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// Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef INCLUDED_SRC_TEST_UTILS_LARGE_OBJECTS_LARGE_OBJECT_UTILS_HPP
#define INCLUDED_SRC_TEST_UTILS_LARGE_OBJECTS_LARGE_OBJECT_UTILS_HPP
#include <cstdint>
#include <filesystem>
#include <string_view>
/// \brief Provides an interface for randomizing large files and directories.
class LargeObjectUtils {
public:
static constexpr std::string_view kTreeEntryPrefix =
"additional-large-prefix-to-make-tree-entry-larger";
/// \brief Generate a file of the specified size in the specified location.
/// If the file exists, it is overwritten. To reduce the number of
/// randomizations, a pool of pre-generated chunks is used.
/// \param path Output path.
/// \param size Size of the resulting file in bytes.
/// \param is_executable Set executable permissions
/// \return True if the file is generated properly.
[[nodiscard]] static auto GenerateFile(std::filesystem::path const& path,
std::uintmax_t size,
bool is_executable = false) noexcept
-> bool;
/// \brief Generate a directory in the specified location and fill it with a
/// number of randomized files. If the directory exists, it is overwritten.
/// The name of each file contains a random number and is prefixed with
/// kTreeEntryPrefix (to make tree entry larger for git). Each file contains
/// the same random number as in it's name.
/// \param path Output path.
/// \param entries_count Number of file entries in the directory.
/// \return True if the directory is generated properly.
[[nodiscard]] static auto GenerateDirectory(
std::filesystem::path const& path,
std::uintmax_t entries_count) noexcept -> bool;
};
#endif // INCLUDED_SRC_TEST_UTILS_LARGE_OBJECTS_LARGE_OBJECT_UTILS_HPP
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