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#ifndef MO_REGISTER_FILEREGISTERFWD_INCLUDED
#define MO_REGISTER_FILEREGISTERFWD_INCLUDED

class DirectoryRefreshProgress;

namespace MOShared
{

struct DirectoryEntryFileKey
{
  DirectoryEntryFileKey(std::wstring v) : value(std::move(v)), hash(getHash(value)) {}

  bool operator==(const DirectoryEntryFileKey& o) const { return (value == o.value); }

  static std::size_t getHash(const std::wstring& value)
  {
    return std::hash<std::wstring>()(value);
  }

  std::wstring value;
  const std::size_t hash;
};

class DirectoryEntry;
class OriginConnection;
class FileRegister;
class FilesOrigin;
class FileEntry;
struct DirectoryStats;

using FileEntryPtr = boost::shared_ptr<FileEntry>;
using FileIndex    = unsigned int;
using OriginID     = int;

constexpr FileIndex InvalidFileIndex = UINT_MAX;
constexpr OriginID InvalidOriginID   = -1;

// if a file is in an archive, name is the name of the bsa and order
// is the order of the associated plugin in the plugins list
// is a file is not in an archive, archiveName is empty and order is usually
// -1
class DataArchiveOrigin
{
  std::wstring name_;
  int order_         = -1;

public:
  int order() const { return order_; }
  const std::wstring& name() const { return name_; }

  bool isValid() const { return !name_.empty(); }

  DataArchiveOrigin(std::wstring name, int order)
      : name_(std::move(name)), order_(order)
  {}

  DataArchiveOrigin() = default;
};

class FileAlternative
{
  OriginID originID_ = -1;
  DataArchiveOrigin archive_;

public:
  OriginID originID() const { return originID_; }
  const DataArchiveOrigin& archive() const { return archive_; }

  bool isFromArchive() const { return archive_.isValid(); }

  FileAlternative() = default;

  FileAlternative(OriginID originID, DataArchiveOrigin archive)
      : originID_(originID), archive_(std::move(archive))
  {}
};

using AlternativesVector = std::vector<FileAlternative>;

struct DirectoryStats
{
  static constexpr bool EnableInstrumentation = false;

  std::string mod;

  std::chrono::nanoseconds dirTimes;
  std::chrono::nanoseconds fileTimes;
  std::chrono::nanoseconds sortTimes;

  std::chrono::nanoseconds subdirLookupTimes;
  std::chrono::nanoseconds addDirectoryTimes;

  std::chrono::nanoseconds filesLookupTimes;
  std::chrono::nanoseconds addFileTimes;
  std::chrono::nanoseconds addOriginToFileTimes;
  std::chrono::nanoseconds addFileToOriginTimes;
  std::chrono::nanoseconds addFileToRegisterTimes;

  int64_t originExists;
  int64_t originCreate;
  int64_t originsNeededEnabled;

  int64_t subdirExists;
  int64_t subdirCreate;

  int64_t fileExists;
  int64_t fileCreate;
  int64_t filesInsertedInRegister;
  int64_t filesAssignedInRegister;

  DirectoryStats();

  DirectoryStats& operator+=(const DirectoryStats& o);

  static std::string csvHeader();
  std::string toCsv() const;
};

}  // namespace MOShared

#endif  // MO_REGISTER_FILEREGISTERFWD_INCLUDED