"""
blender_list_bones.py
Usage: tooling/blender --background --python tooling/blender_list_bones.py -- <input.glb>

Lists all bone names in a GLB/GLTF armature, sorted alphabetically.
Used to verify bone naming after the January 2026 Quaternius naming update.
"""

import sys
import bpy


if __name__ == "__main__":
    argv = sys.argv
    if "--" not in argv:
        print("Usage: tooling/blender --background --python tooling/blender_list_bones.py -- <input.glb>")
        sys.exit(1)

    args = argv[argv.index("--") + 1:]
    if len(args) < 1:
        print("ERROR: Provide a GLB/GLTF path.")
        sys.exit(1)

    input_path = args[0]

    bpy.ops.wm.read_factory_settings(use_empty=True)
    bpy.ops.import_scene.gltf(filepath=input_path)

    for obj in bpy.context.scene.objects:
        if obj.type == 'ARMATURE':
            print(f"ARMATURE: {obj.name} — {len(obj.data.bones)} bones")
            for b in sorted(obj.data.bones, key=lambda x: x.name):
                print("BONE: " + b.name)
            break
    else:
        print("ERROR: No armature found in the imported file.")
        sys.exit(1)