// SPDX-License-Identifier: LGPL-2.1-or-later

/***************************************************************************
 *   Copyright (c) 2005 Jürgen Riegel <juergen.riegel@web.de>              *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Library General Public License (LGPL)   *
 *   as published by the Free Software Foundation; either version 2 of     *
 *   the License, or (at your option) any later version.                   *
 *   for detail see the LICENCE text file.                                 *
 *                                                                         *
 *   FreeCAD 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 Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with FreeCAD; if not, write to the Free Software        *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
 *   USA                                                                   *
 *                                                                         *
 ***************************************************************************/


#ifndef BASE_FILEINFO_H
#define BASE_FILEINFO_H

#include <filesystem>
#include <string>
#include <vector>

#include <FCGlobal.h>


namespace Base
{
class TimeInfo;

/// When reading and writing a character stream, the incoming data can be dumped into the stream
/// unaltered (if it contains only data that is valid in the current XML character set), or it can
/// be Base64-encoded. This enum is used by Reader and Writer to distinguish the two cases.
enum class CharStreamFormat : std::uint8_t
{
    Raw,
    Base64Encoded
};

/** File name unification
 * This class handles everything related to file names
 * the file names are internal generally UTF-8 encoded on
 * all platforms.
 */
class BaseExport FileInfo
{
public:
    enum Permissions : std::uint8_t
    {
        WriteOnly = 0x01,
        ReadOnly = 0x02,
        ReadWrite = 0x03,
    };

    /// Construction
    explicit FileInfo(const char* fileName = "");
    explicit FileInfo(const std::string& fileName);
    /// Set a new file name
    void setFile(const char* name);
    /// Set a new file name
    void setFile(const std::string& name)
    {
        setFile(name.c_str());
    }


    /** @name extraction of information */
    //@{
    /// Returns the file name, including the path (which may be absolute or relative).
    std::string filePath() const;
    /// Returns the dir path name (which may be absolute or relative).
    std::string dirPath() const;
    /// Returns the name of the file, excluding the path, including the extension.
    std::string fileName() const;
    /// Returns the name of the file, excluding the path and the extension.
    std::string fileNamePure() const;
    /// Convert the path name into a UTF-16 encoded wide string format.
    /// @note: Use this function on Windows only.
    std::wstring toStdWString() const;
    /** Returns the extension of the file.
     * The extension consists of all characters in the file after (but not including)
     * the last '.' character.
     *@code
     *  FileInfo fi( "/tmp/archive.tar.gz" );
     *  ext = fi.extension();   // ext = "gz"
     *@endcode
     */
    std::string extension() const;
    /** Returns the complete extension of the file.
     * The complete extension consists of all characters in the file after (but not including)
     * the first '.' character.
     *@code
     *  FileInfo fi( "/tmp/archive.tar.gz" );
     *  ext = fi.completeExtension();   // ext = "tar.gz"
     *@endcode
     */
    std::string completeExtension() const;
    /// Checks for a special extension, NOT case sensitive
    bool hasExtension(const char* Ext) const;
    /// Checks for any of the special extensions, NOT case sensitive
    bool hasExtension(std::initializer_list<const char*> Exts) const;
    //@}

    /** @name methods to test the status of the file or dir */
    //@{
    /// Does the file exist?
    bool exists() const;
    /// Checks if the file exist and is readable
    bool isReadable() const;
    /// Checks if the file exist and is writable
    bool isWritable() const;
    /// Tries to set the file permission
    bool setPermissions(Permissions);
    /// Checks if it is a file (not a directory)
    bool isFile() const;
    /// Checks if it is a directory (not a file)
    bool isDir() const;
    /// The size of the file
    unsigned int size() const;
    /// Returns the time when the file was last modified.
    TimeInfo lastModified() const;
    //@}

    /** @name Directory management*/
    //@{
    /// Creates a directory. Returns true if successful; otherwise returns false.
    bool createDirectory() const;
    /// Creates a directory and all its parent directories. Returns true if successful; otherwise
    /// returns false.
    bool createDirectories() const;
    /// Get a list of the directory content
    std::vector<Base::FileInfo> getDirectoryContent() const;
    /// Delete an empty directory
    bool deleteDirectory() const;
    /// Delete a directory and all its content.
    bool deleteDirectoryRecursive() const;
    //@}

    /// Delete the file
    bool deleteFile() const;
    /// Rename the file
    bool renameFile(const char* NewName);
    /// Rename the file
    bool copyTo(const char* NewName) const;

    /** @name Tools */
    //@{
    /// Get a unique File Name in the given or (if 0) in the temp path
    static std::string getTempFileName(const char* FileName = nullptr, const char* path = nullptr);
    /// Get the path to the dir which is considered to temp files
    static const std::string& getTempPath();
    /// Convert from filesystem path to string
    static std::string pathToString(const std::filesystem::path& path);
    /// Convert from string to filesystem path
    static std::filesystem::path stringToPath(const std::string& str);
    //@}

private:
    std::string FileName;
};

}  // namespace Base


#endif  // BASE_FILEINFO_H