"""Export the current authored Portfolio Evolution scene. Run inside Blender."""
import bpy
from pathlib import Path
root_path = Path(__file__).resolve().parents[3]
scene = bpy.data.scenes["Portfolio Evolution"]
# A separate export scene combines geometry by material: eight runtime draw groups.
export_scene = bpy.data.scenes.new('Evolution Export')
bpy.context.window.scene = export_scene
root = bpy.data.objects.new('evolution-chase-car', None)
export_scene.collection.objects.link(root)
names = {'M_Body_Gunmetal': 'car-body', 'M_Body_Haunch': 'body-haunches', 'M_Glass_Smoke': 'rear-glass', 'M_Rear_Light': 'rear-light-bar', 'M_Cyan_Accent': 'car-underglow-source', 'M_Lower_Graphite': 'body-trim', 'M_Wheel': 'wheel-machining', 'M_Tire': 'tires'}
bpy.context.window.scene = scene
depsgraph = bpy.context.evaluated_depsgraph_get()
groups = {}
for obj in scene.objects:
    if obj.type != 'MESH' or obj.name.startswith('LOOKDEV'):
        continue
    evaluated = obj.evaluated_get(depsgraph)
    mesh = bpy.data.meshes.new_from_object(evaluated, depsgraph=depsgraph)
    mesh.transform(obj.matrix_world)
    clone = bpy.data.objects.new('export-' + obj.name, mesh)
    export_scene.collection.objects.link(clone)
    key = obj.data.materials[0].name.split('.')[0]
    groups.setdefault(key, []).append(clone)
bpy.context.window.scene = export_scene
for key, objects in groups.items():
    bpy.ops.object.select_all(action='DESELECT')
    for obj in objects:
        obj.select_set(True)
    bpy.context.view_layer.objects.active = objects[0]
    if len(objects) > 1:
        bpy.ops.object.join()
    joined = bpy.context.object
    joined.name = 'evolution-' + names[key]
    joined.parent = root
bpy.ops.object.select_all(action='SELECT')
bpy.ops.export_scene.gltf(filepath=str(root_path / 'src/assets/nightdrive-grand-tourer-evolution.glb'), export_format='GLB', use_selection=True, use_active_scene=True, export_apply=True, export_animations=False, export_cameras=False, export_lights=False)
print('Exported', len(groups), 'material groups')
bpy.context.window.scene = scene