// Copyright (c) 2022, ETH Zurich and UNC Chapel Hill.
// All rights reserved.
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//     * Redistributions of source code must retain the above copyright
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// Author: Johannes L. Schoenberger (jsch-at-demuc-dot-de)

#ifndef COLMAP_SRC_UTIL_OPTION_MANAGER_H_
#define COLMAP_SRC_UTIL_OPTION_MANAGER_H_

#include <memory>

#include <boost/program_options.hpp>

#include "util/logging.h"

namespace colmap {

struct ImageReaderOptions;
struct SiftExtractionOptions;
struct SiftMatchingOptions;
struct ExhaustiveMatchingOptions;
struct SequentialMatchingOptions;
struct VocabTreeMatchingOptions;
struct SpatialMatchingOptions;
struct TransitiveMatchingOptions;
struct ImagePairsMatchingOptions;
struct BundleAdjustmentOptions;
struct IncrementalMapperOptions;
struct RenderOptions;

namespace mvs {
struct PatchMatchOptions;
struct StereoFusionOptions;
struct PoissonMeshingOptions;
struct DelaunayMeshingOptions;
}  // namespace mvs

class OptionManager {
 public:
  OptionManager(bool add_project_options = true);

  // Create "optimal" set of options for different reconstruction scenarios.
  // Note that the existing options are modified, so if your parameters are
  // already low quality, they will be further modified.
  void ModifyForIndividualData();
  void ModifyForVideoData();
  void ModifyForInternetData();

  // Create "optimal" set of options for different quality settings.
  // Note that the existing options are modified, so if your parameters are
  // already low quality, they will be further degraded.
  void ModifyForLowQuality();
  void ModifyForMediumQuality();
  void ModifyForHighQuality();
  void ModifyForExtremeQuality();

  void AddAllOptions();
  void AddLogOptions();
  void AddRandomOptions();
  void AddDatabaseOptions();
  void AddImageOptions();
  void AddExtractionOptions();
  void AddMatchingOptions();
  void AddExhaustiveMatchingOptions();
  void AddSequentialMatchingOptions();
  void AddVocabTreeMatchingOptions();
  void AddSpatialMatchingOptions();
  void AddTransitiveMatchingOptions();
  void AddImagePairsMatchingOptions();
  void AddBundleAdjustmentOptions();
  void AddMapperOptions();
  void AddPatchMatchStereoOptions();
  void AddStereoFusionOptions();
  void AddPoissonMeshingOptions();
  void AddDelaunayMeshingOptions();
  void AddRenderOptions();

  template <typename T>
  void AddRequiredOption(const std::string& name, T* option,
                         const std::string& help_text = "");
  template <typename T>
  void AddDefaultOption(const std::string& name, T* option,
                        const std::string& help_text = "");

  void Reset();
  void ResetOptions(const bool reset_paths);

  bool Check();

  void Parse(const int argc, char** argv);
  bool Read(const std::string& path);
  bool ReRead(const std::string& path);
  void Write(const std::string& path) const;

  std::shared_ptr<std::string> project_path;
  std::shared_ptr<std::string> database_path;
  std::shared_ptr<std::string> image_path;

  std::shared_ptr<ImageReaderOptions> image_reader;
  std::shared_ptr<SiftExtractionOptions> sift_extraction;

  std::shared_ptr<SiftMatchingOptions> sift_matching;
  std::shared_ptr<ExhaustiveMatchingOptions> exhaustive_matching;
  std::shared_ptr<SequentialMatchingOptions> sequential_matching;
  std::shared_ptr<VocabTreeMatchingOptions> vocab_tree_matching;
  std::shared_ptr<SpatialMatchingOptions> spatial_matching;
  std::shared_ptr<TransitiveMatchingOptions> transitive_matching;
  std::shared_ptr<ImagePairsMatchingOptions> image_pairs_matching;

  std::shared_ptr<BundleAdjustmentOptions> bundle_adjustment;
  std::shared_ptr<IncrementalMapperOptions> mapper;

