Waybar/include/modules/sni/watcher.hpp

#pragma once

#include <dbus-status-notifier-watcher.h>
#include <giomm.h>
#include <glibmm/refptr.h>

namespace waybar::modules::SNI {

class Watcher {
 private:
  Watcher();

 public:
  ~Watcher();

  using singleton = std::shared_ptr<Watcher>;
  static singleton getInstance() {
    static std::weak_ptr<Watcher> weak;

    std::shared_ptr<Watcher> strong = weak.lock();
    if (!strong) {
      strong = std::shared_ptr<Watcher>(new Watcher());
      weak = strong;
    }
    return strong;
  }

 private:
  typedef enum { GF_WATCH_TYPE_HOST, GF_WATCH_TYPE_ITEM } GfWatchType;

  typedef struct {
    GfWatchType type;
    Watcher *watcher;
    gchar *service;
    gchar *bus_name;
    gchar *object_path;
    guint watch_id;
  } GfWatch;

  void busAcquired(const Glib::RefPtr<Gio::DBus::Connection> &, Glib::ustring);
  static gboolean handleRegisterHost(Watcher *, GDBusMethodInvocation *, const gchar *);
  static gboolean handleRegisterItem(Watcher *, GDBusMethodInvocation *, const gchar *);
  static GfWatch *gfWatchFind(GSList *list, const gchar *bus_name, const gchar *object_path);
  static GfWatch *gfWatchNew(GfWatchType, const gchar *, const gchar *, const gchar *, Watcher *);
  static void nameVanished(GDBusConnection *connection, const char *name, gpointer data);
  static void gfWatchFree(gpointer data);

  void updateRegisteredItems(SnWatcher *obj);

  uint32_t bus_name_id_;
  GSList *hosts_ = nullptr;
  GSList *items_ = nullptr;
  SnWatcher *watcher_ = nullptr;
};

}  // namespace waybar::modules::SNI