#ifndef QUERY_QUERY_RESULT_IMPL_HPP
#define QUERY_QUERY_RESULT_IMPL_HPP

#include "matador/utils/access.hpp"
#include "matador/utils/field_attributes.hpp"

#include "matador/sql/any_type.hpp"
#include "matador/sql/record.hpp"
#include "matador/sql/types.hpp"

#include <string>

namespace matador::sql {

class query_result_impl
{
public:
  virtual ~query_result_impl() = default;

  virtual size_t column_count() const = 0;

  virtual void read_value(const char *id, size_t index, char &value) = 0;
  virtual void read_value(const char *id, size_t index, short &value) = 0;
  virtual void read_value(const char *id, size_t index, int &value) = 0;
  virtual void read_value(const char *id, size_t index, long &value) = 0;
  virtual void read_value(const char *id, size_t index, long long &value) = 0;
  virtual void read_value(const char *id, size_t index, unsigned char &value) = 0;
  virtual void read_value(const char *id, size_t index, unsigned short &value) = 0;
  virtual void read_value(const char *id, size_t index, unsigned int &value) = 0;
  virtual void read_value(const char *id, size_t index, unsigned long &value) = 0;
  virtual void read_value(const char *id, size_t index, unsigned long long &value) = 0;
  virtual void read_value(const char *id, size_t index, bool &value) = 0;
  virtual void read_value(const char *id, size_t index, float &value) = 0;
  virtual void read_value(const char *id, size_t index, double &value) = 0;
//  virtual void read_value(const char *id, size_t index, matador::time &value) = 0;
//  virtual void read_value(const char *id, size_t index, matador::date &value) = 0;
  virtual void read_value(const char *id, size_t index, char *value, size_t s) = 0;
  virtual void read_value(const char *id, size_t index, std::string &value) = 0;
  virtual void read_value(const char *id, size_t index, std::string &value, size_t s) = 0;
  virtual void read_value(const char *id, size_t index, any_type &value, data_type_t type, size_t size) = 0;

  template<typename ValueType>
  void on_primary_key(const char *id, ValueType &value, typename std::enable_if<std::is_integral<ValueType>::value && !std::is_same<bool, ValueType>::value>::type* = 0)
  {
    read_value(id, column_index_++, value);
  }
  void on_primary_key(const char *id, std::string &value, size_t size);
  void on_revision(const char *id, unsigned long long &rev);

  template < class Type >
  void on_attribute(const char *id, Type &x, const utils::field_attributes &/*attr*/ = utils::null_attributes)
  {
    read_value(id, column_index_++, x);
  }
  void on_attribute(const char *id, char *value, const utils::field_attributes &attr = utils::null_attributes);
  void on_attribute(const char *id, std::string &value, const utils::field_attributes &attr = utils::null_attributes);
  void on_attribute(const char *id, any_type &value, data_type_t type, const utils::field_attributes &attr = utils::null_attributes);

  template < class Pointer >
  void on_belongs_to(const char *id, Pointer &x, utils::cascade_type) {}
  template < class Pointer >
  void on_has_one(const char *id, Pointer &x, utils::cascade_type) {}

  template<class ContainerType>
  void on_has_many(const char *, ContainerType &, const char *, const char *, utils::cascade_type) {}
  template<class ContainerType>
  void on_has_many(const char *, ContainerType &, utils::cascade_type) {}

  template<class Type>
  void bind(const Type &) {}

  template<class Type>
  bool fetch(Type &obj)
  {
    if (!fetch()) {
      return false;
    }
    matador::utils::access::process(*this, obj);
    return true;
  }

  [[nodiscard]] virtual const char* column(size_t index) const = 0;
  [[nodiscard]] virtual bool fetch() = 0;

  const record& prototype() const;

protected:
  explicit query_result_impl(record prototype);

protected:
  size_t column_index_ = 0;
  record prototype_;
};

}

#endif //QUERY_QUERY_RESULT_IMPL_HPP