ClientManager.hpp

/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * Copyright (C) 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_CLIENT_MANAGER_HPP
#define ORES_QT_CLIENT_MANAGER_HPP
 
#include <chrono>
#include <memory>
#include <optional>
#include <string>
#include <thread>
#include <boost/asio/io_context.hpp>
#include <boost/asio/executor_work_guard.hpp>
#include <boost/uuid/uuid.hpp>
#include <QObject>
#include <QDateTime>
#include "ores.comms/net/client.hpp"
#include "ores.comms/service/remote_event_adapter.hpp"
#include "ores.eventing/service/event_bus.hpp"
#include "ores.utility/log/make_logger.hpp"
 
namespace ores::qt {
 
class ClientManager : public QObject {
    Q_OBJECT
 
private:
    inline static std::string_view logger_name =
        "ores.qt.client_manager";
 
    [[nodiscard]] static auto& lg() {
        using namespace ores::utility::log;
        static auto instance = make_logger(logger_name);
        return instance;
    }
 
public:
    explicit ClientManager(std::shared_ptr<eventing::service::event_bus> event_bus,
                           QObject* parent = nullptr);
    ~ClientManager() override;
 
    std::pair<bool, QString> connectAndLogin(
        const std::string& host,
        std::uint16_t port,
        const std::string& username,
        const std::string& password);
 
    void disconnect();
 
    bool logout();
 
    bool isConnected() const;
 
    std::expected<comms::messaging::frame, comms::messaging::error_code>
    sendRequest(comms::messaging::frame request);
 
    std::shared_ptr<comms::net::client> getClient() const { return client_; }
 
    boost::asio::any_io_executor getExecutor() {
        return io_context_->get_executor();
    }
 
    void subscribeToEvent(const std::string& eventType);
 
    void unsubscribeFromEvent(const std::string& eventType);
 
    void setSupportedCompression(std::uint8_t compression) {
        supported_compression_ = compression;
    }
 
signals:
    void connected();
    void disconnected();
    void reconnecting();
    void reconnected();
    void connectionError(const QString& message);
 
    void notificationReceived(const QString& eventType, const QDateTime& timestamp);
 
private:
    void setupIO();
    void cleanupIO();
 
private:
    // Persistent IO infrastructure
    std::unique_ptr<boost::asio::io_context> io_context_;
    std::unique_ptr<boost::asio::executor_work_guard<
        boost::asio::io_context::executor_type>> work_guard_;
    std::unique_ptr<std::thread> io_thread_;
 
    // Transient client
    std::shared_ptr<comms::net::client> client_;
 
    // Remote event adapter for subscriptions
    std::unique_ptr<comms::service::remote_event_adapter> event_adapter_;
 
    // Logged-in account tracking
    std::optional<boost::uuids::uuid> logged_in_account_id_;
 
    // Event bus for publishing connection events (passed to client)
    std::shared_ptr<eventing::service::event_bus> event_bus_;
 
    // Connection details for event publishing
    std::string connected_host_;
    std::uint16_t connected_port_{0};
 
    // Compression support bitmask (default: all compression types)
    std::uint8_t supported_compression_{0x07}; // COMPRESSION_SUPPORT_ALL
};
 
}
 
#endif