/**************************************************************************/
/*  file_access_unix.h                                                    */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
/* "Software"), to deal in the Software without restriction, including    */
/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
/* permit persons to whom the Software is furnished to do so, subject to  */
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/**************************************************************************/

#pragma once

#include "core/io/file_access.h"
#include "core/os/memory.h"

#include <cstdio>

#if defined(UNIX_ENABLED)

class FileAccessUnix : public FileAccess {
	GDSOFTCLASS(FileAccessUnix, FileAccess);
	FILE *f = nullptr;
	int flags = 0;
	void check_errors(bool p_write = false) const;
	mutable Error last_error = OK;
	String save_path;
	String path;
	String path_src;

	void _close();

#if defined(TOOLS_ENABLED)
	String get_real_path() const; // Returns the resolved real path for the current open file.
#endif

public:
	typedef void (*CloseNotificationFunc)(const String &p_file, int p_flags);
	static CloseNotificationFunc close_notification_func;

	virtual Error open_internal(const String &p_path, int p_mode_flags) override; ///< open a file
	virtual bool is_open() const override; ///< true when file is open

	virtual String get_path() const override; /// returns the path for the current open file
	virtual String get_path_absolute() const override; /// returns the absolute path for the current open file

	virtual void seek(uint64_t p_position) override; ///< seek to a given position
	virtual void seek_end(int64_t p_position = 0) override; ///< seek from the end of file
	virtual uint64_t get_position() const override; ///< get position in the file
	virtual uint64_t get_length() const override; ///< get size of the file

	virtual bool eof_reached() const override; ///< reading passed EOF

	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const override;

	virtual Error get_error() const override; ///< get last error

	virtual Error resize(int64_t p_length) override;
	virtual void flush() override;
	virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) override; ///< store an array of bytes

	virtual bool file_exists(const String &p_path) override; ///< return true if a file exists

	virtual uint64_t _get_modified_time(const String &p_file) override;
	virtual uint64_t _get_access_time(const String &p_file) override;
	virtual int64_t _get_size(const String &p_file) override;
	virtual BitField<FileAccess::UnixPermissionFlags> _get_unix_permissions(const String &p_file) override;
	virtual Error _set_unix_permissions(const String &p_file, BitField<FileAccess::UnixPermissionFlags> p_permissions) override;

	virtual bool _get_hidden_attribute(const String &p_file) override;
	virtual Error _set_hidden_attribute(const String &p_file, bool p_hidden) override;
	virtual bool _get_read_only_attribute(const String &p_file) override;
	virtual Error _set_read_only_attribute(const String &p_file, bool p_ro) override;

	virtual PackedByteArray _get_extended_attribute(const String &p_file, const String &p_attribute_name) override;
	virtual Error _set_extended_attribute(const String &p_file, const String &p_attribute_name, const PackedByteArray &p_data) override;
	virtual Error _remove_extended_attribute(const String &p_file, const String &p_attribute_name) override;
	virtual PackedStringArray _get_extended_attributes_list(const String &p_file) override;

	virtual void close() override;

	FileAccessUnix() {}
	virtual ~FileAccessUnix();
};

#endif // UNIX_ENABLED
