#!/usr/bin/env python3
import pathlib, sys, bpy

LIBRARY_NAME = "WebGapCatalogRedo.blend"
OBJECT_NAME = "WebGapCatalogRedoObject"

def main():
    args = sys.argv[sys.argv.index("--") + 1:]
    if len(args) != 1: raise SystemExit("usage")
    output = pathlib.Path(args[0]).resolve(); source = output.with_name(LIBRARY_NAME)
    bpy.ops.wm.read_factory_settings(use_empty=True)
    mesh = bpy.data.meshes.new("WebGapCatalogRedoMesh"); mesh.from_pydata([(-1,0,0),(1,0,0),(0,1,0)], [], [(0,1,2)])
    obj = bpy.data.objects.new(OBJECT_NAME, mesh); bpy.context.scene.collection.objects.link(obj)
    bpy.ops.wm.save_as_mainfile(filepath=str(source), check_existing=False, compress=True)
    bpy.ops.wm.read_factory_settings(use_empty=True)
    with bpy.data.libraries.load(str(source), link=True) as (data_from, data_to): data_to.objects = [OBJECT_NAME]
    bpy.context.scene.collection.objects.link(data_to.objects[0])
    bpy.ops.wm.save_as_mainfile(filepath=str(output), check_existing=False, compress=True)

if __name__ == "__main__": main()