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

#include "JFJochSimpleChartView.h"

#include <QMenu>
#include <QClipboard>
#include <QApplication>

JFJochSimpleChartView::JFJochSimpleChartView(QWidget *parent)
        : QChartView(new QChart(), parent) {
    chart()->legend()->hide();
    setFixedHeight(200);
    setRenderHint(QPainter::Antialiasing);
    //setRubberBand(QChartView::RubberBand::HorizontalRubberBand);
}

void JFJochSimpleChartView::UpdateData(const std::vector<float> &in_x, const std::vector<float> &in_y) {
    x = in_x;
    y = in_y;
    chart()->removeAllSeries();
    if (!x.empty() && x.size() == y.size()) {
        series = new QLineSeries(this);
        for (int i = 0; i < x.size(); i++)
            series->append(x[i], in_y[i]);
        chart()->addSeries(series);
        chart()->createDefaultAxes();
    }
}

void JFJochSimpleChartView::ClearData() {
    chart()->removeAllSeries();
}

void JFJochSimpleChartView::contextMenuEvent(QContextMenuEvent *event) {
    QMenu menu(this);
    QAction *copyXY = menu.addAction("Copy (x y) points");
    copyXY->setEnabled(!x.empty() && x.size() == y.size());

    QAction *chosen = menu.exec(event->globalPos());
    if (chosen == copyXY) {
        QString out;
        out.reserve(static_cast<int>(x.size() * 16)); // rough prealloc
        for (size_t i = 0; i < x.size() && i < y.size(); ++i) {
            out.append(QString::number(x[i], 'g', 10));
            out.append(' ');
            out.append(QString::number(y[i], 'g', 10));
            if (i + 1 < x.size()) out.append('\n');
        }
        QClipboard *cb = QApplication::clipboard();
        cb->setText(out);
    }
}