#pragma once

#include <cstdint>
#include <stdexcept>
#include <string>
#include <vector>

#include "secsgem/secs2/item.hpp"

namespace secsgem::secs2 {

class CodecError : public std::runtime_error {
 public:
  using std::runtime_error::runtime_error;
};

// Encode a single item (with all nested children) to its SECS-II byte form.
std::vector<uint8_t> encode(const Item& item);
void encode_into(const Item& item, std::vector<uint8_t>& out);

// Decode exactly one item starting at `pos`, advancing `pos` past it.
Item decode_at(const uint8_t* data, std::size_t len, std::size_t& pos);

// Decode one item that occupies the entire buffer; throws on trailing bytes.
Item decode(const std::vector<uint8_t>& bytes);

// Human-readable SML (SECS Message Language) rendering, single line.
std::string to_sml(const Item& item);

}  // namespace secsgem::secs2