#ifndef __CSVWriter_H__
#define __CSVWriter_H__

#include<bits/stdc++.h>

struct CSVWriter
{
    std::string              m_fileName;
    std::ofstream            m_ofstream;
    std::vector<std::string> m_columnNames;
    
    CSVWriter(const char* file,
            std::ios_base::openmode mode = (std::ios_base::openmode)0,
            const std::vector<std::string>& colNames = {})
        : m_fileName(file),
          m_ofstream(file, mode|std::ios_base::out),
          m_columnNames(colNames)
    {
        for (auto col: colNames)
            m_ofstream << col << ",";
        if (colNames.size() )
            m_ofstream << std::endl;
    }

    ~CSVWriter()
    {
        m_ofstream.close();
    }

    template<class... Ts>
    void writeLine(Ts const&... ts)
    {
        // https://riptutorial.com/cplusplus/example/3208/iterating-over-a-parameter-pack
        ((m_ofstream << ts << ","), ...);
        m_ofstream << std::endl;
    }

    void close()
    {
        m_ofstream.close();
    }
};

#endif