track_routing.h

// SPDX-FileCopyrightText: © 2025-2026 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
 
#pragma once
 
#include "structure/tracks/track.h"
 
namespace zrythm::structure::tracks
{
class TrackRouting : public QObject
{
  Q_OBJECT
  QML_ELEMENT
  QML_UNCREATABLE ("")
public:
  TrackRouting (TrackRegistry &track_registry, QObject * parent = nullptr);
 
  // ========================================================================
  // QML Interface
  // ========================================================================
 
  Q_INVOKABLE QVariant getOutputTrack (const Track * source) const;
 
  Q_INVOKABLE void
  setOutputTrack (const Track * source, const Track * destination);

  Q_INVOKABLE bool
  canRouteTo (const Track * source, const Track * destination) const;

  Q_SIGNAL void routingChanged ();
 
  // ========================================================================
 
  void
  add_or_replace_route (const TrackUuid &source, const TrackUuid &destination);
  void remove_route_for_source (const TrackUuid &source);
  void remove_routes_for_destination (const TrackUuid &destination);
 
  std::optional<TrackUuidReference>
  get_output_track (const TrackUuid &source) const;
 
private:
  static constexpr auto kTrackRoutesKey = "trackRoutes"sv;
  friend void           to_json (nlohmann::json &j, const TrackRouting &t);
  friend void           from_json (const nlohmann::json &j, TrackRouting &t);
 
private:
  TrackRegistry &track_registry_;

  std::unordered_map<TrackUuid, TrackUuid> track_routes_;
};
} // namespace zrythm::structure::tracks