track_factory.h

// SPDX-FileCopyrightText: © 2025-2026 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
 
#pragma once
 
#include "structure/tracks/track_all.h"
 
namespace zrythm::structure::tracks
{

class TrackFactory
{
public:
  using DependenciesProvider = std::function<FinalTrackDependencies ()>;
 
  TrackFactory (DependenciesProvider dependencies_provider)
      : dependencies_provider_ (std::move (dependencies_provider))
  {
  }
 
  template <typename TrackT> class Builder
  {
    friend class TrackFactory;
 
  private:
    explicit Builder (FinalTrackDependencies track_deps)
        : track_deps_ (std::move (track_deps))
    {
    }
 
  public:
    std::unique_ptr<TrackT> build_for_deserialization () const
    {
      return std::make_unique<TrackT> (track_deps_);
    }
 
    auto build ()
    {
      auto obj_ref =
        track_deps_.track_registry_.create_object<TrackT> (track_deps_);
      auto * track = obj_ref.template get_object_as<TrackT> ();
      track->set_default_name ();
      return obj_ref;
    }
 
  private:
    FinalTrackDependencies track_deps_;
  };
 
  template <typename TrackT> auto get_builder () const
  {
    auto builder = Builder<TrackT> (dependencies_provider_ ());
    return builder;
  }
 
  template <FinalTrackSubclass TrackT>
  TrackUuidReference create_empty_track () const
  {
    auto obj_ref = get_builder<TrackT> ().build ();
    return obj_ref;
  }
 
  TrackUuidReference create_empty_track (Track::Type type) const
  {
    switch (type)
      {
      case Track::Type::Audio:
        return create_empty_track<AudioTrack> ();
      case Track::Type::Midi:
        return create_empty_track<MidiTrack> ();
      case Track::Type::MidiGroup:
        return create_empty_track<MidiGroupTrack> ();
      case Track::Type::Folder:
        return create_empty_track<FolderTrack> ();
      case Track::Type::Instrument:
        return create_empty_track<InstrumentTrack> ();
      case Track::Type::Master:
        return create_empty_track<MasterTrack> ();
      case Track::Type::Chord:
        return create_empty_track<ChordTrack> ();
      case Track::Type::Marker:
        return create_empty_track<MarkerTrack> ();
      case Track::Type::Modulator:
        return create_empty_track<ModulatorTrack> ();
      case Track::Type::AudioBus:
        return create_empty_track<AudioBusTrack> ();
      case Track::Type::MidiBus:
        return create_empty_track<MidiBusTrack> ();
      case Track::Type::AudioGroup:
        return create_empty_track<AudioGroupTrack> ();
      }
 
    throw std::invalid_argument ("invalid track type");
  }
 
  template <typename TrackT>
  auto clone_new_object_identity (const TrackT &other) const
  {
    auto track_dependencies = dependencies_provider_ ();
    return track_dependencies.plugin_registry_.clone_object (
      other, track_dependencies.plugin_registry_);
  }
 
  template <typename TrackT>
  auto clone_object_snapshot (const TrackT &other, QObject &owner) const
  {
    auto     track_dependencies = dependencies_provider_ ();
    TrackT * new_obj{};
 
    new_obj = other.clone_qobject (
      &owner, utils::ObjectCloneType::Snapshot,
      track_dependencies.plugin_registry_);
    return new_obj;
  }
 
private:
  DependenciesProvider dependencies_provider_;
};
 
} // namespace zrythm::structure::tracks