EventViewerDialog.hpp

/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * Copyright (C) 2024-2025 Marco Craveiro <marco.craveiro@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 *
 */
#ifndef ORES_QT_EVENT_VIEWER_WINDOW_HPP
#define ORES_QT_EVENT_VIEWER_WINDOW_HPP
 
#include <deque>
#include <vector>
#include <memory>
#include <QWidget>
#include <QDateTime>
#include <QAbstractTableModel>
#include "ores.eventing/service/event_bus.hpp"
#include "ores.logging/make_logger.hpp"
 
class QTableView;
class QVBoxLayout;
class QLabel;
class QPushButton;
 
namespace ores::qt {
 
class ClientManager;
 
struct EventRecord {
    QDateTime timestamp;
    QString eventType;
    QString source;      // "local" or "remote"
    QString summary;
    QString jsonPayload;
};
 
class EventTableModel final : public QAbstractTableModel {
    Q_OBJECT
 
public:
    enum Column {
        Timestamp = 0,
        EventType,
        Source,
        Summary,
        ColumnCount
    };
 
    explicit EventTableModel(QObject* parent = nullptr);
 
    [[nodiscard]] int rowCount(const QModelIndex& parent = QModelIndex()) const override;
    [[nodiscard]] int columnCount(const QModelIndex& parent = QModelIndex()) const override;
    [[nodiscard]] QVariant data(const QModelIndex& index,
                                int role = Qt::DisplayRole) const override;
    [[nodiscard]] QVariant headerData(int section, Qt::Orientation orientation,
                                       int role = Qt::DisplayRole) const override;
 
    void addEvent(EventRecord event);
    void clear();
    [[nodiscard]] const EventRecord& eventAt(int row) const;
    [[nodiscard]] int eventCount() const { return static_cast<int>(events_.size()); }
 
private:
    std::deque<EventRecord> events_;
    static constexpr int max_events_ = 1000;
};
 
class EventViewerWindow final : public QWidget {
    Q_OBJECT
 
private:
    inline static std::string_view logger_name = "ores.qt.event_viewer_window";
 
    [[nodiscard]] static auto& lg() {
        using namespace ores::logging;
        static auto instance = make_logger(logger_name);
        return instance;
    }
 
public:
    explicit EventViewerWindow(
        std::shared_ptr<eventing::service::event_bus> eventBus,
        ClientManager* clientManager,
        QWidget* parent = nullptr);
 
    ~EventViewerWindow() override;
 
protected:
    void showEvent(QShowEvent* event) override;
    void closeEvent(QCloseEvent* event) override;
 
private slots:
    void onEventDoubleClicked(const QModelIndex& index);
    void onClearClicked();
    void onNotificationReceived(const QString& eventType,
                                const QDateTime& timestamp,
                                const QStringList& entityIds);
 
private:
    void setupUi();
    void subscribeToEvents();
    void unsubscribeFromEvents();
 
    void addEvent(EventRecord record);
 
    std::shared_ptr<eventing::service::event_bus> eventBus_;
    ClientManager* clientManager_;
 
    // UI components
    QTableView* tableView_;
    EventTableModel* model_;
    QLabel* statusLabel_;
    QPushButton* clearButton_;
 
    // Event subscriptions (cleared on close)
    std::vector<eventing::service::subscription> subscriptions_;
 
    // Track if we're connected to ClientManager signals
    bool connectedToClientManager_{false};
};
 
// Backwards compatibility alias
using EventViewerDialog = EventViewerWindow;
 
}
 
#endif