#pragma once
#include <expected>
#include <functional>
#include <span>
#include "eth.h"
#include "ipv4.h"
#include "span_writer.h"
#include "msgpack.h"
#include "callback_list.h"

struct net_state {
    eth::mac_addr mac;
    ipv4::ip4_addr ip;
};

using encode_fn = std::function<msgpack::result<size_t>(span_writer&)>;
using send_fn = std::function<void(encode_fn)>;

using net_handler = std::function<void(std::span<const uint8_t> payload,
                                       send_fn send)>;

using net_frame_callback = std::function<bool(std::span<const uint8_t> frame)>;

using frame_cb_list = callback_list<net_frame_callback, 16>;
using frame_cb_handle = frame_cb_list::node*;

bool net_init();
const net_state& net_get_state();
void net_set_handler(net_handler handler);
frame_cb_handle net_add_frame_callback(net_frame_callback cb);
void net_remove_frame_callback(frame_cb_handle h);
void net_poll(std::span<uint8_t> tx);
void net_send_raw(std::span<const uint8_t> data);