#pragma once

#include <functional>
#include <string>
#include <thread>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

#include "hecl/Database.hpp"
#include "hecl/Blender/Token.hpp"
#include "Runtime/RetroTypes.hpp"

namespace nod {
class DiscBase;
class Node;
} // namespace nod

namespace athena::io {
class FileWriter;
class YAMLDocWriter;
} // namespace athena::io

namespace DataSpec {
enum class ERegion;
enum class EGame;
ERegion getCurrentRegion();
bool isCurrentSpecWii();

struct SpecBase : hecl::Database::IDataSpec {
  /* HECL Adaptors */
  void setThreadProject() override;
  bool canExtract(const ExtractPassInfo& info, std::vector<ExtractReport>& reps) override;
  void doExtract(const ExtractPassInfo& info, const hecl::MultiProgressPrinter& progress) override;

  bool canCook(const hecl::ProjectPath& path, hecl::blender::Token& btok) override;
  const hecl::Database::DataSpecEntry* overrideDataSpec(const hecl::ProjectPath& path,
                                                        const hecl::Database::DataSpecEntry* oldEntry) const override;
  void doCook(const hecl::ProjectPath& path, const hecl::ProjectPath& cookedPath, bool fast, hecl::blender::Token& btok,
              FCookProgress progress) override;

  bool canPackage(const hecl::ProjectPath& path) override;
  void doPackage(const hecl::ProjectPath& path, const hecl::Database::DataSpecEntry* entry, bool fast,
                 hecl::blender::Token& btok, const hecl::MultiProgressPrinter& progress,
                 hecl::ClientProcess* cp) override;

  void interruptCook() override;

  /* Extract handlers */
  virtual bool checkStandaloneID(const char* id) const = 0;
  virtual bool checkFromStandaloneDisc(nod::DiscBase& disc, const hecl::SystemString& regstr,
                                       const std::vector<hecl::SystemString>& args,
                                       std::vector<ExtractReport>& reps) = 0;
  virtual bool checkFromTrilogyDisc(nod::DiscBase& disc, const hecl::SystemString& regstr,
                                    const std::vector<hecl::SystemString>& args, std::vector<ExtractReport>& reps) = 0;
  virtual bool extractFromDisc(nod::DiscBase& disc, bool force, const hecl::MultiProgressPrinter& progress) = 0;

  /* Convert path to object tag */
  virtual metaforce::SObjectTag buildTagFromPath(const hecl::ProjectPath& path) const = 0;

  /* Even if PC spec is being cooked, this will return the vanilla GCN spec */
  virtual const hecl::Database::DataSpecEntry& getOriginalSpec() const = 0;

  /* This will return a pseudo-spec for unmodified resources */
  virtual const hecl::Database::DataSpecEntry& getUnmodifiedSpec() const = 0;

  /* Basic path check (game directory matching) */
  virtual bool checkPathPrefix(const hecl::ProjectPath& path) const = 0;

  /* Pre-cook handlers */
  virtual bool validateYAMLDNAType(athena::io::IStreamReader& fp) const = 0;

  std::optional<hecl::blender::World> compileWorldFromDir(const hecl::ProjectPath& dir,
                                                          hecl::blender::Token& btok) const;

  /* Cook handlers */
  using BlendStream = hecl::blender::DataStream;
  using Mesh = hecl::blender::Mesh;
  using Armature = hecl::blender::Armature;
  using ColMesh = hecl::blender::ColMesh;
  using PathMesh = hecl::blender::PathMesh;
  using Light = hecl::blender::Light;
  using Actor = hecl::blender::Actor;

  virtual void cookMesh(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                        hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookColMesh(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                           hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookArmature(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                            hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookPathMesh(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                            hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookActor(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                         hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookArea(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                        hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookWorld(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                         hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookGuiFrame(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds,
                            hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookYAML(const hecl::ProjectPath& out, const hecl::ProjectPath& in, athena::io::IStreamReader& fin,
                        hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookAudioGroup(const hecl::ProjectPath& out, const hecl::ProjectPath& in, FCookProgress progress) = 0;
  virtual void cookSong(const hecl::ProjectPath& out, const hecl::ProjectPath& in, FCookProgress progress) = 0;
  virtual void cookMapArea(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds,
                           hecl::blender::Token& btok, FCookProgress progress) = 0;
  virtual void cookMapUniverse(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds,
                               hecl::blender::Token& btok, FCookProgress progress) = 0;

  /* Dependency flatteners */
  void flattenDependencies(const hecl::ProjectPath& in, std::vector<hecl::ProjectPath>& pathsOut,
                           hecl::blender::Token& btok, int charIdx = -1);
  void flattenDependencies(const class UniqueID32& id, std::vector<hecl::ProjectPath>& pathsOut, int charIdx = -1);
  void flattenDependencies(const class UniqueID64& id, std::vector<hecl::ProjectPath>& pathsOut, int charIdx = -1);
  void flattenDependenciesBlend(const hecl::ProjectPath& in, std::vector<hecl::ProjectPath>& pathsOut,
                                hecl::blender::Token& btok, int charIdx = -1);
  virtual void flattenDependenciesYAML(athena::io::IStreamReader& fin, std::vector<hecl::ProjectPath>& pathsOut) = 0;
  virtual void flattenDependenciesANCSYAML(athena::io::IStreamReader& fin, std::vector<hecl::ProjectPath>& pathsOut,
                                           int charIdx = -1) = 0;

