#ifndef QUERY_COLUMN_HPP
#define QUERY_COLUMN_HPP

#include <functional>
#include <memory>
#include <string>

namespace matador::sql {

class table;

enum class sql_function_t {
  None,
  Count,
  Avg,
  Sum,
  Min,
  Max
};

class column {
public:
  column(const char *name, const std::string& as = ""); // NOLINT(*-explicit-constructor)
  explicit column(std::string name, std::string as = "");
  column(sql_function_t func, std::string name); // NOLINT(*-explicit-constructor)
  column(const class table &tab, std::string name, std::string as = "");
  column(const std::shared_ptr<table> &t, std::string name, std::string as = "");

  [[nodiscard]] bool equals(const column &x) const;

  column& as(std::string a);

  [[nodiscard]] const std::string& column_name() const;
  [[nodiscard]] std::string full_name() const;
  [[nodiscard]] const std::string& alias_name() const;
  [[nodiscard]] bool is_function() const;
  [[nodiscard]] sql_function_t function() const;
  [[nodiscard]] bool has_alias() const;
  [[nodiscard]] std::string alias() const;
  [[nodiscard]] std::shared_ptr<sql::table> table() const;
  void table(const std::shared_ptr<sql::table>& t);

private:
  std::shared_ptr<sql::table> table_;
  std::string name;
  std::string alias_;
  sql_function_t function_{sql_function_t::None};
};

column operator ""_col(const char *name, size_t len);

}
#endif //QUERY_COLUMN_HPP