/*
 * This file is part of the DXX-Rebirth project <http://www.dxx-rebirth.com/>.
 * It is copyright by its individual contributors, as recorded in the
 * project's Git history.  See COPYING.txt at the top level for license
 * terms and a link to the Git history.
 */

#pragma once
#include <physfs.h>

typedef char file_extension_t[5];

#ifdef __cplusplus
#include <cstdint>
#include <memory>
#include "null_sentinel_iterator.h"

#include "dxxsconf.h"
#include "compiler-array.h"

class PHYSFS_list_deleter
{
public:
	void operator()(char **list) const
	{
		PHYSFS_freeList(list);
	}
};

template <typename D>
class PHYSFSX_uncounted_list_template : public std::unique_ptr<char *[], D>
{
	typedef std::unique_ptr<char *[], D> base_ptr;
public:
	typedef null_sentinel_iterator<char *> const_iterator;
	DXX_INHERIT_CONSTRUCTORS(PHYSFSX_uncounted_list_template, base_ptr);
	const_iterator begin() const
	{
		return this->get();
	}
	const_iterator end() const
	{
		return {};
	}
};

template <typename D>
class PHYSFSX_counted_list_template : public PHYSFSX_uncounted_list_template<D>
{
	typedef PHYSFSX_uncounted_list_template<D> base_ptr;
	typedef typename base_ptr::pointer pointer;
	uint_fast32_t count;
public:
	PHYSFSX_counted_list_template() = default;
	PHYSFSX_counted_list_template(char **p) :
		base_ptr(p), count(0)
	{
	}
	uint_fast32_t get_count() const
	{
		return count;
	}
	void set_count(uint_fast32_t c)
	{
		count = c;
	}
	void reset()
	{
		base_ptr::reset();
	}
	void reset(pointer p)
	{
		count = 0;
		base_ptr::reset(p);
	}
};

typedef PHYSFSX_uncounted_list_template<PHYSFS_list_deleter> PHYSFSX_uncounted_list;
typedef PHYSFSX_counted_list_template<PHYSFS_list_deleter> PHYSFSX_counted_list;

__attribute_nonnull()
__attribute_warn_unused_result
PHYSFSX_uncounted_list PHYSFSX_findFiles(const char *path, const file_extension_t *exts, uint_fast32_t count);

template <std::size_t count>
__attribute_nonnull()
__attribute_warn_unused_result
static inline PHYSFSX_uncounted_list PHYSFSX_findFiles(const char *path, const array<file_extension_t, count> &exts)
{
	return PHYSFSX_findFiles(path, exts.data(), count);
}

__attribute_nonnull()
__attribute_warn_unused_result
PHYSFSX_uncounted_list PHYSFSX_findabsoluteFiles(const char *path, const char *realpath, const file_extension_t *exts, uint_fast32_t count);

template <std::size_t count>
__attribute_nonnull()
__attribute_warn_unused_result
static inline PHYSFSX_uncounted_list PHYSFSX_findabsoluteFiles(const char *path, const char *realpath, const array<file_extension_t, count> &exts)
{
	return PHYSFSX_findabsoluteFiles(path, realpath, exts.data(), count);
}
#endif