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 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2025                                                               *
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#include <modules/galaxy/tasks/milkywaypointsconversiontask.h>

#include <openspace/documentation/documentation.h>
#include <ghoul/misc/dictionary.h>
#include <cstdint>
#include <fstream>
#include <iostream>
#include <vector>

namespace openspace {
    
documentation::Documentation MilkywayPointsConversionTask::Documentation() {
    return {
        "MilkywayPointsConversionTask",
        "galaxy_milkywaypointsconversiontask",
        "",
        {}
    };
}

MilkywayPointsConversionTask::MilkywayPointsConversionTask(const ghoul::Dictionary&) {}

std::string MilkywayPointsConversionTask::description() {
    return std::string();
}

void MilkywayPointsConversionTask::perform(const Task::ProgressCallback& progressCallback)
{
    std::ifstream in = std::ifstream(_inFilename, std::ios::in);
    std::ofstream out = std::ofstream(_outFilename, std::ios::out | std::ios::binary);

    std::string format;
    int64_t nPoints = 0;
    in >> format >> nPoints;

    const size_t nFloats = nPoints * 7;

    std::vector<float> pointData(nFloats);

    float x = 0.f;
    float y = 0.f;
    float z = 0.f;
    float r = 0.f;
    float g = 0.f;
    float b = 0.f;
    float a = 0.f;

    for (int64_t i = 0; i < nPoints; i++) {
        in >> x >> y >> z >> r >> g >> b >> a;
        if (in.good()) {
            pointData[i * 7 + 0] = x;
            pointData[i * 7 + 1] = y;
            pointData[i * 7 + 2] = z;
            pointData[i * 7 + 3] = r;
            pointData[i * 7 + 4] = g;
            pointData[i * 7 + 5] = b;
            pointData[i * 7 + 6] = a;
            progressCallback(static_cast<float>(i + 1) / nPoints);
        }
        else {
            std::cout << "Failed to convert point data";
            return;
        }
    }

    out.write(reinterpret_cast<char*>(&nPoints), sizeof(int64_t));
    out.write(reinterpret_cast<char*>(pointData.data()), nFloats * sizeof(float));
}

} // namespace openspace