/* SPDX-License-Identifier: GPL-2.0-or-later */

#include "BKE_curves.hh"

#include "BKE_curve_to_mesh.hh"

#include "UI_interface.h"
#include "UI_resources.h"

#include "node_geometry_util.hh"

namespace blender::nodes::node_geo_curve_to_mesh_cc {

static void node_declare(NodeDeclarationBuilder &b)
{
  b.add_input<decl::Geometry>(N_("Curve")).supported_type(GEO_COMPONENT_TYPE_CURVE);
  b.add_input<decl::Geometry>(N_("Profile Curve"))
      .only_realized_data()
      .supported_type(GEO_COMPONENT_TYPE_CURVE);
  b.add_input<decl::Bool>(N_("Fill Caps"))
      .description(
          N_("If the profile spline is cyclic, fill the ends of the generated mesh with N-gons"));
  b.add_output<decl::Geometry>(N_("Mesh"));
}

static void geometry_set_curve_to_mesh(GeometrySet &geometry_set,
                                       const GeometrySet &profile_set,
                                       const bool fill_caps)
{
  const Curves &curves = *geometry_set.get_curves_for_read();
  const Curves *profile_curves = profile_set.get_curves_for_read();

  GeometryComponentEditData::remember_deformed_curve_positions_if_necessary(geometry_set);

  if (profile_curves == nullptr) {
    Mesh *mesh = bke::curve_to_wire_mesh(bke::CurvesGeometry::wrap(curves.geometry));
    geometry_set.replace_mesh(mesh);
  }
  else {
    Mesh *mesh = bke::curve_to_mesh_sweep(bke::CurvesGeometry::wrap(curves.geometry),
                                          bke::CurvesGeometry::wrap(profile_curves->geometry),
                                          fill_caps);
    geometry_set.replace_mesh(mesh);
  }
}

static void node_geo_exec(GeoNodeExecParams params)
{
  GeometrySet curve_set = params.extract_input<GeometrySet>("Curve");
  GeometrySet profile_set = params.extract_input<GeometrySet>("Profile Curve");
  const bool fill_caps = params.extract_input<bool>("Fill Caps");

  bool has_curves = false;
  curve_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
    if (geometry_set.has_curves()) {
      has_curves = true;
      geometry_set_curve_to_mesh(geometry_set, profile_set, fill_caps);
    }
    geometry_set.keep_only_during_modify({GEO_COMPONENT_TYPE_MESH});
  });

  params.set_output("Mesh", std::move(curve_set));
}

}  // namespace blender::nodes::node_geo_curve_to_mesh_cc

void register_node_type_geo_curve_to_mesh()
{
  namespace file_ns = blender::nodes::node_geo_curve_to_mesh_cc;

  static bNodeType ntype;

  geo_node_type_base(&ntype, GEO_NODE_CURVE_TO_MESH, "Curve to Mesh", NODE_CLASS_GEOMETRY);
  ntype.declare = file_ns::node_declare;
  ntype.geometry_node_execute = file_ns::node_geo_exec;
  nodeRegisterType(&ntype);
}