#include "../work/AKRM/src/workplaceagent/common/scopeguard.h"

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <experimental/string_view>
#include<sys/wait.h>
#include "../work/AKRM/extern/variant/include/mpark/variant.hpp"

using namespace std;
#include <experimental/optional>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <regex>
#include <string>

struct CGroupInfo {
    CGroupInfo(std::string &&controller, std::string &&cgroupPath)
        : controller { std::move(controller) },
          cgroupPath { std::move(cgroupPath) }
    {}

    std::string controller;
    std::string cgroupPath;
};

std::vector<CGroupInfo> parseCGroups(std::experimental::string_view view) {
    std::vector<CGroupInfo> result;
    std::regex reg(R"(\d+:(?:name=)?([^:]*):\/(.*))");
    std::istringstream tokenStream(std::string(view.data(), view.length()));
    std::string line;
    while(std::getline(tokenStream, line, '\n')) {
        std::smatch match;
        if(!std::regex_search(line, match, reg)) {
            continue;
        }
        if (match.size() == 3) {
            std::string first = match[1].str();
            if (first == "") {
                first = "unified";
            }
            result.emplace_back(std::move(first), match[2].str());
        }
    }
    return result;
}

void setCGroup(std::vector<CGroupInfo> cgroup) {
    for (auto &g : cgroup) {
        int fd = open(fmt::sprintf("/sys/fs/cgroup/%s/%s/cgroup.procs", g.controller, g.cgroupPath));
        __scope_guard {
            close(fd);
        };
    }
}

int main() {
    std::vector<CGroupInfo> res = parseCgroups
(R"(12:perf_event:/
11:devices:/user.slice
10:freezer:/
9:cpu,cpuacct:/
8:hugetlb:/
7:rdma:/
6:cpuset:/
5:blkio:/
4:net_cls,net_prio:/
3:memory:/
2:pids:/user.slice/user-1000.slice/session-2.scope
1:name=systemd:/user.slice/user-1000.slice/session-2.scope
0::/user.slice/user-1000.slice/session-2.scope)");

    for (int i = 0; i < res.size(); i++) {
        std::cout << "controller: " << res[i].controller << " cgroupPath: " << res[i].cgroupPath << std::endl;
    }
    return 0;
}