#ifndef QUERY_VALUE_GENERATOR_HPP
#define QUERY_VALUE_GENERATOR_HPP

#include "matador/sql/any_type.hpp"

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

#include <vector>

namespace matador::utils {
enum class cascade_type;
}
namespace matador::sql {

class value_generator
{
private:
  explicit value_generator(std::vector<any_type> &values);

public:
  ~value_generator() = default;

  template < class Type >
  static std::vector<any_type> generate()
  {
    std::vector<any_type> values;
    value_generator gen(values);
    Type obj;
    matador::utils::access::process(gen, obj);
    return std::move(values);
  }

  template<typename ValueType>
  void on_primary_key(const char *, ValueType &x, typename std::enable_if<std::is_integral<ValueType>::value && !std::is_same<bool, ValueType>::value>::type* = 0)
  {
    append(x);
  }
  void on_primary_key(const char *id, std::string &pk, size_t size);
  void on_revision(const char *id, unsigned long long &rev);
  template < class Type >
  void on_attribute(const char *, Type &x, const utils::field_attributes &/*attr*/ = utils::null_attributes)
  {
    append(x);
  }
  void on_attribute(const char *id, char *x, const utils::field_attributes &/*attr*/ = utils::null_attributes);
  void on_attribute(const char *id, std::string &x, const utils::field_attributes &/*attr*/ = utils::null_attributes);
  void on_belongs_to(const char *id, utils::identifiable &x, utils::cascade_type);
  void on_has_one(const char *id, utils::identifiable &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) {}

private:
  template<typename Type>
  void append(Type &value)
  {
    values_.emplace_back(value);
  }

private:
  std::vector<any_type> &values_;
};

}

#endif //QUERY_VALUE_GENERATOR_HPP