/*
 FS.h - file system wrapper
 Copyright (c) 2015 Ivan Grokhotkov. All rights reserved.
 This file is part of the esp8266 core for Arduino environment.

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library 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
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef FS_H
#define FS_H

#include <memory>
#include <Arduino.h>

namespace fs {

#define FILE_READ   "r"
#define FILE_WRITE  "w"
#define FILE_APPEND "a"

class File;

class FileImpl;
typedef std::shared_ptr<FileImpl> FileImplPtr;
class FSImpl;
typedef std::shared_ptr<FSImpl> FSImplPtr;

enum SeekMode {
  SeekSet = 0,
  SeekCur = 1,
  SeekEnd = 2
};

class File : public Stream {
public:
  File(FileImplPtr p = FileImplPtr()) : _p(p) {
    _timeout = 0;
  }

  size_t write(uint8_t) override;
  size_t write(const uint8_t *buf, size_t size) override;
  int available() override;
  int read() override;
  int peek() override;
  void flush() override;
  size_t read(uint8_t *buf, size_t size);
  size_t readBytes(char *buffer, size_t length) {
    return read((uint8_t *)buffer, length);
  }

  bool seek(uint32_t pos, SeekMode mode);
  bool seek(uint32_t pos) {
    return seek(pos, SeekSet);
  }
  size_t position() const;  // returns (size_t)-1 on error
  size_t size() const;
  bool setBufferSize(size_t size);
  void close();
  operator bool() const;
  time_t getLastWrite();
  const char *path() const;
  const char *name() const;

  boolean isDirectory(void);
  boolean seekDir(long position);
  File openNextFile(const char *mode = FILE_READ);
  String getNextFileName(void);
  String getNextFileName(boolean *isDir);
  void rewindDirectory(void);

protected:
  FileImplPtr _p;
};

class FS {
public:
  FS(FSImplPtr impl) : _impl(impl) {}

  File open(const char *path, const char *mode = FILE_READ, const bool create = false);
  File open(const String &path, const char *mode = FILE_READ, const bool create = false);

  bool exists(const char *path);
  bool exists(const String &path);

  bool remove(const char *path);
  bool remove(const String &path);

  bool rename(const char *pathFrom, const char *pathTo);
  bool rename(const String &pathFrom, const String &pathTo);

  bool mkdir(const char *path);
  bool mkdir(const String &path);

  bool rmdir(const char *path);
  bool rmdir(const String &path);

  const char *mountpoint();

protected:
  FSImplPtr _impl;
};

}  // namespace fs

#ifndef FS_NO_GLOBALS
using fs::File;
using fs::FS;
using fs::SeekCur;
using fs::SeekEnd;
using fs::SeekMode;
using fs::SeekSet;
#endif  //FS_NO_GLOBALS

#endif  //FS_H
