#ifndef FESA_PROPERTIES_SHELL_SECTION_H_
#define FESA_PROPERTIES_SHELL_SECTION_H_

#include <string>

#include "fesa/core/status.h"
#include "fesa/properties/element_property.h"

namespace fesa {

/// @brief Stores a centered constant-thickness shell section assignment.
class ShellSection final : public ElementProperty {
 public:
  /// @brief Creates a validated shell section.
  /// @param thickness Positive thickness in the active consistent unit system.
  /// @param material_index Stable Domain material collection position.
  /// @return A section or a structured model failure.
  static Result<ShellSection> Create(SourceEntityId source_id, std::string name,
                                     double thickness,
                                     EntityIndex material_index,
                                     SourceLocation location);

  /// @brief Constructs an already validated parser-owned shell record.
  /// @note This compatibility seam preserves current consumers until Domain
  /// polymorphic ownership is migrated.
  ShellSection(std::string name, double thickness, EntityIndex material_index,
               SourceLocation location);

  ElementPropertyKind Kind() const noexcept override;
  const SourceEntityId& SourceId() const noexcept override;
  const SourceLocation& Location() const noexcept override;

  /// @brief Returns the source shell-section name.
  const std::string& Name() const noexcept;
  /// @brief Returns centered shell thickness.
  double Thickness() const noexcept;
  /// @brief Returns the stable Domain material collection position.
  EntityIndex MaterialIndex() const noexcept;

  // Public storage preserves the current semantic-record API until Domain
  // ownership migrates in the next approved Step.
  std::string name;
  double thickness;
  EntityIndex material_index;
  SourceLocation location;

 private:
  /// @brief Constructs a candidate whose fields have already been checked.
  ShellSection(SourceEntityId source_id, std::string name, double thickness,
               EntityIndex material_index, SourceLocation location);

  SourceEntityId source_id_;
};

}  // namespace fesa

#endif  // FESA_PROPERTIES_SHELL_SECTION_H_