/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#include "FsUtils.hpp"

namespace fs = std::filesystem;

namespace OpenVulkano
{
	bool FsUtils::DeleteEmptyDirs(const std::filesystem::path& dir, bool recursive)
	{
		for (auto& p: fs::directory_iterator(dir))
		{
			if (fs::is_directory(p))
			{
				if (recursive)
				{
					if (IsTreeEmpty(p))
					{
						fs::remove_all(p);
					}
				}
				else if (fs::is_empty(p))
				{
					fs::remove(p);
				}
			}
		}
	}

	bool FsUtils::IsTreeEmpty(const std::filesystem::path& dir)
	{
		for (auto& p: fs::directory_iterator(dir))
		{
			if (fs::is_directory(p))
			{
				if (!IsTreeEmpty(p))
				{
					return false;
				}
			}
			else
			{
				return false; // found a file, so the directory tree is not empty
			}
		}
		return true;
	}
}