#ifndef QUERY_POSTGRES_RESULT_READER_HPP
#define QUERY_POSTGRES_RESULT_READER_HPP

#include <libpq-fe.h>
#include "matador/sql/query_result_reader.hpp"

namespace matador::backends::postgres {

class postgres_result_reader : public sql::query_result_reader
{
public:
  explicit postgres_result_reader(PGresult *result);
  ~postgres_result_reader() override;

  [[nodiscard]] size_t column_count() const override;
  [[nodiscard]] const char *column(size_t index) const override;
  bool fetch() override;

  void read_value(const char *id, size_t index, char &value) override;
  void read_value(const char *id, size_t index, short &value) override;
  void read_value(const char *id, size_t index, int &value) override;
  void read_value(const char *id, size_t index, long &value) override;
  void read_value(const char *id, size_t index, long long int &value) override;
  void read_value(const char *id, size_t index, unsigned char &value) override;
  void read_value(const char *id, size_t index, unsigned short &value) override;
  void read_value(const char *id, size_t index, unsigned int &value) override;
  void read_value(const char *id, size_t index, unsigned long &value) override;
  void read_value(const char *id, size_t index, unsigned long long int &value) override;
  void read_value(const char *id, size_t index, bool &value) override;
  void read_value(const char *id, size_t index, float &value) override;
  void read_value(const char *id, size_t index, double &value) override;
  void read_value(const char *id, size_t index, char *value, size_t s) override;
  void read_value(const char *id, size_t index, std::string &value) override;
  void read_value(const char *id, size_t index, std::string &value, size_t s) override;

private:
  PGresult *result_{};

  size_t row_count_{};
  size_t column_count_{};
  int row_index_{-1};
};

}

#endif //QUERY_POSTGRES_RESULT_READER_HPP