#ifndef QUERY_COLUMN_HPP
#define QUERY_COLUMN_HPP

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

#include "matador/utils/field_attributes.hpp"

#include <any>

namespace matador::sql {

class column {
public:
  explicit column(std::string name)
  : name_(std::move(name))
  , attributes_(utils::null_attributes) {}

  template<typename Type>
  explicit column(std::string name, utils::field_attributes attr = utils::null_attributes)
  : column(std::move(name), data_type_traits<Type>::builtin_type(attr.size()), attr)
  {}
  template<typename Type>
  column(std::string name, const Type &, utils::field_attributes attr = utils::null_attributes)
  : column(std::move(name), data_type_traits<Type>::builtin_type(attr.size()), attr)
  {}
  column(std::string name, data_type_t type, utils::field_attributes attr = utils::null_attributes);
  template<typename Type>
  column(std::string name, std::string ref_table, std::string ref_column, utils::field_attributes attr = utils::null_attributes)
  : column(std::move(name), data_type_traits<Type>::builtin_type(attr.size()), ref_table, ref_column, attr)
  {}
  column(std::string name, data_type_t type, std::string ref_table, std::string ref_column, utils::field_attributes attr = utils::null_attributes);

  [[nodiscard]] const std::string& name() const;
  [[nodiscard]] const utils::field_attributes& attributes() const;
  [[nodiscard]] data_type_t type() const;
  [[nodiscard]] const std::string& ref_table() const;
  [[nodiscard]] const std::string& ref_column() const;

private:
  std::string name_;
  utils::field_attributes attributes_;
  data_type_t type_{};
  any_type value_;
  std::string ref_table_;
  std::string ref_column_;
};

/**
 * User defined literal to have a shortcut creating a column object
 * @param name Name of the column
 * @param len Length of the column name
 * @return A column object with given name
 */
column operator "" _col(const char *name, size_t len);

column make_column(const std::string &name, data_type_t type, utils::field_attributes attr = utils::null_attributes);

template < typename Type >
column make_column(const std::string &name, utils::field_attributes attr = utils::null_attributes)
{
    return make_column(name, data_type_traits<Type>::builtin_type(0), attr);
}
template <>
column make_column<std::string>(const std::string &name, utils::field_attributes attr);

template < typename Type >
column make_pk_column(const std::string &name, size_t size = 0)
{
    return make_column<Type>(name, { size, utils::constraints::PRIMARY_KEY | utils::constraints::NOT_NULL});
}

template <>
column make_pk_column<std::string>(const std::string &name, size_t size);

template < typename Type >
column make_fk_column(const std::string &name, size_t size, const std::string &ref_table, const std::string &ref_column)
{
    return {name, data_type_traits<Type>::builtin_type(size), ref_table, ref_column, { size, utils::constraints::FOREIGN_KEY }};
}

template < typename Type >
[[maybe_unused]] column make_fk_column(const std::string &name, const std::string &ref_table, const std::string &ref_column)
{
    return {name, data_type_traits<Type>::builtin_type(0), ref_table, ref_column, { 0, utils::constraints::FOREIGN_KEY }};
}

template <>
column make_fk_column<std::string>(const std::string &name, size_t size, const std::string &ref_table, const std::string &ref_column);

}
#endif //QUERY_COLUMN_HPP