#ifndef FESA_IO_ABAQUS_DOMAIN_MAPPING_CONTEXT_H_
#define FESA_IO_ABAQUS_DOMAIN_MAPPING_CONTEXT_H_

#include <cstddef>
#include <memory>

#include "fesa/core/status.h"
#include "fesa/io/abaqus/input_syntax.h"
#include "fesa/model/domain.h"

namespace fesa::abaqus_internal {

class DomainBuilder;
class MaterialPropertyMapper;
class SurfaceDefinitionMapper;
class StepDefinitionMapper;
class TopologyMapper;

/// @brief Summarizes syntax-derived candidates before Domain ownership begins.
struct DomainMappingCandidateSummary {
  std::size_t part_count;
  std::size_t node_count;
  std::size_t element_count;
  std::size_t instance_count;
  std::size_t node_set_count;
  std::size_t element_set_count;
  std::size_t material_count;
  std::size_t beam_section_count;
  std::size_t shell_section_count;
  std::size_t model_boundary_count;
  std::size_t step_boundary_count;
  std::size_t step_load_count;
  bool has_static_step;
};

/// @brief Owns uncommitted Abaqus mapping candidates shared by private stages.
/// @note The ParsedInput reference must outlive this context and all stages.
class DomainMappingContext {
 public:
  /// @brief Starts an empty mapping candidate for one parsed input.
  explicit DomainMappingContext(const ParsedInput& input);
  ~DomainMappingContext();

  DomainMappingContext(const DomainMappingContext&) = delete;
  DomainMappingContext& operator=(const DomainMappingContext&) = delete;
  DomainMappingContext(DomainMappingContext&&) = delete;
  DomainMappingContext& operator=(DomainMappingContext&&) = delete;

  /// @brief Reports stable raw candidate counts for component verification.
  DomainMappingCandidateSummary CandidateSummary() const noexcept;

 private:
  class Impl;

  friend class DomainBuilder;
  friend class MaterialPropertyMapper;
  friend class SurfaceDefinitionMapper;
  friend class StepDefinitionMapper;
  friend class TopologyMapper;

  /// @brief Parses syntax into uncommitted topology and semantic candidates.
  Status ParseSyntax();

  /// @brief Validates and projects material and property candidates.
  Status FinalizeMaterialProperties();

  /// @brief Expands identity instances and stable topology candidates.
  Status FinalizeTopology();

  /// @brief Resolves assembly-level element surfaces after topology expansion.
  Status FinalizeElementSurfaces();

  /// @brief Resolves the sole static step against finalized source targets.
  Status FinalizeStep();

  /// @brief Atomically transfers a complete candidate into Domain ownership.
  Result<Domain> Commit();

  std::unique_ptr<Impl> impl_;
};

}  // namespace fesa::abaqus_internal

#endif  // FESA_IO_ABAQUS_DOMAIN_MAPPING_CONTEXT_H_