"""Convert a Quaternius outfit gltf to glb with optional solidify."""
import sys
import bpy

CLOTHING_THICKNESS = 0.025  # 25mm outward solidify

if __name__ == "__main__":
    argv = sys.argv
    if "--" not in argv:
        print("Usage: blender --background --python convert_outfit.py -- <input.gltf> <output.glb>")
        sys.exit(1)
    args = argv[argv.index("--") + 1:]
    input_path = args[0]
    output_path = args[1]

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

    # Solidify clothing meshes for thickness
    meshes = [o for o in bpy.context.scene.objects if o.type == 'MESH']
    for m in meshes:
        if m.name.startswith("Icosphere") or len(m.data.vertices) < 50:
            continue
        bpy.context.view_layer.objects.active = m
        m.select_set(True)
        # Recalculate normals for consistent outward direction
        bpy.ops.object.mode_set(mode='EDIT')
        bpy.ops.mesh.select_all(action='SELECT')
        bpy.ops.mesh.normals_make_consistent(inside=False)
        bpy.ops.object.mode_set(mode='OBJECT')
        # Solidify
        sol = m.modifiers.new(name="Solidify", type='SOLIDIFY')
        sol.thickness = CLOTHING_THICKNESS
        sol.offset = 1.0  # grow outward only
        sol.use_rim = True
        bpy.ops.object.modifier_apply(modifier=sol.name)
        m.select_set(False)
        print(f"  Solidified: {m.name} ({CLOTHING_THICKNESS*1000:.0f}mm)")

    bpy.ops.object.select_all(action='SELECT')

    bpy.ops.export_scene.gltf(
        filepath=output_path,
        use_selection=True,
        export_format='GLB',
        export_animations=False,
        export_yup=True,
        export_texcoords=True,
        export_normals=True,
        export_skins=True,
        export_materials='EXPORT',
    )
    print(f"Exported: {output_path}")