#pragma once

#include "cvmmap_streamer/config/runtime_config.hpp"
#include "cvmmap_streamer/core/status.hpp"
#include "cvmmap_streamer/encode/encoded_access_unit.hpp"
#include "cvmmap_streamer/ipc/contracts.hpp"

#include <cstdint>
#include <span>
#include <string_view>
#include <vector>

#include <proxy/proxy.h>

namespace cvmmap_streamer::encode {

struct RawVideoFrame {
	ipc::FrameInfo info{};
	std::uint64_t source_timestamp_ns{0};
	std::size_t row_stride_bytes{0};
	bool force_keyframe{false};
	std::span<const std::uint8_t> bytes{};
};

PRO_DEF_MEM_DISPATCH(MemBackendName, backend_name);
PRO_DEF_MEM_DISPATCH(MemUsingHardware, using_hardware);
PRO_DEF_MEM_DISPATCH(MemInit, init);
PRO_DEF_MEM_DISPATCH(MemStreamInfo, stream_info);
PRO_DEF_MEM_DISPATCH(MemPoll, poll);
PRO_DEF_MEM_DISPATCH(MemPushFrame, push_frame);
PRO_DEF_MEM_DISPATCH(MemDrain, drain);
PRO_DEF_MEM_DISPATCH(MemFlush, flush);
PRO_DEF_MEM_DISPATCH(MemShutdown, shutdown);

struct EncoderBackendFacade : pro::facade_builder
	::add_convention<MemBackendName, std::string_view() const>
	::add_convention<MemUsingHardware, bool() const>
	::add_convention<MemInit, Status(const RuntimeConfig &, const ipc::FrameInfo &)>
	::add_convention<MemStreamInfo, Result<EncodedStreamInfo>() const>
	::add_convention<MemPoll, Status()>
	::add_convention<MemPushFrame, Status(const RawVideoFrame &)>
	::add_convention<MemDrain, Result<std::vector<EncodedAccessUnit>>()> 
	::add_convention<MemFlush, Result<std::vector<EncodedAccessUnit>>()> 
	::add_convention<MemShutdown, void()>
	::build {};

using EncoderBackend = pro::proxy<EncoderBackendFacade>;

[[nodiscard]]
Result<EncoderBackend> make_encoder_backend(const RuntimeConfig &config);

}