// SPDX-FileCopyrightText: 2025 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
// SPDX-License-Identifier: GPL-3.0-only

#include "JFJochImageReadingWorker.h"
#include <QVector>
#include <iostream>

JFJochImageReadingWorker::JFJochImageReadingWorker(JFJochHDF5Reader &reader,
                                                   QObject *parent) : QObject(parent), reader(reader) {}

void JFJochImageReadingWorker::LoadFile(const QString &filename) {
    try {
        auto start = std::chrono::high_resolution_clock::now();
        reader.ReadFile(filename.toStdString());
        total_images = reader.GetNumberOfImages();
        auto end = std::chrono::high_resolution_clock::now();
        auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
        logger.Info("Loaded file {} in {} ms", filename.toStdString(), duration);

        current_image = -1;
        current_summation = 1;
        LoadImage(0, 1);

        emit datasetLoaded();
    } catch (std::exception &e) {
        logger.Error("Error loading file {} {}", filename.toStdString(), e.what());
    }
}

void JFJochImageReadingWorker::CloseFile() {
    reader.Close();
    current_image = -1;
    current_summation = 1;
    total_images = 0;
    emit noImageLoaded();
}

void JFJochImageReadingWorker::LoadImage(int64_t image_number, int64_t summation) {
    try {
        if (image_number < 0
                || summation <= 0
                || image_number + summation > total_images
                || ((image_number == current_image) && (current_summation == summation)))
            return;

        std::vector<int32_t> image;

        auto start = std::chrono::high_resolution_clock::now();

        reader.LoadImage(image_number, summation);
        current_image = image_number;
        current_summation = summation;

        auto end = std::chrono::high_resolution_clock::now();
        auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
        logger.Info("Loaded image {} in {} ms", image_number, duration);

        emit imageNumberChanged(total_images, current_image);
        emit imageLoaded();
    } catch (std::exception &e) {
        logger.Error("Error loading image {}", image_number);
    }
}

void JFJochImageReadingWorker::SetROIBox(QRect box) {
    reader.SetROI(ROIBox("roi1", box.left(), box.right(), box.bottom(), box.top()));
    emit imageStatsUpdated();
}

void JFJochImageReadingWorker::SetROICircle(double x, double y, double radius) {
    if (radius <= 0)
        reader.ClearROI();
    else
        reader.SetROI(ROICircle("roi1", x, y, radius));
    emit imageStatsUpdated();
}