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#include "wanda/system/filesystem.hpp"
#include <random>
#include <ranges>
namespace wanda::system
{
std::optional<path_list> scan(std::filesystem::path source, bool(filter)(std::filesystem::path const &))
{
if (!std::filesystem::is_directory(source))
{
return std::nullopt;
}
auto entries = std::filesystem::recursive_directory_iterator{source};
auto result = path_list{};
for (auto & entry : entries | std::views::filter(filter))
{
result.push_back(entry.path());
}
return result;
}
std::filesystem::path random_pick(path_list const & paths)
{
static auto generator = std::mt19937{std::random_device{}()};
auto distribution = std::uniform_int_distribution<std::size_t>{0, paths.size() - 1};
return paths[distribution(generator)];
}
} // namespace wanda::system
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