#pragma once

#include <iterator>
#include <string>

#include <jvalidate/detail/deref_proxy.h>

namespace jvalidate::adapter::detail {

template <typename It, typename Adapter> class JsonObjectIterator : public It {
public:
  using value_type = std::pair<std::string, Adapter>;
  using reference = std::pair<std::string, Adapter>;
  using pointer = ::jvalidate::detail::DerefProxy<reference>;
  using difference_type = std::ptrdiff_t;
  using iterator_category = std::forward_iterator_tag;

  JsonObjectIterator() = default;
  JsonObjectIterator(It it) : It(it) {}

  reference operator*() const { return {Adapter::key(*this), Adapter(It::operator->())}; }

  pointer operator->() const { return {operator*()}; }

  JsonObjectIterator operator++(int) {
    auto tmp = *this;
    ++*this;
    return tmp;
  }

  JsonObjectIterator & operator++() {
    It::operator++();
    return *this;
  }
};

}