#include <iostream>
#include <fstream>
#include <filesystem>
#include <string>
#include <system_error>

int main() {
    namespace fs = std::filesystem;
    const fs::path directory{"bhylu-cpp-file-lab"};
    std::error_code error;
    if (!fs::create_directory(directory, error) || error) { return 1; }
    const auto path = directory / "manifest.txt";
    std::ofstream output{path};
    output << "Quay,12\n";
    output.close();
    if (!output) { fs::remove(path, error); fs::remove(directory, error); return 1; }
    std::ifstream input{path};
    std::string line;
    bool valid = static_cast<bool>(std::getline(input, line)) && line == "Quay,12";
    input.close();
    fs::remove(path, error);
    if (error || !fs::remove(directory, error) || error || !valid) { return 1; }
    std::cout << "Manifest round trip verified\n";
}