  std::shared_ptr<mvs::PatchMatchOptions> patch_match_stereo;
  std::shared_ptr<mvs::StereoFusionOptions> stereo_fusion;
  std::shared_ptr<mvs::PoissonMeshingOptions> poisson_meshing;
  std::shared_ptr<mvs::DelaunayMeshingOptions> delaunay_meshing;

  std::shared_ptr<RenderOptions> render;

 private:
  template <typename T>
  void AddAndRegisterRequiredOption(const std::string& name, T* option,
                                    const std::string& help_text = "");
  template <typename T>
  void AddAndRegisterDefaultOption(const std::string& name, T* option,
                                   const std::string& help_text = "");

  template <typename T>
  void RegisterOption(const std::string& name, const T* option);

  std::shared_ptr<boost::program_options::options_description> desc_;

  std::vector<std::pair<std::string, const bool*>> options_bool_;
  std::vector<std::pair<std::string, const int*>> options_int_;
  std::vector<std::pair<std::string, const double*>> options_double_;
  std::vector<std::pair<std::string, const std::string*>> options_string_;

  bool added_log_options_;
  bool added_random_options_;
  bool added_database_options_;
  bool added_image_options_;
  bool added_extraction_options_;
  bool added_match_options_;
  bool added_exhaustive_match_options_;
  bool added_sequential_match_options_;
  bool added_vocab_tree_match_options_;
  bool added_spatial_match_options_;
  bool added_transitive_match_options_;
  bool added_image_pairs_match_options_;
  bool added_ba_options_;
  bool added_mapper_options_;
  bool added_patch_match_stereo_options_;
  bool added_stereo_fusion_options_;
  bool added_poisson_meshing_options_;
  bool added_delaunay_meshing_options_;
  bool added_render_options_;
};

////////////////////////////////////////////////////////////////////////////////
// Implementation
////////////////////////////////////////////////////////////////////////////////

template <typename T>
void OptionManager::AddRequiredOption(const std::string& name, T* option,
                                      const std::string& help_text) {
  desc_->add_options()(name.c_str(),
                       boost::program_options::value<T>(option)->required(),
                       help_text.c_str());
}

template <typename T>
void OptionManager::AddDefaultOption(const std::string& name, T* option,
                                     const std::string& help_text) {
  desc_->add_options()(
      name.c_str(),
      boost::program_options::value<T>(option)->default_value(*option),
      help_text.c_str());
}

template <typename T>
void OptionManager::AddAndRegisterRequiredOption(const std::string& name,
                                                 T* option,
                                                 const std::string& help_text) {
  desc_->add_options()(name.c_str(),
                       boost::program_options::value<T>(option)->required(),
                       help_text.c_str());
  RegisterOption(name, option);
}

template <typename T>
void OptionManager::AddAndRegisterDefaultOption(const std::string& name,
                                                T* option,
                                                const std::string& help_text) {
  desc_->add_options()(
      name.c_str(),
      boost::program_options::value<T>(option)->default_value(*option),
      help_text.c_str());
  RegisterOption(name, option);
}

template <typename T>
void OptionManager::RegisterOption(const std::string& name, const T* option) {
  if (std::is_same<T, bool>::value) {
    options_bool_.emplace_back(name, reinterpret_cast<const bool*>(option));
  } else if (std::is_same<T, int>::value) {
    options_int_.emplace_back(name, reinterpret_cast<const int*>(option));
  } else if (std::is_same<T, double>::value) {
    options_double_.emplace_back(name, reinterpret_cast<const double*>(option));
  } else if (std::is_same<T, std::string>::value) {
    options_string_.emplace_back(name,
                                 reinterpret_cast<const std::string*>(option));
  } else {
    LOG(FATAL) << "Unsupported option type";
  }
}

}  // namespace colmap

#endif  // COLMAP_SRC_UTIL_OPTION_MANAGER_H_