#include "matador/object/constraint.hpp"
#include "matador/object/attribute.hpp"

namespace matador::object {
constraint::constraint(std::string name)
: name_(std::move(name)) {}

const std::string & constraint::name() const {
  return name_;
}

const class attribute* constraint::attribute() const {
  if (std::holds_alternative<class attribute*>(attr_)) {
    return std::get<class attribute*>(attr_);
  }

  return nullptr;
}

std::string constraint::column_name() const {
    if (std::holds_alternative<class attribute*>(attr_)) {
        return std::get<class attribute*>(attr_)->name();
    }
    if (std::holds_alternative<std::string>(attr_)) {
        return std::get<std::string>(attr_);
    }

    return "";
}

const object* constraint::owner() const {
  return owner_;
}

bool constraint::is_primary_key_constraint() const {
  return utils::is_constraint_set(options_, utils::constraints::PrimaryKey);
}

bool constraint::is_foreign_key_constraint() const {
  return utils::is_constraint_set(options_, utils::constraints::ForeignKey);
}

bool constraint::is_unique_constraint() const {
  return utils::is_constraint_set(options_, utils::constraints::Unique);
}

const std::string& constraint::ref_table_name() const {
  return ref_table_name_;
}

const std::string& constraint::ref_column_name() const {
  return ref_column_name_;
}

constraint_builder & constraint_builder::constraint(std::string name) {
  constraint_name = std::move(name);
  return *this;
}

constraint_builder & constraint_builder::primary_key(std::string name) {
  column_name = std::move(name);
  options_ |= utils::constraints::PrimaryKey;
  return *this;
}

constraint_builder & constraint_builder::foreign_key(std::string name) {
  column_name = std::move(name);
  options_ |= utils::constraints::ForeignKey;
  return *this;
}

constraint_builder & constraint_builder::references(std::string table, std::string column) {
  ref_table_name = std::move(table);
  ref_column_name = std::move(column);

  return *this;
}

constraint_builder::operator class constraint() const {
  class constraint c;
  c.name_ = constraint_name;
  c.attr_ = column_name;
  c.options_ = options_;
  c.ref_column_name_ = ref_column_name;
  c.ref_table_name_ = ref_table_name;
  return c;
}

constraint_builder constraint(std::string name) {
  constraint_builder builder;
  return builder.constraint(std::move(name));
}
}