#ifndef __COMFORTABLE_SWIPE__service_stop__
#define __COMFORTABLE_SWIPE__service_stop__

/*
Comfortable Swipe
by Rico Tiongson

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdexcept> // std::runtime_error
#include <unistd.h> // popen, pclose, getpid
#include <memory> // std::unique_ptr
#include <array> // std::array
#include <cstdio> // std::FILE, std::feof, std::fgets
#include <cstdlib> // std::atoi, std::system
#include <string> // std::string, std::to_string

namespace comfortable_swipe::service
{
    /**
     * Stops all comfortable-swipe instances.
     */
    void stop()
    {

        // read all service names from process (pgrep)
        std::array<char, 128> buffer;
        std::unique_ptr<FILE, decltype(&pclose)> pipe(popen("pgrep -f comfortable-swipe", "r"), pclose);

        // make sure pipe exists
        if (!pipe)
            throw std::runtime_error("stop command failed");

        // buffer what to kill
        std::string kill = "kill";

        // read until end of line
        while (!std::feof(pipe.get()))
        {
            if (std::fgets(buffer.data(), buffer.size(), pipe.get()) != NULL)
            {
                int pid = std::atoi(buffer.data());
                if (pid != getpid())
                {
                    kill += " ";
                    kill += std::to_string(pid);
                }
            }
        }

        // run "kill {pid1} {pid2}..."
        (void) std::system(kill.data());
    }
}

#endif /* __COMFORTABLE_SWIPE__service_stop__ */