MLBookProc.h

/*
 * Copyright (C) 2026 Yury Bobylev <bobilev_yury@mail.ru>
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
#ifndef MLBOOKPROC_H
#define MLBOOKPROC_H
 
#include <DJVUContext.h>
#include <filesystem>
#include <gcrypt.h>
#include <gpg-error.h>
#include <memory>
#include <mutex>
#include <string>
#include <vector>


class MLBookProc
{
public:
  MLBookProc(const MLBookProc &) = delete;
  MLBookProc(MLBookProc &&) = delete;
 
  MLBookProc &
  operator=(const MLBookProc &)
      = delete;
 
  MLBookProc &
  operator=(MLBookProc &&)
      = delete;
 
  virtual ~MLBookProc();

  static std::shared_ptr<MLBookProc>
  create();

  std::string
  stringToLower(const std::string &str);

  std::string
  getExtension(const std::filesystem::path &p);

  std::string
  getExtension(const std::string &file_name);

  std::vector<std::string>
  getSupportedFileTypes();

  std::vector<std::string>
  getSupportedArchivesTypesUnpacking();

  std::vector<std::string>
  getSupportedArchivesTypesPacking();

  bool
  ifSupportedFile(const std::string &filename);

  bool
  ifSupportedFile(const std::filesystem::path &p);

  void
  libgcryptErrorHandling(const gcry_error_t &err);

  template <typename T>
  T
  randomNumber();

  std::filesystem::path
  tempDirPath();

  std::filesystem::path
  randomFileName();

  std::string
  timeToDate(const time_t &tt);

  std::shared_ptr<DJVUContext>
  getDJVUContext();
 
private:
  MLBookProc();
 
  void
  activation();
 
  static void
  djvuMessageCallback(ddjvu_context_t *context, void *closure);
 
  std::vector<std::string> supported_types;
 
  std::weak_ptr<DJVUContext> djvu_contex;
  std::mutex djvu_context_mtx;
};
 
#endif // MLBOOKPROC_H