"

namespace RE::BSResource
{
	class __declspec(novtable) StreamBase
	{
	public:
		inline static constexpr auto RTTI = { RTTI::BSResource__StreamBase };
		inline static constexpr auto VTABLE = { VTABLE::BSResource__StreamBase };

		enum : std::uint32_t
		{
			kWritable = 1 << 0,
			kBuffered = 1 << 1,
			kFullReadHint = 1 << 2,
			kUnk3 = 1 << 3,
			kUnk4 = 1 << 4,
			kRefCountBeg = 0x1000,
			kRefCountMask = (std::uint32_t)0xFFFFF000
		};

		StreamBase();
		StreamBase(const StreamBase& a_rhs);
		StreamBase(StreamBase&& a_rhs);
		StreamBase(std::uint32_t a_totalSize, bool writable);
		virtual ~StreamBase() = default;  // 00

		// add
		virtual ErrorCode                   DoOpen() = 0;             // 01
		virtual void                        DoClose() = 0;            // 02
		[[nodiscard]] virtual std::uint64_t DoGetKey() const;         // 03 - { return 0; }
		virtual ErrorCode                   DoGetInfo(Info& a_info);  // 04 - { return ErrorCode::kUnsupported; }

		F4_HEAP_REDEFINE_NEW(StreamBase);

		std::uint32_t      DecRef();
		std::uint32_t      IncRef();
		[[nodiscard]] bool IsWritable() const;

		// members
		std::uint32_t totalSize;  // 08
		std::uint32_t flags;      // 0C
	};
	static_assert(sizeof(StreamBase) == 0x10);
}