#include <string_view>

#include <book_store/purchase_error.hh>

namespace book_store {
[[nodiscard]] auto
purchase_error::error() const noexcept -> purchase_error_type {
  return this->_error;
}

[[nodiscard]] auto purchase_error::what() const noexcept -> std::string_view {
  switch (this->_error) {
  case person_not_found:
    return "Person not found";
  case book_not_found:
    return "Book not found";
  case not_enough_stock:
    return "Not enough stock";
  }
}
} // namespace book_store