  virtual void buildWorldPakList(const hecl::ProjectPath& worldPath, const hecl::ProjectPath& worldPathCooked,
                                 hecl::blender::Token& btok, athena::io::FileWriter& w,
                                 std::vector<metaforce::SObjectTag>& listOut, atUint64& resTableOffset,
                                 std::unordered_map<metaforce::CAssetId, std::vector<uint8_t>>& mlvlData) {}
  virtual void buildPakList(hecl::blender::Token& btok, athena::io::FileWriter& w,
                            const std::vector<metaforce::SObjectTag>& list,
                            const std::vector<std::pair<metaforce::SObjectTag, std::string>>& nameList,
                            atUint64& resTableOffset) {}
  virtual void writePakFileIndex(athena::io::FileWriter& w, const std::vector<metaforce::SObjectTag>& tags,
                                 const std::vector<std::tuple<size_t, size_t, bool>>& index, atUint64 resTableOffset) {}
  virtual std::pair<std::unique_ptr<uint8_t[]>, size_t> compressPakData(const metaforce::SObjectTag& tag,
                                                                        const uint8_t* data, size_t len) {
    return {};
  }

  const hecl::ProjectPath& getMasterShaderPath() const { return m_masterShader; }

  /* Support functions for resolving paths from IDs */
  virtual hecl::ProjectPath getWorking(class UniqueID32&) { return hecl::ProjectPath(); }
  virtual hecl::ProjectPath getWorking(class UniqueID64&) { return hecl::ProjectPath(); }

  hecl::ProjectPath getCookedPath(const hecl::ProjectPath& working, bool pcTarget) const;

  /* Project accessor */
  hecl::Database::Project& getProject() const { return m_project; }

  /* Extract RandomStatic entropy */
  void extractRandomStaticEntropy(const uint8_t* buf, const hecl::ProjectPath& pakPath);

  /* Tag cache functions */
  metaforce::SObjectTag tagFromPath(const hecl::ProjectPath& path) const;
  hecl::ProjectPath pathFromTag(const metaforce::SObjectTag& tag) const;
  bool waitForTagReady(const metaforce::SObjectTag& tag, const hecl::ProjectPath*& pathOut);
  const metaforce::SObjectTag* getResourceIdByName(std::string_view name) const;
  hecl::FourCC getResourceTypeById(metaforce::CAssetId id) const;
  void enumerateResources(const std::function<bool(const metaforce::SObjectTag&)>& lambda) const;
  void enumerateNamedResources(const std::function<bool(std::string_view, const metaforce::SObjectTag&)>& lambda) const;
  void cancelBackgroundIndex();
  void beginBackgroundIndex();
  bool backgroundIndexRunning() const { return m_backgroundRunning; }
  void waitForIndexComplete() const;

  virtual void getTagListForFile(const char* pakName, std::vector<metaforce::SObjectTag>& out) const {}

  SpecBase(const hecl::Database::DataSpecEntry* specEntry, hecl::Database::Project& project, bool pc);
  ~SpecBase();

protected:
  hecl::Database::Project& m_project;
  bool m_pc;
  hecl::ProjectPath m_masterShader;

  std::unordered_multimap<metaforce::SObjectTag, hecl::ProjectPath> m_tagToPath;
  std::unordered_map<hecl::Hash, metaforce::SObjectTag> m_pathToTag;
  std::unordered_map<std::string, metaforce::SObjectTag> m_catalogNameToTag;
  std::unordered_map<metaforce::SObjectTag, std::unordered_set<std::string>> m_catalogTagToNames;
  void clearTagCache();

  hecl::blender::Token m_backgroundBlender;
  std::thread m_backgroundIndexTh;
  mutable std::mutex m_backgroundIndexMutex;
  bool m_backgroundRunning = false;

  void readCatalog(const hecl::ProjectPath& catalogPath, athena::io::YAMLDocWriter& nameWriter);
  void insertPathTag(athena::io::YAMLDocWriter& cacheWriter, const metaforce::SObjectTag& tag, const hecl::ProjectPath& path,
                     bool dump = true);
  bool addFileToIndex(const hecl::ProjectPath& path, athena::io::YAMLDocWriter& cacheWriter);
  void backgroundIndexRecursiveProc(const hecl::ProjectPath& path, athena::io::YAMLDocWriter& cacheWriter,
                                    athena::io::YAMLDocWriter& nameWriter, int level);
  void backgroundIndexRecursiveCatalogs(const hecl::ProjectPath& path, athena::io::YAMLDocWriter& nameWriter,
                                        int level);
  void backgroundIndexProc();

  void recursiveBuildResourceList(std::vector<metaforce::SObjectTag>& listOut,
                                  std::unordered_set<metaforce::SObjectTag>& addedTags, const hecl::ProjectPath& path,
                                  hecl::blender::Token& btok);
  void copyBuildListData(std::vector<std::tuple<size_t, size_t, bool>>& fileIndex,
                         const std::vector<metaforce::SObjectTag>& buildList, const hecl::Database::DataSpecEntry* entry,
                         bool fast, const hecl::MultiProgressPrinter& progress, athena::io::FileWriter& pakOut,
                         const std::unordered_map<metaforce::CAssetId, std::vector<uint8_t>>& mlvlData);

  std::unique_ptr<nod::DiscBase> m_disc;
  bool m_isWii{};
  bool m_standalone{};
  ERegion m_region;
  EGame m_game;
  std::string m_version;

  void WriteVersionInfo(hecl::Database::Project& project, const hecl::ProjectPath& pakPath);

  static void setCurRegion(ERegion region);
  static void setCurSpecIsWii(bool isWii);
};

bool IsPathAudioGroup(const hecl::ProjectPath& path);

} // namespace DataSpec