/*
 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 "Arduino.h"

#include <memory>
#include <string>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>

namespace fs {

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

class File;

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

class FS;

class File : public Stream {
  public:
    explicit File(FS & fs, FILE * f, std::string filename);
    explicit File(FS & fs, DIR * d, std::string filename);
    ~File();

    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) override {
        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;
    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);
    File                     openNextFile(const char * mode = FILE_READ);
    /* String */ std::string getNextFileName(void);
    void                     rewindDirectory(void);

  private:
    FS &        fs_;
    FILE *      f_{nullptr};
    int         peek_{-1};
    std::string path_;
    std::string name_;
    DIR *       d_{nullptr};
};

class FS {
  public:
    FS() {
    }

    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);
};

} // 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
