#ifndef FESA_MODEL_DOMAIN_H_
#define FESA_MODEL_DOMAIN_H_

#include <filesystem>
#include <string>
#include <vector>

#include "fesa/core/status.h"
#include "fesa/model/model_types.h"

namespace fesa {

/// @brief Owns the complete immutable semantic model definition.
/// @note Collection positions remain stable internal indices after
/// construction.
class Domain {
 public:
  /// @brief Creates a Domain that owns a copy or moved model definition.
  /// @param definition Complete parsed semantic records in declaration order.
  /// @return A successful owning Domain.
  static Result<Domain> Create(ModelDefinition definition);

  /// @brief Returns nodes in stable declaration order.
  const std::vector<Node>& Nodes() const noexcept;

  /// @brief Returns Euler beam definitions in stable declaration order.
  const std::vector<EulerBeam3DDefinition>& Elements() const noexcept;

  /// @brief Returns MITC4 shell definitions in stable declaration order.
  const std::vector<Mitc4ShellDefinition>& ShellElements() const noexcept;

  /// @brief Returns materials in stable declaration order.
  const std::vector<LinearElasticMaterial>& Materials() const noexcept;

  /// @brief Returns beam sections in stable declaration order.
  const std::vector<GeneralBeamSection>& Sections() const noexcept;

  /// @brief Returns shell sections in stable declaration order.
  const std::vector<ShellSection>& ShellSections() const noexcept;

  /// @brief Returns preprocessed shell-node frames in stable node order.
  const std::vector<ShellNodeInitialFrame>& ShellNodeInitialFrames()
      const noexcept;

  /// @brief Returns node sets in stable declaration order.
  const std::vector<NodeSet>& NodeSets() const noexcept;

  /// @brief Returns element sets in stable declaration order.
  const std::vector<ElementSet>& ElementSets() const noexcept;

  /// @brief Returns static steps in stable declaration order.
  const std::vector<StaticStepDefinition>& Steps() const noexcept;

  /// @brief Returns sorted nonfatal mapping diagnostics.
  const std::vector<Diagnostic>& Warnings() const noexcept;

  /// @brief Returns the source input path associated with this model.
  const std::filesystem::path& SourcePath() const noexcept;

  /// @brief Returns the deterministic source-content identity.
  const std::string& SourceContentIdentity() const noexcept;

 private:
  /// @brief Takes ownership of an already constructed model definition.
  explicit Domain(ModelDefinition definition);

  ModelDefinition definition_;
};

}  // namespace fesa

#endif  // FESA_MODEL_DOMAIN_H_