#include "api.hpp"

#include <cstddef>
#include <cstdint>
#include <fstream>
#include <iomanip>
#include <locale>

PLUGIN_EXPORT std::uint32_t plugin_api_version(){
    return PLUGIN_API_VERSION;
}

PLUGIN_EXPORT PluginType plugin_type(){
    return PluginType::Output;
}

PLUGIN_EXPORT const char* plugin_name(){
    return "CSV output";
}

PLUGIN_EXPORT const char* plugin_description(){
    return "Writes calculated solution points to a CSV file";
}

PLUGIN_EXPORT int write_output(const OutputParameters* parameters){

    std::ofstream stream(parameters->destination_path);
    if (!stream)
        return 1;

    stream.imbue(std::locale::classic());
    stream << std::setprecision(17);
    stream << "t,x1,x2,x3\n";

    for (size_t index = 0; index < parameters->point_count; ++index){
        SolutionPoint point = parameters->points[index];
        stream << point.t << ',' << point.x1 << ','
               << point.x2 << ',' << point.x3 << '\n';
    }

    return stream ? 0 : 2;
}