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

#pragma once

#include <QToolBar>
#include <QElapsedTimer>
#include <QLabel>
#include <QToolButton>
#include <QSlider>
#include <QTimer>

#include "../widgets/NumberLineEdit.h"
#include "../widgets/NumericComboBox.h"
#include "../JFJochImageReadingWorker.h"

// Navigation / acquisition toolbar: which image is shown (first/prev/next/last, an editable
// number, and a prominent scrub slider), Jump/Sum, movie playback, and live HTTP sync.
class JFJochViewerToolbarImage : public QToolBar {
    Q_OBJECT

    JFJochImageReadingWorker::AutoloadMode autoload_mode = JFJochImageReadingWorker::AutoloadMode::None;
    bool http_connected = false;
    size_t image_count_in_dataset;
    int64_t curr_image;

    int jump_value = 1;
    int sum = 1;

    QLabel *total_number_label;
    QLineEdit *current_image_edit;
    QIntValidator *current_image_edit_validator;

    QToolButton *leftmost_button;
    QToolButton *left_button;
    QToolButton *right_button;
    QToolButton *rightmost_button;

    QSlider *image_number_slider;
    QTimer *image_number_slider_timer;
    bool image_number_slider_manual = false;

    // On a remote display the counter/slider would otherwise repaint once per produced frame
    // during live follow or movie playback - a full-window upload each. Hold updateButtons()
    // to the remote cadence; the tail run shows the final number.
    QElapsedTimer number_rate_;
    QTimer *number_tail_timer_ = nullptr;

    QToolButton *movie_button;
    QToolButton *open_button;
    QToolButton *autoload_button;

    NumericComboBox *jump;

    void updateButtons();
    void updateHttpButton();
signals:
    void loadImage(int64_t number, int summation);
    void autoLoadButtonPressed(JFJochImageReadingWorker::AutoloadMode mode);
    void imageJumpChanged(int64_t val);
    void requestHttpConnect();   // clicked while not connected: ask the window to open the dialog
    void requestOpenFile();      // open-dataset button: ask the window to open the file dialog
public:
    explicit JFJochViewerToolbarImage(QWidget *parent = nullptr);
public slots:
    void setImageNumber(int64_t total_images, int64_t current_image);
    void stepImage(int steps);
    void setAutoloadMode(JFJochImageReadingWorker::AutoloadMode input);
    void setHttpConnection(bool connected, QString addr);
private slots:
    void leftButtonPressed();
    void rightButtonPressed();
    void leftmostButtonPressed();
    void rightmostButtonPressed();

    void editFinalized();
    void imageNumberSliderPressed();
    void imageNumberSliderMoved(int val);
    void imageNumberSliderReleased();

    void setImageJump(int val);
    void setSummation(int val);

    void movieButtonPressed();
    void autoloadButtonPressed();
};