#ifndef RFL_TOML_READ_HPP_
#define RFL_TOML_READ_HPP_

#include <istream>
#include <string>
#include <string_view>
#include <toml++/toml.hpp>

#include "../Processors.hpp"
#include "../internal/wrap_in_rfl_array_t.hpp"
#include "Parser.hpp"
#include "Reader.hpp"

namespace rfl::toml {

using InputVarType = typename Reader::InputVarType;

/// Parses an object from a TOML var.
template <class T, class... Ps>
auto read(InputVarType _var) {
  const auto r = Reader();
  using ProcessorsType = Processors<Ps...>;
  static_assert(!ProcessorsType::no_field_names_,
                "The NoFieldNames processor is not supported for BSON, XML, "
                "TOML, or YAML.");
  return Parser<T, ProcessorsType>::read(r, _var);
}

/// Reads a TOML string.
template <class T, class... Ps>
Result<internal::wrap_in_rfl_array_t<T>> read(
    const std::string_view _toml_str) noexcept {
#if TOML_EXCEPTIONS
  try {
    auto table = ::toml::parse(_toml_str);
    return read<T, Ps...>(&table);
  } catch (const std::exception& e) {
    return error(e.what());
  }
#else
  auto result = ::toml::parse(_toml_str);
  if (!result) {
    return error(std::string(result.error().description()));
  }
  return read<T, Ps...>(&result.table());
#endif
}

/// Parses an object from a stringstream.
template <class T, class... Ps>
auto read(std::istream& _stream) {
  const auto toml_str = std::string(std::istreambuf_iterator<char>(_stream),
                                    std::istreambuf_iterator<char>());
  return read<T, Ps...>(toml_str);
}

}  // namespace rfl::toml

#endif