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

import bpy


LIBRARY_NAME = "WebGapCatalogsSave.blend"
OBJECT_NAME = "WebGapCatalogsSaveObject"


def main():
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 1:
        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00274.py -- OUTPUT")
    output = pathlib.Path(arguments[0]).resolve()
    source = output.with_name(LIBRARY_NAME)
    bpy.ops.wm.read_factory_settings(use_empty=True)
    mesh = bpy.data.meshes.new("WebGapCatalogsSaveMesh")
    mesh.from_pydata([(-1.0, 0.0, 0.0), (1.0, 0.0, 0.0), (0.0, 1.0, 0.0)], [], [(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):
        if OBJECT_NAME not in data_from.objects:
            raise RuntimeError("catalogs-save source object is missing")
        data_to.objects = [OBJECT_NAME]
    linked = data_to.objects[0]
    if linked is None:
        raise RuntimeError("catalogs-save linked object is missing")
    bpy.context.scene.collection.objects.link(linked)
    bpy.ops.wm.save_as_mainfile(filepath=str(output), check_existing=False, compress=True)


if __name__ == "__main__":
    main()